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Epson ActionPrinter T-750 User Manual

Epson printer user's manual
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Summary of Contents for Epson ActionPrinter T-750

  • Page 1 User’s Manual...

  • Page 2: Fcc Compliance Statement

    Seiko Epson Corporation and its affiliates specifically disclaim any and all liability for any damages or claims based upon or due to the use or combination of any Epson printer with any hardware, software or other items not supplied by Seiko Epson Corporation or its affiliates or approved by Seiko Epson Corporation or its affiliates for use with Epson printers.

  • Page 3: Table Of Contents

    Choosing and Loading Paper 2-1 Choosing Paper 2-l Using Single-sheet Paper Reinstalling the Tractor Unit The Paper Thickness Lever Chapter 3 Using the T-750 with Application Programs 3-1 Printer Selection Menus Computer - Printer Communication 3-3 Word Processors 3-4 Spreadsheets 3-6 Graphics Programs...
  • Page 4 A-7 Epson (ESC/P) Commands A-36 IBM Printer Emulation Mode Commands Appendix B Character Tables B-l Epson Mode B-9 Epson International Character Sets B-11 IBM Printer Emulation Mode Appendix C Problem Solving and Maintenance C-l General Troubleshooting C-3 Troubleshooting Graphics Problems...
  • Page 5 Appendix D Defaults and DIP Switches D- 1 Default and Initialization Settings D-2 DIP Switch Settings D-3 International Character Sets Appendix E Technical Specifications E-1 Printing E-l Paper E-2 Mechanical E-2 Electrical E-3 Environment E-3 Parallel Interface E-5 Data Transfer Sequence Glossary Index Contents...
  • Page 6 The SelecType feature gives you access to Near Letter Quality (NLQ) and condensed print. All you have to do is press the button for the style you want. While the T-750 is printing, the SelecType panel shows you what choices it’s using.

  • Page 7: Introduction

    This Manual About To make it easier to set up your new T-750, this manual includes a lo-step guide. This guide, which is printed on the inside of the back flap, summarizes the first chapter’s setting up instructions. Chapters 2 through 5 cover the basic and advanced functions, and the appendixes contain reference information, including all the details you need to use any of the printer’s commands, and some advice on...

  • Page 8: Setting Up Your T-750 Printer

    Chapter 1 Setting Up Your T-750 Printer Setting up your new T-750 is easy. Simply follow the steps in this chapter. 1 Unpacking Your Printer First, remove the printer from the box and take off all outside plastic covering and foam supports. Make sure you have received all the parts shown in the illustration below.

  • Page 9: Selecting The Right Location

    Follow the steps in Figure 1-2. Also, you should install the paper feed knob. To install the knob, simply push it onto the shaft on the right side of the printer as shown in Figure 1-2.

  • Page 10: Installing The Ribbon

    Using a printer stand with the paper stacked underneath it. Using a desk or table as a stand, with the printer near the rear edge and the paper on the floor or on a shelf. Putting the printer on a desk or table and stacking the paper behind the printer.
  • Page 11 Figure 1-4. Press firmly on each end of the cartridge to make sure the pins are firmly seated in the slots, 5.

  • Page 12: Setting Up Your Printer

    Figure 1-4. Installing the ribbon cartridge Figure l-5. Positioning the ribbon Setting Up Your Printer T-750...

  • Page 13: Replacing The Ribbon

    4 Loading Continuous-feed Paper When you receive your T-750, it is set up to print on continuous-feed paper. If you plan to use single-sheet paper, turn to Chapter 2 for instructions on setting up the printer for single sheets. If you have...
  • Page 14 Figure 1-6. Installing the paper rest 4. Pull both the paper release lever and the paper bail lever toward the front of the printer. (Figure 1-6 shows where these levers are.) Setting Up Your T-750 Printer...
  • Page 15 Leave the right holder unlocked. 3. Open the pin-feed covers as shown in Figure l-8. WARNING Do not use the pin-feed covers to move the pin-feed holders, Setting Up Your T-750 Printer...
  • Page 16 5. Pull the paper up until the top is above the pin-feed holders. Fit the holes on the left side of the paper over the pins in the left holder (as shown in Figure l-9) and close the cover. Figure 1-9. Fitting the paper over the Setting Up Your T-750 Printer pin feeds...
  • Page 17 1. Push the paper bail lever back. 2. Hold the paper guide above the printer. Insert the right hinge tab into the right tab slot, as shown in Figure l-10. Then insert the left tab into the left slot and push the guide back so that it is horizontal.
  • Page 18 Chapter 2 or by using the optional automatic sheet feeder. Chapter 2 also contains information on how to remove and reinstall the tractor feed unit. The printer cover that comes packaged with the T-750 is for use with single-sheet paper. Setting Up Your T-750 Printer...

  • Page 19: Turning On The Printer

    5 Turning On the Printer Before plugging in the power cord, see that the power switch near the back of the left side of the printer is turned off; then plug the power cord into a properly grounded socket. WARNING Before turning on the printer, be absolutely sure you have removed all packing materials.

  • Page 20: The Buttons

    The three buttons nearest the front of the printer control advancing the paper and communication with the computer. The four indicator lights show when the printer is turned on and when it is ready to use. The buttons There are three large buttons on the control panel.

  • Page 21: Selectype

    Sans Serif. A software command to change the NLQ typeface is also available in the Epson mode. N L Q R o m a n i s c l e a r a n d t y p e w r i t e r - l i k e .

  • Page 22: If Selectype Does Not Work

    SelecType to control your printing. Most programs that cancel SelecType settings also have sophisticated print control commands that give the same results that SelecType does. The manual for your program should explain the necessary commands. Setting Up Your T-750 Printer 1-15...

  • Page 23: L-16 Running The Self Test

    NLQ. 8 Running the Self Test The T-750 has a built-in self test that prints out the characters in its memory so that you can see that the printer is working properly. The self test also prints the settings of the printer’s DIP switches.

  • Page 24: Connecting The Printer To Your Computer

    FORM FEED button instead of the The T-750 cannot print a draft self test, however, if the NLQ DIP switch is on. Therefore, if the Print Quality line of the self test printout says NLQ, you cannot print a draft test without changing a DIP switch.

  • Page 25: 10 Choosing The Operating Mode With Dip Switches

    10 Choosing the Operating Mode with DIP Switches The T-750 has 12 switches that allow you to change many of the printer’s settings to suit your individual needs. You may need to change one or two of them now. These switches, known as DIP (Dual In-line Package) switches, are in the back of the printer.
  • Page 26 The IBM printer emulation mode is for software that is designed only for IBM printers. It is not necessary to use this mode for your T-750 to be compatible with IBM computers. As you can see from the list of Epson and IBM printer emulation mode commands in Appendix A, the Epson mode has more commands and many more capabilities.
  • Page 27 OFF and switch 1-3 ON). That way you can set up your software for an Epson printer and have the full power of the Epson commands. If you have trouble printing italics, change DIP switch 1-3 to OFF to choose italics instead of character graphics.

  • Page 28: Choosing And Loading Paper

    Carbon copies If you use multi-part forms or carbon copies in the T-750, use no more than three sheets or parts at a time, with a total thickness of no more than 0.17 mm. Also change the paper thickness setting as described at the end of this chapter.

  • Page 29: Preparing The Printer

    Before you load single-sheet paper the first time, you must prepare the printer by removing the tractor unit and installing the paper guide, as described in the next five steps. (If you have previously loaded continuous-feed paper, you have already done some of the steps.) Preparing the printer 1.
  • Page 30 5. Hold the paper guide above the printer. Insert the right hinge tab into the right tab slot, as shown in Figure 2-2. Next, insert the left tab into the left slot. When both tabs are in the slots, push the guide back so that it is horizontal, and then pull it toward you until it stops at an angle (about 45 degrees).

  • Page 31: Loading The Paper

    Now you are ready to load single-sheet paper. Just follow the steps below: 1. Turn the printer ON first. Do not put the paper in the printer before you turn it on. 2. Push both the paper release lever and the paper bail lever toward the back of the printer.
  • Page 32 6. When the paper stops, push the paper bail lever back. 7. Hold the printer cover vertically and fit the notches in its front corners over the pins at the front of the printer case (as shown in Figure 24). Then tilt the cover back into place.

  • Page 33: Reloading During Printing

    Step 2. This time press the paper a little more firmly into place. If nothing happens at all, see that the printer is ON and that the ON LINE light is off.
  • Page 34 Figure 2-5. Reinstalling the tractor unit Choosing and Loading Paper...

  • Page 35: The Paper Thickness Lever

    The Paper Thickness Lever You can adjust the T-750 to accommodate different thicknesses of paper. You need to do this when you print carbon copies. Before moving the paper thickness lever, always turn off the power, open the printer cover or the tractor cover, and move the print head to the middle of the printer.
  • Page 36 If you want to change or check the lever, push it toward the platen (the black roller) until it stops. This is the first position. Then pull the lever toward you. You will feel three more click stops. The table below shows which position you should use.

  • Page 37: Using The T-750 With Application Programs

    Many programs provide an installation or setup procedure that presents a list of printers to choose from. The T-750 uses the same command set as the Epson FX-286e. If the menu does not list this printer, choose one of the following.

  • Page 38: A Quick Test

    A quick test After setting up your application program, print a sample document to be sure the program and the T-750 are communicating properly. If the document doesn’t print correctly, recheck the program’s printer selection and installation procedure. If you’re still having trouble printing, consult the troubleshooting section in Appendix C.

  • Page 39: Word Processors

    Once you have installed your word processor by using the list on page 3-1, you can ordinarily use a fixed set of printer features by using a word processor command to place markers around the text to be altered. When the document is printed, the markers are recognized and translated into suitable commands for your printer.

  • Page 40: Spreadsheets

    Summary (Appendix A) in this manual to find the command, and use the manual for your word processor to find how to assign the command. If your T-750 is not printing correctly, check both the printer and your word processor and do the following: Make sure you’ve selected the correct printer.

  • Page 41: Printer Commands

    Unlike word processors, spreadsheet programs usually don’t let you change printer commands within a spreadsheet. Instead, one style or mode of printing is used for the whole spreadsheet. With the T-750, there are two main ways of sending commands to control the printing of a spreadsheet.

  • Page 42: Graphics Programs

    If you’re using the program’s print facility, recheck the T-750’s Command Summary to make sure you’re sending the correct commands. If you’re still having difficulty printing, check the troubleshooting section in your spreadsheet program’s manual or Appendix C of this manual.
  • Page 43 Individual printer control codes can be sent by using the CHR$ function with the LPRINT statement: 100 LPRINT CHR$(27);CHR$(69); This line sends ASCII codes 27 and 69 to the printer, selecting emphasized printing. Most versions of BASIC permit the ASCII codes in the CHR$ function to be given in either decimal (as above) or hexadecimal.

  • Page 44: T-750 Printer Features

    Chapter 4 T-750 Printer Features You can obtain many different printing effects with the T-750 printer, from arranging the printout on the paper to giving extra emphasis to particular words and phrases. This chapter shows you the features you may want to select with your software. Once you have read about the features, you can find their commands in the Command Summary.

  • Page 45: Print Size And Character Width

    Print Size and Character Width To add greater variety to your documents, the T-750 has two pitches as well as proportional spacing and condensed, double-wide and double-high printing. All can be selected with a software command, and condensed can be selected with SelecType.

  • Page 46: Special Effects And Emphasis

    Special Effects and Emphasis The T-750 offers two ways of emphasizing parts of your text and also allows you to use underlining, superscripts, and subscripts. These features can be controlled only by software commands, but many application programs can produce them if they are properly installed.

  • Page 47: Using Different Character Sets

    In double-strike mode, the T-750 prints each line twice, with the second slightly below the first. This makes the characters bolder. While NLQ is in use, however, double-strike is ignored because NLQ characters are already formed by two passes of the print head.

  • Page 48: Page Layout And Other Commands

    German, UK, Danish, Swedish, Italian, and Spanish. See Appendix D for the DIP switch settings. In Epson mode, these eight, and five more, can also be selected by a software command. The additional character sets are the following: Norwegian, a second Danish set, Japanese, a second Spanish set, and Latin American.

  • Page 49: Graphics And User-Defined Characters

    The quickest and easiest way to print graphics on your T-750 is to use an application graphics program. With such programs you usually create an image on your monitor and then give a command to send the image to the printer.

  • Page 50: The Print Head

    If, on the other hand, you wish to do your own programming or merely wish to understand how the T-750 prints graphics, read on. The Print Head To understand dot graphics you need to know a little about how the T-750’s print head works.

  • Page 51: Dot Patterns

    Dot patterns The T-750’s print head is able to print graphics in addition to text because graphic images are formed on the printer about the same way that pictures in newspapers and magazines are printed. If you look closely at a newspaper photograph, you can see that it is made up of many small dots.

  • Page 52: Graphics Commands

    Therefore, with these labels for the pins, you fire the top pin by sending 128. To fire the bottom pin, you send 1. If you want to fire only the top and bottom pins, you simply add 128 and 1, then send 129.

  • Page 53: Column Reservation Numbers

    Even in single-density graphics mode, one 8-inch line can accommodate 480 columns of graphics; in quadruple-density, almost 2000 columns can fit on the same 8-inch line. Since the printer does not use decimal numbers larger than 255, the graphics commands use two numbers for reserving columns.

  • Page 54: Simple Graphics Programming

    If you supply too little, the printer will stop and wait for more data and will seem to be locked. The next data sent will then be printed as graphics, even if it is really text.

  • Page 55: Width Statements

    WIDTH statements Some software (including most versions of BASIC) automatically inserts carriage return and line feed codes after every 80 or 130 characters. This is usually no problem with text, but it can spoil your graphics. Two extra columns of graphics are printed in the middle of the ones you send, and are left over and printed as text.

  • Page 56: Density Varieties

    The four most common eight-pin modes are available in both Epson and IBM printer emulation modes. Their commands are ESC K, ESC L, ESC Y, ESC Z. In Epson mode, there is also a general-purpose command for any of the eight-pin graphics modes: ESC *. This...
  • Page 57 Table 5-1. modes Graphics *Adjacent dots cannot be printed in this mode. Modes 4-7 in the table are special modes that alter the horizontal density to give proportions of a computer monitor (the CRT modes), or to match the vertical density so as to give round circles (the plotter modes).

  • Page 58: Designing Your Own Graphics

    A little experimentation should tell you whether the reassigning code can improve your graphics printouts. Designing Your Own Graphics This section takes you through the development of a graphics program. The example is not especially complicated, but it does include the same steps you would use for a more complex figure.
  • Page 59 Now look at the high-speed double-density design in Figure 5-3. It should point you in the right direction for your own work. Figure 5-3. Arrow design After plotting the dots on a grid, you calculate the numbers for each pin pattern by dividing the design grid into separate print lines. For the arrow design, the grid was divided into two lines, each seven dots high.
  • Page 60 7/72-inch line spacing because only seven pins are used. Because the data is not repetitive, each column of graphics data is read from the DATA statements and sent to the printer. The design is 41 dot positions wide. Therefore both lines 130 and 140 use the number 41.

  • Page 61: User-Defined Characters

    The grid in the middle of Figure 5-5 shows a plan for a character. Although there are nine pins in the T-750 print head, you can use only eight of them in a single user-defined character. The design in...
  • Page 62 Once the character is planned on the grid, you simply add the pin values for each column together, just as you do for graphics. Then, the next step in defining a character is to send this information to the printer. Figure 5-5. Design grids...
  • Page 63 Line 130 contains al. The information about the character design (which is contained in the data statements at the end of the program) is sent to the printer in the loop between lines 140 and 160.

  • Page 64: Copying Rom To Ram

    As you can see, both sets of characters (the original ROM characters that the printer normally uses and the user-defined character set) remain in the printer available for your use. The command to switch between the two sets is used in lines 180 and 200 and has the following...

  • Page 65: Mixing Print Styles

    Note This command will cancel any user-defined characters you have already created. You must send this command to the printer before you define characters. Specifying width and height The example program uses 136 for al (in line 130 of the definition program), but you can use other values.

  • Page 66: Other Considerations

    BASIC is loaded or when certain application programs start up, and most computers do it if you have to reset them. If the program resets the printer with the ESC @ command, the ROM set is selected, but the user-defined characters are not lost.

  • Page 67: Appendix A Command Summary

    Command Summary This appendix lists and describes all the commands, both Epson (ESC/P) mode and IBM printer emulation mode, available on the T-750. The first part of this appendix lists all commands in numerical order and gives the page number where each is fully described. If you know which command you are looking for, consult the numerical list to find the page number where it is described.
  • Page 68 For example, in BASIC you can turn on double-wide with either of these statements: LPRINT CHR$(27);"W";CHR$(1) LPRINT CHR$(27);"W";"1" The simplest type of command consists of a single character to be sent to the printer. For instance, to print in condensed mode the code format is: ASCII code: SI Decimal: Hexadecimal: 0 This code can be sent from a program by sending the code 15 directly More complex commands consist of two or more character codes.

  • Page 69: Control Key Chart

    Control key chart Some application programs can use control key codes for decimal values O-27. The table below gives you the proper values. The Control Key column indicates that you press the control key at the same time you press the key for the letter or symbol in that column. For example, you press the control key and A at the same time to send the value 1.

  • Page 70: Commands In Numerical Order

    Commands in Numerical Order This section lists all the T-750 commands, with their decimal and hexadecimal values. The numbers in the columns on the right are the paged numbers in this appendix where a complete description of the command can be found. If the Epson and IBM printer emulation mode page numbers are the same, the command is the same in both modes and is described only in the Epson mode section.
  • Page 71 3D Define user-defined characters 3E Set MSB to 1 ESC > ESC ? 63 3F Reassign graphics mode ESC @ 40 Initialize printer ESC A 41 Select n/72-inch line spacing ESC A 41 Set n/72-inch line spacing ESC B 42 Set vertical tabs...
  • Page 72 ESC P ESC P 80 50 Turn proportional on/off ESC Q 81 51 Set right margin ESC Q22 81 51 Deselect printer ESC R 82 52 International character set ESC R 52 Restore default tab settings ESC SO 83 53 Select superscript mode...

  • Page 73: Epson (Esc/P) Commands

    Epson (ESC/P) Commands The following section lists and describes all the Epson (ESC/P) commands. Printer Operation Initialization ESC @ Format: ASCII code: Decimal: Hexadecimal: Comments: Resets the printer mode and clears the buffer of printable data on the print line preceding the command.

  • Page 74: Deselect Printer

    Format: ASCII code: Decimal: Hexadecimal: Comments: Puts the printer into the deselected state until select printer code (DCl) is received. The printer cannot be reselected with the button. Speed ESC s Format: ASCII code: Decimal: Hexadecimal: Comments: The following values can be used for n: 1: Mode is turned ON.

  • Page 75: Turn Unidirectional Mode On/Off

    Decimal: Hexadecimal: Comments: Cancels ESC 8. Therefore, the printer beeper sounds and printing stops when the printer reaches a point approximately 3/4 of an inch from the end of the paper. Command Summary Turn Unidirectional Mode On/Off (The characters “0” and “1”...

  • Page 76: Msb Control

    ESC EM Format: ASCII code: Decimal: Hexadecimal: Comments: The following values can be used for 4: Mode is turned ON. 0: Mode is turned OFF. The variables are the characters “0” (48 decimal or 30 hex) and “4” (52 decimal or 34 hex). Do not use 1 decimal, 01 hex, 4 decimal, or 04 hex.
  • Page 77 Cancels the MSB control set by ESC = or ESC >. Beeper Format: ASCII code: Decimal: H e x a d e c i m a l : 0 7 Comments: Sounds the printer’s beeper. Command Summary > Set MSB to 1 Cancel MSB Control Beeper A-11...

  • Page 78: Data Control

    Data Control Format: A S C I I c o d e : C R Decimal: Hexadecimal: Comments: Prints the data in the buffer and returns the print position to the left margin. A line feed may be added if DIP switch 24 is ON or the AUTO PEED XT line on the parallel interface is held LOW.

  • Page 79: Vertical Motion

    Vertical Motion Form feeding Format: ASCII code: Decimal: Hexadecimal: Comments: Prints the data in the print buffer and advances the paper to the top of the next form according to the current page length. ESC C Format: ASCII code: Decimal: Hexadecimal: Comments: Sets the page length to n lines in the current line spacing.

  • Page 80: Line Feeding

    For example, with the standard settings for line spacing (l/6-inch), and page length (66 lines), ESC N 6 causes the T-750 to print 60 lines and then skip 6. DIP switch 2-3 performs the same function. This setting is cancelled by ESC 0 and also by ESC C or ESC C NUL.

  • Page 81: Select L/6-Inch Line Spacing

    ESC 0 Format: ASCII code: Decimal: Hexadecimal: Comments: Sets the line spacing to l/8 of an inch for subsequent line feed commands. The 0 is the character zero and not ASCII code 0. ESC 1 Format: ASCII code: Decimal: Hexadecimal: Comments: Sets the line spacing to 7/72 of an inch for subsequent line feed commands.

  • Page 82: Select N/216-Inch Line Spacing

    ESC 3 Format: ASCII code: Decimal: Hexadecimal: Comments: Sets the line spacing to n/216 of an inch for subsequent line feed commands. The “3” is the character three and not ASCII code 3. The value of n must be from 0-255. ESC A Format: ASCII code:...
  • Page 83 Vertical tabbing Format: ASCII code: Decimal: Hexadecimal: Comments: Advances the paper to the next tab setting in the channel selected by ESC /. If no channel has been selected, channel 0 is used. If no vertical tabs have been selected, the paper advances one line. ESC B Format: ASCII code:...

  • Page 84: Set Left Margin

    ESC / Format: ASCII code: Decimal: H e x a d e c i m a l : 1 B Comments: This command is used to select the vertical tab channel, with the value of c from O-7. All subsequent VT commands use the channel selected by this command.
  • Page 85 Backspacing can be performed up to, but not beyond, the left margin setting. The BS code is also ignored if ESC a, 2, or 3 has been sent. In Epson mode, if this code is received immediately after graphics printing, the print position of subsequent data is moved back to the point at which graphics printing started.

  • Page 86: Set Relative Position

    ESC \ Format: ASCII code: Decimal: Hexadecimal: Comments: Determines the position (relative to the current position) at which printing of following data will start. To find the displacement required in l/120ths of an inch. If the displacement is to the left, subtract it from 65536. Send the resulting number using this formula: total number of dots = nl + (n2 command is ignored if it would move the print position outside the current margins.

  • Page 87: Set Horizontal Tabs

    ESC D Format: ASCII code: Decimal: Hexadecimal: Comments: This command allows setting of up to 32 horizontal tabs, which are entered as n3, etc. (from 1-137) with the NUL character or n1, n2, any value less than the previous one terminating the command. ESC D NUL clears all tabs.

  • Page 88: Master Select

    ESC ! Format: ASCII code: Decimal: Hexadecimal: Comments: Selects any valid combination of the modes in the table below. The variable is determined by adding together the values of the desired modes from the table. Table A-l. Master Select Mode D e c Pica Elite...

  • Page 89: Ascii Code: Esc Decimal: Hexadecimal: Comments

    ESC M Format: ASCII code: Decimal: Hexadecimal: Comments: Selects elite pitch (12 characters per inch). ESC p Format: ASCII code: Decimal: Hexadecimal: Comments: The following values can be used for 1: Mode is turned ON. 0: Mode is turned OFF. The width of proportional characters varies from character to character.
  • Page 90 ESC SI Format: ASCII code: Decimal: Hexadecimal: Comments: Duplicates the SI command. Format: ASCII code: Decimal: Hexadecimal: Comments: Cancels condensed printing set by SI, ESC SI, SelecType, or DIP switch l-l. Format: ASCII code: Decimal: Hexadecimal: Comments: Double-wide mode doubles the width of all characters. This mode is cancelled by a carriage return or DC4.

  • Page 91: Hexadecimal: 1B

    Format: ASCII code: Decimal: Hexadecimal: Comments: Cancels one-line double-wide printing selected by SO or ESC SO, but not double-wide printing selected by ESC W or ESC !. ESC W Format: ASCII code: Decimal: Hexadecimal: Comments: The following values can be used for n: 1: The mode is turned ON.

  • Page 92: Print Enhancement

    Print Enhancement ESC E Format: ASCII code: Decimal: Hexadecimal: Comments: Makes text bolder by printing each dot twice, with the second dot slightly to the right of the first. ESC F Format: ASCII code: Decimal: Hexadecimal: Comments: Cancels emphasized, the mode selected by ESC E. ESC G Format: ASCII code:...

  • Page 93: Cancel Double-Strike Mode

    ESC H Format: ASCII code: Decimal: Hexadecimal: Comments: Turns off the double-strike mode selected by ESC G. ESC SO Format: ASCII code: Decimal: Hexadecimal: Comments: Prints characters about two-thirds of the normal height in the upper part of the character space. The ASCII code 0 or the character “0” can be used in this command.

  • Page 94: Ascii Code

    ESC - Format: ASCII code: Decimal: Hexadecimal: Comments: The following values can be used for n: 1: Mode is turned ON. 0: Mode is turned OFF. This mode provides continuous underlining, including spaces. Word Processing ESC a Format: ASCII code: Decimal: Hexadecimal: Comments:...

  • Page 95: Character Sets

    0: Selects italics. 1: Selects Epson Character Graphics. Selects the character table used by codes 128-255. Selecting Epson Character Graphics does not disable italic printing. Italic printing can still be selected by ESC 4. Duplicates the function of DIP switch 1-3.

  • Page 96: Cancel Italic Mode

    Hexadecimal: Comments: Causes characters from the italic character set to be printed. This command is valid even if the Epson Character Graphics set has been selected by ESC t or the DIP switch 1-3, but character graphics cannot be italicized.

  • Page 97: Hexadecimal: 1B Comments

    User-defined Characters Note: See Chapter 5 for sample programs and full information on this topic. E S C & Format: ASCII code: Decimal: Hexadecimal: Comments: This command allows characters to be redefined in the currently selected mode. ESC: Format: ASCII code: Decimal: Hexadecimal: Comments:...

  • Page 98: Decimal

    ESC 6 Format: ASCII code: Decimal: Hexadecimal: Comments: Enables the printing of codes 128 through 159 (decimal) as characters, not control codes. This allows the use of these characters for user-defined characters. ESC 7 Format: ASCII code: Decimal: Hexadecimal: Comments: This code causes codes 128 through 159 to be treated as control codes.

  • Page 99: Format

    Graphics Note: See Chapter 5 for sample graphics programs. ESC K Format: ASCII code: Decimal: Hexadecimal: Comments: Turns on eight-pin single-density graphics mode (60 dots per inch). The total number of columns = nl + ESC L Format: ASCII code: Decimal: Hexadecimal: Comments:...

  • Page 100: Command Summary

    ESC Z Format: ASCII code: Decimal: Hexadecimal: Comments: Turns on eight-pin quadruple-density graphics mode (240 dots per inch). The total number of columns = nl + ESC * Format: ASCII code: Decimal: Hexadecimal: Comments: Turns on graphics mode available modes. The total number of columns = Table A-2.
  • Page 101 ESC ? Format: ASCII code: Decimal: H e x a d e c i m a l : 1 B Comments: Changes one graphics mode to another. The variable s is a character (K, L, Y or Z), w hich is reassigned to a mode n (0-7). ESC ^ Format: ASCII code:...

  • Page 102: Ibm Printer Emulation Mode Commands

    ESC G, ESC H, ESC SO, ESC S1, ESC T, ESC - Graphics ESC K, ESC L, ESC Y, ESC Z Note that IBM printer emulation mode graphics are the same as Epson mode graphics except that ESC *, ESC ?, and ESC A-36 are not available.
  • Page 103 ESC Q22 Format: ASCII code: Decimal: Hexadecimal: Comments: Places the printer in an off line state until the printer is turned off and back on or until it receives a DC1 code. Vertical Motion ESC A Format: ASCII code: Decimal:...
  • Page 104 ESC 2 Format: ASCII code: Decimal: Hexadecimal: Comments: Executes the line spacing stored in memory by ESC A. If no ESC A command has been sent, ESC 2 sets the line spacing to l/6 of an inch. (The 2 is the character two and not ASCII code 2.) ESC J Format: ASCII code:...

  • Page 105: Horizontal Motion

    1: Mode is turned ON. 0: Mode is turned OFF. If the mode is on, the printer adds a line feed to each carriage return. If the mode is off, it does not. This command duplicates the function of DIP switch 2-4.

  • Page 106: Overall Printing Style

    ESC D Format: ASCII code: Decimal: Hexadecimal: Comments: This command allows setting of up to 32 horizontal tabs, which are entered as n3, etc. (in the range 1 to 137) with the NUL n1, n2, character terminating the command. The tab settings must be entered in ascending order.

  • Page 107: Esc

    Print Size/Width/Enhancements Four modes in the IBM printer emulation mode are incompatible with each other. These modes are pica, elite, condensed, and proportional. Therefore, if you select any one of these, you cancel all the others. ESC: Format: ASCII code:...

  • Page 108: Decimal

    Format: ASCII code: Decimal: Hexadecimal: Comments: Cancels condensed, elite, and proportional printing and selects pica printing. The command does not cancel double-wide. ESC [@ Format: ASCII code: E S C [ Decimal: Hexadecimal: Comments: The following values must be used: m2 = 0.

  • Page 109: Hexadecimal: 1B

    ESC - Format: ASCII code: Decimal: Hexadecimal: Comments: The following values can be used for n: 1: Mode is turned OFF. 0: Mode is turned ON. Character Sets ESC 6 Format: ASCII code: Decimal: Hexadecimal: Comments: Selects the international character set (Table 2). See the character set tables in Appendix B.

  • Page 110: Print Characters From Symbol Set

    ESC \ Format: ASCII code: Decimal: Hexadecimal: Comments: Prints a number of characters from the symbol set. The number of characters = nl + (n2 x 256). See B for the symbol set and the codes to use for data. ESC”...
  • Page 111 11 data numbers for each character The data numbers for each character are determined as shown on the grid for the Epson mode in Figure 5-5. To print a user-defined character, you must use ESC I, which is described on page A-40.

  • Page 112: Character Tables

    Epson Mode The first half of the Epson mode table covers the standard ASCII character codes from 0 to 127. The remainder of the table shows two characters for each code: one from the standard italic character table and one from the Epson character graphics table.
  • Page 113 Table B-1. Epson mode charmers Decimal Hex Character ASCII name null start of heading start of text end of text end of transmission enquiry acknowledge bell backspace tab horizontally line feed tab vertically form feed carriage return shift out shift in...
  • Page 114 Table B-I, continued Character Width " & < > Character Tables Character Width...
  • Page 115 continued Table B-1, Character Width Character Tables...
  • Page 116 Table B-1, continued Decimal Hex Character Character Tables Graphics Widths: character normal italic...
  • Page 117 Table B-1, continued Decimal Hex Italic character Width Graphics Widths: character normal italic Character Tables...
  • Page 118 B-l, continued Table Decimal Hex Italic character Character Tables Graphics Widths: Width character normal italic...
  • Page 119 Table B-1, continued Decimal Hex Italic character Width Graphics Widths: character normal italic Character Tables...

  • Page 120: Epson International Character Sets

    Epson International Character Sets Twelve character codes between 35 and 126 can represent more than one character each, depending upon the international character set you select. You can make the choice either by setting DIP switches l-6 through 1-8 or by using the ESC R command.
  • Page 121 Table B-3. Proportional widths of international characters Characters Widths: Normal B-10 Characters Widths: Italic Normal Italic Character Tables...

  • Page 122: Ibm Printer Emulation Mode

    IBM Printer Emulation Mode This section shows the characters available in IBM printer emulation mode. There are two main character tables: standard (CC Table 1) and international (CC Table 2). The standard table is selected when DIP switches 1-6 to 1-8 are all UP; the international table is selected by any other setting of these three switches.
  • Page 123 B-4. Table IBM printer emulation mode characters Decimal Hex Standard (CG Table 1) (CG Table 2) set B - 1 2 International Symbol § Character Tables Width...
  • Page 124 Table B-4, continued Character Width & < > Character Tables Character Width B - 1 3...
  • Page 125 Table B-4, continued Character Width D e c 1 B-14 Character Tables...
  • Page 126 Table B-4, continued Decimal Standard (CG Table 1) Character Tables International (CG Table 2) Width B-15...
  • Page 127 B-4, Table continued Decimal Hex Standard (CG Table 1) 1 B-16 International Width (CG Table 2) Character Tables...
  • Page 128 Table B-4, continued Decimal Hex Character Tables International Standard (CG Table 2) (CG Table 1) Width B-17 1...
  • Page 129 Table B-4, concluded Decimal Hex Standard (CG Table 1) B - 1 8 International Width (CG Table 2) Character Tables...

  • Page 130: Problem Solving And Maintenance

    Appendix C Problem Solving and Maintenance This appendix presents solutions for possible problems, explanations of the T-750’s advanced features, tips on maintaining and transporting your printer, and instructions on replacing the print head. General Troubleshooting Problem Printer does not print...
  • Page 131 Then turn the printer back on and try again. If the printer beeps and does not print again, call the Epson toll- free number for the location of the nearest Authorized Epson Customer Care Center.

  • Page 132: Troubleshooting Graphics Problems

    Data Dump Mode The T-750 has a special feature that makes it easy for experienced printer users to find the causes of problems. The hexadecimal (hex) or data dump mode gives a printout of exactly what codes reach the printer.

  • Page 133: Ibm Pc Basic Solutions

    Data dump mode can be turned off by turning off the printer; it is also cancelled by an INIT signal from the computer. IBM PC BASIC Solutions IBM PC BASIC inserts a carriage return and line feed (CR-LF) after each 80 characters you send it.

  • Page 134: Maintaining Your Printer

    Do not spray the inside of the printer with oil: unsuitable oils can damage the mechanism. If lubrication is needed, call the Epson toll-free number for the location of the nearest Authorized Epson Customer Care Center.

  • Page 135: Replacing The Print Head

    As soon as the print head fails, stop using the printer and call the Epson toll-free number for the location of the nearest Authorized Epson Customer Care Center for a replacement head. The print head catalog number is #8731. To replace the head, follow these steps: 1.

  • Page 136: Transporting The Printer

    Now your new print head is ready to use. Transporting the Printer There are several precautions you should take when packing the printer for transportation: Remove the ribbon.
  • Page 137 Remove the paper rest and paper guide and pack them separately. Fix the tractor cover in place with tape. Pack the printer in the original foam packing supports and box. C - 8 Problem Solving and Maintenance...

  • Page 138: Appendix D Defaults And Dip Switches

    DIP switches. Default and Initialization Settings The T-750 can be initialized (returned to a fixed set of conditions) in three different ways: when it is turned on, when it receives an INIT signal at the parallel interface (pin 31 becomes LOW), and when it receives the ESC @ command.

  • Page 139: Dip Switch Settings

    DIP Switch Settings The T-750 has twelve DIP (Dual In-line Package) switches that allow you to change many of the printer’s settings to suit your individual needs. The DIP switches are in two groups, mounted on the back panel, as shown in Figure D-1.

  • Page 140: International Character Sets

    Note: The factory setting for all switches except l-6, l-7, and l-8 is OFF International Character Sets Thirteen international character sets are available in Epson mode. Eight of these are selected by DIP switches l-6 to l-8 and the remaining...
  • Page 141 The DIP switch settings to select the different character sets are shown in Table D-3. Table D-3. International settings E son mode DIP switch settings character set...

  • Page 142: Appendix E Technical Specifications

    Appendix E Technical Specifications This appendix contains the specifications for the T-750 including the built-in parallel interface. Printing Printing method Impact dot matrix Printing speed 240 characters per second in draft elite 200 characters per second in draft pica 40 characters per second in Near Letter Quality pica...

  • Page 143: Mechanical

    Mechanical Ribbon Cartridge, exclusive to T-750 or Epson FX series printers, black #8755 Life expectancy (in characters, at 14 dots/character): 3 million MCBF 5 million lines (excluding the print head) Print head Life 100 million characters, at 14 dots/character Dimensions and Weight...

  • Page 144: Environment

    Each signal is at HIGH level when data is logical 1 and LOW when it is logical 0. Text Approximately, 12-microsecond pulse. LOW indicates that data has been received and that the printer is ready to accept more data. E-3 1...
  • Page 145 Table E-l. Pins and signals continued Notes: 1. The column heading “Direction” refers to the direction of signal flow as viewed from the printer. 1 E-4 Technical Specifications...

  • Page 146: Data Transfer Sequence

    To prevent noise, these cables should be shielded and connected to the chassis of the host computer or the printer but not at both ends. 3. All interface conditions are based on TTL level. Both the rise and the fall times of each signal must be less than 0.2 microseconds.
  • Page 147 HIGH HIGH/LOW DC1 /DC3 OFF-LINE (no effect) (no effect) ‘Even though printing is disabled, data characters are received and acknowledged, since the printer is looking for another DC1 character, which would allow it to resume printing. DC1/DC3 ERROR BUSY HIGH...

  • Page 148: Glossary

    See number systems. A binary digit (0 or I), which is the smallest unit of information used by a printer or computer. See also byte A unit of information consisting of eight bits. buffer See memory.

  • Page 149: Continuous Paper

    DIP switches Small switches in a printer that control various printer functions and set the default status of the printer when it is turned on or initialized. DIP stands for Dual In-line Package. dot graphics A graphic design formed by patterns of dots.
  • Page 150 Abbreviation for Epson Standard Code for Printers. The system of commands lets you perform software control of your printer from your computer. It is standard for all Epson printers and supported by most applications software for personal computers. 15 pitch...

  • Page 151: Form Feed

    A control code and a panel button that advances the paper one line space. memory The printer, like a computer, has a memory. When you print a file from a computer, the contents of the file are transferred quickly from the computer’s memory to the printer’s memory The printer then prints information from its own memory at a much slower rate.

  • Page 152: Print Quality

    See interface. parity Parity is a method for a computer and printer to check the reliability of data transmission. pitch Indicates the number of characters per inch (cpi). The standard is 10 pitch.

  • Page 153: Pull Tractor

    All data stored in RAM is lost when the printer is turned off. reset To return a printer to its defaults, by either a command, an INIT signal, or by turning the printer off and on. self test A method of checking the operation of the printer.
  • Page 154 Centronics, 1-17 Character graphics set, l-20, 4-4, 5-13 Character sets, 5-13 - 18 tables, B-l - 18 Choosing a place for printer, l - 2 - 3 Cleaning, C-5 Commands, A- 1 - 45 Commands in numerical order, A-4 - 6...
  • Page 155 Graphics programs, 3-6 Hexadecimal, 3-2 - 3 Hexadecimal (hex) dump. See Data dump IBM printer emulation mode, 1-19 - 20 Paper character tables, B-l 1 - 18 IBM PC BASIC, C-4 - 5 Indicator lights, l-13 - 14 Initialization, D-l...
  • Page 156 Technical specifications, E-1 - 6 Top of form, 1-11 Tractor installing, 2-6 - 7 removing, 2-2 See also Paper, continuous feed Transporting the printer, C-7 Troubleshooting, C-l - 3 Underlining, 4-3 - 4 User-defined characters, 5-13 - 18 Index Word processors, 3-3 - 4...

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