Margins (Esc 9, Esc 0); Carriage Movement; Paper Movement; 2.3.5.4 Ribbon Control - Xerox Diablo 1620 Manual

2.3.5.1 MARGINS (ESC 9, ESC 0)
When power is first applied, or when a CLEAR
operation is performed, both the right and left margins are
set to their maximum outward positions. To change either
margin, first position the carriage to the desired new margin
location. Then depress the ESC key, followed by the
9
key
to change the left margin or the 0 (zero) key to change the
right margin. If a second change is desired, the first setting
need not be cancelled: setting a new margin automatically
cancels the old one.
Once the left margin has been changed, subsequent
carriage returns will return the carriage to the new position.
Backspacing is permitted past the new left margin, but
never beyond the "extreme" left margin position (print
position 1).
Once the right margin has been changed, printing can
continue past the new margin, but as the carriage passes the
new setting, the audible alarm sounds. The keyboard is not
disabled. Printing can continue past the right margin all the
way to the "extreme" right margin position (same position
as right margin after CLEAR operation), at which point any
further characters will be overprinted on the characters
previously printed there.
2.3.5.2 CARRIAGE MOVEMENT
Normal carriage movement is accomplished as a result of
printing each character. The SPACE and BACKSPACE keys
cause the same operation as on a regular typewriter. They
are usually repeat keys, which will cause repeated spacing
or backspacing if they are held depressed. The RETURN
key always causes the carriage to return to the left margin,
but it does not move the paper unless the AUTO LF switch
is on.
The TAB key causes the carriage to move to the right to
the next previously-set tab stop. If there are no tab stops
set to the right of the present carriage position, operating
the TAB key causes the carriage to move to the extreme
right print position (print position 132 for 10 characters
per inch and print position 158 for 12 characters per inch).
To set tab stops, first space the carriage to the desired
tab stop position. Then depress the ESC key followed by
the digit 1. For normal 10-pitch or 12-pitch spacing, there
are no restrictions as to the number of tab stops or to the
distance between stops.
To clear individual tab stops, first tab to the stop to be
cleared, and then depress the ESC key followed by the digit
8. To clear all tab stops at once, depress the ESC key
followed by the digit 2.
See Section 3 for information on Absolute tabbing.
2-14
2.3.5.3 PAPER MOVEMENT
There are several functions that affect paper movement.
These include line feed, negative line feed, form feed, and
vertical tab. Vertical tab is covered in Section 3.
To accomplish a normal I ine feed, depress the LI NE
FEED key. A normal line feed also occurs as a result of a
carriage return when the AUTO LF switch is on.
To perform a negative line feed (to move the paper
down one line), depress the ESC key before operating the
LINE FEED key.
To perform a half-line feed (to move the paper up 1/2
line), depress the ESC key followed by the upper case
"u"
key. This is used for typing subscripts or to return to the
original line after performing a negative half-line feed.
To perform a negative half-line feed (to move the paper
down 1/2 line), depress the ESC key followed by the upper
case liD" key. This is used for typing superscripts and
exponents or to return to the original line after performing
a half-I ine feed.
For both half-line feed operations, make sure to use the
respective upper case (capital) letters; the lower case
characters will have no effect.
A form feed can be accomplished in either of two ways.
As previously explained, the form will be moved up to the
top line of the next form when the FORM FEED switch on
the front panel is operated. This same action can also be
initiated from most keyboards by producing the FF code.
This is normally done by holding down the CTRL key
while operating another key, usually the "L." Note,
however, that when this method is used in Remote mode,
the FF code is transmitted to the communications network.
If a form feed is desired without transmitting the F F code,
the front panel FORM FEED switch must be used.
2.3.5.4 RIBBON CONTROL
The HyTerm is initialized for printing in black. To
change to red, execute the 2-character sequence ESC A. To
change back to black, execute ESC B. Make sure to use the
upper case A and B characters - the lower case "a" and
"b" will have no effect. A CLEAR operation will also
restore black printing.
The choice of red or black can also be controlled
remotely by the host computer. If the host computer is to
attempt red printing, be certain to have a two-color ribbon
installed: if red printing is attempted on a single-color
ribbon, the ribbon will not be lifted into position for
printing, and printing will occur only as long as sufficient
ink remains on the printwheel type face.