Formatted Print Rotation Commands - Ithaca PcOS Series 80PLUS Programmer's Manual

Programmer's Guide PcOS Series 80PLUS Control Codes
Formatted Print Rotation

Formatted Print Rotation Commands

To provide flexibility in printing various sized forms, rotated print capability is provided. This mode
will rotate the print in any of three 90° orientations.
In 90° and 270° rotated mode, the print data is first buffered by the printer, processed (rotated) and
then printed. This causes the print process to be delayed slightly as it takes some time to process the
data before it is printed. In 180° mode, the print is simply inverted and mirrored.
Because the 90° and 270° rotated print buffer is limited, the amount of rotated print is also limited.
The printer can support a limit of 23 lines of rotated print with a maximum line length of 128
characters.
The spacing between lines is controlled by a line spacing table. This table is defined by the rotated
print line spacing ([ESC] u ...) command or by inserting [LF] or [ESC]J<n> commands in the rotated
data. The [ESC]u command specifies the space to be added between each printed line. Each line has
an entry in the table. There is room for 23 lines in the table. The minimum spacing (and default) is
1/80 inch between lines.
If a [LF] is used to specify the line spacing, it overrides the default table and sets spacing to 1/80 inch.
If [ESC] J <n> is used, <n> specifies the spacing in n/216 inch (including white space).
The intercharacter spacing is adjusted with the normal line spacing commands. The [ESC]3<n>
command is the most effective command for adjusting intercharacter spacing.
Specifying the line length is useful to determine where data is printed if line formatting is specified.
When rotated 90° and 270°, the print field can be extended to print the complete line length specified.
This mode is called line formatted mode. In line formatted mode, the line length is set not by the
longest line entered but by the set line-length command. The default line length is 80 characters,
However, any value from 1 to 128 may be selected. Anything past the selected length will be wrapped
to the next line.
In rotated 180° mode, all spacing commands are effective. This mode of operation simply inverts and
mirrors the print operation. All line spacing and print features are available. It should be noted that
the feed direction is not effected by any of the rotate commands.
Rev B 4/13/99 Page 33