15
3.11.2 Mode C Document Movement Commands
BS
or ESC ] moves the document down one line, with line spacing keypad selected (see
3.6.1) or set by an HT command.
LF
moves the document up one line, with line spacing keypad selected (see 3.6.1) or set by
an HT command.
VT n
moves the document a variable number of lines or steps with n being a single byte, bit
coded as 01ULCCCC where:
U = 1 = Up feed
U = 0 = Down feed
L = 1 = Line feed (1/6” or 1/5”)
L = 0 = Step feed (1/60”)
CCCC = Line count or step count
ESC n
moves the document up (CCCC)/120 inches where n is a single byte bit coded as
0011CCCC.
ESC J n
moves the document up n/216 inches where n is a single binary coded byte.
FF
ejects the document.
If any document movement command (BS, LF, VT, ESC n, ESC ], ESC J n or FF) has been preceded by any
printable ASCII characters, they will be printed before the movement command is executed.
3.11.3 Mode C Print Commands
CR
prints all preceding printable ASCII characters. There is no document movement due to the
CR.
SO
starts double width printing. All characters received after an SO and before an SI, CR or
feed command will be printed double width.
SI
stops double width character printing.
ESC SO
starts double height printing. All characters received after an ESC SO and before an ESC SI,
CR or feed command will be printed double height. Single height characters will be printed in
line with the top of double height characters if they are mixed in a print line.
ESC SI
stops double height printing.
ESC E
starts bold, double strike printing in 10 and 12 character/inch NORMAL print speed and
reduces print speed by 33% (DP6) or 50% (DP7).
ESC F
stops bold printing.
RS n
inserts n blank spaces into the print line and can be used to reduce the number of
characters transmitted when large blank spaces are to be printed. n is of the form
01NNNNNN where NNNNNN is the number of blanks to be inserted. RS A is 1 blank, RS z
is 58.
US
enables or disables underscoring of printable characters. All characters received after a US
and before another US, CR or feed command will be printed with the character underscored.
STX
prints envelopes. It must be immediately followed by two bytes, X and Y, each bit coded as
01NNNNNN. NNNNNN/10 inches is the distance from the top edge of the envelope to the first
line of text for X and from the left edge of the envelope to the first column of text for Y.
Following X and Y are normal lines of text separated by LF's and finally terminated by a FF
which causes printing and ejection.
DC4
clears all previously received data out of the buffer.
