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It also is recommended that image data bits for the last vertical column of NLQ
character patterns be all zeros. The last vertical column will be clipped if NLQ
character patterns are expanded for graphics printing. Resident NLQ text character
patterns do not contain image data (dots) in the last column of the character box.
Select n/72 Inch Line Spacing (ESC A)
1B 41 NN
This control stores the line spacing value, in units of 1/72 inch, which is later
selected by Invoke Text Line Spacing (ESC 2). The valid values for NN are X'01' to
X'FF' (1 to 255). The default line spacing is X'0C' (six lines per inch).
A value of 0 is not valid and causes the printer to ignore this command. Following
are example values for NN:
X'00' No Change
X'18' 3 LPI
X'12' 4 LPI
X'0C' 6 LPI
X'09' 8 LPI
X'08' 9 LPI
X'06' 12 LPI
Set Vertical Tabs (ESC B)
1B 42 TT .. TT 00
This control sets the vertical tab stops. The maximum number of tab stops
supported is 64. The Null control code terminates this sequence. If the Null
terminator is missing, the printer treats the next 64 bytes as tab stops and ignores
all the data bytes following these 64 bytes until a Null is received. If the printer
receives this sequence without any tabs specified, all tab stops are cleared.
TT ...TT are the tab values that specify the tab stops as line numbers, relative to
the top of the physical page. Tab stops must be specified in ascending order;
entries not in ascending order are ignored.
Set Page Length (ESC C)
1B 43 LL IN
This control sets the physical page length in lines or inches and resets skip
perforation mode.
LL is a one-byte hexadecimal number that specifies the page length in lines. The
value is converted to inches based upon the current line spacing. Valid values for
LL are X'01' to X'FF', but the resulting page length in inches must be less than
113.8 inches (2890 mm). If LL equals 0, then parameter II (length is inches) is used.
200 4247 Printer Model A00 User’s Guide