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User's Guide
Code Sets D-43
Table D-6. Epson and IBM Escape Sequences––continued
Function ASCII Hexadecimal Decimal Description
Text Functions––continued
Automatic formatting .............. ESC a n 1B 61 n 27 97 n This sequence starts and ends automatic formatting modes,
Start centering...................... ESC a 1 1B 61 31 27 97 49 wherein the printer stores all subsequent data in a special
Start flush right..................... ESC a 2 1B 61 32 27 97 50 buffer. When the printer receives any code or sequence
Start justify .......................... ESC a 3 1B 61 33 27 97 51 that causes paper movement, it prints the stored data as
End all formatting................ ESC a 0 1B 61 30 27 97 48 follows:
In center mode, data prints centered on the point that is
midway between the left and right margins. If a line is too
long to fit between the margins, the printer performs line
wrapping and centers each line.
In flush right mode, data prints so that the line ends at the right
margin. If a line is too long to fit, the printer performs line
wrapping and prints each line flush right.
In justify mode, data prints justified between the left
and right margins. If a line is too long to be justified,
the printer performs line wrapping and then justifies
each line. The printer does not justify any line with a
carriage return.
Proportional printing ............... ESC p n 1B 70 n 27 112 n These sequences start and end the proportional mode,
Start ...................................... ESC p 1 1B 70 31 27 112 49 wherein the printer spaces characters by moving a specific
Start (alternate).................... ESC P 1 1B 50 31 27 80 49 number of PS units, printing the character, and then moving
End ....................................... ESC p 0 1B 70 30 27 112 48 by the same number of PS units again.
End (alternate) ..................... ESC P 0 1B 50 30 27 80 48
If the active font is a PS font, the printer uses the PS unit values
prestored in the font. If the active font is a fixed-pitch font, the
printer uses one-half the normal character spacing as the number
of PS units for every character. All PS fonts contain prestored
PS unit values for characters. A PS unit value represents one-
half the space, in multiples of 1/120-inch, that is required to print
and space a character. PS unit values range from 2 to 8. For
example, the letter "V" has a PS unit value of 6, so it prints
centered with a space of 12/120-inch (move 6 PS units, print the
"V", and then move 6 PS units). Or, the letter "i" has a PS unit
value of 3, so it prints centered within a space of 6/120-inch
(move 3 PS units, print the "i", and then move 3 PS units).
To determine the total distance from the center line of one
character to the center line of the next character, just add the two
characters' PS unit values. In the example above, the distance
between the center of the "V" and the center of the "i" is 9/120-
inch. All numeric characters (0 to 9) have the same PS unit
value.
After ending proportional mode, character spacing resets to the
default character spacing of the active font. If the active font is a
PS font, character spacing resets to 12 characters per inch.
)Note: The ESC P n sequence is not supported when an Epson
emulation is active.
User's Guide
Code Sets D-43
Table D-6. Epson and IBM Escape Sequences––continued
Function ASCII Hexadecimal Decimal Description
Text Functions––continued
Automatic formatting .............. ESC a n 1B 61 n 27 97 n This sequence starts and ends automatic formatting modes,
Start centering...................... ESC a 1 1B 61 31 27 97 49 wherein the printer stores all subsequent data in a special
Start flush right..................... ESC a 2 1B 61 32 27 97 50 buffer. When the printer receives any code or sequence
Start justify .......................... ESC a 3 1B 61 33 27 97 51 that causes paper movement, it prints the stored data as
End all formatting................ ESC a 0 1B 61 30 27 97 48 follows:
In center mode, data prints centered on the point that is
midway between the left and right margins. If a line is too
long to fit between the margins, the printer performs line
wrapping and centers each line.
In flush right mode, data prints so that the line ends at the right
margin. If a line is too long to fit, the printer performs line
wrapping and prints each line flush right.
In justify mode, data prints justified between the left
and right margins. If a line is too long to be justified,
the printer performs line wrapping and then justifies
each line. The printer does not justify any line with a
carriage return.
Proportional printing ............... ESC p n 1B 70 n 27 112 n These sequences start and end the proportional mode,
Start ...................................... ESC p 1 1B 70 31 27 112 49 wherein the printer spaces characters by moving a specific
Start (alternate).................... ESC P 1 1B 50 31 27 80 49 number of PS units, printing the character, and then moving
End ....................................... ESC p 0 1B 70 30 27 112 48 by the same number of PS units again.
End (alternate) ..................... ESC P 0 1B 50 30 27 80 48
If the active font is a PS font, the printer uses the PS unit values
prestored in the font. If the active font is a fixed-pitch font, the
printer uses one-half the normal character spacing as the number
of PS units for every character. All PS fonts contain prestored
PS unit values for characters. A PS unit value represents one-
half the space, in multiples of 1/120-inch, that is required to print
and space a character. PS unit values range from 2 to 8. For
example, the letter "V" has a PS unit value of 6, so it prints
centered with a space of 12/120-inch (move 6 PS units, print the
"V", and then move 6 PS units). Or, the letter "i" has a PS unit
value of 3, so it prints centered within a space of 6/120-inch
(move 3 PS units, print the "i", and then move 3 PS units).
To determine the total distance from the center line of one
character to the center line of the next character, just add the two
characters' PS unit values. In the example above, the distance
between the center of the "V" and the center of the "i" is 9/120-
inch. All numeric characters (0 to 9) have the same PS unit
value.
After ending proportional mode, character spacing resets to the
default character spacing of the active font. If the active font is a
PS font, character spacing resets to 12 characters per inch.
)Note: The ESC P n sequence is not supported when an Epson
emulation is active.