Moving From The A756 To The A776 (Thermal Printhead Differences) - CognitiveTPG A776 Programming Manual

8 Chapter 3: Migrating to a new printer

Moving from the A756 to the A776 (Thermal printhead differences)

The following table details the list of commands whose behavior differs between the A756 printer and the A758, A760,
and A776 printers. This is due to the physical differences of the 6 dots/mm head in the A756 and the 8 dots/mm head
in the A758, A760 and A776.
Command
15 n
16 n
1B 20 n
1B 24 n1 n2
1B 26 s c1 c2 n1 d1...nn dn
1B 2A m n1 n2 d1...dn
1B 33 n
1B 4A n
1B 59 n1 n2 d1...dn
1B 5C n1 n2
1B 61 n
1D 2A n1 n2 d1...dn
1D 2F m
A776 (B780) Programming Guide
Description
Feed n dot rows
Add n extra dot rows
Set right-side character spacing
Set absolute starting position
Define user-defined character set
Select bit image mode
Set line spacing
Print and feed paper
Select double-density graphics
Set relative print position
Select justification
Define downloaded bit image
Print downloaded bit image
Difference between the A756
and the A776.
This command will move the paper on the receipt in
n/203 inch steps instead of n/152 inch steps.
The dot rows will be measured in n/203 inches versus
n/152 inches.
This command sets the right side spacing to "n" horizontal
motion units. By default, these units are in terms of 1/203
inches versus 1/152 inches.
For graphics commands, the position is scaled to best
match A756. In text mode, the equivalent character
position is calculated.
Since the dots on the A776 printhead are smaller, user
defined characters that were used on the A756 printers
will appear smaller on the A776 printer.
In A756 emulation mode, graphics are scaled to best
match the size of the graphic in the A756 printer.
This command uses n in terms of n/360 inches. Since the
A756 had a fundamental step of 1/152 inch and the A776
has a fundamental step of 1/203 inch, the actual line
spacing will not exactly match the requested spacing.
This command uses n in terms of n/360 inches. Since the
A756 had a fundamental step of 1/152 inch and the A776
has a fundamental step of 1/203 inch, the actual line
spacing will not exactly match the requested spacing.
In A756 emulation mode, the printer scales the graphics
to provide the best match.
The parameter to this command is in units of dots.
However, the command moves and aligns to character
positions. In A756 emulation mode, this command
calculates how many character positions to move
based on the A756 character width in dots (10)
versus the A776 (13).
This command does true dot resolution alignment for
centering versus character-aligned centering.
In A756 emulation mode, this command scales the
incoming data to provide a best match to the size of
the image as it printed on A756.
In A756 emulation mode, this command scales the
incoming data to provide a best match to the size of
the image as it printed on A756.
A776-PG00001 C 12/09