Cognitive Solutions A799 Color shade mode ColorPOS, Logo print with color plane swap ColorPOS

Revision D 12/09Chapter 4: Programming Commands  73

Color shade mode (ColorPOS®)

ASCII	GS 0x87 m
Hexadecimal	1D 87 m
Decimal	29 135 m

This applies a mixing of color into any monochrome objects such as text and monochrome logos. Rather than fading away, this mode transitions a character or logo from the current color in which it would normally be printed to the other color. The parameter m specifies the shading effect and has an initial value of 0 which signifies no effect. m specifies the percentage of shading, 0 <= m <= 100.

m specifies the percentage of shading, 0 <= m <= 100. m = 0 is the initial value and turns this mode off.

Note: Only a few gradations will be perceptible, so large increments of m, such as 20, should be used. If a reverse print mode is on, the shade effect will be applied to the background only.

When the current color mode is set to black, increasing values of m relate to the relative amount of paper-color that replaces black dots. Analogously, when the paper-color is the current color, m defines the relative amount of black color dots replacing the paper-color ones.

Both text and monochrome graphics are affected by this command. Turning color shade mode on, turns monochrome shade mode off.

Logo print with color plane swap (ColorPOS®)

ASCII	GS 0x89 n m
Hexadecimal	1D 89 n m
Decimal	29 137 n m

This command will print logo n. The command is ignored if a logo with index n has not been defined. If m = 0 the color(s) as defined in the logo are used; if m = 1 and if the logo is a color one, then the two color planes (black and paper-color) in the logo are swapped.

Form and merge real time surround graphic (ColorPOS®)

ASCII	GS 0x90 m x y o p q
Hexadecimal	1D 90 m x y o p q
Decimal	29 144 m x y o p q

This command will print a real-time graphic style designated by m. m = 0 rectangle, m =1 oval, m =2 ellipse (if printed in a square area the ellipse becomes a circle), m = 3 is a 5 point star, m = 4 is a free hand underline, m = 5 is a free hand ellipse and other values of m reserved for future styles. This graphic is formed into a RAM based graphics buffer, and the buffer state is set to “graphic merge pending”.

Whenever the buffer is in the pending merge state and print output is started, the state will be changed to frozen and a merge process started (logically OR-ed graphic data) into the print lines that follow. The application determines how close the graphic is to any printed character data by subsequent printing of blank lines or blank dot rows. The merge process stops when the buffer is exhausted or its state changed (by a save graphics buffer as logo or new form and merge real time surround graphics command). The form and merge real time surround graphics command can be given multiple consecutive times, allowing the application to set up a multi-polygon background before starting its printout with placed text or logo.

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A799-PG00001D