User`s manual

64 P630i, P640i Card Printer User’s Manual 980541-003 Rev. A
Settings and Adjustments
Color Calibration
Any of the above five elements may be selected for black extraction when the ribbon is set up
to apply YMC (color) and K (black) to the same surface of the card. In this condition, the
driver generates an extracted K image by looking for “true-black” features in the selected
element types, that is, instances where all three YMC values are at the maximum (full
intensity). Each such true-black instance generates a corresponding cluster of black pixels in
the extracted image, which will be printed with the K (black) panel either on top of the YMC
image, or replacing it entirely – your choice.
Color Calibration
Color rendering in the printer can be
described in terms of a curve, which
determines how much power is put
into the printhead for a given shade.
The Y, M and C color curves can be
separately modified by the Gain and
Offset parameters. Click Restore
Defaults if you are not satisfied with
adjustments made.
To access the Color Calibration
screen, select Start > Printers (or
Printers and Faxes). Right click on
the Zebra P630i or Zebra P640i
printer listing. Select Properties >
Device Settings > Color Calibration.
Offset Shifts the color curve up
(darker) and down (lighter).
Gain Adjusts steepness of the
curve. Lighter shades will remain
unchanged, but darker shades will
get darker or lighter as the number is
increased or decreased.
Preheat Adjusts how much the head is preheated before each print line (every three
hundredths of an inch). A larger value darkens (sharpens) the leading edges of colored areas. A
lower value may result in “feathering” - starting light, then darkening over the following few
pixels as the head heats up.
Black Panel Density This controls the amount of heat energy applied to any pixel required
to be black. A higher value gives darker printing, but can cause undesirable blooming
(indefinite edges).
Note • Typically, the set of values should be the same for each color.