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4: Printer Settings and Adjustments
Printing Preferences
P1060728-002 Zebra ZXP Series 1 Card Printer User’s Manual 53
- Monochrome Conversion: Specifies the method of monochrome conversion used in
printing. Different selections have different effects on the way the image is printed.
The options are Diffusion, Halftone, Barcode, Text Mode, and Auto.
• Diffusion: Error diffusion is used primarily where you
have a full color (RGB image with 8 bits per pixel) or
full gray (single color but still 8 bits per pixel) that
you need to print with binary printing (can only print
full-on or full-off; i.e., 1 bit per pixel). Typically
preferred over halftoning (see below) for most images.
• Halftone: To simulate gray in graphics, halftones are
printed. Halftones are arrays of dots arranged in a grid
(e.g., 6x6 or 8x8) to represent each image pixel as a
shade of gray. For dark gray, more grid dots are black.
For light gray, more grid dots are white As the grid
size goes up so does the number of possible output
levels, 6x6 cell has 36 possible output levels while
8x8 has 64. But as cell size increases, there is a
corresponding decrease in resolution.
• Barcode: This is the simplest method for converting
from 8 bits per pixel to 1 bit per pixel.
For example, the input pixel can be a value from 0 to
255. If the threshold is 128, any pixel over 128
becomes full on (1); and any pixel that is less than 128
becomes full off (0). This mode works best for text,
barcodes, line art, logos -- everything except
continuous-tone pictures.
• Text Mode: This mode can be used when you have
black anti-aliased text. Black anti-aliased text is
typically black in the center; but on the edges, it has
shades of gray that get lighter as you move out form
the center of the text. This anti-aliased text will have a
softer looking edge that is less sharp than non anti-
aliased text.
• Auto (default): This mode analyzes the image and optimizes the conversion
(diffusion, halftone, barcode, or text mode) automatically.