Zebra ZXP 1 Руководство по драйверам Mac OS (en) онлайн [9/20] 402417

• Diffusion: Error diffusion is used primarily where you

have a full color (RGB with 8 bits per pixel) or full gray

(single color but still 8 bits per pixel) image 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.

However, 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 large text, barcodes, line art, logos --

everything except continuous-tone pictures.

• Text: This mode is similar to Barcode mode, except

lines appear thicker. Thus, it is best for small text and

anti-aliased text. 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.

Anti-aliased text will have a softer looking edge that is

less sharp than non anti-aliased text. The thicker lines of

Text mode will make the black center of anti-aliased text

appear larger, making the text more legible. Conversely,

Text mode is not recommended for barcodes, as thicker

bars often bleed into each other and make the barcode

unreadable.

• Printing Mode: Sets the type of printing required. The options are Print (which

allows printing as well as printing with magnetic encoding), Encode Only (which

allows magnetic encoding only; printing will not occur), and Print and Encode

on Same Side (which prints on the same side as the magentic encoding stripe).

(note: the Print and Encode on Same Side option only appears when Print on

both sides is set to No).

P1086665-001 ZXP Series 1 and 3 Mac OSX Driver User's Guide 5

Operation

Card Setup