QMS 2060 User Manual - page 33

Configuring the

Windows NT

3.51 Printer

Driver

2-19

Working with the Printer Drivers

Halftone Pattern

Device Gamma

Purpose

Specifies the cell size for the halftone pattern.

Choices

2x2, 2x2 Enhanced, 4x4, 4x4 Enhanced, 6x6, 6x6 Enhanced, 

8x8, 8x8 Enhanced, 10x10, 10x10 Enhanced, 12x12, 12x12 

Enhanced, 14x14, 14x14 Enhanced, 16x16, 16x16 Enhanced

Default

6x6 Enhanced

Notes

Halftone pattern is defined by the size of the cells used in the 

pattern. Cells are measured in pixels.

A 4x4 cell contains 16 pixels. Larger cells print a more coarsely 

grained picture; however, larger cells allow a greater range of 

grays or colors to be printed.

Enhanced cell patterns are optimized to produce greater 

resolution. If your graphic prints with an unwanted pattern of 

lines or an unwanted moiré pattern, try printing it again, using 

the same cell size but without enhancement.

Purpose

Sets the gamma correction value of the printer.

Range

0.1344-6.5000

Default

1.2500

Notes

Often in scanned images grayscaling may be too light or too 

dark to show details clearly. Using gamma correction on a 

grayscale image is similar to using a graphic equalizer on a 

home stereo; the range of gray levels can be adjusted for the 

best possible image. This sharpens the overall midrange 

contrast while blacks (shadows) and white (highlights) keep 

their original values.