Lexmark Se 3455 Guia Do Utilizador
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Enhancing Print Quality
Enhancing
P
rint
Quality
Appendixes
Halftones
Gray-scale objects (such as photographs) whose gray dots have
been converted to a pattern of groups of black dots. These groups,
which are of various sizes, along with the white dots (pixels turned
off), create the illusion of gray shadings: larger groups make the
image appear black or dark gray, while smaller groups make the
image appear light gray.
been converted to a pattern of groups of black dots. These groups,
which are of various sizes, along with the white dots (pixels turned
off), create the illusion of gray shadings: larger groups make the
image appear black or dark gray, while smaller groups make the
image appear light gray.
Screen Frequency
The distance between the centers of the groups of black dots, mea-
sured in lines per inch (lpi); although the group size varies in a
halftone image, the screen frequency remains constant.
sured in lines per inch (lpi); although the group size varies in a
halftone image, the screen frequency remains constant.
Print Quality Overview
Use the following diagram as an easy guide to help you select the
optimum print quality for your application.
optimum print quality for your application.