Method of controlling printed line quality

Details Method of controlling printed line quality Method of controlling printed line quality

2004-11-19

2008-10-28

Lee, Thomas D (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S002100, C382S266000, C382S258000

Reexamination Certificate

active

07443538

ABSTRACT:
A printer embodied rendering algorithm for detecting and configuring positive and negative thin lines to be rendered such that when a bright-colored thin line on a dark background (negative thin line) is rendered and the result is stored in an RGB buffer in a printer system, the thin line thickness is increased only when the brightness of the line color is higher than a predetermined threshold value and the thin line thickness is smaller than a predetermined threshold value. According to the rendering algorithm, it is possible to prevent a negative thin line from disappearing or becoming thinner without increasing a positive thin line thickness, thereby improving the visibility of the thin line.

REFERENCES:
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patent: 5801843 (1998-09-01), Overton
patent: 5966134 (1999-10-01), Arias
patent: 1308924 (2003-05-01), None

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