Self-indicating test page for use in setting density level and c

Details Self-indicating test page for use in setting density level and c Self-indicating test page for use in setting density level and c

1996-03-06

2000-03-07

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347251, 347254, 399 39, 399 49, 399 72, G03G 1501

Patent

active

060347112

ABSTRACT:
A test page, system, and method are used to set a color density level of a laser printer, by producing a dot gain test pattern. The laser printer has at least one primary color. The dot gain test pattern is self-indicating and thus requires no external reference in order to determine a correct color density level. A preferred embodiment of the dot gain test pattern includes (a) a stable pattern having a color density which is stable with respect to changes in the laser printer operating conditions, and (b) a sensitive pattern having a color density which is sensitive to changes in the operating conditions, wherein the sensitive pattern in reference to the stable pattern indicates the density level of the laser printer for the at least one primary color. Additionally, in a preferred embodiment, the stable pattern includes a uniform coarse dot pattern, and the sensitive pattern includes a gradient of fine dot densities, the gradient printed adjacent to the coarse dot pattern, wherein a correct density level of the laser printer for the at least one primary color is indicated when a mid-spectrum area of the fine dot gradient appears to blend into the coarse dot pattern.

REFERENCES:
patent: 4310248 (1982-01-01), Meredith
patent: 5604567 (1997-02-01), Dundas et al.

Affiliated with

Also associated with

Rating

Self-indicating test page for use in setting density level and c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-indicating test page for use in setting density level and c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-indicating test page for use in setting density level and c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-367804