Back to results
US 7,742,713 B2Granted
Measurement of engine response curve in the presence of process direction noise
AssigneeXerox Corporation
InventorsHoward Mizes, Claude S. Fillion
Life of this patent
Estimating the term…
Abstract
Disclosed is a method and system for compensating for printer cross-process nonuniformity. The method and system provide a means to offset a cross-process uniformity profile associated with an image output device, such as a printer, where process direction noise is measured and the cross-process uniformity profile is adjusted accordingly to provide a better representation of the image output device cross-process uniformity profile.
Claims20
A method of compensating for printer cross-process nonuniformities comprising:
- (a) printing a plurality of printer cross-process aligned test patterns on a substrate associated with the printer, the plurality of test patterns comprising a plurality of print densities associated with a plurality of respective target print densities, wherein the plurality of test patterns are configured to subsequently quantify printer process direction noise associated with the printer;
- (b) determining the actual print density associated with the plurality of test patterns relative to a plurality of printer cross-process locations to generate an initial printer cross-process uniformity profile;
- (c) determining the effects of printer process direction noise on the determined actual print densities associated with the plurality of test patterns;
- (d) generating a second printer cross-process uniformity profile which offsets the effects of the determined printer process direction noise;
- and
- (e) generating a TRC which compensates for the second printer cross-process uniformity profile.
3 more elements
A computer program product comprising:
- a computer-usable data carrier storing instructions that, when executed by a computer, causes the computer to perform a method of compensating for printer cross-process nonuniformities comprising:
- (a) printing a plurality of printer cross-process aligned test patterns on a substrate associated with the printer, the plurality of test patterns comprising a plurality of print densities associated with a plurality of respective target print densities, wherein the plurality of test patterns are configured to subsequently quantify printer process direction noise associated with the printer;
- (b) determining the actual print density associated with the plurality of test patterns relative to a plurality of printer cross-process locations to generate an initial printer cross-process uniformity profile;
- (c) determining the effects of printer process direction noise on the determined actual print densities associated with the plurality of test patterns;
- (d) generating a second printer cross-process uniformity profile which offsets the effects of the determined printer process direction noise;
- and
- (e) generating a TRC which compensates for the second printer cross-process uniformity profile.
4 more elements
A xerographic printing process comprising:
- (a) printing a plurality of printer cross-process aligned test patterns on a substrate associated with the printer, the plurality of test patterns comprising a plurality of print densities associated with a plurality of respective target print densities, wherein the plurality of test patterns are configured to subsequently quantify printer process direction noise associated with the printer;
- (b) determining the actual print density associated with the plurality of test patterns relative to a plurality of printer cross-process locations to generate an initial printer cross-process uniformity profile;
- (c) determining the effects of printer process direction noise on the determined actual print densities associated with the plurality of test patterns;
- (d) generating a second printer cross-process uniformity profile which offsets the effects of the determined printer process direction noise;
- and
- (e) generating a TRC which compensates for the second printer cross-process uniformity profile.
3 more elements
Dependencies are inferred from the claim text.