The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 2009
Filed:
Nov. 02, 2004
Roy S. Berns, Pittsford, NY (US);
Lawrence A. Taplin, Rochester, NY (US);
Yoshifumi Arai, Nagano-ken, JP;
Michinao Osawa, Nagano-ken, JP;
Roy S. Berns, Pittsford, NY (US);
Lawrence A. Taplin, Rochester, NY (US);
Yoshifumi Arai, Nagano-ken, JP;
Michinao Osawa, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method and apparatus for producing a color conversion profile for use in a color inkjet printer, a color laser printer, or the like. In one embodiment, a spectral printing model converter is used to sample ink amount data to spectral reflectance Rsmp(λ). Using this spectral reflectance Rsmp(λ), colorimetric values CV, CVunder two different viewing conditions are calculated, and an evaluation index EI that includes an index of color difference between the colorimetric values CV, CVis calculated. I another embodiment, an evaluation index EI that includes an index of color difference between sample color represented by sample ink amount data and reference color obtained from a reference color patch is calculated. Sample ink amount data having the best evaluation index EI is then selected as a representative sample. Profiles are created from the plurality of selected representative samples.