Patent ID: 6241339
Filing Date: 2001-06-05
Classification: B41J,H04N

Abstract:
A method of correcting print gradation, comprising the steps of:converting device-dependent C, M, Y, K halftone-dot % data to colorimetric data with color converting means generated on the basis of standard printing conditions and having gradation characteristics inherent in the standard printing conditions;placing gradation converting means for respective colors C, M, Y, K for converting the C, M, Y, K halftone-dot % data to gradation characteristics corresponding to desired printing conditions, in front of said color converting means; andgenerating gradation characteristics set in said gradation converting means for the respective colors C, M, Y, K such that a change in input halftone-dot % of the gradation characteristics will be equalized to a change in output halftone-dot % of gradation characteristics inherent in said color converting means.