Regulated amount measuring apparatus, and regulated amount...

Optics: measuring and testing – By shade or color

Reexamination Certificate

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C356S425000, C250S226000

Reexamination Certificate

active

10999959

ABSTRACT:
A regulated amount measuring apparatus indicates a difference between two colors, for example, a discrepancy between a color of a printed matter in proof and a target color, to provide an index for a color regulation. A profile of the printing machine of interest is stored. Two sets of colorimetry values obtained through twice colorimetry for a proof image and the printed matter of a proof for instance are converted through the color profile to obtain two sets of coordinate values on a device color space, for example, CMY color space. Differences ΔC, ΔM and ΔY between the two sets of coordinate values are computed and then displayed.

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patent: 0 228 347 (1987-07-01), None
patent: 2505434 (1996-04-01), None

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