Title:
画像内カラー計測を用いたウェブ印刷機のカラー制御
Document Type and Number:
Japanese Patent JP2008528341
Kind Code:
A
Abstract:
Accurate on-line color control for a printing press can be obtained using intra-image color control. A concurrent spectrophotometer and imaging system can capture spectral reflectance data from predetermined measurement areas for each ink key zone of the press. The spectral reflectance data can be compared to target reflectance values in the same standard color space, and a determination can be made as to whether the differences between the measured and target values exceed predetermined tolerances. If the differences exceed these tolerances, a necessary adjustment to the appropriate ink key can be calculated to bring the color differences back to within tolerance. This approach is particularly beneficial in web offset printing, where the printed image is constantly moving and the press conditions are particularly variable.
Inventors:
Headley, steven
Bridges, david
Bridges, david
Application Number:
JP2007554144A
Publication Date:
July 31, 2008
Filing Date:
January 26, 2006
Export Citation:
Assignee:
Delaware Capital Formation, Inc.
International Classes:
B41F31/02; G01J3/46
Attorney, Agent or Firm:
Yuzo Yamazaki
Naoto Sugiyama
Shirogane Expo
Toshiaki Akamatsu
Okuko Masako
Ichiro Tasaka
Ono Wataru
Shun Hosaka
Naoto Sugiyama
Shirogane Expo
Toshiaki Akamatsu
Okuko Masako
Ichiro Tasaka
Ono Wataru
Shun Hosaka