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:
Feb. 10, 1981
Filed:
Jan. 17, 1979
Applicant:
Inventors:
Ikuo Seki, Tokyo, JP;
Masahiko Kato, Kodaira, JP;
Assignee:
Toppan Printing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 76 ;
Abstract
A color separation condition determining apparatus which is useful for determining the operation conditions of the color separation step in a color printing process, comprises a scanning section, a masking circuit, an under-color removal circuit, clip circuits, gradation a correction circuit, color correction circuit, a matrix circuit and a color monitor using a color CRT. The invention further includes a method for correcting color signals in the above apparatus and a masking circuit therefor.