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:
Apr. 10, 1984
Filed:
Oct. 15, 1981
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356380 ; 356445 ;
Abstract
A calibration method is disclosed for a device in which an offset printing plate is optically scanned to measure the picture pattern area of the printing plate from the quantity of light reflected therefrom in which average values are obtained by scanning the printing plate plural times. The maximum and minimum of the average values are selected respectively as the quantity of light reflected from the non-printing-image region of the printing plate and as the quantity of light reflected from the printing image region of the printing plate in order to perform the calibration.