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Patent Searching and Data


Title:
PRINTED MATTER INSPECTION APPARATUS
Document Type and Number:
Japanese Patent JPH1067099
Kind Code:
A
Abstract:

To detect the misregister of a pattern printing position regardless of the presence of a register mark and to accurately compare the colors of the corresponding positions between printed matters.

A printed matter inspection apparatus is equipped with a sensor 22 reading the image of the predetermined region within the pattern of reference printed matter, an operation part 32 performing the pattern matching processing of the image of the predetermined region with respect to printed matter to be inspected and detecting the misregister of the pattern printing position of the printed matter to be inspected with respect to the reference printed matter and correcting the coordinates system of the pattern printing position of the printed matter to be inspected corresponding to this shift and a colorimeter 20 measuring the colors at the corresponding positions in the respective printed matters corresponding to the coordinates system after correction.


Inventors:
HIROTA MORIKAZU
HAYASHI JUNICHI
SHIMAMURA YOSHIKAZU
KURAMOTO TAKASHI
KAWAMURA SADAKAZU
Application Number:
JP22830596A
Publication Date:
March 10, 1998
Filing Date:
August 29, 1996
Export Citation:
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Assignee:
TOPPAN PRINTING CO LTD
HITACHI ELECTRONICS
International Classes:
B41F33/14; G06T1/00; G06T7/00; (IPC1-7): B41F33/14; G06T7/00
Attorney, Agent or Firm:
Takehiko Suzue (5 outside)