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:
Jan. 23, 1990
Filed:
Jun. 23, 1988
Applicant:
Inventors:
Akira Kuwabara, Kyoto, JP;
Yasufumi Koyama, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; G01D / ;
U.S. Cl.
CPC ...
346108 ; 346160 ;
Abstract
An apparatus for recording a binary image of a printed circuit pattern on photosensitive material. First and second rows of recording spots scan the photosensitive material. The second row is shifted by a length corresponding to approximately half the diameter of the recording spots. Each of the recording spots covers an area equal to approximaqtely four pixels. Whether a pixel is to be exposed is determined on the basis of a logical sum or product of data corresponding to four adjacent pixels.