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.

Date of Patent:
Mar. 15, 1977

Filed:

Nov. 26, 1973
Applicant:
Inventors:

Takaji Washio, Toyonaka, JA;

Tatsuo Aizawa, Osaka, JA;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-8 ; 355 14 ; 355 51 ;
Abstract

An electrostatic photographic copying apparatus wherein the image-forming device, the optical device, the transfer device and the transfer paper transferring device are controlled according to the rotation of the rotary drum so that one cycle of the copying operation is completed while the rotating drum, equipped with a photosensitive element on which to form an image, is rotated through two turns. Substantially the entire surface of the rotary drum can be utilized as an image-forming area by rotating the rotary drum through two turns in one cycle of the copying operation.


Find Patent Forward Citations

Washio, Takaji. (1977). Electrostatic photographic copying apparatus (U.S. Patent No. 4012138). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4012138

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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