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:
Aug. 06, 1985
Filed:
Apr. 14, 1983
Hiroshi Kimura, Habikino, JP;
Masahiko Hisajima, Osaka, JP;
Kiyoshi Shibata, Osaka, JP;
Yoichiro Irie, Suita, JP;
Kiyoshi Morimoto, Osaka, JP;
Takashi Nagashima, Sakai, JP;
Yasuhiko Yoshikawa, Ikoma, JP;
Kiyonori Yamamoto, Neyagawa, JP;
Masahiro Watashi, Ikoma, JP;
Shinsuke Yoshinaga, Sakai, JP;
Toshihiko Yamamoto, Takaishi, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
A variable magnification electrostatic copying apparatus comprising a transparent plate on which to place a document to be copied, an optical system for projecting the image of the document onto an electrostatographic photosensitive member at any desired projecting ratio selected from a plurality of projecting ratios in an exposure zone located along the moving path of the photosensitive member, and a driving means for moving at least a part of the optical system and the transparent plate relative to each other. The optical system includes at least one position-variable optical element assembly adapted to be held at any of a plurality of positions corresponding to the aforesaid plurality of projecting ratios. The variable magnification electrostatic copying apparatus includes a unique improved means for varying the projecting ratio of the optical system by moving the position-variable optical element assembly.