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:
Nov. 21, 1978
Filed:
Mar. 09, 1977
Yoshihisa Kawai, Atsumi, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An electrophotocopying machine of the electrostatic latent image transfer type employing as a device for projection of images of original documents onto a photosensitive drum an optical fiber device which has a short focal length and permits efficient exposure of a narrow area of the photosensitive drum whereby the drum diameter can be small and machine height may be reduced. The electrophotocopying machine also occupies less area and makes efficient use of electrical power because use is made of a portion of a charging unit area to transmit image light to the photosensitive drum and use is also made of light from the document illumination device to erase the charge on the drum.