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:
Mar. 07, 1989
Filed:
Sep. 25, 1987
Masashi Kimura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Light beam radiated from an exposure light source of a copying machine is reflected by a predetermined portion of an original. First reflected light beam of reflected light passing through a SELFOC lens is radiated on the surface of a photosensitive body to form an electrostatic latent image thereon. An original image density detecting device is provided next to the SELFOC lens and includes a housing having a slit formed in its upper wall along the axial direction of the photosensitive body, a reflecting plate, provided on an inner bottom wall surface of the housing, and having an aluminum tape adhered on its surface, and a photosensor mounted on an inner upper wall surface of the housing. Of the light beams reflected by the original, second reflected light beam reflected near the SELFOC lens and not passing therethrough is incident into the housing from the slit and reaches the reflecting plate. Third reflected light beam reflected on the surface of the reflecting plate is received by the photosensor, and the photosensor detects the original-image density.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile