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:
Oct. 29, 1991
Filed:
Jun. 30, 1988
Yamato Kitajima, Ramsey, NJ (US);
Kouji Ito, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A slit exposure type photocopier apparatus includes an original document platform on which an original document is to be located. An electrostatic latent image support member receives a projected image of the original document as a result of a scanning optical system and an exposure light source. The scanning optical system includes a projection light assembly which is movable along the optical axis in order to change image magnification. A light measuring sensor can be positioned adjacent a side of the projection lens assembly and can measure light reflected from the original at a position displaced, in the forward scan direction, from the actual position on the original that is being projected as a recorded image on the electrostatic latent image support member. The actual displaced position for light measurement will be a function of the image magnification and will be capable of compensating for the lag time involved in changing the exposure output of the exposure lamp.