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:
Dec. 28, 1993
Filed:
Mar. 24, 1992
Kazutaka Takahashi, Yamato, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An image forming apparatus for forming an image based on an original image of an original on an image carrying member. The apparatus has an auto exposure amount setting mode and a manual exposure amount setting mode. Reflected light from the original image device is detected. A manual device can be moved from a first position to a second position by manual operation, for setting the exposure amount according to a varied amount. Included are a first energizing device for energizing the emitting device on the basis of a result of detecting of the detecting device in the auto exposure amount setting mode, a second energizing device for energizing the emitting device according to the setting of the setting device, a device for determining if a difference between the first position and the second position is larger than a predetermined value, and a device for changing the auto exposure amount setting mode to the manual amount setting mode when the determining device determines the varying condition in the auto exposure amount setting mode.