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:
May. 10, 1994
Filed:
Oct. 08, 1991
Shinichi Hirahata, Kakamigahara, JP;
Tsuyoshi Ohashi, Hashima, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
In an image recording apparatus including a rotary drum on which a photosensitive sheet is wound, the drum is rotated by a motor through a speed reduction gear assembly to rotate at a constant speed V. To maintain an average exposure amount applied to the photosensitive sheet at constant as it is not the case when the rotational or peripheral speed of the drum vary due to a backlash of the speed reduction gears or a load imposed on the drum, a speed detector is attached to the shaft of the drum to detect the rotational speed of the drum. Based on the detected rotational speed, the exposure amount is increased or decreased by .DELTA.V/V times as much as the average exposure amount where V is a regular rotational speed of the drum and .DELTA.V is a variation in the drum speed from the speed V.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile