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:
Aug. 20, 1991
Filed:
Jan. 30, 1990
Michitoshi Akao, Nagoya, JP;
Kenji Sakakibara, Ichinomiya, JP;
Hideo Yoshihara, Kasugai, JP;
Takayuki Hayashi, Nagoya, JP;
Takashi Nakata, Nagoya, JP;
Hiroaki Kimura, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A sheet supplying device for supplying an uppermost sheet of a stack of sheets in a sheet cassette used in an image forming apparatus includes suction cups movable into and out of contact with the uppermost sheet in the sheet cassette, an evacuator for developing a vacuum in the suction cups to enable the suction cups to attract the uppermost sheet, a moving member for upwardly and downwardly moving the suction cups to pick up the sheet from the sheet cassette, a sheet feeding member for feeding the sheet from the moving member along a sheet feed path, and a control system for judging on the basis of a detection signal from each sensor for detecting an image forming error provided in the image forming apparatus whether the error occurs during the sheet supplying operation, and when judging that the image forming error occurs during a sheet supplying operation, the control unit ceasing the sheet supplying operation and controlling the driving of at least one of the suction cups, the evacuator, moving member and the sheet feeding member so that at least one of those members carries out a predetermined operation selected from the series of operations to be performed by at least one of the members.