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. 15, 1995
Filed:
Mar. 15, 1994
Masakazu Miyata, Ryugasaki, JP;
Tomoko Nagano, Ibaraki, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
A cut sheet feeder for an image forming apparatus is basically formed of one sheet feed mechanism for picking up stacked cut sheets at a single sheet feed position, a sheet feed unit vertically movable relative to the sheet feed mechanism, a cassette detachably attached to the sheet feed unit and containing the cut sheets, and a sheet feed table vertically movably situated inside said sheet feed unit and carrying a large number of the cut sheets.. The feeder further includes a cassette presence detection device for detecting presence or absence of the cassette on the sheet feed unit, a cover detection device for indicating an opening status of a cover for the sheet feed unit, a mode establishment device for establishing a cassette feed mode or a table feed mode, and a mode control device for controlling the sheet feed unit. The mode control device lowers the sheet feed unit to a predetermined position in case the cassette feed mode is changed to the table feed mode by the mode establishment device while the cover detection device outputs a detection signal indicating a closed status of the cover and the cassette presence detection device outputs a signal indicating the presence of the cassette.