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:
Sep. 13, 1988
Filed:
Sep. 12, 1986
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A paper feeder is disclosed which has a plurality of trays arranged one above another and a paper feed unit movable up and down to one of the trays selected. To control paper transport speed, a paper sensor is actuated prior to a level sensor during movement of the paper feed unit to a paper feed position, and a paper feed unit drive motor begins to be decelerated in response to an 'on' signal of the paper sensor. The amount of papers remaining in any of the trays is detected by counting drive pulses applied to a pulse motor, which is adapted to drive the paper feed unit. After a power source has been turned on, the amounts of remaining papers in all the trays are detected and displayed prior to a copying operation.