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. 22, 1992
Filed:
Apr. 23, 1991
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A paper feed mechanism comprises a feed roller rotatable in one direction at a predetermined timing, which rotates in an overrunning manner if such need arises, a separation roller disposed in contact with the feed roller, which rotates together with the feed roller when a load torque exceeds a predetermined value, and a pickup roller disposed upstream of the feed roller in the direction of rotation of the feed roller for feeding a paper sheet according to a paper feed instruction, a device for varying the pressing force of the separation roller against the feed roller, a detector provided in the vicinity of the feed roller and the separation roller for detecting the speed of the paper sheet fed by the feed roller and the separation roller; and a controller for controlling the pressing force of the separation roller according to the detection signal from the detection.