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:
Nov. 16, 1993
Filed:
Sep. 18, 1992
Joseph Chang, Hsin-Chu, TW;
Advanced Scientific Corp., Taiwan, TW;
Abstract
This invention discloses a sheet feeder which comprises a plurality of micro switches, a light sensitive switch, and a controller board having an erasable programmable read only memory (EPROM) for receiving signals from the micro switch and sending pre-programmed responses to control the movement a pair of motors which in turn cause a paper carrying elevator to ascend and send the feed paper sheets into a laser printer. The capacity of the sheet feeder of this invention is several times that of a conventional tray-shaped sheet feeder. The front face of this sheet feeder is provided with a receiving rack, each of whose two ends is furnished with an oblong hole. A sheet guide is pivotally connected to the sheet feeder using two small round bolts inserted through the two oblong holes respectively. The height of the sheet guide can be adjusted within a given limit to accommodate the varying feeding port height of a wide variety of laser printers. The sheet guide can be folded down completely against the front face of the sheet feeder to provide packing and shipping convenience.