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:
May. 08, 2001
Filed:
May. 10, 2000
Sang-Jin Bae, Suwon, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
An automatic sheet feeder of a printing machine feeds paper by a rotational pressing force exerted between a paper friction fed section and a paper feeding roller. The automatic sheet feeder includes an idle pad roller rotated in contact with the paper feeding roller by the rotational pressing force exerted on the paper feeding roller in absence of paper in the paper loading section, and an elastic member for elastically controlling the rotational movement of the idle pad roller in contact with the idle pad roller while the idle pad roller is rotated by the rotational pressing force of the paper feeding roller. Accordingly, even when the paper feeding operation is carried out in the absence of paper in the paper loading section, the frictional load between the paper feeding roller and the paper friction pad is minimized through the rolling friction operation of the idle pad roller. As a result, paper double feeding or slippage caused due to the abrasion of the paper feeding roller is prevented, while the paper feeding operation is efficiently carried out for a long period of time by preventing the faulty feeding of paper. Further, since there is no overload by the high frictional force exerted on the paper feeding roller, the stepping out or abrasion of the components is prevented, and the life span of the printing machine is lengthened, while the resistance and reliability of the product are enhanced.