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. 29, 2015
Filed:
Jun. 13, 2014
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Shinagawa-ku, Tokyo, JP;
Kazutoshi Takahashi, Mishima, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus comprises a paper detection mechanism configured to detect papers passing through a conveyance path. The paper detection mechanism includes a rotation shaft which extends in a direction orthogonal to a conveyance direction of the paper; a lever integrally arranged on the rotation shaft; a torsion coil spring which is arranged around the outer periphery of the rotation shaft to energize the front end of the lever so that the lever protrudes to the conveyance path; and a sensor which detects the conveyance of paper when the lever pressed by the paper pivots. The torsion coil spring integrally includes a main coil part which is composed of a plurality of turns of coil and has a preset diameter, and a large diameter coil part which is larger in diameter than the main coil part and less in the number of turns than the main body coil part.