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:
Oct. 21, 2014
Filed:
Mar. 07, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Tomoyasu Mizuno, Mishima, JP;
Canon Kabusiki Kaiska, Tokyo, JP;
Abstract
A sheet feed device includes a second detection unit which detects a state of a detection switch unit whose state is switched due to the change of state of the sheet feed device; a signal conversion unit which converts a detection signal obtained in accordance with a state of the detection switch unit into a serial signal; a communication line which connects a first detection unit of an image forming device to the second detection unit; and a signal line configured to connect the first detection unit to the signal conversion unit. When the sheet feed device is in a first state, the first detection unit receives information indicating the state detected by the second detection unit via the communication line, and thereby detects the change of state of the sheet feed device.