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:
Jun. 30, 2015
Filed:
Mar. 27, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Ryosuke Kanai, Kawasaki, JP;
Kohei Matsuda, Fujisawa, JP;
Masao Uyama, Mishima, JP;
Koichiro Takashima, Fujisawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus includes a conductive member paired with one of a developer carrying member and an image bearing member to form a capacitor. A contact-separation member assumes a first position for bringing the developer carrying member into contact with the image bearing member and a second position for separating the developer carrying member from the image bearing member. A detecting unit detects a value relating to a capacitance of the capacitor when a voltage is applied to the capacitor, and a control unit detects whether or not the image forming apparatus is ready for image formation by comparing a first detected result and a second detected result to each other. The first detected result is detected when the contact-separation member assumes the first position, and the second detected result is detected when the contact-separation member assumes the second position.