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, 2020
Filed:
Aug. 09, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Tadashi Fukuda, Tokyo, JP;
Takahito Fuse, Nagareyama, JP;
Masami Hano, Abiko, JP;
Shota Soda, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a photosensitive member, a first charging roller, a first cleaning member, a second charging roller, and a second cleaning member. The following relationship is satisfied:(0+1+2)−(3+4)≠0where Lrepresents a length of a whole circumference of the first charging roller, Lrepresents a length between a first contact area and a first contact position of the first charging roller and the photosensitive member, Lrepresents a length of a whole circumference of the second charging roller, Lrepresents a length between a second contact area and a second contact position, Lrepresents a length between the first contact position and the second contact position, X represents an integer in a range of 0≤X≤40, and Y represents an integer in a range of 0≤Y≤40.