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. 01, 2010
Filed:
Oct. 20, 2006
Minoru Nakamura, Susono, JP;
Masahiro Watanabe, Mishima, JP;
Kazuaki Nagaoka, Susono, JP;
Hidenori Satoh, Odawara, JP;
Minoru Nakamura, Susono, JP;
Masahiro Watanabe, Mishima, JP;
Kazuaki Nagaoka, Susono, JP;
Hidenori Satoh, Odawara, JP;
Canon Kabushiki Tokyo, , JP;
Abstract
A developing roller having a surface layer which contains a urethane resin composed of a reaction product of an isocyanate with a group of specific alcohols and has a surface having a contact angle to ethylene glycol of from 60.0 degrees or more to 90.0 degrees or less and a contact angle to diiodomethane of from 30.0 degrees or more to 38.0 degrees or less. The developing roller is highly reliable as having controlled banding which is an image difficulty caused at the part of contact between the developing roller and a developer feed roller.