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. 27, 2011
Filed:
May. 05, 2008
Tomoharu Nishikawa, Hirakata, JP;
Toshihide Taniguchi, Chiyoda-ku, JP;
Toshiyuki Sakai, Chiyoda-ku, JP;
Norikazu Okabe, Toyokawa, JP;
Hiromasa Ueno, Toyohashi, JP;
Tomoharu Nishikawa, Hirakata, JP;
Toshihide Taniguchi, Chiyoda-ku, JP;
Toshiyuki Sakai, Chiyoda-ku, JP;
Norikazu Okabe, Toyokawa, JP;
Hiromasa Ueno, Toyohashi, JP;
Konica Minolta Business Technologies, Inc., Chiyoda-Ku, Tokyo, JP;
Abstract
A mono-component developing apparatus including a developing roller which transports toner supported on an outer circumferential face of a center portion toward a developing area by rotating while frictionally sliding on a sealing member on each of two end portions. The developing roller includes surface processing areas having a spiral shape, placed on each of outer circumferential faces of the two end portions. An angle, made by a spiral direction of each surface processing area and the rotation direction, is an acute angle. The developing roller inhibits toner leakage, with the driving torque of the developing roller being only slightly increased.