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:
Apr. 04, 2006
Filed:
Dec. 15, 2003
Nobutaka Takeuchi, Kanagawa, JP;
Hajime Oyama, Chiba, JP;
Hiromitsu Takagaki, Kanagawa, JP;
Takayuki Koike, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Hajime Oyama, Chiba, JP;
Hiromitsu Takagaki, Kanagawa, JP;
Takayuki Koike, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A method of developing a latent image formed on an image carrier with toner, including causing a developer carrier, which faces the image carrier and accommodates a magnet therein, to support a developer having a toner and a magnetic carrier supporting the toner and convey the developer to a developing zone between the developer carrier and the image carrier, and providing an apparent coating ratio M of a surface of the developer carrier coated with the developer. The coating ration M is, in a zone upstream of the developing zone in a direction of rotation of the developer carrier, expressed as M=αA+β (%), where α denotes a coefficient of the coating ratio, Adenotes an amount of developer for a unit area, β denotes a value determined by a powder characteristic of the developer for an apparent coating ratio calculated with A=0, and the coating ratio M is between 90% and 120%.