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. 16, 2014
Filed:
Jun. 05, 2012
Akio Kosuge, Kanagawa, JP;
Shinichi Kawahara, Tokyo, JP;
Nobuo Kuwabara, Kanagawa, JP;
Takeshi Shintani, Kanagawa, JP;
Norio Kudo, Kanagawa, JP;
Daisuke Tomita, Kanagawa, JP;
Akio Kosuge, Kanagawa, JP;
Shinichi Kawahara, Tokyo, JP;
Nobuo Kuwabara, Kanagawa, JP;
Takeshi Shintani, Kanagawa, JP;
Norio Kudo, Kanagawa, JP;
Daisuke Tomita, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus including an image bearing member, a charger, an irradiator, a developing device, a transfer device, a neutralizer, and a varying device is provided. The neutralizer is adapted to neutralize the image bearing member by emitting neutralization light thereto, after a toner image formed on the image bearing member is transferred therefrom. The varying device is adapted to vary an amount of the neutralization light to be emitted to the image bearing member by pulse-width modulation of a voltage to be supplied to the neutralizer. The image forming apparatus satisfies the following formula:>5wherein f (Hz) represents a frequency of the pulse-width modulation and V (mm/s) represents a linear speed of the image bearing member.