Developing device, and image forming apparatus and process cartridge incorporating same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9921541
SERIAL NO

14720612

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A developing device includes a developer bearer to carry, by rotation, developer including toner and magnetic carrier to a developing range facing a latent image bearer; a casing including a developer container and an opening to expose a part of the developer bearer disposed in the casing; an opposing face of the casing including a conductive material and opposing to a surface of the developer bearer downstream from the developing range in a direction of rotation of the developer bearer; a developing bias source to apply a developing bias to the developer bearer; and an insulation layer disposed on the opposing face of the casing. The opposing face is disposed across, from the developer bearer, a casing gap sized to allow the developer borne on the developer bearer to contact the opposing face.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • RICOH COMPANY, LTD.

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Azami, Akira Kanagawa, JP 24 178
Kishi, Yoshiharu Kanagawa, JP 13 187
Koike, Toshio Tokyo, JP 103 1270
Kondoh, Keinosuke Kanagawa, JP 18 139
Mikuniya, Kentaro Tokyo, JP 10 113
Morinaga, Mutsuki Kanagawa, JP 15 84
Ogawa, Yoshiko Tokyo, JP 25 197
Shimizu, Yasunobu Kanagawa, JP 76 1248
Takahashi, Yutaka Kanagawa, JP 227 4331
Yamada, Masaaki Tokyo, JP 99 2190

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 20, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 20, 2029
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00