Electrophotographic toner and image-forming system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7022448
SERIAL NO

10652479

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An electrophotographic toner containing: a fixing resin, a colorant, and wax. The wax at least contains hydrocarbon wax having a number-average molecular weight of not higher than 600, and polyethylene wax having a number-average molecular weight of not higher than 600, a melting viscosity of lower than 15 mPa·s at 140° C. and a crystallinity of lower than 95%. A ratio of the hydrocarbon wax to the polyethylene wax is in a range of from 1:10 to 2:1. A maximum of absorption peaks in a heat-up time absorption calorie curve in a DSC curve of the toner measured by a differential scanning calorimeter is at a temperature not higher than 75° C. An onset temperature in absorption of heat is not higher than 65° C.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
RICOH PRINTING SYSTEMS LTDTOKYO

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoshi, Nobuyoshi Ibaraki, JP 30 353
Kaneko, Tadahiro Ibaraki, JP 11 153
Kawanishi, Tsuneaki Ibaraki, JP 27 271
Kobayashi, Junji Ibaraki, JP 62 329
Shimizu, Ryuuichi Ibaraki, JP 16 125
Yaguchi, Shigenori Ibaraki, JP 47 421

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation