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1. US20090035027 - Developing roller

Office United States of America
Application Number 11917249
Application Date 29.06.2005
Publication Number 20090035027
Publication Date 05.02.2009
Grant Number 08007426
Grant Date 30.08.2011
Publication Kind B2
IPC
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
13
Rolls, drums, discs, or the like; Bearings or mountings therefor
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G
ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15
Apparatus for electrographic processes using a charge pattern
06
for developing
08
using a solid developer, e.g. powder developer
F16C 13/00
G03G 15/08
Applicants Konica Minolta Business Technologies, Inc.
Inventors Shirose Meizo
Uchino Satoshi
Agents Buchanan Ingersoll & Rooney PC
Title
(EN) Developing roller
Abstract
(EN)

A developing roller that can form a toner image with high quality includes: a supporting shaft, and at least one resin layer formed on a peripheral face of the supporting shaft, the resin layer containing carbon black in which a number average Feret's diameter is in a range from 5 to 300 nm and primary particles account for 5% or more on a number basis, and the carbon black being dispersed in a base resin material thereof.

Also published as
EP5765438