US 2014/0270872 A1 · FIXING DEVICE AND IMAGE FORMING APPARATUS

Abstract

A fixing device includes a fixing rotary body rotatable in a predetermined direction of rotation and a heater disposed opposite and heating the fixing rotary body. An opposed body contacts the fixing rotary body to form a fixing nip therebetween through which a recording medium is conveyed. A heat shield is movable in a circumferential direction of the fixing rotary body and interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater. A driver is connected to the heat shield to drive and move the heat shield between a shield position where the heat shield is interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater and a retracted position where the heat shield is retracted from the shield position. A reinforcement is mounted on a long edge of the heat shield.

Claims16

Dependent claims

A fixing device comprising:

a fixing rotary body rotatable in a predetermined direction of rotation;
a heater disposed opposite and heating the fixing rotary body;
an opposed body contacting the fixing rotary body to form a fixing nip therebetween through which a recording medium is conveyed;
a heat shield movable in a circumferential direction of the fixing rotary body and interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater;
a driver connected to the heat shield to drive and move the heat shield between a shield position where the heat shield is interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater and a retracted position where the heat shield is retracted from the shield position;
and
a reinforcement mounted on a long edge of the heat shield.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/141,334Filed 26 Dec 2013

Priority

JP 2013-05378515 Mar 2013

Published

18 Sep 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G03G 15/2017
Using contact heat: structural details of the fixing unit in general, e.g. cooling means, heat shielding means
G03G 15/2042
With means for controlling the fixing temperature: specially for the axial heat partition
G03G 15/2053
Using contact heat: structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
G03G 21/1832
Prevention of damage or soiling, e.g. mechanical abrasion: shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering

Fixing device and image forming apparatus

Life of this patent

Fixing device and image forming apparatus

Life of this patent

Abstract

Claims16