US 5,343,280 AGranted

Image fixing apparatus

AssigneeCanon Kabushiki Kaisha

InventorsHiromitsu Hirabayashi, Kensaku Kusaka, Atsushi Arai, Yoshiaki Takayanagi

Life of this patent

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Abstract

An image forming apparatus contains an accommodator for accommodating a recording material together with an image forming device for forming an image on that recording material supplied from the accommodator. A fixing apparatus receives the imaged recording material and includes a heat generating resistor layer, a protection layer covering the heat generating resistor layer and a sheet movable with the recording material in sliding contact with the protection layer, wherein the image is heated by heater through the sheet. A position detector detects the position of the recording material and the power supply to the heat generating resistor layer is started in accordance with the output of the position detector.

Claims2

Dependent claims

An image forming apparatus comprising:

an accommodator for accommodating a recording material;
means for forming a visualized image on the recording material supplied from said accommodator;
fixing means for heating and fixing the visualized image, said fixing means including each of (i) a heat generating resistor layer, (ii) a protection layer covering said heat generating resistor layer, and (iii) a sheet movable with the recording material in sliding contact with said protection layer, wherein the visualized image is heated by heat from said heat generating resistor layer through said sheet;
a position detector for detecting a position of the recording material;
and
power supply means for starting power supply to said heat generating resistor layer in accordance with an output of said position detector.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/135,130Filed 12 Oct 1993 · continuation
Priority: JP 62-14788416 Jun 1987
Granted: 30 Aug 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G03G 15/2003
For fixing, e.g. by using heat: using heat
G03G 15/2017
Using contact heat: structural details of the fixing unit in general, e.g. cooling means, heat shielding means
G03G 15/2021
Structural details of the fixing unit in general, e.g. cooling means, heat shielding means: plurality of separate fixing and/or cooling areas or…
G03G 15/2064
Using contact heat: combined with pressure

Family

Serial206,767Parent of this continuation · filed 15 Jun 1988
Serial668,333Parent of this division · filed 14 Mar 1991
Serial847,323Parent of this continuation · filed 6 Mar 1992
US 5,149,941 AParent of this division · filed 22 Sep 1992
US 5,343,280 AThis patent

From the US filing history. Foreign family members aren’t listed.