Patent US3928646A successfully refreshed from Google Patents.
EP0406892A2
Expired / Lapsed
EP
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Image fixing apparatus and image forming apparatus
Assignee: Canon Inc
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Filing: 1990-07-06
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Granted: —
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Expires: 2010-07-06
Abstract
Abstract An image fixing apparatus includes a heater (20) which is fixed in operation; a film (24) slidable relative to the heater (20) and movable with a recording material wherein a visualized image on the recording material is heated by heat from the heater (20) through the film (24); and air discharging fan (101) for discharging air around the film (24).
Inventors
- 👤 Yoshiyuki C/O Canon Kabushiki Kaisha Koshimizu
- 👤 Tsunetoshi C/O Canon Kabushiki Kaisha Nagata
- 👤 Masamutsu C/O Canon Kabushiki Kaisha Azuma
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:44
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2064
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
53 words
An image fixing apparatus, comprising: a heater which is fixed in operation; a film slidable relative to said heater and movable with a recording material, wherein a visualized image on the recording material is heated by heat from said heater through said film; and air discharging means for discharging air around said film.
Claim 2
Dependent Claim
53 words
An image fixing apparatus, comprising: a heater which is fixed in operation; a film slidable relative to said heater and movable with a recording material, wherein a visualized image on the recording material is heated by heat from said heater through said film; and air discharging means for discharging air around said film.
Claim 3
Dependent Claim
26 words
An apparatus according to Claim 1, further comprising a driving roller for driving said film, and said air discharging means discharges air adjacent said driving roller.
Claim 4
Dependent Claim
38 words
An apparatus according to Claim 1, wherein said heater extends in a direction substantially perpendicular to a movement direction of said film, and wherein said air discharging means includes a cross-flow extending along a length of said heater.
Claim 5
Dependent Claim
27 words
An apparatus according to Claim 1, wherein said discharging means discharges the air downstream of said heater with respect to a movement direction of the recording material.
Claim 6
Dependent Claim
17 words
An apparatus according to Claim 1, wherein said film is in the form of an endless belt.
Claim 7
Dependent Claim
37 words
An apparatus according to Claim 1, wherein said heater has a heat generating resistor layer extending in a direction substantially perpendicular to a movement direction of the recording material and generating heat upon electric power supply thereto.
Claim 8
Dependent Claim
22 words
An apparatus according to Claim 6, wherein there is no air layer between said heat generating resistor layer and the visualized image.
Claim 9
Dependent Claim
17 words
An apparatus according to Claim 1, wherein the visualized image is a powdery toner image not fixed.
Claim 10
Dependent Claim
58 words
An image fixing apparatus, comprising: a heater which is fixed during an image fixing operation; a film slidable relative to said heater and movable together with a recording material, wherein a toner image on the recording material is heated by heat from said heater through said film; and air supply means for supplying dried air into said apparatus.
Claim 11
Dependent Claim
58 words
An image fixing apparatus, comprising: a heater which is fixed during an image fixing operation; a film slidable relative to said heater and movable together with a recording material, wherein a toner image on the recording material is heated by heat from said heater through said film; and air supply means for supplying dried air into said apparatus.
Claim 12
Dependent Claim
18 words
An apparatus according to Claim 9, wherein said air supply means supplies the dried air to said film.
Claim 13
Dependent Claim
17 words
An apparatus according to Claim 10, wherein said film is in the form of an endless belt.
Claim 14
Dependent Claim
48 words
An apparatus according to Claim 9, wherein said image fixing apparatus is used with an image forming apparatus provided with an image forming station for forming a visualized image on the recording material, and wherein said air supply means supplies the air having cooled said image forming apparatus.
Claim 15
Dependent Claim
33 words
An apparatus according to Claim 12, wherein said image forming apparatus includes an illumination system for illuminating an original, and wherein said air supply means supplies the air having cooled said illumination system.
Claim 16
Dependent Claim
40 words
An apparatus according to Claim 9, wherein said heater extended in a direction substantially perpendicular to a movement direction of said film, and wherein said air supply means includes a cross-flow fan extending in a longitudinal direction of said heater.
Claim 17
Dependent Claim
31 words
An apparatus according to Claim 9, wherein said air supply means supplies the dried air to a downstream of said heater with respect to a movement direction of the recording material.
Claim 18
Dependent Claim
37 words
An apparatus according to Claim 9, wherein said heater has a heat generating resistor layer extending in a direction substantially perpendicular to a movement direction of the recording material and generating heat upon electric power supply thereto.
Claim 19
Dependent Claim
22 words
An apparatus according to Claim 16, wherein there is no air layer between said heat generating resistor layer and the visualized image.
Claim 20
Dependent Claim
121 words
An image fixing apparatus, comprising: a heater which is fixed during an image fixing operation; a film slidable relative to said heater and movable together with and in cross contact with a recording material, wherein a toner image on the recording material is heated and fused by heat from said heater through said film; a pressing rotatable member for urging the recording material and said film toward said heater; wherein said film and the recording material are separated from each other when the toner has a temperature higher than a glass transition point of the toner; and air flow means for providing an air flow passage extending from a neighborhood of said pressing rotatable member to an outside of said apparatus.
Claim 21
Dependent Claim
121 words
An image fixing apparatus, comprising: a heater which is fixed during an image fixing operation; a film slidable relative to said heater and movable together with and in cross contact with a recording material, wherein a toner image on the recording material is heated and fused by heat from said heater through said film; a pressing rotatable member for urging the recording material and said film toward said heater; wherein said film and the recording material are separated from each other when the toner has a temperature higher than a glass transition point of the toner; and air flow means for providing an air flow passage extending from a neighborhood of said pressing rotatable member to an outside of said apparatus.
Claim 22
Dependent Claim
19 words
An apparatus according to Claim 18, wherein said air flow means provides an air flow passage adjacent said film.
Claim 23
Dependent Claim
25 words
An apparatus according to Claim 18, wherein around said pressing rotatable member, air flows in the same direction as rotation of said pressing rotatable member.
Claim 24
Dependent Claim
40 words
An apparatus according to Claim 18, wherein said heater extends in a direction substantially perpendicular to a movement direction of said film, and wherein said air flow means includes a cross-flow fan extending in a longitudinal direction of said heater.
Claim 25
Dependent Claim
17 words
An apparatus according to Claim 18, wherein said film is in the form of an endless belt.
Claim 26
Dependent Claim
37 words
An apparatus according to Claim 18, wherein said heater has a heat generating resistor layer extending in a direction substantially perpendicular to a movement direction of the recording material and generating heat upon electric power supply thereto.
Claim 27
Dependent Claim
22 words
An apparatus according to Claim 23, wherein there is no air layer between said heat generating resistor layer and the visualized image.
Claim 28
Dependent Claim
127 words
An image forming apparatus, comprising: image forming means for forming a visualized image on a recording material; image fixing means for fixing the visualized image on the recording material, said image fixing means including a heater which is fixed during an image fixing operation, a film slidable relative to said heater and movable together with and in cross contact with the recording material, wherein the visualized image on the recording material is heated by heat from said heater through said film; a pressing rotatable member for urging the recording material and said film toward said heater; air flow means for providing an air flow passage from an outside of said apparatus by way of a periphery of said pressing rotatable member to an outside of said apparatus.
Claim 29
Dependent Claim
127 words
An image forming apparatus, comprising: image forming means for forming a visualized image on a recording material; image fixing means for fixing the visualized image on the recording material, said image fixing means including a heater which is fixed during an image fixing operation, a film slidable relative to said heater and movable together with and in cross contact with the recording material, wherein the visualized image on the recording material is heated by heat from said heater through said film; a pressing rotatable member for urging the recording material and said film toward said heater; air flow means for providing an air flow passage from an outside of said apparatus by way of a periphery of said pressing rotatable member to an outside of said apparatus.
Claim 30
Dependent Claim
38 words
An apparatus according to Claim 25, further comprising a guide member, having an opening, for guiding the recording material having been subjected to the image fixing apparatus, wherein the opening constitutes a part of the air flow passage.
Claim 31
Dependent Claim
25 words
An apparatus according to Claim 25, wherein the air outside said apparatus is introduced to the neighborhood of said pressing rotatable member through the opening.
Claim 32
Dependent Claim
34 words
An apparatus according to Claim 25, wherein said apparatus is provided with an opening at a position below said pressing rotatable member, and wherein the opening constitutes a part of the air flow passage.
Claim 33
Dependent Claim
25 words
An apparatus according to Claim 28, wherein the air outside the apparatus is introduced to the neighborhood of the pressing rotatable member through the opening.
Claim 34
Dependent Claim
19 words
An apparatus according to Claim 25, wherein said air flow means provides an air flow passage adjacent said film.
Claim 35
Dependent Claim
25 words
An apparatus according to Claim 25, wherein around said pressing rotatable member, air flows in the same direction as rotation of said pressing rotatable member.
Claim 36
Dependent Claim
40 words
An apparatus according to Claim 25, wherein said heater extends in a direction substantially perpendicular to a movement direction of said film, and wherein said air flow means includes a cross-flow fan extending in a longitudinal direction of said heater.
Claim 37
Dependent Claim
17 words
An apparatus according to Claim 25, wherein said film is in the form of an endless belt.
Claim 38
Dependent Claim
37 words
An apparatus according to Claim 25, wherein said heater has a heat generating resistor layer extending in a direction substantially perpendicular to a movement direction of the recording material and generating heat upon electric power supply thereto.
Claim 39
Dependent Claim
22 words
An apparatus according to Claim 34, wherein there is no air layer between said heat generating resistor layer and the visualized image.
References Cited (Backward Citations)
No citation records indexed.
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