EP0424053A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Mold releasing elastic roller
Assignee: Canon Inc
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Filing: 1990-10-15
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Granted: —
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Expires: 2010-10-15
Abstract
Abstract The present invention provides a mold releasing elastic roller comprising an insulating elastic layer; an insulating and mold releasing surfacial layer formed on said elastic layer; and a primer layer for adhering said elastic layer and said mold releasing surfacial layer, said primer layer containing a material of low resistance.
Inventors
- 👤 Noboru Mizunuma
- 👤 Haruo Naruse
- 👤 Ikuyo Kawakami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:12
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; G03G15/206; H; H10; H10W; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
46 words
A mold releasing elastic roller comprising: an insulating elastic layer; an insulating and mold releasing surfacial layer formed on said elastic layer; and a primer layer for adhering said elastic layer and said mold releasing surfacial layer, said primer layer containing a material of low resistance.
Claim 2
Dependent Claim
46 words
A mold releasing elastic roller comprising: an insulating elastic layer; an insulating and mold releasing surfacial layer formed on said elastic layer; and a primer layer for adhering said elastic layer and said mold releasing surfacial layer, said primer layer containing a material of low resistance.
Claim 3
Dependent Claim
21 words
A roller according to claim 1, wherein said primer layer has a volume resistivity equal to or lower than 10³ Ω·cm.
Claim 4
Dependent Claim
21 words
A roller according to claim 2, wherein said primer layer has a volume resistivity equal to or lower than 10 Ω·cm.
Claim 5
Dependent Claim
25 words
A roller according to claim 1, wherein said elastic layer is composed of silicone rubber and said releasing surfacial layer is composed of fluorinated resin.
Claim 6
Dependent Claim
12 words
A roller according to claim 4, wherein said fluorinated resin is PFA.
Claim 7
Dependent Claim
17 words
A roller according to claim 1, wherein said elastic layer is provided on a roller core member.
Claim 8
Dependent Claim
72 words
A fixing device comprising first and second rollers maintained in mutual pressure contact and adapted to transport a member bearing an unfixed image thereon for fixing said image; said first roller comprises: an insulating elastic layer; an insulating and mold releasing surfacial layer provided on said elastic layer; and a primer layer for adhering said elastic layer and said mold releasing surfacial layer, said primer layer containing a material of low resistance.
Claim 9
Dependent Claim
72 words
A fixing device comprising first and second rollers maintained in mutual pressure contact and adapted to transport a member bearing an unfixed image thereon for fixing said image; said first roller comprises: an insulating elastic layer; an insulating and mold releasing surfacial layer provided on said elastic layer; and a primer layer for adhering said elastic layer and said mold releasing surfacial layer, said primer layer containing a material of low resistance.
Claim 10
Dependent Claim
25 words
A fixing device according to claim 7, wherein said second roller is heated by a heat source and comes into contact with said unfixed image.
Claim 11
Dependent Claim
22 words
A fixing device according to claim 8, wherein the hardness of said second roller is higher than that of said first roller.
Claim 12
Dependent Claim
22 words
A fixing device according to claim 7, wherein said primer layer has a volume resistivity equal to or lower than 10³ Ω·cm.
Claim 13
Dependent Claim
22 words
A fixing device according to claim 10, wherein said primer layer has a volume resistivity equal to or lower than 10 Ω·cm.
Claim 14
Dependent Claim
27 words
A fixing device according to claim 7, wherein said elastic layer is composed of silicone rubber and said mold releasing surfacial layer is composed of fluorinated resin.
Claim 15
Dependent Claim
13 words
A fixing device according to claim 12, wherein said fluorinated resin is PFA.
Claim 16
Dependent Claim
93 words
A fixing device comprising first and second rollers maintained in mutual pressure contact and adapted to transport a member bearing an unfixed image thereon, with said unfixed image positioned to face said second roller for fixing said image: wherein said first roller comprises: an insulating and mold releasing surfacial layer; a conductive core member; and a low resistance layer containing a material of low resistance and provided between said core member and mold releasing surfacial layer; and wherein said second roller comprises a mold releasing surfacial layer containing a material of low resistance.
Claim 17
Dependent Claim
93 words
A fixing device comprising first and second rollers maintained in mutual pressure contact and adapted to transport a member bearing an unfixed image thereon, with said unfixed image positioned to face said second roller for fixing said image: wherein said first roller comprises: an insulating and mold releasing surfacial layer; a conductive core member; and a low resistance layer containing a material of low resistance and provided between said core member and mold releasing surfacial layer; and wherein said second roller comprises a mold releasing surfacial layer containing a material of low resistance.
Claim 18
Dependent Claim
46 words
A fixing device according to claim 14, wherein said first roller comprises a mold releasing surfacial layer, a metal core member and an insulating elastic layer, wherein said low resistance layer is a primer layer for adhering said mold releasing surfacial layer to said elastic layer.
Claim 19
Dependent Claim
22 words
A fixing device according to claim 15, wherein said primer layer has a volume resistivity equal to or lower than 10³ Ω·cm.
Claim 20
Dependent Claim
22 words
A fixing device according to claim 16, wherein said primer layer has a volume resistivity equal to or lower than 10 Ω·cm.
Claim 21
Dependent Claim
26 words
A fixing device according to claim 15, wherein said elastic layer is composed of silicone rubber and said releasing surfacial layer is composed of fluorinated resin.
Claim 22
Dependent Claim
33 words
A fixing device according to claim 14, wherein said low resistance layer is an elastic layer containing a material of low resistance and provided between said releasing surfacial layer and said core member.
Claim 23
Dependent Claim
22 words
A fixing device according to claim 19, wherein said elastic layer has a volume resistivity equal to or lower than 10⁶ Ω·cm.
Claim 24
Dependent Claim
28 words
A fixing device according to claim 14, wherein said releasing surfacial layer of said second roller has a volume resistivity in a range from 10⁷ to 10¹¹ Ω·cm.
Claim 25
Dependent Claim
92 words
A fixing device comprising first and second rollers maintained in mutual pressure contact and adapted to transport a member bearing an unfixed image thereon, with said unfixed image positioned to face said second roller, thereby fixing said image; wherein said first roller comprises: an insulating and mold releasing surfacial layers; a conductive core member; and a low resistance layer containing a material of low resistance and provided between said core member and mold releasing surfacial layer; and wherein said second roller comprises a mold releasing surfacial layer composed of pure tetrafluoroethylenealkylvinylether copolymer.
Claim 26
Dependent Claim
92 words
A fixing device comprising first and second rollers maintained in mutual pressure contact and adapted to transport a member bearing an unfixed image thereon, with said unfixed image positioned to face said second roller, thereby fixing said image; wherein said first roller comprises: an insulating and mold releasing surfacial layers; a conductive core member; and a low resistance layer containing a material of low resistance and provided between said core member and mold releasing surfacial layer; and wherein said second roller comprises a mold releasing surfacial layer composed of pure tetrafluoroethylenealkylvinylether copolymer.
Claim 27
Dependent Claim
25 words
A fixing device according to claim 22, wherein said second roller is heated by a heat source and comes into contact with said unfixed image.
Claim 28
Dependent Claim
22 words
A fixing device according to claim 23, wherein the hardness of said second roller is higher than that of said first roller.
Claim 29
Dependent Claim
46 words
A fixing device according to claim 22, wherein said first roller comprises a mold releasing surfacial layer, a metal core member and an insulating elastic layer, wherein said low resistance layer is a primer layer for adhering said mold releasing surfacial layer to said elastic layer.
Claim 30
Dependent Claim
22 words
A fixing device according to claim 25, wherein said primer layer has a volume resistivity equal to or lower than 10³ Ω·cm.
Claim 31
Dependent Claim
22 words
A fixing device according to claim 26, wherein said primer layer has a volume resistivity equal to or lower than 10 Ω·cm.
Claim 32
Dependent Claim
27 words
A fixing device according to claim 25, wherein said elastic layer is composed of silicone rubber and said mold releasing surfacial layer is composed of fluorinated resin.
Claim 33
Dependent Claim
34 words
A fixing device according to claim 22, wherein said low resistance layer is an elastic layer containing a material of low resistance and provided between said mold releasing surfacial layer and said core member.
Claim 34
Dependent Claim
22 words
A fixing device according to claim 29, wherein said elastic layer has a volume resistivity equal to or lower than 10⁶ Ω·cm.
Claim 35
Dependent Claim
36 words
A roller for an electrostatic image printer, the roller comprising an insulating and mold releasing surface layer, and an intermediate layer of a material having electrical properties suitable to reduce the cross-sectional capacitance of the roller.
Claim 36
Dependent Claim
36 words
A roller for an electrostatic image printer, the roller comprising an insulating and mold releasing surface layer, and an intermediate layer of a material having electrical properties suitable to reduce the cross-sectional capacitance of the roller.
Claim 37
Dependent Claim
26 words
A roller for electrostatic image printing comprising an outer surface layer of substantially pure fluorinated polymeric material, and means for limiting the capacitance of the roller.
Claim 38
Dependent Claim
26 words
A roller for electrostatic image printing comprising an outer surface layer of substantially pure fluorinated polymeric material, and means for limiting the capacitance of the roller.
Claim 39
Dependent Claim
34 words
A roller for image printing comprising a surface layer and an inner layer, and a primer layer adhering the surface layer to the inner layer, characterised in that the primer layer is electrically conductive.
Claim 40
Dependent Claim
34 words
A roller for image printing comprising a surface layer and an inner layer, and a primer layer adhering the surface layer to the inner layer, characterised in that the primer layer is electrically conductive.
Claim 41
Dependent Claim
19 words
A roller including two layers of adherent primer, one layer being electrically conductive and the other being electrically insulating.
Claim 42
Dependent Claim
19 words
A roller including two layers of adherent primer, one layer being electrically conductive and the other being electrically insulating.
Claim 43
Dependent Claim
39 words
An image printer comprising a fixing roller and a pressure roller, in which the pressure roller is not charged and the fixing roller is charged with a bias voltage of a polarity the same as that of the toner.
Claim 44
Dependent Claim
39 words
An image printer comprising a fixing roller and a pressure roller, in which the pressure roller is not charged and the fixing roller is charged with a bias voltage of a polarity the same as that of the toner.
Claim 45
Dependent Claim
35 words
A fixing roller for an image printer including an outer surface comprising a matrix of halogenated polymeric material, and, dispersed therein, particles of conductive material, such that the surface has an intermediate level of conductivity.
Claim 46
Dependent Claim
35 words
A fixing roller for an image printer including an outer surface comprising a matrix of halogenated polymeric material, and, dispersed therein, particles of conductive material, such that the surface has an intermediate level of conductivity.
References Cited (Backward Citations)
No citation records indexed.
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