US5089856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image transfer apparatus incorporating an internal heater
Assignee: HP Indigo BV
•
Filing: 1989-08-14
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Granted: 1992-02-18
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Expires: 2009-08-14
Abstract
Abstract An imaging system including an image bearing surface and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from the image bearing surface to the image transfer surface and for subsequent transfer to a substrate. The intermediate transfer member includes a backing layer, a compressible layer disposed between the image transfer surface and the backing layer and a heating layer which is disposed between the backing layer and the compressible layer.
Inventors
- 👤 Benzion Landa
- 👤 Hanna Pinhas
- 👤 Paul Fenster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G15/00; G03G15/14; G03G15/16; G03G15/1605; G03G15/161; G03G15/162; G03G15/1665; G03G15/167; G03G15/1675; G03G15/169; G03G5/14; G03G5/142
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
78 words
An imaging system comprising: an image bearing surface, and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from said image bearing surface to said image transfer surface and for subsequent transfer to a substrate, said intermediate transfer member also comprising: a backing layer; a compressible layer disposed intermediate said image transfer surface and said backing layer; and a heating layer disposed intermediate said backing layer and said compressible layer.
Claim 2
Dependent Claim
78 words
An imaging system comprising: an image bearing surface, and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from said image bearing surface to said image transfer surface and for subsequent transfer to a substrate, said intermediate transfer member also comprising: a backing layer; a compressible layer disposed intermediate said image transfer surface and said backing layer; and a heating layer disposed intermediate said backing layer and said compressible layer.
Claim 3
Dependent Claim
28 words
The imaging system of claim 1 wherein said transfer member also comprises a resilient layer, said heating layer being disposed intermediate said compressible layer and said resilient layer.
Claim 4
Dependent Claim
104 words
An imaging system comprising: an image bearing surface; and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from said image bearing surface to said image transfer surface and for subsequent transfer to a substrate, said intermediate transfer member also comprising: a backing layer; a conductive layer disposed intermediate said backing layer and said image transfer surface and operative to apply an electric field to said image to enhance transfer of toner images from said image bearing surface to said intermediate transfer member; and a heating layer disposed intermediate said backing layer and said transfer surface.
Claim 5
Dependent Claim
104 words
An imaging system comprising: an image bearing surface; and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from said image bearing surface to said image transfer surface and for subsequent transfer to a substrate, said intermediate transfer member also comprising: a backing layer; a conductive layer disposed intermediate said backing layer and said image transfer surface and operative to apply an electric field to said image to enhance transfer of toner images from said image bearing surface to said intermediate transfer member; and a heating layer disposed intermediate said backing layer and said transfer surface.
Claim 6
Dependent Claim
35 words
A system according to claim 1 and wherein said heating layer is operative to heat said image to a temperature sufficient to enhance transfer of toner images from said intermediate transfer member to said substrate.
Claim 7
Dependent Claim
112 words
Apparatus according to claim 1 and further comprising: means for providing first transfer engagement between said intermediate transfer member and said image bearing surface for transfer of an image from said image bearing surface to said intermediate transfer member at a first pressure; and means for providing second transfer engagement between said intermediate transfer member and said substrate for transfer of said image from said intermediate transfer member to said substrate at a second pressure, wherein said pressure is substantially constant along particular lines upon said first transfer engagement and said second transfer engagement on said intermediate transfer member, and wherein said heating layer is formed of thin wires along said lines.
Claim 8
Dependent Claim
61 words
An intermediate transfer blanket for transfer of liquid toner images from a first surface to a second surface and comprising: a transfer surface for operative engagement with said first surface and said second surface; a resilient layer; a sponge layer which is relatively softer than the resilient layer; and an area heater disposed between said sponge layer and said resilient layer.
Claim 9
Dependent Claim
61 words
An intermediate transfer blanket for transfer of liquid toner images from a first surface to a second surface and comprising: a transfer surface for operative engagement with said first surface and said second surface; a resilient layer; a sponge layer which is relatively softer than the resilient layer; and an area heater disposed between said sponge layer and said resilient layer.
Claim 10
Dependent Claim
14 words
Apparatus according to claim 1, wherein said toner image is a liquid toner image.
Claim 11
Dependent Claim
14 words
Apparatus according to claim 2, wherein said toner image is a liquid toner image.
Claim 12
Dependent Claim
14 words
Apparatus according to claim 4, wherein said toner image is a liquid toner image.
Claim 13
Dependent Claim
14 words
Apparatus according to claim 5, wherein said toner image is a liquid toner image.
Claim 14
Dependent Claim
17 words
An intermediate transfer blanket according to claim 6, wherein said toner image is a liquid toner image.
Claim 15
Dependent Claim
55 words
A system according to claim 5, wherein said heater is energized by alternating current and said thin wires are arranged in adjoining pairs, the instantaneous voltage on each wire of said pair being substantially equal and of opposite sign to that of the instantaneous voltage on the other wire with respect to a reference voltage.
Claim 16
Dependent Claim
12 words
A system according to claim 12, wherein said reference voltage is ground.
Claim 17
Dependent Claim
104 words
An imaging system comprising: a drum having an image bearing surface; and an intermediate transfer member operative for transfer of toner images from said image bearing surface to a transfer surface of said intermediate transfer member and for subsequent transfer to a substrate, said intermediate transfer member comprising: a blanket heater layer comprising a plurality of thin elongate members; means for applying a first voltage to said blanket heater to heat said blanket; and means for applying a second voltage between said blanket heater and said drum to improve transfer of said toner images from said image bearing surface to said intermediate transfer member.
Claim 18
Dependent Claim
104 words
An imaging system comprising: a drum having an image bearing surface; and an intermediate transfer member operative for transfer of toner images from said image bearing surface to a transfer surface of said intermediate transfer member and for subsequent transfer to a substrate, said intermediate transfer member comprising: a blanket heater layer comprising a plurality of thin elongate members; means for applying a first voltage to said blanket heater to heat said blanket; and means for applying a second voltage between said blanket heater and said drum to improve transfer of said toner images from said image bearing surface to said intermediate transfer member.
Claim 19
Dependent Claim
61 words
Apparatus according to claim 14, wherein said first voltage is an alternating current voltage and said thin elongate members are arranged in adjoining pairs, the instantaneous voltage on each elongate member of said pair being substantially equal and of opposite sign to that of the instantaneous voltage on the other enlongate member of the pair with respect to said second voltage.
Claim 20
Dependent Claim
21 words
Apparatus according to claim 3 and further comprising a compressible layer disposed intermediate said backing layer and said image transfer surface.
Claim 21
Dependent Claim
13 words
Apparatus according to claim 1 wherein said compressible layer is a sponge layer.
Claim 22
Dependent Claim
86 words
An imaging system comprising: an image bearing surface; and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from said image bearing surface to said image transfer surface and for subsequent transfer to a substrate, said intermediate transfer member also comprising: a backing layer; a compressible layer having a thickness less than 1 cm and disposed intermediate said image transfer surface and said backing layer; and a heating layer disposed intermediate said backing layer and said transfer surface.
Claim 23
Dependent Claim
86 words
An imaging system comprising: an image bearing surface; and an intermediate transfer member having an image transfer surface and being operative for transfer of toner images from said image bearing surface to said image transfer surface and for subsequent transfer to a substrate, said intermediate transfer member also comprising: a backing layer; a compressible layer having a thickness less than 1 cm and disposed intermediate said image transfer surface and said backing layer; and a heating layer disposed intermediate said backing layer and said transfer surface.
Claim 24
Dependent Claim
19 words
An imaging system according to claim 18 wherein said compressible layer has a thickness of less than 5 mm.
Claim 25
Dependent Claim
19 words
An imaging system according to claim 18 wherein said compressible layer has a thickness of less than 1 mm.
Claim 26
Dependent Claim
19 words
An imaging system according to claim 18 wherein said compressible layer has a thickness less than about 700 microns.
Claim 27
Dependent Claim
21 words
An imaging system according to claim 18, wherein said heating layer is disposed intermediate said compressible layer and said transfer surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |