Patent EP0453762A2 successfully refreshed from Google Patents.
EP0453762A2
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EP
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Imaging apparatus and process with intermediate transfer element
Assignee: Xerox Corp
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Filing: 1991-03-19
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Granted: —
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Expires: 2011-03-19
Abstract
Abstract Disclosed is an imaging apparatus which comprises an imaging member, a means for generating an electrostatic latent image on the imaging member, a means for developing the latent image, an intermediate transfer element having a charge relaxation time of no more than about 2 x 10<2> seconds to which the developed image can be transferred from the imaging member, and a means for transferring the developed image from the intermediate transfer element to a substrate. Also disclosed is an imaging process which comprises generating an electrostatic latent image on an imaging member, developing the latent image, transferring the developed image to an intermediate transfer element having a charge relaxation time of no more than about 2 x 10<2> seconds, which enables the transfer with very high transfer efficiency of the developed image from the intermediate transfer element to a substrate.
Inventors
- 👤 John S. Berkes
- 👤 Frank J. Bonsignore
- 👤 Joseph Mammino
- 👤 Dennis A. Abramsohn
- 👤 Donald S. Sypula
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 23:02
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/002; G03G7/0026; G03G7/0046; G03G15/00; G03G15/14; G03G15/16; G03G15/1605; G03G15/162; G03G7/004; G03G7/006; G03G7/0066; G03G7/0073; G03G7/008
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
73 words
An imaging apparatus which comprises an imaging member, a means for generating an electrostatic latent image on the imaging member, a means for developing the latent image, an intermediate transfer element having a charge relaxation time of no more than about 2 × 10² seconds to which the developed image can be transferred from the imaging member, and a means for transferring the developed image from the intermediate transfer element to a substrate.
Claim 2
Dependent Claim
31 words
An imaging apparatus according to claim 1 wherein the imaging member is photosensitive and the means for generating an electrostatic latent image exposes the imaging member to light in imagewise fashion.
Claim 3
Dependent Claim
34 words
An imaging apparatus according to claim 1 wherein the imaging member is a dielectric and the means for generating an electrostatic latent image applies a charge pattern to the imaging member in imagewise fashion.
Claim 4
Dependent Claim
19 words
An imaging apparatus according to claim 1 wherein the means for developing the latent image employs a dry developer.
Claim 5
Dependent Claim
25 words
An imaging apparatus according to claim 1 wherein the means for transferring the image from the intermediate transfer element to a substrate is a corotron.
Claim 6
Dependent Claim
27 words
An imaging apparatus according to claim 1 wherein the means for transferring the image from the intermediate transfer element to a substrate is a bias transfer roller.
Claim 7
Dependent Claim
30 words
An imaging apparatus according to claim 1 wherein the intermediate transfer element has a charge relaxation time of from about 1 × 10⁻³ seconds to about 2 × 10² seconds.
Claim 8
Dependent Claim
41 words
An imaging apparatus according to claim 1 wherein the intermediate transfer element is formulated from a material selected from the group consisting of polyvinyl fluoride, polyvinyl fluoride containing a filler material, polyvinylidene fluoride, polyvinylidene fluoride containing a filler material, and paper.
Claim 9
Dependent Claim
26 words
An imaging apparatus according to claim 8 wherein the filler material is selected from the group consisting of carbon, titanium dioxide, barium titanate, and mixtures thereof.
Claim 10
Dependent Claim
27 words
An imaging apparatus according to claim 1 wherein the intermediate transfer element is formulated from a material selected from the group consisting of metals and metal oxides.
Claim 11
Dependent Claim
45 words
An imaging apparatus according to claim 10 wherein the intermediate transfer element is formulated from a material selected from the group consisting of aluminum, copper, brass, nickel, zinc, chromium, stainless steel, semitransparent aluminum, steel, cadmium, silver, gold, indium, tin, tin oxide, and indium tin oxide.
Claim 12
Dependent Claim
43 words
An imaging apparatus according to claim 1 wherein the intermediate transfer element and the substrate are selected so that no shorting occurs between the intermediate transfer element and the substrate during transfer of the image from the intermediate transfer element to the substrate.
Claim 13
Dependent Claim
54 words
An imaging process which comprises generating an electrostatic latent image on an imaging member, developing the latent image, transferring the developed image to an intermediate transfer element having a charge relaxation time of no more than about 2 × 10² seconds, and transferring the developed image from the intermediate transfer element to a substrate.
Claim 14
Dependent Claim
31 words
An imaging process according to claim 13 wherein the imaging member is photosensitive and the means for generating an electrostatic latent image exposes the imaging member to light in imagewise fashion.
Claim 15
Dependent Claim
34 words
An imaging process according to claim 13 wherein the imaging member is a dielectric and the means for generating an electrostatic latent image applies a charge pattern to the imaging member in imagewise fashion.
Claim 16
Dependent Claim
19 words
An imaging process according to claim 13 wherein the means for developing the latent image employs a dry developer.
Claim 17
Dependent Claim
25 words
An imaging process according to claim 13 wherein the means for transferring the image from the intermediate transfer element to a substrate is a corotron.
Claim 18
Dependent Claim
27 words
An imaging process according to claim 13 wherein the means for transferring the image from the intermediate transfer element to a substrate is a bias transfer roller.
Claim 19
Dependent Claim
30 words
An imaging process according to claim 13 wherein the intermediate transfer element has a charge relaxation time of from about 1 × 10⁻³ seconds to about 2 × 10² seconds.
Claim 20
Dependent Claim
41 words
An imaging process according to claim 13 wherein the intermediate transfer element is formulated from a material selected from the group consisting of polyvinyl fluoride, polyvinyl fluoride containing a filler material, polyvinylidene fluoride, polyvinylidene fluoride containing a filler material, and paper.
Claim 21
Dependent Claim
24 words
An imaging process according to claim 20 wherein the filler material is selected from the group consisting of carbon, titanium dioxide, and barium titanate.
Claim 22
Dependent Claim
27 words
An imaging process according to claim 13 wherein the intermediate transfer element is formulated from a material selected from the group consisting of metals and metal oxides.
Claim 23
Dependent Claim
45 words
An imaging process according to claim 22 wherein the intermediate transfer element is formulated from a material selected from the group consisting of aluminum, copper, brass, nickel, zinc, chromium, stainless steel, semitransparent aluminum, steel, cadmium, silver, gold, indium, tin, tin oxide, and indium tin oxide.
Claim 24
Dependent Claim
43 words
An imaging process according to claim 13 wherein the intermediate transfer element and the substrate are selected so that no shorting occurs between the intermediate transfer element and the substrate during transfer of the image from the intermediate transfer element to the substrate.
Claim 25
Dependent Claim
27 words
An imaging process according to claim 13 wherein the developed image on the intermediate is charged to a single polarity prior to transfer to eliminate wrong-sign toner.
References Cited (Backward Citations)
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