US5285244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic color printing system utilizing an image transfer belt
Assignee: Olin Hunt Specialty Products Inc
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Filing: 1991-11-04
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Granted: 1994-02-08
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Expires: 2011-11-04
Abstract
Abstract An improved color printing method and the apparatus for employing the method are provided for continuously superimposing a plurality of separate color toner images onto a common conductive intermediate transfer belt from a plurality of developing drums across a liquid filled gap to form a single full color image. The separate colors have masters mounted to the developing drums and the superimposed full color image is contact transferred with the aid of heat and pressure from the conductive intermediate transfer belt to the final receiving paper substrate after all of the liquid has been removed from the superimposed full color image.
Inventors
- 👤 David P. Bujese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0178; G03G15/0194
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
155 words
An apparatus for printing a full color image onto a receiving substrate comprising: means for forming a plurality of separate liquid toner color images including nonpolar insulating solvent which when combined in superimposed relationship will provide said full color image; a conductive intermediate transfer surface arranged for movement in a desired direction about a predetermined path within said apparatus; means for transferring to said intermediate transfer surface said plurality of separate liquid toner color images in superimposed fashion to form said full color image; progressive heating means spaced from said intermediate transfer surface, said heating means being arranged progressively closer to said intermediate transfer surface in said direction of movement, said heating means providing progressive ramping up of the heat, in said direction of moment, to progressively and gradually extract said nonpolar insulating solvent from the superimposed toner images; and means arranged following said heating means for transferring said color image to a receiving surface.
Claim 2
Independent Claim
155 words
An apparatus for printing a full color image onto a receiving substrate comprising: means for forming a plurality of separate liquid toner color images including nonpolar insulating solvent which when combined in superimposed relationship will provide said full color image; a conductive intermediate transfer surface arranged for movement in a desired direction about a predetermined path within said apparatus; means for transferring to said intermediate transfer surface said plurality of separate liquid toner color images in superimposed fashion to form said full color image; progressive heating means spaced from said intermediate transfer surface, said heating means being arranged progressively closer to said intermediate transfer surface in said direction of movement, said heating means providing progressive ramping up of the heat, in said direction of moment, to progressively and gradually extract said nonpolar insulating solvent from the superimposed toner images; and means arranged following said heating means for transferring said color image to a receiving surface.
Claim 3
Dependent Claim
20 words
An apparatus as in claim 1 wherein said heating means is adapted to dry and partially fuse said color image.
Claim 4
Dependent Claim
19 words
An apparatus as in claim 2 further comprising means for fusing the full color image to the receiving surface.
Claim 5
Dependent Claim
50 words
An apparatus as in claim 3 wherein said means for forming said superimposed liquid color toner images comprises an electrostatically imageable surface for each of said plurality of colors; and a corresponding plurality of developing stations for forming each of said liquid color toner images on said electrostatically imageable surface.
Claim 6
Dependent Claim
14 words
An apparatus as in claim 4 wherein said electrostatically imageable surface comprises a photoreceptor.
Claim 7
Dependent Claim
21 words
An apparatus as in claim 5 wherein said electrostatically imageable surface comprises a photopolymer which is imaged to create a master.
References Cited (Backward Citations)
US3506804A
Cited
US3591276A
Cited
US3893761A
Cited
US3923392A
Cited
US4095886A
Cited
US4336279A
Cited
US4278345A
Cited
US4485565A
Cited
US4879184A
Cited
US4604424A
Cited
US4733272A
Cited
US4731636A
Cited
US4796048A
Cited
US4999927A
Cited
US4987455A
Cited
US4990969A
Cited
US5162179A
Cited
US5158846A
Cited
US5150161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |