US4082549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agglomeration imaging process
Assignee: Xerox Corp
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Filing: 1972-10-27
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Granted: 1978-04-04
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Expires: 1992-10-27
Abstract
Abstract An imaging member comprising an agglomerable layer on and not embedded in a substrate is agglomerated in image configuration to cause relative transparentizing or a color change and the formation of larger agglomerates in the agglomerated areas. This imaging process is followed by removal of the agglomerates from the agglomerated areas.
Inventors
- 👤 Werner E. L. Haas
- 👤 James E. Adams
- 👤 Bela Mechlowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705; G03C5/00; G03C5/56
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
146 words
An imaging method comprising: (a) providing on a substrate an about 0.05 to about 5 micron thick microscopically discontinuous layer of particles having an average diameter of about 0.5 to about 5 microns and center to center particle spacings of up to about 5 microns; said particles comprising material selected from the group consisting of amorphous selenium, amorphous selenium alloys, tellurium, mixtures of amorphous selenium and crystalline selenium, arsenic, zinc, sulfur, dyed polyvinyl carbazole, gallium, cobalt tricarbonyl, thermoplastics, dyed thermoplastics, dyed waxes and dyed paraffins; (b) imagewise exposing said discontinuous layer to radiation of about 2,000 to about 26,000 A in wavelength and at an energy of about 0.001 to about 0.3 joules/cm 2 for about 1 to about 10 4 microseconds wherein the total cross-sectional area of particles in imagewise exposed areas is decreased; and (c) removing particles from said substrate in imagewise exposed areas.
Claim 2
Dependent Claim
146 words
An imaging method comprising: (a) providing on a substrate an about 0.05 to about 5 micron thick microscopically discontinuous layer of particles having an average diameter of about 0.5 to about 5 microns and center to center particle spacings of up to about 5 microns; said particles comprising material selected from the group consisting of amorphous selenium, amorphous selenium alloys, tellurium, mixtures of amorphous selenium and crystalline selenium, arsenic, zinc, sulfur, dyed polyvinyl carbazole, gallium, cobalt tricarbonyl, thermoplastics, dyed thermoplastics, dyed waxes and dyed paraffins; (b) imagewise exposing said discontinuous layer to radiation of about 2,000 to about 26,000 A in wavelength and at an energy of about 0.001 to about 0.3 joules/cm 2 for about 1 to about 10 4 microseconds wherein the total cross-sectional area of particles in imagewise exposed areas is decreased; and (c) removing particles from said substrate in imagewise exposed areas.
Claim 3
Dependent Claim
60 words
The imaging method of claim 1 wherein the particles in the imagewise exposed areas are removed by applying a removing force to an entire surface of the layer of particles, the force being sufficient to remove the particles in exposed areas and insufficient to remove particles in non-imagewise exposed areas, wherein an imaged member of higher contrast density is produced.
Claim 4
Dependent Claim
26 words
The imaging method of claim 2 wherein said removing force is applied by steps comprising causing relative movement between the layer of particles and a fluid.
Claim 5
Dependent Claim
21 words
The imaging method of claim 1 wherein said layer comprises particles having average particle size not greater than about 1 micron.
Claim 6
Dependent Claim
12 words
The imaging method of claim 1 wherein said layer particles comprise selenium.
Claim 7
Dependent Claim
14 words
The imaging method of claim 5 wherein said layer particles comprise predominantly amorphous selenium.
Claim 8
Dependent Claim
12 words
The imaging method of claim 3 wherein said fluid is a liquid.
Claim 9
Dependent Claim
21 words
The imaging method of claim 4 wherein said layer comprises particles having average particle size not greater than about 0.5 microns.
Claim 10
Dependent Claim
21 words
The imaging method of claim 8 wherein said particles have center to center particle spacings not greater than about 1/2 micron.
Claim 11
Dependent Claim
18 words
The imaging method of claim 1 wherein the source of said radiation is a Xenon gas discharge lamp.
Claim 12
Dependent Claim
15 words
The imaging method of claim 1 wherein the source of said radiation is a laser.
Claim 13
Dependent Claim
58 words
An imaging method comprising: (a) providing on a substrate, an agglomerable layer; (b) imagewise exposing said agglomerable layer to radiation at an energy level and for a period of time effective to decrease the total cross-sectional area of agglomerable material in said agglomerable layer in imagewise exposed areas; and (c) removing imagewise exposed agglomerable material from said substrate.
Claim 14
Dependent Claim
58 words
An imaging method comprising: (a) providing on a substrate, an agglomerable layer; (b) imagewise exposing said agglomerable layer to radiation at an energy level and for a period of time effective to decrease the total cross-sectional area of agglomerable material in said agglomerable layer in imagewise exposed areas; and (c) removing imagewise exposed agglomerable material from said substrate.
Claim 15
Dependent Claim
58 words
The imaging method of claim 12 wherein the imagewise exposed agglomerable material is removed by applying a removing force to an entire surface of the agglomerable layer, the force being sufficient to remove agglomerable material in exposed areas and insufficient to remove agglomerable material in non-imagewise exposed areas, wherein an imaged member of higher contrast density is produced.
Claim 16
Dependent Claim
25 words
The imaging method of claim 13 wherein said removing force is applied by steps comprising causing relative movement between the agglomerable layer and a fluid.
Claim 17
Dependent Claim
26 words
The imaging method of claim 12 wherein said agglomerable layer comprises particles of agglomerable material having an average particle size not greater than about 1 micron.
Claim 18
Dependent Claim
13 words
The imaging method of claim 15 wherein said agglomerable material particles comprise selenium.
Claim 19
Dependent Claim
15 words
The imaging method of claim 16 wherein said agglomerable material particles comprise predominantly amorphous selenium.
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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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |