US3761173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging system employing ions
Assignee: Horizons Research Inc
•
Filing: 1972-08-02
•
Granted: 1973-09-25
•
Expires: 1992-08-02
Abstract
Abstract In the formation of visible copies of an image, the use of an ion modulating array provided with an asymmetrical photosensitive coating together with means to electrostatically develop the ion image.
Inventors
- 👤 R Fotland
- 👤 V Straughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/05; G03G15/051; G03G15/052
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
58 words
In the formation of visible copies of an image, an apparatus for moDulating the flow of an ion beam in conformance with an optical image, which apparatus includes: an electrically conducting element having a series of ionpermable locations distributed thereover in an array, and a layer of photosensitive material on said element and asymmetrically disposed about said locations.
Claim 2
Dependent Claim
58 words
In the formation of visible copies of an image, an apparatus for moDulating the flow of an ion beam in conformance with an optical image, which apparatus includes: an electrically conducting element having a series of ionpermable locations distributed thereover in an array, and a layer of photosensitive material on said element and asymmetrically disposed about said locations.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1, wherein said array comprises a mesh screen, the openings through said screen comprising said ion-permeable locations.
Claim 4
Dependent Claim
12 words
The apparatus of claim 2, wherein said mesh is formed of wire.
Claim 5
Dependent Claim
33 words
In the apparatus of claim 1, means operatively connected to said element for moving it substantially at right angles to the direction of travel of said ion beam during operation of said apparatus.
Claim 6
Dependent Claim
34 words
In the combination of claim 1, a source of ions on one side of said element, a chargeable member on the other side thereof, and means for forming an optical image on said element.
Claim 7
Dependent Claim
21 words
The apparatus of claim 5, wherein said array comprises a mesh screen, the openings through said screen comprising said ion-permeable locations.
Claim 8
Dependent Claim
12 words
The apparatus of claim 6, wherein said mesh is formed of wire.
Claim 9
Dependent Claim
33 words
In the apparatus of claim 5, means operatively connected to said element for moving it substantially at right angles to the directions of travel of said ion beam during operation of said apparatus.
Claim 10
Dependent Claim
23 words
The combination of claim 5, in which said optical image is formed on the side of said element facing said source of ions.
Claim 11
Dependent Claim
21 words
The apparatus of claim 9, wherein said array comprises a mesh screen, the openings through said screen comprising said ion-permeable locations.
Claim 12
Dependent Claim
12 words
The apparatus of claim 10, wherein said mesh is formed of wire.
Claim 13
Dependent Claim
33 words
In the apparatus of claim 9, means operatively connected to said element for moving it substantially at right angles to the direction of travel of said ion beam during operation of said apparatus.
Claim 14
Dependent Claim
29 words
The apparatus of claim 1 including, in addition: a source of ions and an electric-field sensitive cholesteric liquid crystal film, which are positioned on opposite sides of said element.
Claim 15
Dependent Claim
26 words
The apparatus of claim 1 including, in addition: a source of ions and a deformable thermoplastic film which are positioned on opposite sides of said element.
Claim 16
Dependent Claim
28 words
The apparatus of claim 1, in which said element is a non-conductor and is provided with a conductive layer thereon in electrically conductive relation to said photosensitive layer.
Claim 17
Dependent Claim
16 words
The apparatus of claim 15, in which said element comprises an organic filament woven mesh screen.
Claim 18
Dependent Claim
35 words
The apparatus of claim 15, in which said conductive layer is on one side of said element and said photosensitive layer is on the other side thereof, said layers making electrical connection with one another.
Claim 19
Dependent Claim
49 words
The apparatus of claim 1, wherein said element comprises a plurality of strands arranged to define a plurality of openings between strands, said photosensitive layer being on said strands and having substantially a crescent shape when viewed in a cross section taken perpendicular to the axis of said strands.
Claim 20
Dependent Claim
38 words
The apparatus of claim 18, in which said photosensitive layer is disposed of a sector of the periphery of said strands which is circumferentially offset from the top-to-bottom direction of said element by between about 15* and 75*.
Claim 21
Dependent Claim
12 words
The apparatus of claim 19, in which said angle is about 45*.
Claim 22
Dependent Claim
28 words
A screen comprising a plurality of strands arranged to define a plurality of openings between strands, and a photosensitive layer on said strands arranged asymmetrically around said openings.
Claim 23
Dependent Claim
28 words
A screen comprising a plurality of strands arranged to define a plurality of openings between strands, and a photosensitive layer on said strands arranged asymmetrically around said openings.
Claim 24
Dependent Claim
32 words
The screen of claim 21, wherein the photosensitive layer on the strands, when viewed in a section taken as a plane perpendicular to the axis of each strand, is a crescent shape.
Claim 25
Dependent Claim
38 words
The screen of claim 22, in which said photosensitive layer is disposed on a sector of the periphery of said strands which is circumferentially offset from the top-to-bottom direction of said screen by between about 15* And 75*.
Claim 26
Dependent Claim
12 words
The screen of claim 23, in which said angle is about 45*.
Claim 27
Dependent Claim
17 words
The screen of claim 21, wherein said screen is a woven screen and said strands are metallic.
Claim 28
Dependent Claim
51 words
The screen of claim 21, wherein said strands are nonmetallic and said strands are coated on a first portion of their outer surface with a layer of photosensitive material and on a second portion of their outer surface with an electrically conductive layer, said layers making electrical connection with one another.
Claim 29
Independent Claim
87 words
The method of fabricating a screen to modulate its ions discharged from a corona source and passing to an image receptor member in a copying apparatus, which comprises: providing a flow of photosensitive material moving along a path having a given direction; positioning in said path a screen comprising an element having a series of recesses distributed over a face thereof, and orienting said screen in said path so that the plane of said recesses makes an angle with said given direction between about 15* and 75*.
Claim 30
Independent Claim
87 words
The method of fabricating a screen to modulate its ions discharged from a corona source and passing to an image receptor member in a copying apparatus, which comprises: providing a flow of photosensitive material moving along a path having a given direction; positioning in said path a screen comprising an element having a series of recesses distributed over a face thereof, and orienting said screen in said path so that the plane of said recesses makes an angle with said given direction between about 15* and 75*.
Claim 31
Dependent Claim
12 words
The method of claim 27, in which said angle is about 45*.
Claim 32
Dependent Claim
12 words
The apparatus of claim 1 wherein said element is an apertured plate.
Claim 33
Dependent Claim
27 words
The apparatus of claim 2 including means to supply fresh screen within an exposure region in order to provide for continued and repetitive operation of said apparatus.
Claim 34
Dependent Claim
39 words
The apparatus of claim 1 including, in addition, an image receptor surface, means to develop a visible image on said surface and means to transfer the visible image developed on said image receptor surface onto a permanent record member.
Claim 35
Dependent Claim
30 words
The apparatus of claim 6 including, in addition, a second screen positioned very closely adjacent to the chargeable member, and means to maintain said second screen at a suitable potential.
Claim 36
Dependent Claim
18 words
The apparatus of claim 31 wherein said chargeable member is a conductive drum coated with an insulating layer.
Claim 37
Dependent Claim
12 words
The apparatus of claim 1 wherein said array is and endless belt.
Claim 38
Dependent Claim
29 words
The apparatus of claim 1 wherein the electrically conducting element is comprised of a grid of parallel electrically conductive strands and alternate strands are coated with a photosensitive layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |