US3705543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical recorder
Assignee: Xerox Corp
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Filing: 1970-12-28
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Granted: 1972-12-12
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Expires: 1990-12-28
Abstract
Abstract Non-impact printing or recording apparatus adapted for use with a digital computer. The apparatus is characterized by the employment of an optical character generator and timing system therefor capable of printing information on a moving photoresponsive medium. The apparatus is further characterized by the provision of a field mask disposed intermediate a lens system and the photosensitive medium which field mask prevents projection of more than one character from a column of characters.
Inventors
- 👤 James D Rees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:36
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/32; G03G15/326; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1238; G03G15/04; G03G15/041
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
241 words
Apparatus for recording alphanumeric characters, said apparatus comprising: an endless member having staggered columns of transparent characters extending about the circumference thereof, said columns being in groups of at least two columns which groups extend transversely of said endless member, each of said characters occupying a character space substantially equal to the height of a character and being spaced from adjacent characters less than one character space; first optical means for projecting, in one direction, light emanating from a plurality of directions, said optical means being disposed within said endless member, a plurality of rows of spaced-apart flash lamps, one for each group of columns, said flash lamps being disposed in rows of equally spaced lamps which rows are offset one from the other and disposed in an arc extending about said first optical means; second optical means for focusing the illumination passing through said endless member at focal point; light responsive recording structure positioned at said focal point for receiving focused images of alphanumeric characters; means for rotating said endless member at a uniform speed; means for selectively flashing said lamps in accordance with information to be recorded; means for moving said light responsive recording structure in synchronism with said endless member, and a field mask for preventing more than one character from any one column from being focused on said light responsive recording structure, said field mask being disposed between said optical means and said light responsive recording structure.
Claim 2
Dependent Claim
241 words
Apparatus for recording alphanumeric characters, said apparatus comprising: an endless member having staggered columns of transparent characters extending about the circumference thereof, said columns being in groups of at least two columns which groups extend transversely of said endless member, each of said characters occupying a character space substantially equal to the height of a character and being spaced from adjacent characters less than one character space; first optical means for projecting, in one direction, light emanating from a plurality of directions, said optical means being disposed within said endless member, a plurality of rows of spaced-apart flash lamps, one for each group of columns, said flash lamps being disposed in rows of equally spaced lamps which rows are offset one from the other and disposed in an arc extending about said first optical means; second optical means for focusing the illumination passing through said endless member at focal point; light responsive recording structure positioned at said focal point for receiving focused images of alphanumeric characters; means for rotating said endless member at a uniform speed; means for selectively flashing said lamps in accordance with information to be recorded; means for moving said light responsive recording structure in synchronism with said endless member, and a field mask for preventing more than one character from any one column from being focused on said light responsive recording structure, said field mask being disposed between said optical means and said light responsive recording structure.
Claim 3
Dependent Claim
67 words
Apparatus according to claim 1 wherein, said field masks comprises opaque portions and groups of transparent portions, said transparent portions being equal in size and being sequentially offset in the direction of movement of said recording structure a distance equal to 1/c X s where c is equal to the number of columns in one group and s is equal to the height of a character space.
Claim 4
Dependent Claim
71 words
Apparatus according to claim 2 wherein, said means for moving said light responsive recording structure comprises drive means for moving said light responsive recording structure at a speed such that it moves 1/c X s during a 1/c revolution of the endless member, where c is equal to the number of columns in one group and s is equal to the height of one character on the light responsive recording structure.
Claim 5
Dependent Claim
59 words
Apparatus according to claim 3 wherein, said light responsive recording structure comprises an electrostatic charge-retentive surface and said apparatus further comprises: means for placing a uniform charge on said surface which is dissipated in accordance with images focused thereon to thereby form an electrostatic latent image, and means for developing said latent image in order to render it visible.
Claim 6
Dependent Claim
161 words
Apparatus for recording alphanumerIc characters, said apparatus comprising: a cylindrical member having staggered columns of transparent characters extending about the circumference thereof, said columns being disposed in a plurality of groups containing at least two columns, each of said characters occupying a character space substantially equal to the height of a character and being spaced from adjacent characters less than one character space; means for selectively producing illumination along a predetermined line relative to said cylindrical member and in accordance with information to be recorded; means for projecting illumination through said cylindrical member and focusing character images on a light responsive medium; means for rotating said cylindrical member at a uniform speed; means for moving said light responsive member in synchronism with said cylindrical member; and a field mask for preventing more than one character from any one column from being focused on said light responsive medium, said field mask being disposed intermediate said cylindrical member and said light responsive member.
Claim 7
Dependent Claim
161 words
Apparatus for recording alphanumerIc characters, said apparatus comprising: a cylindrical member having staggered columns of transparent characters extending about the circumference thereof, said columns being disposed in a plurality of groups containing at least two columns, each of said characters occupying a character space substantially equal to the height of a character and being spaced from adjacent characters less than one character space; means for selectively producing illumination along a predetermined line relative to said cylindrical member and in accordance with information to be recorded; means for projecting illumination through said cylindrical member and focusing character images on a light responsive medium; means for rotating said cylindrical member at a uniform speed; means for moving said light responsive member in synchronism with said cylindrical member; and a field mask for preventing more than one character from any one column from being focused on said light responsive medium, said field mask being disposed intermediate said cylindrical member and said light responsive member.
Claim 8
Dependent Claim
75 words
Apparatus according to claim 5 wherein, said field mask comprises an opaque portion and a plurality of transparent portions, said transparent portions being equal in size and forming a stepped pattern whereby they are offset from each other a distance equal to 1/c X s where c is equal to the number of columns in said at least one group and s is equal to the height of a character on said light responsive medium.
Claim 9
Dependent Claim
42 words
Apparatus according to claim 6 wherein, said means for moving said light responsive medium comprises drive means for movement thereof at a speed such that it moves a distance equal to 1/c X s during a 1/c revolution of said endless member.
Claim 10
Dependent Claim
159 words
Alphanumeric character generating apparatus, said apparatus comprising: a cylindrical member having staggered columns of transparent characters extending about the circumference thereof, said columns being disposed in a plurality of groups containing at least two columns, each of said characters occupying a character space substantially equal to the height of a character and being spaced from adjacent characters less than one character space; means for selectively producing illumination in accordance with information to be recorded; means for projecting illumination through said cylindrical member along a predetermined line relative to said cylindrical member and focusing character images on a light responsive medium; means for rotating said cylindrical member at a uniform speed; means for moving said light responsive member in synchronism with said cylindrical member; and a field mask for preventing more than one character from any one column from being focused on said light responsive member, said field mask being disposed intermediate said endless member and said light responsive member.
Claim 11
Dependent Claim
159 words
Alphanumeric character generating apparatus, said apparatus comprising: a cylindrical member having staggered columns of transparent characters extending about the circumference thereof, said columns being disposed in a plurality of groups containing at least two columns, each of said characters occupying a character space substantially equal to the height of a character and being spaced from adjacent characters less than one character space; means for selectively producing illumination in accordance with information to be recorded; means for projecting illumination through said cylindrical member along a predetermined line relative to said cylindrical member and focusing character images on a light responsive medium; means for rotating said cylindrical member at a uniform speed; means for moving said light responsive member in synchronism with said cylindrical member; and a field mask for preventing more than one character from any one column from being focused on said light responsive member, said field mask being disposed intermediate said endless member and said light responsive member.
Claim 12
Dependent Claim
75 words
Apparatus according to claim 8 wherein, said field mask comprises an opaque portion in a plurality of transparent portions, said transparent portions being equal in size and forming a stepped pattern whereby they are offset from each other a distance equal to 1/c X s where c is equal to the number of columns in said at least one group and s is equal to the height of a character on said light responsive medium.
Claim 13
Dependent Claim
42 words
Apparatus according to claim 9 wherein, said means for moving said light responsive member comprises drive means for movement thereof at a speed such that it moves a distance equal to 1/c X s during a 1/c revolution of said endless member.
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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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |