US3833296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical scanning system for photocopying
Assignee: Canon Production Printing Holding BV
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Filing: 1972-11-08
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Granted: 1974-09-03
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Expires: 1992-11-08
Abstract
Abstract An electrophotographic copying apparatus having a movable mirror system for stripwise scanning an original laid on a support and directing the resulting light image stripwise via a stationary objective to a moving light sensitive medium is provided with a stationary slit located to a side of said support for exposure of a sheet-shaped original moved over the slit and with means including at least one mirror of the movable mirror system for stripwise projecting the light image from an original at the slit via said objective to the imaging medium. A single objective and imaging system thus serve for copying either sheet-shaped originals passed over the exposure slit or originals of various forms, including books, laid on said support.
Inventors
- 👤 M Vola
- 👤 W Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:42
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
In a photocopying apparatus comprising a support upon which an original may be laid for exposure, a moving light-sensitive medium and an optical system including a stationary objective for transmitting light into a path to said medium and means including a mirror system movable from one end position to another relative to said support for stripwise scanning an original laid on said support and projecting the resulting light image through said objective into said path, the improvement wherein said apparatus further comprises a stationary exposure slit located to a side of said support, means for transporting a sheet-shaped original over said slit, and means including at least one mirror of said mirror system operative in a certain posture thereof for projecting stripwise through said objective into said path the light image resulting from exposure of an original moving over said slit.
Claim 2
Dependent Claim
141 words
In a photocopying apparatus comprising a support upon which an original may be laid for exposure, a moving light-sensitive medium and an optical system including a stationary objective for transmitting light into a path to said medium and means including a mirror system movable from one end position to another relative to said support for stripwise scanning an original laid on said support and projecting the resulting light image through said objective into said path, the improvement wherein said apparatus further comprises a stationary exposure slit located to a side of said support, means for transporting a sheet-shaped original over said slit, and means including at least one mirror of said mirror system operative in a certain posture thereof for projecting stripwise through said objective into said path the light image resulting from exposure of an original moving over said slit.
Claim 3
Dependent Claim
52 words
Photocopying apparatus according to claim 1, said at least one mirror being displaceable from a normal position thereof in which the same directs to said objective light from an original on said support to another position thereof in which it guides to said objective light from an original at said exposure slit.
Claim 4
Dependent Claim
28 words
Photocopying apparatus according to claim 1, said mirror system in said certain posture thereof being disposed outside the scanning path which it follows between the said end positions.
Claim 5
Dependent Claim
31 words
Photocopying apparatus according to claim 1, wherein said support is substantially horizontal and said exposure slit and said transporting means are disposed substantially horizontally adjacent to a side of said support.
Claim 6
Dependent Claim
46 words
Photocopying apparatus according to claim 1, said movable mirror system comprising at least two mirrors ahead of said objective, the second of which viewed in the direction of travel of light from said support to said objective, is displaceable from normal position into the said posture.
Claim 7
Dependent Claim
128 words
Photocopying apparatus according to claim 1, said movable mirror system including two mutually perpendicular mirrors and means acting during movement of said mirror system between the said end portions to move said two mirrors as a unit in a path inclined to the plane of said support with each of said two mirrors disposed at an angle Of 45* to said inclined path, the one of said two mirrors first struck by light from an original on said support being displaceable out of active position when said mirror system is at a certain location to a posture thereof such that the other of said two mirrors will then direct light from an original at said slit into said objective and thence into the path to said light-sensitive medium.
Claim 8
Dependent Claim
95 words
Photocopying apparatus according to claim 6, said movable mirror system comprising three mirrors, the first of which is moved along said inclined path with but at a speed greater than that of said two mirrors, said exposure slit being mounted at a distance horizontally away from a side of said support, and there being two fixed mirrors for directing light from an original at said slit to said other of said two mirrors when said mirror system is at said certain location and said one of said two mirrors is displaced out of active position.
References Cited (Backward Citations)
US3609024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |