US3910699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scan cycling mechanism for copiers
Assignee: Individual
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Filing: 1974-10-25
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Granted: 1975-10-07
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Expires: 1994-10-25
Abstract
Abstract In a scan system copy plane a photocopier, and endless cable mounted on two, spaced pulleys carrying pins, each of which engages a spring biased arm mounted on a carriage carrying lights and a first mirror. A second carriage with two mirrors is mounted through a pulley to the first carriage for parallel movement at one-half speed. Images from a copyplane are reflected through the three mirrors, then through a lens to a photosensitive surface. The pin comes around one pulley to engage the arm and remains engaged until the pin moves around the second pulley after traveling through a straight section or reach. An arm with a pin for blocking movement of the first carriage is initially positioned to hold the carriage from moving past a pre-determined starting position. During carriage scan movement the arm is rotated one and one-half times so that the pin is immediately behind the first carriage as the scan ends and controls the return movement under the drive of a return spring. In the system all movements are initiated and terminated sinusoidally.
Inventors
- 👤 Robert A Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:48
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
215 words
In an optical scan system comprising a first carriage movable across a transparent plane supporting a light source and a first mirror, a second carriage supporTing a second mirror and a third mirror, said carriages being connected to a common drive means such that said carriages move in the same direction with said first carriage moving at twice the velocity of said second carriage, a lens focused on a photoresponsive surface, said mirrors being positioned on said carriages such that images from said transparent plane are directed from said first mirror to said second mirror to said third mirror to said lens, the improvement wherein said drive means comprises a cable carrying at least one extending pin and mounted for endless movement around two, spaced pulleys to form a straight reach, and an arm pivotally connected to said first carriage and spring biased toward the incoming direction of said pin when it moves over one of said pulleys, said arm having a recess adapted to become engaged when said pin enters said recess as said pin begins to move in the direction of said reach, the cable then carrying said first carriage the length of the reach and until said pin moves out of said recess as it moves over the other of said pulleys.
Claim 2
Dependent Claim
215 words
In an optical scan system comprising a first carriage movable across a transparent plane supporting a light source and a first mirror, a second carriage supporTing a second mirror and a third mirror, said carriages being connected to a common drive means such that said carriages move in the same direction with said first carriage moving at twice the velocity of said second carriage, a lens focused on a photoresponsive surface, said mirrors being positioned on said carriages such that images from said transparent plane are directed from said first mirror to said second mirror to said third mirror to said lens, the improvement wherein said drive means comprises a cable carrying at least one extending pin and mounted for endless movement around two, spaced pulleys to form a straight reach, and an arm pivotally connected to said first carriage and spring biased toward the incoming direction of said pin when it moves over one of said pulleys, said arm having a recess adapted to become engaged when said pin enters said recess as said pin begins to move in the direction of said reach, the cable then carrying said first carriage the length of the reach and until said pin moves out of said recess as it moves over the other of said pulleys.
Claim 3
Dependent Claim
119 words
The optical system as in claim 1 wherein said carriages are spring biased to the starting position and also comprising an arm with a pin located to contact said first carriage to hold it from moving on return past a predetermined starting position, said arm being connected to drive means to rotate one and one-half times as said first carriage is moved from said starting position to the end of said movement under the drive from the said cable and being adapted when so rotated to contact said carriage with said pin and to continue said rotation with said pin in contact to control the speed of return to said starting position under the action of said spring bias.
Claim 4
Dependent Claim
31 words
The optical scan system as in claim 1 in which said cable carries at least two said pins at locations equally spaced from one another along the length of said cable.
Claim 5
Dependent Claim
31 words
The optical scan system as in claim 2 in which said cable carries at least two said pins at locations equally spaced from one another along the length of said cable.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |