US3581632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototypesetting
Assignee: TRIGGS AND GATTER Ltd
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Filing: 1968-11-14
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Granted: 1971-06-01
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Expires: 1988-11-14
Abstract
Abstract A phototypesetting machine in which letter-spacing control is effected by moving a photosensitive surface a desired distance prior to exposure of a character in response to an output from a photosensitive scanner which scans an image of a control marking for the character, and the output from the scanner controls an electromechanically operated transport mechanism for the photosensitive surface.
Inventors
- 👤 Norman John Gatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
B; B41; B41B; B41B17/00; B41B17/04; B41B17/06; B41B21/00; B41B21/32; B41B21/34; B41B21/36; B41B27/00; B41B27/28
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
161 words
An apparatus for phototypesetting comprising traversable means for scanning a projected image of a control marking associated with a character to be photocopied, and transport means responsive to the output of said traversable means for causing movement of a body having a photosensitive surface thereon, said transport means comprising electromagnetically operated clamping means, the output from the traversable means actuating a relay in an electrical circuit to open a first clamping means and close a second clamping means to the photosensitive surface adjacent the traversable means, the photosensitive surface than being moved at the same velocity as the traversable means while said traversable means scans a selected lateral width of the control marking, the first clamping means closing on the body and the second clamping means opening when the traversable means passes beyond the image of the control marking, whereby the said relay then drops out to actuate illuminating means whereby to expose the said character associated with the control marking.
Claim 2
Independent Claim
161 words
An apparatus for phototypesetting comprising traversable means for scanning a projected image of a control marking associated with a character to be photocopied, and transport means responsive to the output of said traversable means for causing movement of a body having a photosensitive surface thereon, said transport means comprising electromagnetically operated clamping means, the output from the traversable means actuating a relay in an electrical circuit to open a first clamping means and close a second clamping means to the photosensitive surface adjacent the traversable means, the photosensitive surface than being moved at the same velocity as the traversable means while said traversable means scans a selected lateral width of the control marking, the first clamping means closing on the body and the second clamping means opening when the traversable means passes beyond the image of the control marking, whereby the said relay then drops out to actuate illuminating means whereby to expose the said character associated with the control marking.
Claim 3
Dependent Claim
40 words
An apparatus according to claim 1, in which the image of the control marking comprises a rectangular area of substantially greater width than the character to be photocopied, The traversable means scanning laterally along the image of the control marking.
Claim 4
Dependent Claim
60 words
An apparatus according to claim 2, in which said traversable means scans from a point intermediate one lateral extremity of the character to be photocopied and the adjacent extremity of the control marking of said character towards which the scanning means is moving so that the distance between the character to be photocopied and an immediately preceding character is determined.
Claim 5
Dependent Claim
80 words
An apparatus according to claim 2, in which the distance between adjacent characters is adjusted by means including adjustable screen means, the screen means being initially adjusted in position over a part of the control marking which it is desired to blank off, the traversable means then first scanning under the screen and subsequently scanning the remaining portion of the control marking while being exposed to the electromagnetic radiation so that the photosensitive surface is transported the required determined distance.
Claim 6
Dependent Claim
65 words
An apparatus according to claim 1, in which the photosensitive surface is transported substantially at the same speed as the traversable means, and said traversable means is then actuated by the electromagnetic radiation when it scans a control marking to emit an output which actuates clamping means and the photosensitive surface is clamped in position so that the character to be photocopied may be exposed.
Claim 7
Dependent Claim
24 words
An apparatus according to claim 1, in which the traversable means returns to its initial position after scanning the image of the control marking.
Claim 8
Dependent Claim
57 words
An apparatus according to claim 1, in which the image of the character and the image of the control marking are projected into the same plane by said illuminating means, the characters, each with its associated control marking, being arranged sequentially on an optical font which is rotated when required so that a desired character is exposed.
Claim 9
Dependent Claim
115 words
Apparatus for phototypesetting comprising a projector unit coacting with an optical font in which each character is associated with a control marking having a width related to the desired amount of space in which the character is to be printed, transport means for moving a material having a photosensitive surface, for example, a photosensitive film or paper strip, and scanning means for scanning a control marking and for controlling said transport means whereby the transport means advances the photosensitive material a determined distance in proportion to the scanned width of the control marking before said material is exposed to said character, thus ensuring that each character is allotted a suitable space on the photosensitive material.
Claim 10
Dependent Claim
115 words
Apparatus for phototypesetting comprising a projector unit coacting with an optical font in which each character is associated with a control marking having a width related to the desired amount of space in which the character is to be printed, transport means for moving a material having a photosensitive surface, for example, a photosensitive film or paper strip, and scanning means for scanning a control marking and for controlling said transport means whereby the transport means advances the photosensitive material a determined distance in proportion to the scanned width of the control marking before said material is exposed to said character, thus ensuring that each character is allotted a suitable space on the photosensitive material.
Claim 11
Dependent Claim
46 words
Apparatus according to claim 8, in which the scanning means comprises a photosensitive cell, a reciprocable carriage having the cell mounted thereon, and an electrical circuit adapted to actuate the transport means and advance the photosensitive material in response to a signal from the scanning means.
Claim 12
Dependent Claim
96 words
Apparatus according to claim 8, in which the transport means comprises a motor, a first clamping part mounted on and rotatable with a drive shaft of the motor, the shaft being displaceable in the direction of its longitudinal axis, and a second clamping part opposed to the first clamping part such that the photosensitive film or paper passes between the first and second clamping parts, and the second clamping part is pivotable under the action of a solenoid to engage the film or paper between the clamping parts so that it is transported the required distance.
Claim 13
Dependent Claim
39 words
Apparatus according to claim 9, in which the transport means comprises a clamping means situated adjacent an edge of the carriage and adapted to grip an edge of the film or paper, which is thereby moved with the carriage.
Claim 14
Dependent Claim
130 words
Apparatus according to claim 11, in which the clamping means comprises a body portion attached to the cell carriage, a field coil in the body, a cylindrical core portion forming with the coil a solenoid, a top part of the core passing through a hole in a gripper arm which extends towards the film or paper at an angle of substantially 90* to the core portion and is pivoted at a point opposed to a gripper portion of the arm in an upstanding lug on the body portion, a compression spring normally urging the gripper portion away from the film or paper, so that when the solenoid is actuated, the pressure of the spring is overcome and the gripper arm pivots to clamp an edge of the film or paper.
Claim 15
Dependent Claim
41 words
Apparatus according to claim 12, and including a stop member mounted above the pivot of the gripper arm, the said top member obviating excessive rotation of the gripper part of the arm away from the plane of the film or paper.
Claim 16
Dependent Claim
92 words
Apparatus according to claim 9, in which the reciprocable carriage is mounted on guide wheels running on parallel guide rails attached to a frame of the apparatus, a rack extending the length of the carriage and attached to a return spring, the rack adjacent the spring seating a guide block in which is rotatably mounted a cam follower adapted to be engaged by an eccentrically mounted cam, so that on rotation of the cam the carriage is moved along the guide rails and the photocell scans the image of the control marking.
Claim 17
Dependent Claim
33 words
Apparatus according to claim 14, including an adjustable carriage stop adapted to be moved in position relative to the cam so that the position from which the carriage starts its traverse is adjustable.
Claim 18
Dependent Claim
24 words
Apparatus according to claim 8, in which the control marking has a width substantially greater than the maximum width of the character to photocopied.
Claim 19
Dependent Claim
25 words
Apparatus according to claim 8, in which the control marking has a width substantially equal to the maximum width of the character to be photocopied.
Claim 20
Dependent Claim
54 words
Apparatus according to claim 8, in which the optical font is rotatably mounted in an illuminating head adapted to project the image of the character and its control marking, the illuminating head including automatically retractable safelight shutters effective to protect the photosensitive film from exposure during scanning and transport of the film or paper.
Claim 21
Independent Claim
112 words
A method of phototypesetting, comprising the steps of providing a member having a character thereon and a control marking associated with said character, providing a material having a photosensitive surface thereon adapted to have a projected image of the character reproduced on the photosensitive surface, scanning said member and particularly the control marking thereon in a lateral direction from a selected point thereof, and moving the photosensitive material a determined distance proportional to the scanned distance of the control marking during the time interval in which the control marking is scanned, whereby a character adapted to be projected on said photosensitive material is spaced from a preceding character by said determined distance.
Claim 22
Independent Claim
112 words
A method of phototypesetting, comprising the steps of providing a member having a character thereon and a control marking associated with said character, providing a material having a photosensitive surface thereon adapted to have a projected image of the character reproduced on the photosensitive surface, scanning said member and particularly the control marking thereon in a lateral direction from a selected point thereof, and moving the photosensitive material a determined distance proportional to the scanned distance of the control marking during the time interval in which the control marking is scanned, whereby a character adapted to be projected on said photosensitive material is spaced from a preceding character by said determined distance.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |