US3794756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coupling photographic parameters into a mechanism for the production of photographic color separations
Assignee: Printing Developments Inc
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Filing: 1971-09-14
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Granted: 1974-02-26
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Expires: 1991-09-14
Abstract
Abstract An electro-mechanical photographic color separation system having manually adjustable enlargement ratio controls and cropping controls, whereby color separations of an original can be formed having a different size and shape with respect to the original. Enlargement or reduction is accomplished by varying the scanning speed of the X-sweep and Y-sweep of a cathode ray beam scanner relative to an output film drum. Cropping is achieved by blanking the cathode ray beam scanner when the beam scanner attempts to scan outside a predetermined area defined by manually adjustable cropping controls.
Inventors
- 👤 A Hahn
- 👤 H Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/387; H04N1/3872; H04N1/3873; H04N1/3875; H04N1/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
221 words
In a photographic color separation system having a projection device for forming a projected image of an original transparency, a cathode ray tube with horizontal and vertical deflection means for beam scanning the original transparency in response to horizontal and vertical deflection signals generated by predetermined horizontal and vertical movement of an output recorder across the face of and in a plane parallel to one or more output color separations of said original transparency, the improvement comprising an adjustable enlargement ratio control means for linearly varying the magnitude of said horizontal and vertical deflection signals to provide an enlargement ratio of the output separations to the original transparency, a horizontal cropping means movable vertically across the face of the projected image of the original transparency and a vertical cropping means movable horizontally across the face of the projected image of the original transparency for defining the area of the original transparency to be scanned by the cathode ray tube, adjustable horizontal and vertical crop controls responsive to the positions of the horizontal and vertical cropping means respectively on the face of the projected imAge for programming into the system predetermined horizontal and vertical cropping limits, and blanking means for disabling the scanning beam when the area being scanned is outside a predetermined area defined by the horizontal and vertical cropping limits.
Claim 2
Dependent Claim
221 words
In a photographic color separation system having a projection device for forming a projected image of an original transparency, a cathode ray tube with horizontal and vertical deflection means for beam scanning the original transparency in response to horizontal and vertical deflection signals generated by predetermined horizontal and vertical movement of an output recorder across the face of and in a plane parallel to one or more output color separations of said original transparency, the improvement comprising an adjustable enlargement ratio control means for linearly varying the magnitude of said horizontal and vertical deflection signals to provide an enlargement ratio of the output separations to the original transparency, a horizontal cropping means movable vertically across the face of the projected image of the original transparency and a vertical cropping means movable horizontally across the face of the projected image of the original transparency for defining the area of the original transparency to be scanned by the cathode ray tube, adjustable horizontal and vertical crop controls responsive to the positions of the horizontal and vertical cropping means respectively on the face of the projected imAge for programming into the system predetermined horizontal and vertical cropping limits, and blanking means for disabling the scanning beam when the area being scanned is outside a predetermined area defined by the horizontal and vertical cropping limits.
Claim 3
Dependent Claim
66 words
The system as in claim 1 wherein the projecting device is a photographic enlarger and the system further includes a drive means for moving the cathode ray tube in a direction perpendicular to the plane of the projected image to a predetermined position, the enlargement ratio control varies the enlargement ratio in accordance with the vertical distance between the cathode ray tube and the projected image.
Claim 4
Dependent Claim
191 words
The system as in claim 2 wherein the vertical deflection means is responsive to a predetermined voltage appearing on a wiper of a linear potentiometer, the wiper means of the linear potentiometer movable in response to the longitudinal movements of the recorder across the face of the output separations, the horizontal deflection means is responsive to a predetermined voltage provided by a rotary shaft encoder, responsive to the rotational movements of the recorder across the face of the output separations, the enlargement ratio control means includes a linear potentiometer having a wiper means for providing a predetermined voltage, the wiper means of the enlargement ratio control means movable in response to the movements of the cathode ray tube in a direction perpendicular to the plane of the projected image, further including a first and second amplifier means for amplifying respectively the horizontal and vertical deflection signals before said signals reach the corresponding deflection means of the cathode ray tube, and a means for varying the amplification factor of the first and second amplifier means in accordance with the voltage signal appearing on the wiper means of the enlargement ratio control means.
Claim 5
Dependent Claim
185 words
The system as in claim 3 wherein horizontal and vertical crop controls each comprising a first potentiometer having a wiper means for providing a voltage signal corresponding to a predetermined minimum and a second potentiometer having a wiper means for providing a voltage signal corresponding to a predetermined maximum, the vertical cropping means comprises a left-hand and a right-hand cropping means and the horizontal cropping means comprises a top and bottom cropping means, the wipers of the first and second potentiometers of the horizontal crop controls movable in response to the left-hand and right-hand cropping means, the wipers of the first and second potentiometers of the vertical crop controls movable in response to the top and bottom cropping means, the blanking means includes means for selectively activating the blanking means when the amplified horizontal deflection signal is less than the predetermined minimum signal or greater than the predetermined maximum signal as provided by the horizontal crop controls or when the amplified vertical deflection signal is less than the predetermined minimum signal or greater than the predetermined maximum signal as provided by the vertical crop controls.
Claim 6
Dependent Claim
191 words
In a photographic copying system including a projection device for forming a projected image of an original transparency, a cathode ray tube means for generating a polychromatic scanning beam, blanking means for selectively blanking the beam, horizontal and vertical deflection means for directing the scanning beam to a spot on the original transparency which modulates the scanning beam, an output film, a recorder means for accepting the modulated beam and recording the modulated beam on the output film, means for producing relative horizontal and vertical movement between the recorder and the output film in a plane parallel to that of the output film, slave means for slaving the horizontal and vertical deflection means to the corresponding relative movements of the recorder and output film, the improvement comprising drive means for moving the cathode ray tube in a direction perpendicular tO the plane of the projected image to a predetermined position and an enlargement ratio control means for varying the ratio of the horizontal and vertical deflections to the corresponding relative movements of the recorder and output film in accordance with the distance between the cathode ray tube and the projected image.
Claim 7
Dependent Claim
191 words
In a photographic copying system including a projection device for forming a projected image of an original transparency, a cathode ray tube means for generating a polychromatic scanning beam, blanking means for selectively blanking the beam, horizontal and vertical deflection means for directing the scanning beam to a spot on the original transparency which modulates the scanning beam, an output film, a recorder means for accepting the modulated beam and recording the modulated beam on the output film, means for producing relative horizontal and vertical movement between the recorder and the output film in a plane parallel to that of the output film, slave means for slaving the horizontal and vertical deflection means to the corresponding relative movements of the recorder and output film, the improvement comprising drive means for moving the cathode ray tube in a direction perpendicular tO the plane of the projected image to a predetermined position and an enlargement ratio control means for varying the ratio of the horizontal and vertical deflections to the corresponding relative movements of the recorder and output film in accordance with the distance between the cathode ray tube and the projected image.
Claim 8
Dependent Claim
112 words
The system as in claim 5 further including a horizontal cropping means movable vertically across the face of the projected image and a vertical cropping means movable horizontally across the face of the projected image for defining the area of the projected image to be scanned by the cathode ray tube, adjustable horizontal and vertical cropping control means, responsive to the positions of the horizontal and vertical cropping means respectively on the face of the projected image for programming into the system predetermined horizontal and vertical cropping limits, and actuating means for actuating the blanking means to preclude spot scanning outside a predetermined area defined by the horizontal and vertical cropping limits.
Claim 9
Dependent Claim
209 words
In a photographic copying system including a projection device for forming a projected image of an original transparency, a cathode ray tube for generating a polychromatic scanning beam, blanking means for selectively blanking the beam, horizontal and vertical deflection means for directing the scanning beam to a spot on the original transparency which modulates the scanning beam, an output film, a recorder means for accepting the modulated beam and recording the modulated beam on the output film, means for producing relative horizontal and vertical movement between the recorder and the output film in a plane parallel to that of the output film, the improvement comprising a horizontal cropping means movable vertically across the face of the projected image and a vertical cropping means movable horizontally across the face of the projected image for defining the area of the original transparency to be scanned by the cathode ray tube, adjustable horizontal and vertical cropping control means responsive to the positions of the horizontal and vertical cropping means respectively on the face of the projected image for programming into the system predetermined horizontal and vertical cropping limits, and actuating means for actuating the blanking means to preclude spot scanning outside a predetermined area defined by the horizontal and vertical cropping limits.
Claim 10
Dependent Claim
209 words
In a photographic copying system including a projection device for forming a projected image of an original transparency, a cathode ray tube for generating a polychromatic scanning beam, blanking means for selectively blanking the beam, horizontal and vertical deflection means for directing the scanning beam to a spot on the original transparency which modulates the scanning beam, an output film, a recorder means for accepting the modulated beam and recording the modulated beam on the output film, means for producing relative horizontal and vertical movement between the recorder and the output film in a plane parallel to that of the output film, the improvement comprising a horizontal cropping means movable vertically across the face of the projected image and a vertical cropping means movable horizontally across the face of the projected image for defining the area of the original transparency to be scanned by the cathode ray tube, adjustable horizontal and vertical cropping control means responsive to the positions of the horizontal and vertical cropping means respectively on the face of the projected image for programming into the system predetermined horizontal and vertical cropping limits, and actuating means for actuating the blanking means to preclude spot scanning outside a predetermined area defined by the horizontal and vertical cropping limits.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |