US3566763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Displacement responsive apparatus for producing patterns on a photosensitive surface
Assignee: Warner and Swasey Co
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Filing: 1968-06-05
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Granted: 1971-03-02
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Expires: 1988-06-05
Abstract
Abstract An apparatus for producing uniform patterns on a photosensitive surface by triggering a light source at intervals determined by the change in displacement of the photosensitive surface relative to the light source. The light source illuminates a predetermined portion of the surface at intervals determined by the change in displacement of the photosensitive surface relative to the light source. A counting mechanism receives an electrical pulse for each equal increment of movement between light source and surface and counts the pulses. After counting a predetermined number of pulses, it produces an output signal which activates the light source.
Inventors
- 👤 George S Knopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:19
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70425; G03F7/70691; G03F7/70716; Y; Y10; Y10S; Y10S101/00; Y10S101/36
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
222 words
Apparatus for producing at least one pattern having a uniform density upon a photosensitive surface relatively movable with respect to a light source by controlling the surface exposure rate independent of the relative speed of movement of the photosensitive surface comprising: a controllable light source; an opaque mask having a predetermined aperture therein operatively associated with said light source for transmission of light therethrough to the photosensitive surface; means supporting the photosensitive surface and said light source for relative movement therebetween; sensing means producing electrical input pulses in response to the relative movement; a first counter responsive to the electrical input pulses of said sensing means providing a controlled output electrical pulse for energization of said light source to provide momentary illumination of the photosensitive surface; a second counter responsive to the electrical input pulses of said sensing means providing a controlled output bias pulse; gate means operatively connected to said sensing means and to said first and said second counters and responsive to the output bias pulse of said second counter to prevent transmission of all electrical pulses through said gate means such that electrical input pulses resulting from continued relative movement between said photosensitive surface and said light source are not transmitted to said first counter; and means to reset said first and said second counters to zero count positions.
Claim 2
Dependent Claim
222 words
Apparatus for producing at least one pattern having a uniform density upon a photosensitive surface relatively movable with respect to a light source by controlling the surface exposure rate independent of the relative speed of movement of the photosensitive surface comprising: a controllable light source; an opaque mask having a predetermined aperture therein operatively associated with said light source for transmission of light therethrough to the photosensitive surface; means supporting the photosensitive surface and said light source for relative movement therebetween; sensing means producing electrical input pulses in response to the relative movement; a first counter responsive to the electrical input pulses of said sensing means providing a controlled output electrical pulse for energization of said light source to provide momentary illumination of the photosensitive surface; a second counter responsive to the electrical input pulses of said sensing means providing a controlled output bias pulse; gate means operatively connected to said sensing means and to said first and said second counters and responsive to the output bias pulse of said second counter to prevent transmission of all electrical pulses through said gate means such that electrical input pulses resulting from continued relative movement between said photosensitive surface and said light source are not transmitted to said first counter; and means to reset said first and said second counters to zero count positions.
Claim 3
Dependent Claim
103 words
An apparatus as set forth in claim 1 in which said first counter further includes adjustable preset means for adjusting the frequency of said controlled output electrical pulse wherein a predetermined number of input pulses must be received and counted before an output pulse occurs; and reset means responsive to said first counter output electrical pulse operatively connected to said first counter for returning said counter to a zero count position upon transmission of said output pulse, whereby the frequency of illumination of said photosensitive surface is a function of the relative distance moved and is determined by the said adjustable preset means.
Claim 4
Dependent Claim
161 words
Apparatus for producing at least one pattern having a uniform density upon a photosensitive surface relatively movable with respect to a light source by controlling the illumination and exposure rate independent of the relative speed of movement of the photosensitive surface comprising: a controllable light source; an opaque mask having a predetermined aperture therein operatively associated with said light source for transmission of light therethrough to the photosensitive surface; means supporting the photosensitive surface and said light source for relative movement therebetween; means responsive to the relative movement producing a first signal indicating each increment of relative movement; a counting mechanism operatively connected to said signal producing means for receiving and counting the signals; and said counting mechanism providing a controlled second signal for operation of said light source to provide momentary illumination of said photosensitive surface in response to predetermined increments of movement between the photosensitive surface and said light source to expose a precision pattern on said photosensitive surface.
Claim 5
Dependent Claim
161 words
Apparatus for producing at least one pattern having a uniform density upon a photosensitive surface relatively movable with respect to a light source by controlling the illumination and exposure rate independent of the relative speed of movement of the photosensitive surface comprising: a controllable light source; an opaque mask having a predetermined aperture therein operatively associated with said light source for transmission of light therethrough to the photosensitive surface; means supporting the photosensitive surface and said light source for relative movement therebetween; means responsive to the relative movement producing a first signal indicating each increment of relative movement; a counting mechanism operatively connected to said signal producing means for receiving and counting the signals; and said counting mechanism providing a controlled second signal for operation of said light source to provide momentary illumination of said photosensitive surface in response to predetermined increments of movement between the photosensitive surface and said light source to expose a precision pattern on said photosensitive surface.
Claim 6
Dependent Claim
142 words
Apparatus for producing at least one uniform density pattern upon a photosensitive surface comprising: a controllable light source; means for supporting the photosensitive surface and the said light source for relative movement therebetween; means for sensing fixed increments of movement between said light source and the photosensitive surface; resettable counting means, operatively associated with said sensing means, for counting the number of fixed increments of movement between said light source and the photosensitive surface, said counting means responsive to a predetermined sum of fixed increments to produce no output signal until said predetermined sum is reached and to both produce an output signal and reset itself to a zero count position when said predetermined sum is reached; and means responsive to said output signal momentarily energizing said light source to illuminate the photosensitive surface and thereby produce a uniform density pattern thereon.
Claim 7
Dependent Claim
142 words
Apparatus for producing at least one uniform density pattern upon a photosensitive surface comprising: a controllable light source; means for supporting the photosensitive surface and the said light source for relative movement therebetween; means for sensing fixed increments of movement between said light source and the photosensitive surface; resettable counting means, operatively associated with said sensing means, for counting the number of fixed increments of movement between said light source and the photosensitive surface, said counting means responsive to a predetermined sum of fixed increments to produce no output signal until said predetermined sum is reached and to both produce an output signal and reset itself to a zero count position when said predetermined sum is reached; and means responsive to said output signal momentarily energizing said light source to illuminate the photosensitive surface and thereby produce a uniform density pattern thereon.
Claim 8
Dependent Claim
22 words
The combination according to claim 4 wherein means are provided for producing relative movement between the photosensitive surface and said light source.
Claim 9
Dependent Claim
85 words
Apparatus for producing at least one uniform density pattern upon a photosensitive surface comprising: a controllable light source; means producing relative movement between the photosensitive surface and said light source; and means constructed to activate said light source only at equally spaced intervals activating means including means for counting the number of equal increments smaller than said intervals in relative movement between said photosensitive surface and said light source to determine said equal intervals and thereby produce a uniform density pattern on the photosensitive surface.
Claim 10
Dependent Claim
85 words
Apparatus for producing at least one uniform density pattern upon a photosensitive surface comprising: a controllable light source; means producing relative movement between the photosensitive surface and said light source; and means constructed to activate said light source only at equally spaced intervals activating means including means for counting the number of equal increments smaller than said intervals in relative movement between said photosensitive surface and said light source to determine said equal intervals and thereby produce a uniform density pattern on the photosensitive surface.
Claim 11
Dependent Claim
100 words
Apparatus for producing at least one uniform density pattern upon a photosensitive surface comprising: a controllable light source; means for producing relative movement between the photosensitive surface and said light source; and means sensing the amount of relative movement between the photosensitive surface and said light source during the time interval in which said photosensitive surface and said light source are moving relative to each other, and activating said light source at intervals separated by equal amounts of sensed relative movement between the photosensitive surface and said light source to thereby produce a uniform density pattern on the photosensitive surface.
Claim 12
Dependent Claim
100 words
Apparatus for producing at least one uniform density pattern upon a photosensitive surface comprising: a controllable light source; means for producing relative movement between the photosensitive surface and said light source; and means sensing the amount of relative movement between the photosensitive surface and said light source during the time interval in which said photosensitive surface and said light source are moving relative to each other, and activating said light source at intervals separated by equal amounts of sensed relative movement between the photosensitive surface and said light source to thereby produce a uniform density pattern on the photosensitive surface.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |