Patent US3876303A successfully refreshed from Google Patents.
US3876303A
Expired / Lapsed
US
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Method and apparatus for continuous, successive or stepwise exposure of a light-sensitive material
Assignee: Misomex AB
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Filing: 1973-05-17
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Granted: 1975-04-08
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Expires: 1993-05-17
Abstract
Abstract A method and apparatus for exposing light sensitive materials. An exposing means is moved relative to a light sensitive material so as to continuously or stepwise cover a selected portion of the surface of the material. The exposure value of the exposing means is changed during successive portions of said relative movement to compensate for secondary curing or fading of the latent exposed image.
Inventors
- 👤 Gustav Talts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:16
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70483; G03F7/7055; G03F7/70558; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/16; G03B27/72; G03C; G03C5/00; G03C5/02; G03F7/70425
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
62 words
A method of exposing light sensitive material comprising the steps of: moving an exposure means relative to the light sensitive material so as to cover a selected portion of the surface of the material, and changing the exposure value of the exposure means during successive portions of said relative movement to compensate for secondary curing or fading of the latent exposed image.
Claim 2
Independent Claim
62 words
A method of exposing light sensitive material comprising the steps of: moving an exposure means relative to the light sensitive material so as to cover a selected portion of the surface of the material, and changing the exposure value of the exposure means during successive portions of said relative movement to compensate for secondary curing or fading of the latent exposed image.
Claim 3
Dependent Claim
17 words
The method according to claim 1, said changing step including extending the exposure time during successive portions.
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein said changing step includes increasing the light intensity during successive portions.
Claim 5
Dependent Claim
18 words
The method according to claim 1, wherein the changing step includes reducing the exposure time during successive portions.
Claim 6
Dependent Claim
18 words
The method according to claim 1, wherein said changing step includes decreasing the light intensity during successive portions.
Claim 7
Dependent Claim
18 words
The method according to claim 1, including changing the exposure value continuously while operating the exposure means stepwise.
Claim 8
Dependent Claim
26 words
The method according to claim 1, wherein the speed with which the exposure value is changed is dependent on the nature of the light sensitive material.
Claim 9
Dependent Claim
12 words
The method according to claim 1, including changing the exposure value linearly.
Claim 10
Dependent Claim
12 words
The method according to claim 1, including changing the exposure value exponentially.
Claim 11
Independent Claim
76 words
An apparatus for exposing a light sensitive material, comprising: exposure means for exposing the light sensitive material, means for establishing relative movement between the exposure means and the light sensitive means so that the exposure means covers a selected portion of the light sensitive material, and means for changing the exposure value of the exposure means during successive portions of the said relative movement to compensate for secondary curing or fading of the latent exposed image.
Claim 12
Independent Claim
76 words
An apparatus for exposing a light sensitive material, comprising: exposure means for exposing the light sensitive material, means for establishing relative movement between the exposure means and the light sensitive means so that the exposure means covers a selected portion of the light sensitive material, and means for changing the exposure value of the exposure means during successive portions of the said relative movement to compensate for secondary curing or fading of the latent exposed image.
Claim 13
Dependent Claim
101 words
An apparatus according to claim 10, further comprising a supplying means for feeding electrical current, a compensation means operatively connected to receive current from the feeder means for initiating a change of exposure value during different of said portions of relative movement, and release means operatively connected to the compensation means and the exposure means for effecting the exposure during each of said portions of the relative movement, said exposure means including means for receiving a signal from the release means during each of said portions and for transmitting the exposure onto the light sensitive material during each of said portions.
Claim 14
Dependent Claim
32 words
An apparatus according to claim 11, said compensation means including a motor driven potentiometer for changing the voltage associated with each exposure in accordance with either a linear or an exponentional function.
Claim 15
Dependent Claim
43 words
An apparatus according to claim 12, said compensation means further containing a manually controllable potentiometer connected in series with the motor driven potentiometer for controlling the motor driven potentiometer to change the voltage to change the speed with which the exposure is obtained.
Claim 16
Dependent Claim
32 words
An apparatus according to claim 11, said release means comprising means for providing the exposure means with a voltage of a duration or intensity corresponding to the condition of the compensation means.
Claim 17
Dependent Claim
51 words
Apparatus according to claim 14, said release means comprising a capacitor pack having a discharge element connected in parallel therewith, an amplifier and an exposure switch for transmitting a voltage of a particular duration to the exposure means, said amplifier being positioned to receive a voltage for operating said exposure switch.
Claim 18
Dependent Claim
28 words
An apparatus according to claim 15, said exposure means comprising a controlling mechanism having means for providing a continuous, successive or stepwise exposure of a light sensitive material.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |