US3715160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying and photographic contact printing machines
Assignee: Individual
•
Filing: 1971-06-21
•
Granted: 1973-02-06
•
Expires: 1991-06-21
Abstract
Abstract A combination copying machine and photographic contact printer having two light stations; for copy making one is used for exposing the sensitive sheet material through the original and the other is used for developing the sensitive sheet material. For photographic contact print-making one or both of the stations are used as required by the photographic transparency from which the print is to be made, the type of reproduction and the reproduction material. A photographic contact printer having a light station. The sensitive sheet material is exposed through the negative and the light is used for exposing-developing the sensitive sheet material.
Inventors
- 👤 S Fader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:54
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/002; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/303
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
237 words
A machine for producing a copy of an original on a sensitive sheet which is developed by light comprising: a pair of superposed housings, each having an open face, placed so that the open faces are opposed to each other; said housings having superposed stepped ledges forming a tracked opening between said open faces; a first light source mounted in one of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto through an original for sufficient time, an undeveloped image of such original is imposed thereon; a second light source mounted in the other of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto for sufficient time, an image of such original is developed thereon; holding means insertable in and removable from said tracked opening comprising an opaque support and a transparent sheet for holding therebetween an original and a sensitive sheet in superposition such that when the transparent sheet is facing the first light source, an undeveloped image of said original is imposed on such sensitive sheet and when such sensitive sheet is exposed to the second light source for a sufficient time, the undeveloped image of such original on such sensitive sheet is developed; said opaque support of said holding means precluding light from either of said sources from simultaneously impinging upon such sheets contained in said holding means.
Claim 2
Dependent Claim
237 words
A machine for producing a copy of an original on a sensitive sheet which is developed by light comprising: a pair of superposed housings, each having an open face, placed so that the open faces are opposed to each other; said housings having superposed stepped ledges forming a tracked opening between said open faces; a first light source mounted in one of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto through an original for sufficient time, an undeveloped image of such original is imposed thereon; a second light source mounted in the other of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto for sufficient time, an image of such original is developed thereon; holding means insertable in and removable from said tracked opening comprising an opaque support and a transparent sheet for holding therebetween an original and a sensitive sheet in superposition such that when the transparent sheet is facing the first light source, an undeveloped image of said original is imposed on such sensitive sheet and when such sensitive sheet is exposed to the second light source for a sufficient time, the undeveloped image of such original on such sensitive sheet is developed; said opaque support of said holding means precluding light from either of said sources from simultaneously impinging upon such sheets contained in said holding means.
Claim 3
Dependent Claim
237 words
A machine for producing a copy of an original on a sensitive sheet which is developed by light comprising: a pair of superposed housings, each having an open face, placed so that the open faces are opposed to each other; said housings having superposed stepped ledges forming a tracked opening between said open faces; a first light source mounted in one of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto through an original for sufficient time, an undeveloped image of such original is imposed thereon; a second light source mounted in the other of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto for sufficient time, an image of such original is developed thereon; holding means insertable in and removable from said tracked opening comprising an opaque support and a transparent sheet for holding therebetween an original and a sensitive sheet in superposition such that when the transparent sheet is facing the first light source, an undeveloped image of said original is imposed on such sensitive sheet and when such sensitive sheet is exposed to the second light source for a sufficient time, the undeveloped image of such original on such sensitive sheet is developed; said opaque support of said holding means precluding light from either of said sources from simultaneously impinging upon such sheets contained in said holding means.
Claim 4
Dependent Claim
237 words
A machine for producing a copy of an original on a sensitive sheet which is developed by light comprising: a pair of superposed housings, each having an open face, placed so that the open faces are opposed to each other; said housings having superposed stepped ledges forming a tracked opening between said open faces; a first light source mounted in one of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto through an original for sufficient time, an undeveloped image of such original is imposed thereon; a second light source mounted in the other of said pair of housings having a wave length such that when a sensitive sheet is exposed thereto for sufficient time, an image of such original is developed thereon; holding means insertable in and removable from said tracked opening comprising an opaque support and a transparent sheet for holding therebetween an original and a sensitive sheet in superposition such that when the transparent sheet is facing the first light source, an undeveloped image of said original is imposed on such sensitive sheet and when such sensitive sheet is exposed to the second light source for a sufficient time, the undeveloped image of such original on such sensitive sheet is developed; said opaque support of said holding means precluding light from either of said sources from simultaneously impinging upon such sheets contained in said holding means.
Claim 5
Dependent Claim
57 words
The invention of claim 1 wherein: said housings are hinged along one edge of each of them so as to be movable between a first position wherein the open faces are close to one another and a second position wherein the open faces are spaced from one another to permit access to the interior of the machine.
Claim 6
Dependent Claim
26 words
The invention of claim 5 including: reflecting means mounted behind each of the light sources to obtain an even distribution of light across the open face.
Claim 7
Dependent Claim
26 words
The invention of claim 1 including: reflecting means mounted behind each of the light sources to obtain an even distribution of light across the open face.
Claim 8
Dependent Claim
14 words
The invention of claim 1 wherein: said two housings are affixed to each other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |