US3687552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for contacting and exposing sensitized elements
Assignee: EIDP Inc
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Filing: 1971-09-17
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Granted: 1972-08-29
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Expires: 1991-09-17
Abstract
Abstract A device for holding in optical contact a photographic transparency and a sensitized element, having a pressure frame and an exposure frame. The pressure frame has a plurality of wheels disposed in columns on rows of shafts in a pattern to provide uniform exposure of all areas of the sensitized element to a source of actinic radiation, and to hold the transparency in optical contact with the sensitized element, when the exposure frame is affixed to the element and transported through the pressure frame. The device is useful for uniformly exposing a series of sensitized elements conveyed in a continuous web and for exposing individual sensitized elements.
Inventors
- 👤 Robert James Almond
- 👤 Edward Francis Hagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:08
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/04; G03B27/06; H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0082
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
A device for holding in optical contact a photographic transparency and a sensitized element and exposing said element to actinic radiation comprising: a. a source of actinic radiation within a housing, b. an exposure frame having at least one transparent plate with registration pins for holding a photographic transparency in registration with a sensitized element, c. a pressure frame, having cooperating frame members with columns of wheels disposed in rows on shafts across the width of the pressure frame, and having means for urging said cooperating frame members against said exposure frame and holding said transparency in optical contact with the sensitized element in said exposure frame, and d. means for conveying said exposure frame containing said transparency and sensitized element in registration, through said cooperating frame members during exposure to said source of actinic radiation.
Claim 2
Independent Claim
136 words
A device for holding in optical contact a photographic transparency and a sensitized element and exposing said element to actinic radiation comprising: a. a source of actinic radiation within a housing, b. an exposure frame having at least one transparent plate with registration pins for holding a photographic transparency in registration with a sensitized element, c. a pressure frame, having cooperating frame members with columns of wheels disposed in rows on shafts across the width of the pressure frame, and having means for urging said cooperating frame members against said exposure frame and holding said transparency in optical contact with the sensitized element in said exposure frame, and d. means for conveying said exposure frame containing said transparency and sensitized element in registration, through said cooperating frame members during exposure to said source of actinic radiation.
Claim 3
Dependent Claim
63 words
A device as recited in claim 1, wherein the sensitized elements are conveyed on a continuous web, and said means for conveying the sensitized elements is a pair of coacting nip rolls, at least one of which is a driven roll, disposed subsequent to said cooperating frame members, for conveying the sensitized elements througH said cooperating frame members by pulling the continuous web.
Claim 4
Dependent Claim
36 words
A device as recited in claim 2, wherein said coacting nip rolls are heated rolls for delaminating the continuous web from the sensitized elements, some or all of the photoresist material remaining laminated to the boards.
Claim 5
Dependent Claim
33 words
A device as recited in claim 2, including another pair of coacting nip rolls, disposed previous to said cooperating frame members, for laminating photoresist material to an article to form a sensitized element.
Claim 6
Dependent Claim
56 words
A device as recited in claim 1, wherein said cooperating frame members have an identical number of wheels in each column to provide uniform exposure to all areas of the sensitized element as it is conveyed through said cooperating frame members in registration with the photographic transparency in said exposure frame and exposed to actinic radiation.
Claim 7
Dependent Claim
26 words
The device of claim 1 wherein said exposure frame has upper and lower transparent plates with registration pins for holding transparencies in registration with said element.
Claim 8
Dependent Claim
26 words
The device of claim 1 wherein said exposure frame has a single transparent plate on one side and a compressible foam material on the other side.
Claim 9
Dependent Claim
14 words
The device of claim 1 wherein said transparent plate is poly(methyl methacrylate) or glass.
Claim 10
Dependent Claim
20 words
The device of claim 1 wherein said means for urging said cooperating frame members comprises a plurality of air pistons.
References Cited (Backward Citations)
US3313225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |