Patent US3602590A successfully refreshed from Google Patents.
US3602590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing photographic print comprising high contrast and lesser contrast portions
Assignee: Individual
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Filing: 1969-07-31
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Granted: 1971-08-31
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Expires: 1989-07-31
Abstract
Abstract At least one negative for contact printing of a pictorial portion of the print is prepared on relatively low contrast film. A second negative which is transparent in the area in which said pictorial portion is to appear, and the size of which is reduced from the size of the print that is to be produced, is prepared on relatively high contrast film. An enlarged image is projected from the second negative onto a supporting surface while the first negative is located in such a position relative to the supporting surface as to cover the projection of the transparent area of the second negative. Sensitized paper is exposed on the supporting surface, beneath the so-located first negative, to produce a photographic print by subjecting it to the enlarged projected image from the second negative while transmitting light through the first negative from the transparent area of the second negative.
Inventors
- 👤 Alfred B Lukens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:18
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
218 words
A method of producing a photographic print comprising a high contrast portion including reading matter, and a pictorial portion of lesser contrast, comprising the steps of (a) preparing a copy of the material which is to appear on the high contrast portion, having a black area where the pictorial portion is to appear, (b) photographing such copy on relatively high contrast film to produce a negative which has a transparent area where the pictorial portion is to appear, and the size of which is reduced from the size of the finished print that is to be produced, (c) preparing a second negative on lesser contrast film which shows the pictorial portion and is slightly larger than the area of the finished print where the pictorial portion is to appear, (d) projecting an enlarged image from the first negative onto a supporting surface, while (e) locating the second negative in such a position on the supporting surface as to overlap on all sides the projection of the transparent area of the first negative, and (f) exposing sensitized paper on the supporting surface, beneath the thus located second negative, so as to subject the sensitized paper to the enlarged projected image from the first negative while transmitting light from the transparent area of the first negative through the second negative.
Claim 2
Independent Claim
218 words
A method of producing a photographic print comprising a high contrast portion including reading matter, and a pictorial portion of lesser contrast, comprising the steps of (a) preparing a copy of the material which is to appear on the high contrast portion, having a black area where the pictorial portion is to appear, (b) photographing such copy on relatively high contrast film to produce a negative which has a transparent area where the pictorial portion is to appear, and the size of which is reduced from the size of the finished print that is to be produced, (c) preparing a second negative on lesser contrast film which shows the pictorial portion and is slightly larger than the area of the finished print where the pictorial portion is to appear, (d) projecting an enlarged image from the first negative onto a supporting surface, while (e) locating the second negative in such a position on the supporting surface as to overlap on all sides the projection of the transparent area of the first negative, and (f) exposing sensitized paper on the supporting surface, beneath the thus located second negative, so as to subject the sensitized paper to the enlarged projected image from the first negative while transmitting light from the transparent area of the first negative through the second negative.
Claim 3
Dependent Claim
45 words
A method of producing a photographic print according to claim 1 wherein, during the exposure of the sensitized paper, the second negative is held in position, with its emulsion side in contact with the sensitized paper, by a transparent plate resting upon the sensitized paper.
Claim 4
Dependent Claim
114 words
A method of producing a photographic print according to claim 2 comprising the steps of applying an adhesive material on the back of the second negative, placing its emulsion side down on the supporting surface while locating it relative to the supporting surface, then placing the transparenT plate in a fixed position on top of the second negative, to cause the second negative to adhere to the transparent plate, removing the transparent plate with the adhering negative in order to permit the sensitized paper to be placed on the supporting surface, and then maintaining the transparent plate in said fixed position while projecting the enlarged image of the first negative through the transparent plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |