US3709686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing selected color photographs
Assignee: Individual
•
Filing: 1971-05-03
•
Granted: 1973-01-09
•
Expires: 1991-05-03
Abstract
Abstract Method of producing selected color photographs from photographs recorded on black-and-white negative materials by printing the negative onto color print material with illumination filtered through a negative color film (filter) obtained by the following method: A. MAKING A MASTER COLOR SPECIMEN CHART; B. MAKING A MULTI-COLOR NEGATIVE COLOR FILM STEP WEDGE OF SAID MASTER CHART; C. MAKING A SINGLE-COLOR, MULTI-SHADE, MULTI-TINT NEGATIVE COLOR FILM STEP WEDGE OF SAID MULTI-COLOR NEGATIVE COLOR FILM STEP WEDGE, AND D. MAKING INDIVIDUAL NEGATIVE COLOR FILMS (FILTERS) OF THE INDIVIDUAL WEDGE STEPS OF SAID SINGLE COLOR STEP WEDGE.
Inventors
- 👤 J Erdell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:50
CPC Classifications
G; G03; G03F; G03F3/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
The method of claim 1, wherein: a. a multi-color step wedge film is made of said master multi-color specimen chart, and b. a single-color, multi-shade and multi-tint step wedge film is made of the individual wedge steps of the multi-color step wedge film, c. the individual negative color films being made of the individual wedge steps of said single-color, multi-shade, multi-tint step wedge film.
Claim 2
Dependent Claim
96 words
The method of claim 2, wherein: a. the master multi-color specimen chart is prepared by: i. arranging a plurality of color swatch strips in spaced parallel relationship, and ii. attaching said color swatch strips to a support board, and b. the multi-color step wedge is made by: i. repeatedly exposing the master multi-color specimen chart to a color film, while ii. sequentially masking portions of the master multi-color specimen chart from the color film transversely of the color swatch strips, iii. thereby progressively exposing successive transverse portions of the multi-color specimen chart to said color film.
Claim 3
Dependent Claim
71 words
The method of claim 3, wherein the single-color, multi-shade and multi-tint step wedge is made by: a. repeatedly exposing an individual wedge step of the multi-color step wedge film to a color film, while b. masking all of the other wedge steps and c. sequentially masking portions of the color film from said individual wedge step, d. thereby progressively exposing successive portions of said color film to said individual wedge step.
Claim 4
Dependent Claim
31 words
The method of claim 3, wherein: a. progressively decreasing areas of the master multi-color specimen chart are masked, while b. progressively increasing areas of said master multi-color specimen chart are exposed.
Claim 5
Dependent Claim
31 words
The method of claim 3, wherein: a. progressively increasing areas of the master multi-color specimen chart are masked, while b. progressively decreasing areas of said master multi-color specimen chart are exposed.
Claim 6
Dependent Claim
31 words
The method of claim 4, wherein: a. progressively decreasing areas of the multi-color step wedge film are masked, while b. progressively increasing areas of said multi-color step wedge film are exposed.
Claim 7
Dependent Claim
31 words
The method of claim 4, wherein: a. progressively increasing areas of the multi-color step wedge film are masked, while b. progressively decreasing areas of said multi-color step wedge film are exposed.
Claim 8
Independent Claim
45 words
The method of producing photographs in color from black-and-white original subjects which comprises printing a black-and-white internegative record of a black-and-white original subject onto color print material with light transmitted through a color filter produced photographically from a reflectance specimen of a colored printing ink.
Claim 9
Dependent Claim
62 words
The method of claim 9, wherein: a. a master chart of reflectance specimens of colored printing inks is prepared, b. light transmitting filters of the reflectance color specimens are photographically produced, and c. a black and white internegative record is printed onto color print material with light transmitted by at least one color filter produced photographically from a selected color reflectance specimen.
Claim 10
Independent Claim
63 words
A method of making a multi-color step wedge, comprising the steps of: a. prepariNg a master multi-color specimen chart, and b. repeatedly exposing said master chart to a color film, while c. interposing a mask between said master chart and said color film, and d. intermittently moving said mask in successive steps to progressively change the extent of the masked and exposed areas.
Claim 11
Dependent Claim
29 words
The method of claim 11, wherein: a. progressively decreasing areas of the master multi-color specimen chart are masked, while b. progressively increasing areas of said master chart are exposed.
Claim 12
Dependent Claim
29 words
The method of claim 11, wherein: a. progressively increasing areas of the master multi-color specimen chart are masked, while b. progressively decreasing areas of said master chart are exposed.
Claim 13
Independent Claim
65 words
A method of making a single-color, multi-shade, multi-tint step wedge, comprising the steps of: a. preparing a single color specimen, and b. repeatedly exposing said single color specimen to a color film, while c. interposing a mask between said color specimen and said color film, and d. intermittently moving said mask in successive steps to progressively change the extent of the masked and exposed areas.
Claim 14
Dependent Claim
27 words
The method of claim 14, wherein: a. progressively decreasing areas of the color film are masked, and b. progressively increasing areas of said color film are exposed.
Claim 15
Dependent Claim
27 words
The method of claim 14, wherein: a. progressively increasing areas of the color film are masked, and b. progressively decreasing areas of said color film are exposed.
Claim 16
Dependent Claim
56 words
A multi-color step wedge comprising: a. a color film of a multi-color specimen chart, b. said color film being divided into a plurality of steps for each color specimen, c. each such step differing in shade or tint from the other steps of the same color by reason of different exposure to the multi-color specimen chart.
Claim 17
Dependent Claim
43 words
A single-color step wedge, comprising: a. a color film of a single-color specimen, b. said color film being divided into a plurality of steps c. which differ from each other in shade or tint by reason of different exposure to the color specimen.
Claim 18
Independent Claim
82 words
The method of producing photographs in color from black-and-white original subjects which comprises the steps of: a. preparing a master multi-color specimen chart, b. making a step-wedge film of said master multi-color specimen chart, c. making individual enlarged negative color films in different shades and tints of the individual wedge steps of said step wedge film, and d. printing a black-and-white internegative record of a black-and-white original subject onto color print material with light transmitted through said individual enlarged negative color films.
References Cited (Backward Citations)
US1703449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |