US4529301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color print system
Assignee: Individual
•
Filing: 1983-10-17
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Granted: 1985-07-16
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Expires: 2003-10-17
Abstract
Abstract A system for optimizing the printing of photographs. For color prints, a piece of photography paper is progressively and sequentially exposed to varying amounts of light of the primary colors, developing a color matrix on the paper. A neutral grey area on the paper identifies the optimum settings for the color filters and the exposure settings for the print system. A similar technique is presented for development of black and white prints by the generation of a grey level matrix, varying as to exposure setting.
Inventors
- 👤 Philip L. Rountree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A process for making color prints, comprising the steps of: exposing photography paper to a first color light source; progressively and sequentially exposing first strips of said paper to decreasing amounts of light of a second color; progressively and sequentially exposing second strips of said paper to decreasing amounts of light of a third color, said second strips being normal to said first strips; and developing said paper after the steps of exposing, and obtaining therefrom a color matrix comprising a plurality of color elements.
Claim 2
Dependent Claim
85 words
A process for making color prints, comprising the steps of: exposing photography paper to a first color light source; progressively and sequentially exposing first strips of said paper to decreasing amounts of light of a second color; progressively and sequentially exposing second strips of said paper to decreasing amounts of light of a third color, said second strips being normal to said first strips; and developing said paper after the steps of exposing, and obtaining therefrom a color matrix comprising a plurality of color elements.
Claim 3
Dependent Claim
26 words
The process according to claim 1 wherein each color element has associated therewith indications of light intensity levels to which said color element has been exposed.
Claim 4
Dependent Claim
16 words
The process according to claim 2 wherein said indications are filter settings of a color enlarger.
Claim 5
Dependent Claim
25 words
The process according to claim 3 wherein a grey level exposure chart is compared against said color elements for selection of a neutral grey element.
Claim 6
Dependent Claim
20 words
The process according to claim 4 which further includes selecting color density and exposure settings from said neutral grey element.
Claim 7
Dependent Claim
78 words
The process according to claim 1 which further includes the step of exposing and developing a second piece of photography paper in the manner set forth in claim 1, but interchanging said first and second colors, and exposing and developing a third piece of photography paper in the manner set forth in claim 1, but interchanging said first and third colors, obtaining three color matrices therefrom, and subsequently joining together said three color matrices in a trisector arrangement.
Claim 8
Dependent Claim
21 words
The process according to claim 6 which further includes the step of photographing said trisector arrangement and generating a transparency therefrom.
References Cited (Backward Citations)
US3165970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |