US3873201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining exposure amounts in photographic printing
Assignee: Konica Minolta Inc
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Filing: 1973-08-17
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Granted: 1975-03-25
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Expires: 1993-08-17
Abstract
Abstract This invention relates to a method of determining exposure amounts in photographic printing. In the method of the present invention, optimum exposure amounts in printing for a first negative frame on a strip is determined, optimum exposure amounts in printing for a second negative frame on the strip which is deemed to be equivalent to said first negative frame with respect to the characteristics are determined, and actual exposure amounts are finally determined based on the combination provisionally determined exposure amounts of said first and those of said second frame or frames.
Inventors
- 👤 Tadashi Amano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:29
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A method of determining exposure amounts in photographic printing for a strip carrying a plurality of pictures comprising the steps of measuring characteristics of a first negative frame on said strip; provisionally determining optimum exposure amounts in printing for said first negative frame based on the result obtained in said measuring step; storing said optimum exposure amounts; measuring characteristics of at least one of several negative frames on said strip other than said first negative frame; selecting a second negative frame which is deemed to be equivalent to said first negative frame with respect to the characteristics from said several negative frames, said second negative frame and said first negative frame consecutively following one another on said strip; provisionally determining exposure amounts based on the result obtained in measuring said second frame; and finally determining exposure amounts for said first frame based on the combination provisionally determined exposure amounts of said first and those of said second frame.
Claim 2
Independent Claim
158 words
A method of determining exposure amounts in photographic printing for a strip carrying a plurality of pictures comprising the steps of measuring characteristics of a first negative frame on said strip; provisionally determining optimum exposure amounts in printing for said first negative frame based on the result obtained in said measuring step; storing said optimum exposure amounts; measuring characteristics of at least one of several negative frames on said strip other than said first negative frame; selecting a second negative frame which is deemed to be equivalent to said first negative frame with respect to the characteristics from said several negative frames, said second negative frame and said first negative frame consecutively following one another on said strip; provisionally determining exposure amounts based on the result obtained in measuring said second frame; and finally determining exposure amounts for said first frame based on the combination provisionally determined exposure amounts of said first and those of said second frame.
Claim 3
Dependent Claim
39 words
A method of determining exposure amounts in photographic printing according to claim 1, comprising detecting the type of light used in taking photograph by comparing the results of measurements of said first frame and that of said second frame.
Claim 4
Dependent Claim
47 words
A method according to claim 1 wherein the selection of said second negative frame which is deemed to be equivalent to said first negative frame is effected such that selection is made from among a plurality of negative frames immediately preceding or succeeding said first negative frame.
Claim 5
Dependent Claim
52 words
A method according to claim 1 wherein the step of finally determining comprises comparing the negative frame to be printed with other negative frames with respect to the large area transmittance density of the negative frames including comparing them with respect to the densities of transmittance of blue, green and red colors.
Claim 6
Dependent Claim
60 words
A method according to claim 1 Wherein the final determination of exposure amounts for the negative frame to be printed includes comparing optimum exposure amounts for the selected negative frame with said stored exposure amounts and then selecting an average of all the exposure amounts as a final optimum exposure amount when the difference between them is less than 0.10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |