US3601485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring and controlling the amounts of colored light in the printing of photographic transparencies
Assignee: Durst Group AG
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Filing: 1969-02-12
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Granted: 1971-08-24
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Expires: 1989-02-12
Abstract
Abstract An apparatus for making prints from colored photographic transparencies performs color measuring and printing either simultaneously or sequentially. In simultaneous operation, part of the light passing through the transparency is utilized to terminate the exposures to the printing light of each of the primary colors. Sequentially auxiliary sources of light of each of the primary colors are adjusted to the same combination and intensity as in a selected portion of the transparency having an arbitrary combination of these colors. The adjusted light is then used to terminate the exposures to the light of each of the primary colors. A semitransparent mirror upon a movable sensing head diverts part of the light passing through the transparencies to terminate the exposures or uses, therefor the light adjusted. A fiber optic samples the combination of colors in a selected portion of the transparency during sequential measuring and projects them upon the sensing head. The auxiliary sources are then adjusted to the same combination and intensity as the selected portion of the transparency and this light is projected upon the sensing head during the sequential printing process to terminate the exposures to each of the primary colors. The sensing head slides back and forth under the focusing lens carrier within which the auxiliary sources of light and an apertured reflector (through which the fiber optic extends) are conveniently mounted with a diaphragm in-between for adjusting the overall intensity of the light from the auxiliary sources.
Inventors
- 👤 Siegfried Barbieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:19
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
117 words
A method of sequentially operating an apparatus for printing colored transparencies having light-responsive and control means for individually terminating the exposures to the printing light of each of the primary colors when predetermined quantities thereof have passed through said transparencies, said method comprising the steps of selecting a portion of said transparencies having an arbitrary combination of said primary Colors, adjusting auxiliary sources of light of said primary colors to the same combination as in said selected portion, and utilizing said adjusted auxiliary sources of light of said primary colors to actuate said light-responsive and control means to individually terminate said exposures to said light of said primary colors whereby said transparencies are sequentially measured and printed.
Claim 2
Independent Claim
117 words
A method of sequentially operating an apparatus for printing colored transparencies having light-responsive and control means for individually terminating the exposures to the printing light of each of the primary colors when predetermined quantities thereof have passed through said transparencies, said method comprising the steps of selecting a portion of said transparencies having an arbitrary combination of said primary Colors, adjusting auxiliary sources of light of said primary colors to the same combination as in said selected portion, and utilizing said adjusted auxiliary sources of light of said primary colors to actuate said light-responsive and control means to individually terminate said exposures to said light of said primary colors whereby said transparencies are sequentially measured and printed.
Claim 3
Dependent Claim
35 words
A method as set forth in claim 1 wherein the intensity of each of said auxiliary sources of light of said primary colors is separately adjusted in accordance with its content in said selected portion.
Claim 4
Dependent Claim
41 words
A method as set forth in claim 2 wherein the overall intensity of said auxiliary sources of light of said primary colors is adjusted substantially in accordance with the overall intensity of said printing light transmitted through each of said transparencies.
Claim 5
Dependent Claim
31 words
A method as set forth in claim 3 wherein said overall intensity is substantially adjusted in accordance with the light of one of said primary colors issuing from said auxiliary sources.
Claim 6
Dependent Claim
28 words
A method as set forth in claim 3 wherein said overall intensity is adjusted by adjusting a diaphragm disposed in the paths of light from said auxiliary sources.
Claim 7
Independent Claim
158 words
An apparatus for simultaneously and sequentially measuring and printing colored transparencies comprising exposure means for projecting printing light of the primary colors through said transparencies, light-responsive and control means for terminating the exposures to the light of each of said primary colors when predetermined quantities thereof have passed through said transparencies, analyzing means for measuring the relative intensities of the light of each of said three primary colors in a selected portion of said transparency, auxiliary sources of said light of each of said primary colors, varying means connected to said auxiliary sources for adjusting the relative intensities of said light of each of said primary colors in accordance with said relative intensities determined by said analyzing means, and light-channeling means for directing either a portion of said printing light passing through said transparencies or the adjusted light from said auxiliary sources upon said light-responsive and control means whereby simultaneous or sequential measuring and printing are alternatively accomplished.
Claim 8
Independent Claim
158 words
An apparatus for simultaneously and sequentially measuring and printing colored transparencies comprising exposure means for projecting printing light of the primary colors through said transparencies, light-responsive and control means for terminating the exposures to the light of each of said primary colors when predetermined quantities thereof have passed through said transparencies, analyzing means for measuring the relative intensities of the light of each of said three primary colors in a selected portion of said transparency, auxiliary sources of said light of each of said primary colors, varying means connected to said auxiliary sources for adjusting the relative intensities of said light of each of said primary colors in accordance with said relative intensities determined by said analyzing means, and light-channeling means for directing either a portion of said printing light passing through said transparencies or the adjusted light from said auxiliary sources upon said light-responsive and control means whereby simultaneous or sequential measuring and printing are alternatively accomplished.
Claim 9
Dependent Claim
28 words
An apparatus as set forth in claim 6 wherein said analyzing means includes sampling means for abstracting and projecting the light from said selected portion of said transparency.
Claim 10
Dependent Claim
55 words
An apparatus as set forth in claim 6 wherein said analyzing means includes light-evaluating means for comparing said light of each of said primary colors derived from said selected portion of said transparencies with that from said auxiliary sources whereby said adjustment of said light of said primary colors from said auxiliary sources is guided.
Claim 11
Dependent Claim
27 words
An apparatus as set forth in claim 6 wherein said light-responsive and control means and said analyzing means include light-measuring means for each of said primary colors.
Claim 12
Dependent Claim
57 words
An apparatus as set forth in claim 6 wherein said movable means connects said light-channeling means to said apparatus for alternatively interposing said light-channeling means in said light passing through said transparencies for simultaneously measuring and printing and for disposing said light-channeling means in the path of light from said auxiliary sources during sequential printing after measuring.
Claim 13
Dependent Claim
16 words
An apparatus as set forth in claim 10 wherein said light-channeling means comprises a semitransparent mirror.
Claim 14
Dependent Claim
15 words
An apparatus as set forth in claim 11 wherein said movable means comprises slide means.
Claim 15
Dependent Claim
40 words
An apparatus as set forth in claim 10 wherein said light-responsive and control means includes photosensitive means, said semitransparent reflector and said photosensitive means being mounted upon a sensing head, and slide means connects said sensing head to said apparatus.
Claim 16
Dependent Claim
78 words
An apparatus as set forth in claim 13 wherein said apparatus incluDes a focusing lens, said focusing lens being mounted upon a carrier, said analyzing means including sampling means for abstracting and projecting said selected portion of said light, said sampling means also being mounted upon said carrier, and said slide means being constructed and arranged to permit said semitransparent reflector to be alternatively disposed in the path of light from said focusing lens or said sampling means.
Claim 17
Dependent Claim
45 words
An apparatus as set forth in claim 14 wherein said auxiliary sources of light are mounted upon said carrier, and auxiliary light-channeling means is mounted on said carrier for directing light from said sampling means and said auxiliary sources of light upon said semitransparent reflector.
Claim 18
Dependent Claim
86 words
An apparatus as set forth in claim 15 wherein said carrier includes a chamber, said auxiliary sources of light being mounted at one end of said chamber, a portion of said sampling means and said auxiliary light-channeling means being mounted at another end of said chamber, said focusing lens being mounted at an intermediate portion of said chamber, and a pair of apertures in said chamber associated with said focusing lens and said auxiliary light-channeling means where through light is alternatively directed to said semitransparent reflector.
Claim 19
Dependent Claim
37 words
An apparatus as set forth in claim 16 wherein said auxiliary light-channeling means comprises an apertured mirror, said sampling and abstracting means comprise light-conducting fiber, and one end of said light-conducting fiber passing through said apertured reflector.
Claim 20
Dependent Claim
47 words
An apparatus as set forth in claim 17 wherein said apparatus includes a transparency holder, and adjustable support means movably mounts the other end of said light-conducting fiber adjacent said transparency holder for projecting light from said selected portion of said transparency to said auxiliary light-channeling means.
Claim 21
Dependent Claim
43 words
An apparatus as set forth in claim 17 wherein said adjustable diaphragm means is mounted in said chamber between said auxiliary sources of light and auxiliary light-channeling means whereby the overall intensity of the light from said auxiliary sources of light is adjusted.
Claim 22
Dependent Claim
31 words
An apparatus as set forth in claim 18 wherein said semitransparent reflector is mounted at one end of said sensing head, and said photosensitive means is mounted within said sensing head.
References Cited (Backward Citations)
US3322025A
Cited
US3418048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |