Patent US2467357A successfully refreshed from Google Patents.
Patent US4821079A successfully refreshed from Google Patents.
US4821079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test Photographic image easel
Assignee: Individual
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Filing: 1987-10-23
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Granted: 1989-04-11
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Expires: 2007-10-23
Abstract
Abstract The present invention relates to a device designed to enable one to make a series of photographic test prints of the same image or the same portion of an image on a single piece of photographic paper so that the test prints may be compared with one another to decide which combination of parameters will be used in the developing process. The parameters which may be selectively altered include density, color balance, lens aperture, filtration and length of exposure, among others. The invention utilizes a fixed base and a turntable and includes structure allowing the photographic paper to be rotated with respect to a fixed aperture fixedly aligned with the image of the negative or slide which is to be reproduced. Successive rotations of the photographic paper with respect to the aperture wherein changes in the above described parameters have been made before each exposure will result in a single piece of photographic paper having developed thereon the same portion of a photograph developed utilizing differing parameters. In this way, the optimum parameters for development may be determined.
Inventors
- 👤 Darrel K. Yoder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:57
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/582
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
203 words
A test photographic image easel comprising: (a) a stationary base having a turntable rotatably mounted thereon about an axis of rotation; (b) said turntable including frame means for releasably mounting a piece of photographic paper thereon; (c) a mask mounted on said base in overlying relation to said turntable and including a slot selectively closable by a cover said slot having a radially inner terminus spaced from said axis; (d) said easel being adapted to be placed in adjacency to an exposure mechanism with said base and mask being maintained in stationary relation to said exposure mechanism and with said turntable being selectively rotatable with respect to said base and mask to index different portions of said photographic paper into alignment with said slot; and (e) a data imprinting device on said mask between said axis and said radially inner terminus of said slot and being programmable to print information on said photographic paper related to particular parameters of exposure of said photographic paper, whereby when each said different portion of said photographic paper is indexed into alignment with said slot, said data imprinting device may be activated to print thereon the particular parameters of the exposure thereof for later review and comparison.
Claim 2
Dependent Claim
203 words
A test photographic image easel comprising: (a) a stationary base having a turntable rotatably mounted thereon about an axis of rotation; (b) said turntable including frame means for releasably mounting a piece of photographic paper thereon; (c) a mask mounted on said base in overlying relation to said turntable and including a slot selectively closable by a cover said slot having a radially inner terminus spaced from said axis; (d) said easel being adapted to be placed in adjacency to an exposure mechanism with said base and mask being maintained in stationary relation to said exposure mechanism and with said turntable being selectively rotatable with respect to said base and mask to index different portions of said photographic paper into alignment with said slot; and (e) a data imprinting device on said mask between said axis and said radially inner terminus of said slot and being programmable to print information on said photographic paper related to particular parameters of exposure of said photographic paper, whereby when each said different portion of said photographic paper is indexed into alignment with said slot, said data imprinting device may be activated to print thereon the particular parameters of the exposure thereof for later review and comparison.
Claim 3
Dependent Claim
41 words
The invention of claim 1, wherein said cover is attached to said mask by a hinge allowing pivotable movements of said cover with respect to said mask between a first position covering said slot and a second position opening said slot.
Claim 4
Dependent Claim
40 words
The invention of claim 1, wherein said turntable has a notched periphery and said base has a detent mechanism mounted thereon and adapted to interact with said notched periphery to constrain rotation of said turntable in one direction of rotation.
Claim 5
Dependent Claim
34 words
The invention of claim 1, wherein said mask is of substantially circular configuration and includes two substantially semi-circular portions mutually pivotable about a hinge mechanism, said slot being located on one of said portions.
Claim 6
Independent Claim
135 words
A method of making a series of photographic test prints including the steps of: (a) providing a mask device having a slot therein at a fixed location; (b) providing a turntable rotatable with respect to said fixed slot; (c) mounting a piece of photographic paper on said turntable; (d) exposing a portion of said photographic paper to a particular portion of an image through said slot under first parameters of exposure; (e) rotating said turntable with said photographic paper attached thereto align a further portion of said photographic paper with said slot; (f) exposing said particular portion of said image to said further portion of said photographic paper through said slot under second parameters of exposure; and (g) imprinting data on each said portion of said photographic paper regarding the said parameters of exposure thereof.
Claim 7
Independent Claim
135 words
A method of making a series of photographic test prints including the steps of: (a) providing a mask device having a slot therein at a fixed location; (b) providing a turntable rotatable with respect to said fixed slot; (c) mounting a piece of photographic paper on said turntable; (d) exposing a portion of said photographic paper to a particular portion of an image through said slot under first parameters of exposure; (e) rotating said turntable with said photographic paper attached thereto align a further portion of said photographic paper with said slot; (f) exposing said particular portion of said image to said further portion of said photographic paper through said slot under second parameters of exposure; and (g) imprinting data on each said portion of said photographic paper regarding the said parameters of exposure thereof.
Claim 8
Dependent Claim
16 words
The method of claim 5, further including the step of maintaining darkness during said rotating step.
Claim 9
Dependent Claim
23 words
The method of claim 5, further wherein said step of imprinting data on said photographic paper is carried out after said rotating step.
Claim 10
Dependent Claim
17 words
The method of claim 5, further including the step of closing said slot after each exposing step.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |