US5576128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color negative films with low mid-scale contrast for telecine transfer applications
Assignee: Eastman Kodak Co
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Filing: 1994-12-05
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Granted: 1996-11-19
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Expires: 2014-12-05
Abstract
Abstract A color negative photographic film with at least one color record thereof having a mid-scale contrast less than or equal to 0.45, wherein the mid-scale contrast for the color record is defined as the slope of a straight line connecting a point C and and a point D on the characteristic curve of density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively. Use of such a color negative film is particularly advantageous in making telecine transfers.
Inventors
- 👤 John T. Keech
- 👤 John C. Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:30
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/11; G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
142 words
An unexposed silver halide color negative photographic film comprising red, green and blue color sensitive silver halide records, wherein at least two of the color records has a mid-scale contrasts less than or equal to 0.40, wherein the mid-scale contrast for a color record is defined as the slope of a straight line connecting a point C and a point D on the characteristic curve of Status M density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively.
Claim 2
Dependent Claim
142 words
An unexposed silver halide color negative photographic film comprising red, green and blue color sensitive silver halide records, wherein at least two of the color records has a mid-scale contrasts less than or equal to 0.40, wherein the mid-scale contrast for a color record is defined as the slope of a straight line connecting a point C and a point D on the characteristic curve of Status M density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively.
Claim 3
Dependent Claim
30 words
An unexposed color negative photographic film according to claim 1 wherein each of the red, green and blue color records has a mid-scale contrast less than or equal to 0.45.
Claim 4
Dependent Claim
25 words
An unexposed color negative photographic film according to claim 1 wherein the blue color record has a mid-scale contrast less than or equal to 0.45.
Claim 5
Dependent Claim
25 words
An unexposed color negative photographic film according to claim 3 wherein the blue color record has a mid-scale contrast less than or equal to 0.40.
Claim 6
Dependent Claim
75 words
A process of forming a telecine transfer image comprising exposing a film according to claim 1, processing the exposed film to form a developed image, and converting the developed image into video signals representative of the developed image with a telecine transfer device, wherein the contrast of the video signals representative of the color records of the image having a mid-scale contrast less than or equal to 0.45 are raised in the telecine transfer device.
Claim 7
Dependent Claim
29 words
A process according to claim 5 wherein each of the red, green and blue color records of the film has a mid-scale contrast less than or equal to 0.45.
Claim 8
Dependent Claim
24 words
A process according to claim 5 wherein the blue color record of the film has a mid-scale contrast less than or equal to 0.45.
Claim 9
Dependent Claim
21 words
A process according to claim 7 wherein the blue color record has a mid-scale contrast less than or equal to 0.40.
Claim 10
Dependent Claim
144 words
An unexposed silver halide color negative photographic film comprising red, green and blue color sensitive silver halide records, wherein at least one of the color records has a mid have mid-scale contrasts less than or equal to 0.40, wherein the mid-scale contrast for a color record is defined as the slope of a straight line connecting a point C and a point D on the characteristic curve of Status M density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively.
Claim 11
Dependent Claim
144 words
An unexposed silver halide color negative photographic film comprising red, green and blue color sensitive silver halide records, wherein at least one of the color records has a mid have mid-scale contrasts less than or equal to 0.40, wherein the mid-scale contrast for a color record is defined as the slope of a straight line connecting a point C and a point D on the characteristic curve of Status M density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively.
Claim 12
Dependent Claim
28 words
An unexposed color negative photographic film according to claim 9 wherein at least two of the color records has a mid-scale contrast less than or equal to 0.45.
Claim 13
Dependent Claim
30 words
An unexposed color negative photographic film according to claim 9 wherein each of the red, green and blue color records has a mid-scale contrast less than or equal to 0.45.
Claim 14
Dependent Claim
25 words
An unexposed color negative photographic film according to claim 9 wherein the blue color record has a mid-scale contrast less than or equal to 0.45.
Claim 15
Dependent Claim
25 words
An unexposed color negative photographic film according to claim 9 wherein the blue color record has a mid-scale contrast less than or equal to 0.40.
Claim 16
Dependent Claim
75 words
A process of forming a telecine transfer image comprising exposing a film according to claim 9, processing the exposed film to form a developed image, and converting the developed image into video signals representative of the developed image with a telecine transfer device, wherein the contrast of the video signals representative of the dolor record of the image having a mid-scale contrast less than or equal to 0.40 is raised in the telecine transfer device.
Claim 17
Dependent Claim
26 words
A process according to claim 14 wherein at least two of the color records of the film have mid-scale contrasts less than or equal to 0.45.
Claim 18
Dependent Claim
29 words
A process according to claim 14 wherein each of the red, green and blue color records of the film have a mid-scale contrasts less than or equal to 0.45.
Claim 19
Dependent Claim
24 words
A process according to claim 14 wherein the blue color record of the film has a mid-scale contrast less than or equal to 0.45.
Claim 20
Dependent Claim
24 words
A process according to claim 14 wherein the blue color record of the film has a mid-scale contrast less than or equal to 0.40.
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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) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |