US5097342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image recording apparatus with correction of recording signal for variations in apparatus function and film characteristics
Assignee: Fujifilm Holdings Corp
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Filing: 1990-04-19
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Granted: 1992-03-17
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Expires: 2010-04-19
Abstract
Abstract An image recording apparatus for recording an image on an image recording medium includes a digital-to-analog converter for converting digital image data into analog image data, and a multiplier for multiplying the analog image data from the digital-to-analog converter by a signal for correcting for variations in the image recording apparatus. The density of gradations of the image to be recorded is controlled with an output signal from the multiplier. The resolution of the digital-to-analog converter ranges from 8 to 12 bits. The apparatus comprises a multiplying digital-to-analog converter, and the signal for correcting for variations is represented by digital data.
Inventors
- 👤 Toshitaka Agano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:01
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
An image recording apparatus for recording an image on an image recording medium, comprising: a digital-to-analog converter for converting digital image data into analog image data, said digital-to-analog converter having a resolution corresponding to a predetermined range of image gradations; a multiplier for multiplying the analog image data provided by said digital-to-analog converter with a correction signal to compensate for variations in a recorded image due to film sensitivity characteristics, automatic developing machine characteristics, optical system transmittance characteristics, laser power fluctuations, and the like, to thereby generate an output signal; and means for controlling the density of gradiations of said image to be recorded based on said output signal from said multiplier.
Claim 2
Dependent Claim
112 words
An image recording apparatus for recording an image on an image recording medium, comprising: a digital-to-analog converter for converting digital image data into analog image data, said digital-to-analog converter having a resolution corresponding to a predetermined range of image gradations; a multiplier for multiplying the analog image data provided by said digital-to-analog converter with a correction signal to compensate for variations in a recorded image due to film sensitivity characteristics, automatic developing machine characteristics, optical system transmittance characteristics, laser power fluctuations, and the like, to thereby generate an output signal; and means for controlling the density of gradiations of said image to be recorded based on said output signal from said multiplier.
Claim 3
Dependent Claim
21 words
An image recording apparatus according to claim 1, wherein the resolution of said digital-to-analog converter ranges from 8 to 12 bits.
Claim 4
Dependent Claim
30 words
An image recording apparatus according to claim 1 or 2, wherein said multiplier comprises a multiplying digital-to-analog converter and said signal for correcting for variations is represented by digital data.
Claim 5
Dependent Claim
77 words
An image recording apparatus according to claim 1, further comprising laser beam generating means for generating a laser beam, light modulating means for modulating the intensity of the laser beam with the output signal from said multiplier, a light deflector for deflecting the modulated laser beam to scan a photographic film with the deflected laser beam, and an image developing machine for developing the image which is recorded on said photographic film by said deflected laser beam.
Claim 6
Dependent Claim
77 words
An image recording apparatus according to claim 2, further comprising laser beam generating means for generating a laser beam, light modulating means for modulating the intensity of the laser beam with the output signal from said multiplier, a light deflector for deflecting the modulated laser beam to scan a photographic film with the deflected laser beam, and an image developing machine for developing the image which is recorded on said photograhpic film by said deflected laser beam.
Claim 7
Dependent Claim
77 words
An image recording apparatus according to claim 3, further comprising laser beam generating means for generating a laser beam, light modulating means for modulating the intensity of the laser beam with the output signal from said multiplier, a light deflector for deflecting the modulated laser beam to scan a photographic film with the deflected laser beam, and an image developing machine for developing the image which is recorded on said photographic film by said deflected laser beam.
References Cited (Backward Citations)
US4472707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |