US4833532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color copier for making a positive color copy from a color negative film including means for indicating the type of film and means for removing the orange mask component of the indicated film from three color component signals used to make the copy
Assignee: Canon Inc
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Filing: 1987-06-08
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Granted: 1989-05-23
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Expires: 2007-06-08
Abstract
Abstract A color image processing apparatus including a read-out device for reading a color negative film to produce three color component signals, one component for each of three formation colors. A generation device generates a signal indicating the type or condition of the color negative film read by the read-out device. A gamma correction mechanism corrects the gamma characteristics of the three color component signals and removes an orange mask component corresponding to the indication signal generated by the generating device from the three color component signals. A color masking processing system derives a recording color signal for each formation color from the three color component signals from which the orange mask component has been removed. A color image forming device sequentially forms a color image for each color from each of the recording signals. Also provided is a control mechanism for enabling the read-out device, the gamma correction device, and the color masking processing system a predetermined number of times corresponding to the number of formation colors.
Inventors
- 👤 Shunichi Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6094
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
172 words
A color image processing apparatus comprising: read-out means for reading a color negative film to produce three color component signals, one color component signal for each of three formation colors; generation means for generating an indication signal indicating a type or condition of the color negative film read by said read-out means; gamma correction means for correcting gamma characteristics of the three color component signals and for removing an orange mask component of the color negative film from the three color component signals in accordance with the indication signal generated by said generation means; color masking processing means for deriving a recording color signal for each formation color from the three gamma-corrected color component signals from which the orange mask component has been removed; color image forming means for sequentially forming color images of the formation colors from the corresponding color signals; and control means for enabling said read-out means, said gamma correction means and said color masking processing means a predetermined number of times corresponding to the number of formation colors.
Claim 2
Dependent Claim
172 words
A color image processing apparatus comprising: read-out means for reading a color negative film to produce three color component signals, one color component signal for each of three formation colors; generation means for generating an indication signal indicating a type or condition of the color negative film read by said read-out means; gamma correction means for correcting gamma characteristics of the three color component signals and for removing an orange mask component of the color negative film from the three color component signals in accordance with the indication signal generated by said generation means; color masking processing means for deriving a recording color signal for each formation color from the three gamma-corrected color component signals from which the orange mask component has been removed; color image forming means for sequentially forming color images of the formation colors from the corresponding color signals; and control means for enabling said read-out means, said gamma correction means and said color masking processing means a predetermined number of times corresponding to the number of formation colors.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein said color image forming means is a transfer type of color printer.
Claim 4
Dependent Claim
42 words
An apparatus according to claim 2, wherein said color printer is a type which sequentially forms latent images corresponding to a plurality of formation colors on a photoconductive surface and develops the latent images with respective toners corresponding to the formation colors.
Claim 5
Dependent Claim
35 words
An apparatus according to claim 1, wherein said read-out means includes: support means for supporting the color negative film; and conversion means for converting an image on the color negative film into an electrical signal.
Claim 6
Dependent Claim
45 words
An apparatus according to claim 1, wherein said generation means includes: manually operable means for setting the type or condition of the color negative film; and a generation unit for generating the indication signal in accordance with the setting operation of said manually operable means.
Claim 7
Dependent Claim
28 words
An apparatus according to claim 1, wherein said gamma correction means includes a memory storing tables for performing the correcting and removing operations on the color component signals.
Claim 8
Dependent Claim
83 words
A color image processing apparatus comprising: read-out means for reading a color negative film to produce three color component signals; removal means for removing an orange mask component of the color negative film from the three color component signals; generation means for generating an indication signal indicating a type or condition of the color negative film read by said read-out means; and control means for controlling removal characteristics of said removal means in response to the indication signal generated by said generation means.
Claim 9
Dependent Claim
83 words
A color image processing apparatus comprising: read-out means for reading a color negative film to produce three color component signals; removal means for removing an orange mask component of the color negative film from the three color component signals; generation means for generating an indication signal indicating a type or condition of the color negative film read by said read-out means; and control means for controlling removal characteristics of said removal means in response to the indication signal generated by said generation means.
Claim 10
Dependent Claim
38 words
A color image processing apparatus according to claim 7, wherein said read-out means includes: support means for supporting the color negative film; and conversion means for converting an image on the color negative film into an electrical signal.
Claim 11
Dependent Claim
27 words
A color image processing apparatus according to claim 7, wherein said removal means includes a memory storing tables provided for each of the three color component signals.
Claim 12
Dependent Claim
47 words
A color image processing apparatus according to claim 9, wherein the number of tables provided for each of the three color component signals is equal to the number of kinds or conditions of the color negative film for which said generation means can generate an indication signal.
Claim 13
Dependent Claim
48 words
A color image processing apparatus according to claim 7, wherein said generation means includes: manually operable means for setting the type or condition of the color negative film; and a generation unit for generating the indication signal in accordance with the setting operation of said manually operable means.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |