US4958219A
Expired / Lapsed
US
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Color image forming apparatus
Assignee: Canon Inc
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Filing: 1989-01-18
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Granted: 1990-09-18
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Expires: 2009-01-18
Abstract
Abstract A color image forming apparatus provided with an input terminal for plural input color component signals, an independent input terminal for an output color component control signal, a processing circuit for processing the input color component signal to obtain plural output color component signals specific to the apparatus, and image forming means for forming each color component image according to the value of each output color component signal, in which the processing circuit is capable of controlling the calculation of output color component control signals according to the value of the output color component control signal. In one illustrated embodiment, the output color component signal is adapted to maintain a black output color component at a predetermined value.
Inventors
- 👤 Toshihiro Kadowaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:50
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6083; H04N1/6091; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133703; G02F1/133711; H04N1/603; H04N1/6072; G02F1/0126; G02F1/133362; G02F2202/00; G02F2202/14
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
91 words
A color image forming apparatus comprising: (a) input means for entering plural input color component signals and an output color component control signal, wherein said output color component control signal is input independently of said input color component signals; (b) process means for processing said plural input color component signals for obtaining plural output color component signals for obtaining plural output color component signals specific to the apparatus; and (c) control means for controlling the output color component signals from said process means, according to said output color component control signal.
Claim 2
Dependent Claim
91 words
A color image forming apparatus comprising: (a) input means for entering plural input color component signals and an output color component control signal, wherein said output color component control signal is input independently of said input color component signals; (b) process means for processing said plural input color component signals for obtaining plural output color component signals for obtaining plural output color component signals specific to the apparatus; and (c) control means for controlling the output color component signals from said process means, according to said output color component control signal.
Claim 3
Dependent Claim
25 words
An apparatus according to claim 1, further comprising: (a) image forming means for forming color component images respectively according to said output color component signals.
Claim 4
Dependent Claim
27 words
An apparatus according to claim 1, wherein said input means enters said plural input color component signals and said output color component control signal in parallel manner.
Claim 5
Dependent Claim
16 words
An apparatus according to claim 1, wherein said input color components are three primary color components.
Claim 6
Dependent Claim
16 words
An apparatus according to claim 1, wherein said output color component signals are complementary color components.
Claim 7
Dependent Claim
18 words
An apparatus according to claim 4, wherein said three primary color components are red, green and blue components.
Claim 8
Dependent Claim
17 words
An apparatus according to claim 5, wherein said complementary color components are yellow, magenta and cyan components.
Claim 9
Dependent Claim
27 words
An apparatus according to claim 1, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components.
Claim 10
Dependent Claim
37 words
An apparatus according to claim 8, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components and to maintain other output components at a predetermined value.
Claim 11
Dependent Claim
25 words
An apparatus according to claim 1, wherein said output color component control signal is adapted to maintain predetermined output color components at a predetermined value.
Claim 12
Dependent Claim
21 words
An apparatus according to claim 2, wherein said image forming means is adapted to effect image formation by an electrophotographic process.
Claim 13
Dependent Claim
15 words
An apparatus according to claim 8, wherein said predetermined components are those other than black.
Claim 14
Dependent Claim
13 words
An apparatus according to claim 10, wherein said predetermined component is black component.
Claim 15
Dependent Claim
14 words
An apparatus according to claim 1, wherein said process means comprises a masking circuit.
Claim 16
Dependent Claim
75 words
An interface adapted for use in a color image forming apparatus provided with process means for processing plural input color component signals to obtain output color component signals, comprising: (a) first input means for entering said plural input color component signals; and (b) second input means for entering an output color control signal for controlling the output of said output color component signals; wherein said first input means is independent of said second input means.
Claim 17
Dependent Claim
75 words
An interface adapted for use in a color image forming apparatus provided with process means for processing plural input color component signals to obtain output color component signals, comprising: (a) first input means for entering said plural input color component signals; and (b) second input means for entering an output color control signal for controlling the output of said output color component signals; wherein said first input means is independent of said second input means.
Claim 18
Dependent Claim
19 words
An interface according to claim 15, wherein said first and second input means enter said signals in parallel manner.
Claim 19
Dependent Claim
16 words
An interface according to claim 15, wherein said input color components are three primary color components.
Claim 20
Dependent Claim
16 words
An interface according to claim 15, wherein said output color component signals are complementary color components.
Claim 21
Dependent Claim
18 words
An interface according to claim 17, wherein said three primary color components are red, green and blue components.
Claim 22
Dependent Claim
17 words
An interface according to claim 18, wherein said complementary color components are yellow, magenta and cyan components.
Claim 23
Dependent Claim
27 words
An interface according to claim 15, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components.
Claim 24
Dependent Claim
37 words
An interface according to claim 21, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components and to maintain other output components at a predetermined value.
Claim 25
Dependent Claim
25 words
An interface according to claim 15, wherein said output color component control signal is adapted to maintain predetermined output color components at a predetermined value.
Claim 26
Dependent Claim
15 words
An interface according to claim 21, wherein said predetermined components are those other than black.
Claim 27
Dependent Claim
13 words
An interface according to claim 23, wherein said predetermined component is black component.
Claim 28
Dependent Claim
96 words
A color image forming apparatus comprising: (a) input means for entering plural input color component signals and an output color component control signal; (b) process means for processing said plural input color component signals for obtaining plural output color component signals specific to the apparatus; and (c) control means for controlling the output color component signals from said process means, according to said output color component control signal; wherein said input means inputs said input color component signal and said output color component control signal by executing a communication including a command with an auxiliary apparatus.
Claim 29
Dependent Claim
96 words
A color image forming apparatus comprising: (a) input means for entering plural input color component signals and an output color component control signal; (b) process means for processing said plural input color component signals for obtaining plural output color component signals specific to the apparatus; and (c) control means for controlling the output color component signals from said process means, according to said output color component control signal; wherein said input means inputs said input color component signal and said output color component control signal by executing a communication including a command with an auxiliary apparatus.
Claim 30
Dependent Claim
25 words
An apparatus according to claim 26, further comprising: (a) image forming means for forming color component images respectively according to said output color component signals.
Claim 31
Dependent Claim
27 words
An apparatus according to claim 26, wherein said input means enters said plural input color component signals and said output color component control signal in parallel manner.
Claim 32
Dependent Claim
16 words
An apparatus according to claim 26, wherein said input color components are three primary color components.
Claim 33
Dependent Claim
16 words
An apparatus according to claim 26, wherein said output color component signals are complementary color components.
Claim 34
Dependent Claim
18 words
An apparatus according to claim 29, wherein said three primary color components are red, green and blue components.
Claim 35
Dependent Claim
17 words
An apparatus according to claim 30, wherein said complementary color components are yellow, magenta and cyan components.
Claim 36
Dependent Claim
27 words
An apparatus according to claim 26, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components.
Claim 37
Dependent Claim
37 words
An apparatus according to claim 26, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components and to maintain other output components at a predetermined value.
Claim 38
Dependent Claim
25 words
An apparatus according to claim 26, wherein said output color component control signal is adapted to maintain predetermined output color components at a predetermined value.
Claim 39
Dependent Claim
21 words
An apparatus according to claim 26, wherein said image forming means is adopted to effect image formation by an electrophotographic process.
Claim 40
Dependent Claim
15 words
An apparatus according to claim 26, wherein said predetermined components are those other than black.
Claim 41
Dependent Claim
13 words
An apparatus according to claim 26, wherein said predetermined component in black component.
Claim 42
Dependent Claim
14 words
An apparatus according to claim 26, wherein said process means comprises a masking circuit.
Claim 43
Dependent Claim
100 words
An interface adapted for use in a color image forming apparatus provided with process means for processing plural input color component signals to obtain output color component signals, comprising: (a) first input means for entering said plural input color component signals; and (b) second input means for entering an output color control signal for controlling the output of said output color component signals; wherein each of said first input means and said second input means inputs said plural input color component signals and said output color component control signal by executing a communication including a command with an auxiliary apparatus.
Claim 44
Dependent Claim
100 words
An interface adapted for use in a color image forming apparatus provided with process means for processing plural input color component signals to obtain output color component signals, comprising: (a) first input means for entering said plural input color component signals; and (b) second input means for entering an output color control signal for controlling the output of said output color component signals; wherein each of said first input means and said second input means inputs said plural input color component signals and said output color component control signal by executing a communication including a command with an auxiliary apparatus.
Claim 45
Dependent Claim
19 words
An interface according to claim 40, wherein said first and second input means enter said signals in parallel manner.
Claim 46
Dependent Claim
16 words
An interface according to claim 40 wherein said input color components are three primary color components.
Claim 47
Dependent Claim
16 words
An interface according to claim 40, wherein said output color component signals are complementary color components.
Claim 48
Dependent Claim
18 words
An interface according to claim 42, wherein said three primary color components are red, green and blue components.
Claim 49
Dependent Claim
17 words
An interface according to claim 43, wherein said complementary color components are yellow, magenta and cyan components.
Claim 50
Dependent Claim
27 words
An interface according to claim 40, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components.
Claim 51
Dependent Claim
37 words
An interface according to claim 40, wherein said output color component control signal is adapted to prohibit the output of predetermined components in the output color components and to maintain other output components at a predetermined value.
Claim 52
Dependent Claim
25 words
An interface according to claim 40, wherein said output color component control signal is adapted to maintain predetermined output color components at a predetermined value.
Claim 53
Dependent Claim
15 words
An interface according to claim 40, wherein said predetermined components are those other than black.
Claim 54
Dependent Claim
13 words
An interface according to claim 40, wherein said predetermined component is black component.
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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) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |