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Patent US4369461A successfully refreshed from Google Patents.
US4369461A
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Method and apparatus for forming images
Assignee: Canon Inc
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Filing: 1980-10-28
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Granted: 1983-01-18
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Expires: 2000-10-28
Abstract
Abstract Method and apparatus for forming images are characterized in that an original document is read while discriminating between the presence and absence of colored portion, the read signal relating to the portion where color is detected is replaced by a predetermined pattern generator signal to form an image forming signal whereas the read signal relating to the portion where color is not detected is used as an image forming signal as it is and an image of the original is formed in accordance with these image forming signals.
Inventors
- 👤 Yasuyuki Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:57
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40012
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
75 words
A method of forming images comprising the steps of: reading an original to generate a read signal; discriminating between the presence and absence of a portion having a predetermined color in the original; in accordance with said discriminating step, replacing the read signal for the portion of the original having predetermined color with a predetermined pattern signal; and forming an image of the original in accordance with the read signal and the predetermined pattern signal.
Claim 2
Independent Claim
75 words
A method of forming images comprising the steps of: reading an original to generate a read signal; discriminating between the presence and absence of a portion having a predetermined color in the original; in accordance with said discriminating step, replacing the read signal for the portion of the original having predetermined color with a predetermined pattern signal; and forming an image of the original in accordance with the read signal and the predetermined pattern signal.
Claim 3
Independent Claim
75 words
A method of forming images comprising the steps of: reading an original to generate a read signal; discriminating between the presence and absence of portions having predetermined colors in the original; in accordance with said discriminating step, replacing the read signal for said portions of the original having predetermined colors with respective and different predetermined pattern signals; and forming an image of the original in accordance with the read signal and the predetermined pattern signals.
Claim 4
Independent Claim
75 words
A method of forming images comprising the steps of: reading an original to generate a read signal; discriminating between the presence and absence of portions having predetermined colors in the original; in accordance with said discriminating step, replacing the read signal for said portions of the original having predetermined colors with respective and different predetermined pattern signals; and forming an image of the original in accordance with the read signal and the predetermined pattern signals.
Claim 5
Dependent Claim
20 words
A method according to claim 2, wherein the predetermined pattern signals are respectively generated by pattern generators for different colors.
Claim 6
Dependent Claim
42 words
An image forming method according to claim 3 wherein the images formed in accordance with two kinds of predetermined pattern signals generated by different pattern signal generators and corresponding to different predetermined colors are inverted images one with respect to the other.
Claim 7
Dependent Claim
40 words
An image forming method according to claim 3 wherein respective predetermined pattern signals corresponding to respective predetermined colors that, when combined together, yield black, produce patterns in said image forming step that, when combined together form an even black image.
Claim 8
Dependent Claim
66 words
Apparatus for forming images comprising: means for reading an original while discriminating between presence and absence of a colored portion in said original; means for generating a predetermined pattern signal; and means for putting out the read signal derived from said reading means while replacing the read signal corresponding to the colored portion of a predetermined color with the signal generated from said pattern generating means.
Claim 9
Dependent Claim
66 words
Apparatus for forming images comprising: means for reading an original while discriminating between presence and absence of a colored portion in said original; means for generating a predetermined pattern signal; and means for putting out the read signal derived from said reading means while replacing the read signal corresponding to the colored portion of a predetermined color with the signal generated from said pattern generating means.
Claim 10
Dependent Claim
90 words
Apparatus for forming images comprising: a plural number of reading means for reading different color components respectively; means for generating a plural number of pattern signals; output means for putting out a read signal as an image forming signal when the outputs of said plural number of reading means are all the same signal; and output means for putting out the predetermined pattern signals generated by said pattern signal generating means as image forming signals when the outputs of said plural number of reading means are different from each other.
Claim 11
Dependent Claim
90 words
Apparatus for forming images comprising: a plural number of reading means for reading different color components respectively; means for generating a plural number of pattern signals; output means for putting out a read signal as an image forming signal when the outputs of said plural number of reading means are all the same signal; and output means for putting out the predetermined pattern signals generated by said pattern signal generating means as image forming signals when the outputs of said plural number of reading means are different from each other.
Claim 12
Dependent Claim
86 words
Apparatus for forming images comprising: a plural number of reading means for reading different color components respectively; means for generating a pattern signal; means for inverting the pattern signal generated by said pattern signal generating means; and output means for putting out a composite signal resulting from the output signal from said pattern signal generating means and the output signal from said inverting means as an image forming signal when the outputs from said plural number of reading means are all the same image read signal.
Claim 13
Dependent Claim
86 words
Apparatus for forming images comprising: a plural number of reading means for reading different color components respectively; means for generating a pattern signal; means for inverting the pattern signal generated by said pattern signal generating means; and output means for putting out a composite signal resulting from the output signal from said pattern signal generating means and the output signal from said inverting means as an image forming signal when the outputs from said plural number of reading means are all the same image read signal.
Claim 14
Dependent Claim
53 words
Apparatus as set forth in claim 8, which further comprises means for putting out either one of the output signals coming from said pattern signal generating means and from said inverting means as an image forming output signal when either one of said plural number of reading means puts out a read signal.
References Cited (Backward Citations)
US3942154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |