US6020976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shuttle type recording apparatus
Assignee: Canon Inc
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Filing: 1997-07-28
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Granted: 2000-02-01
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Expires: 2017-07-28
Abstract
Abstract In a recording apparatus for recording on a recording medium by using a plurality of recording heads arrange at a predetermined interval in a scan direction, said recording heads are caused to scan corresponding divided recording areas, said recording heads are caused to make the record by sharing the corresponding divided recording areas when said recording heads are caused to scan the divided recording areas, and record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, are independently corrected for each of the divided recording areas. As a result, the occurrence of the density difference between divided areas is prevented.
Inventors
- 👤 Miyuki Fujita
- 👤 Shinji Kamemitsu
- 👤 Hiromitsu Hirabayashi
- 👤 Makoto Takemura
- 👤 Yuji Akiyama
- 👤 Akitoshi Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:05
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/54; B41J3/543; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; G06K2215/00; G06K2215/111
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
181 words
A recording apparatus for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, each of said recording heads for recording on the recording medium based on a recording signal, said plurality of recording heads capable of recording in at least one common color, said apparatus comprising: scan means for causing said recording heads to scan corresponding divided recording areas; record control means for causing said recording heads to record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording areas, so that the entire recording area is recordable by all of said plurality of recording heads in the common color; and correction means for independently correcting said record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, for each of the divided recording areas, so that output densities recorded by said plurality of recording heads corresponding to the divided recording areas, are equalized.
Claim 2
Dependent Claim
181 words
A recording apparatus for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, each of said recording heads for recording on the recording medium based on a recording signal, said plurality of recording heads capable of recording in at least one common color, said apparatus comprising: scan means for causing said recording heads to scan corresponding divided recording areas; record control means for causing said recording heads to record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording areas, so that the entire recording area is recordable by all of said plurality of recording heads in the common color; and correction means for independently correcting said record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, for each of the divided recording areas, so that output densities recorded by said plurality of recording heads corresponding to the divided recording areas, are equalized.
Claim 3
Dependent Claim
25 words
A recording apparatus according to claim 1, wherein said correction means corrects the record signals based on the output densities of the respective recording heads.
Claim 4
Dependent Claim
34 words
A recording apparatus according to claim 2, wherein said correction means includes a correction table for correcting the record signals, and said correction means uses said correction table for the respective divided recording areas.
Claim 5
Dependent Claim
28 words
A recording apparatus according to claim 3, wherein the divided recording areas include an overlapping recording area to which said recording heads can record in an overlapping manner.
Claim 6
Dependent Claim
41 words
A recording apparatus according to claim 4, wherein said correction means changes stepwise the correction table to be used in the overlapping recording area based on the recording table used in the divided recording areas other than the overlapping recording area.
Claim 7
Dependent Claim
64 words
A recording apparatus according to claim 4, wherein said correction means produces a corrected record signal of the pixel for the overlapping recording area by applying a weight corresponding to the pixel position in a scan direction in the overlapping recording area to the corrected record signal derived from the correction table used in the divided recording areas other than the overlapping recording area.
Claim 8
Dependent Claim
44 words
A recording apparatus according to claim 2, wherein said correction means converts the record signal to a recording head having a high output density to a lower level in order to match the output density to the recording head having the lowest output density.
Claim 9
Dependent Claim
42 words
A recording apparatus according to claim 1, wherein said recording heads record in accordance with binary record signals, and said correction means correct while the record signals are in multi-value state and converts the corrected multi-value record signals to binary record signals.
Claim 10
Dependent Claim
27 words
A recording apparatus according to claim 1, wherein said record control means causes at least one of said recording heads to record by a plurality of dots.
Claim 11
Dependent Claim
21 words
A recording apparatus according to claim 1, wherein said recording heads record in a plurality of colors on said recording medium.
Claim 12
Dependent Claim
17 words
A recording apparatus according to claim 1, wherein said recording heads discharges inks to said recording medium.
Claim 13
Dependent Claim
195 words
In an image recording system having a host computer, display means for displaying a process content of said host computer and a recording head for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction, said recording head comprising: scan means for causing said recording heads to scan corresponding divided recording areas; record control means for causing said recording heads the record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording areas; and correction means for independently correcting record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, for each of the divided recording areas, said correction means correcting the record signals in accordance with respective ones of plural correction tables; wherein said record control means outputs a test pattern comprising an output pattern of one of said plural recording heads and an output pattern of another of said recording heads holding said output pattern therebetween; and wherein said display means displays said test pattern for each of said correction tables.
Claim 14
Dependent Claim
195 words
In an image recording system having a host computer, display means for displaying a process content of said host computer and a recording head for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction, said recording head comprising: scan means for causing said recording heads to scan corresponding divided recording areas; record control means for causing said recording heads the record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording areas; and correction means for independently correcting record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, for each of the divided recording areas, said correction means correcting the record signals in accordance with respective ones of plural correction tables; wherein said record control means outputs a test pattern comprising an output pattern of one of said plural recording heads and an output pattern of another of said recording heads holding said output pattern therebetween; and wherein said display means displays said test pattern for each of said correction tables.
Claim 15
Dependent Claim
173 words
A recording method for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, each of said recording heads for recording on the recording medium based on a recording signal, said plurality of recording heads capable of recording in at least one common color, said method comprising the steps of: causing said recording heads to scan corresponding divided recording areas; causing said recording heads to record by sharing the corresponding recording areas when said scan step causes said recording heads to scan the corresponding areas, so that it the entire recording area is recordable by all of said plural recording heads in the common color; and independently correcting said record signals for each of the divided recording areas, the record signals being inputted to the recording heads for the divided recording areas to be recorded in the shared manner, so that output densities recorded by said Plurality of recording heads corresponding to the divided recording areas are enlarged.
Claim 16
Dependent Claim
173 words
A recording method for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, each of said recording heads for recording on the recording medium based on a recording signal, said plurality of recording heads capable of recording in at least one common color, said method comprising the steps of: causing said recording heads to scan corresponding divided recording areas; causing said recording heads to record by sharing the corresponding recording areas when said scan step causes said recording heads to scan the corresponding areas, so that it the entire recording area is recordable by all of said plural recording heads in the common color; and independently correcting said record signals for each of the divided recording areas, the record signals being inputted to the recording heads for the divided recording areas to be recorded in the shared manner, so that output densities recorded by said Plurality of recording heads corresponding to the divided recording areas are enlarged.
Claim 17
Dependent Claim
37 words
A recording method according to claim 13, further comprising the step of: providing a plurality of correction tables for correcting the record signals; said correction step using the correction tables for each of the divided recording areas.
Claim 18
Dependent Claim
37 words
A recording method according to claim 13, wherein said providing step outputs a test pattern comprising an output pattern of one of said recording head and output patterns of other recording heads holding said output pattern therebetween.
Claim 19
Independent Claim
197 words
A method for transferring a record signal to a recording apparatus for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, each of said recording heads for recording on the recording medium based on a recording signal, said plurality or recording heads capable of recording in at least one common color, said recording apparatus comprising: scan means for causing said recording heads to scan corresponding divided recording areas; and control means for causing said recording heads to record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording area, so that it the entire recording area is recordable by all of said plural recording heads in the common color, said method comprising the steps of: independently correcting the record signal inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, so that output densities recorded by said plurality of recording heads corresponding to the divided recording areas are equalized; and transferring the record signal corrected in said correction step to said recording head.
Claim 20
Independent Claim
197 words
A method for transferring a record signal to a recording apparatus for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, each of said recording heads for recording on the recording medium based on a recording signal, said plurality or recording heads capable of recording in at least one common color, said recording apparatus comprising: scan means for causing said recording heads to scan corresponding divided recording areas; and control means for causing said recording heads to record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording area, so that it the entire recording area is recordable by all of said plural recording heads in the common color, said method comprising the steps of: independently correcting the record signal inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, so that output densities recorded by said plurality of recording heads corresponding to the divided recording areas are equalized; and transferring the record signal corrected in said correction step to said recording head.
Claim 21
Dependent Claim
233 words
In an image recording system having a host computer, display means for displaying a process content of said host computer and a recording head for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, said plurality of recording heads capable of recording in at least one common color, said recording head comprising: scan means for causing said recording heads to scan corresponding divided recording areas; record control means for causing said recording heads the record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording areas, so that the entire recording area is recordable by all of said plurality of recording heads in the common color; and correction means for independently correcting record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, for each of the divided recording areas, said correction means correcting the record signals in accordance with respective ones of plural correction tables; wherein said record control means outputs a test pattern comprising an output pattern of one of said plural recording heads and an output pattern of another of said recording heads holding said output pattern therebetween; and wherein said display means displays said test pattern for each of said correction tables.
Claim 22
Dependent Claim
233 words
In an image recording system having a host computer, display means for displaying a process content of said host computer and a recording head for recording on a recording medium by using a plurality of recording heads arranged at a predetermined interval in a scan direction across a recording area, said plurality of recording heads capable of recording in at least one common color, said recording head comprising: scan means for causing said recording heads to scan corresponding divided recording areas; record control means for causing said recording heads the record by sharing the corresponding divided recording areas when said scan means causes said recording heads to scan the divided recording areas, so that the entire recording area is recordable by all of said plurality of recording heads in the common color; and correction means for independently correcting record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, for each of the divided recording areas, said correction means correcting the record signals in accordance with respective ones of plural correction tables; wherein said record control means outputs a test pattern comprising an output pattern of one of said plural recording heads and an output pattern of another of said recording heads holding said output pattern therebetween; and wherein said display means displays said test pattern for each of said correction tables.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2003-01-31 | 2003-08-02 | 2004-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-31 | 2007-08-02 | 2008-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-31 | 2011-08-02 | 2012-02-01 | $7700.00 | Window Closed / Lapsed |