US5166699A
Expired / Lapsed
US
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Recording apparatus
Assignee: Canon Inc
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Filing: 1991-04-09
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Granted: 1992-11-24
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Expires: 2011-04-09
Abstract
Abstract A recording apparatus having a recording head (5) provided with plural ink discharging outlets for discharging ink includes a detector for detecting temperature distribution in the recording head (5) relating to recording operation of the recording head (5); and a controller (20) responsive to an output of the detector to control a recording speed of the recording head (5). <MATH>
Inventors
- 👤 Kentaro Yano
- 👤 Noribumi Koitabashi
- 👤 Naoji Otsuka
- 👤 Miyuki Matsubara
- 👤 Hitoshi Sugimoto
- 👤 Atsushi Arai
- 👤 Hiroshi Tajika
- 👤 Hiromitsu Hirabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:51
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/165; B41J2/16579; B41J2/17; B41J2/195; B41J2/14; B41J2002/14379
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A recording apparatus having a recording head provided with plural ink discharging outlets for discharging ink, said apparatus comprising: detecting means for detecting a temperature distribution in the recording head relating to a recording operation of said recording head; and control means responsive to an output of said detecting means to control a recording speed of said recording head, wherein said control means interrupts a recording operation for not more than 100 msec in accordance with the output of said detecting means.
Claim 2
Dependent Claim
82 words
A recording apparatus having a recording head provided with plural ink discharging outlets for discharging ink, said apparatus comprising: detecting means for detecting a temperature distribution in the recording head relating to a recording operation of said recording head; and control means responsive to an output of said detecting means to control a recording speed of said recording head, wherein said control means interrupts a recording operation for not more than 100 msec in accordance with the output of said detecting means.
Claim 3
Dependent Claim
36 words
An apparatus according to claim 1, wherein said detecting means detects the temperature distribution on the basis of data relating to a number of ink ejections in the recording operation for each of the discharging outlets.
Claim 4
Dependent Claim
27 words
An apparatus according to claim 1, wherein said detecting means detects the temperature distribution on the basis of detections of temperatures in each of the discharge outlets.
Claim 5
Dependent Claim
56 words
An apparatus according to claim 1, wherein said detecting means includes means for detecting the temperature distribution on the basis of data relating to a number of ink ejections during the recording operation from each of the discharging outlets, and means for detecting the temperature distribution on the basis of temperatures in the respective discharging outlets.
Claim 6
Dependent Claim
41 words
An apparatus according to claim 1, further comprising discharging means for forcedly discharging the ink through the ejection outlets by application of pressure, and second control means for driving said discharging means in response to an output of said detecting means.
Claim 7
Dependent Claim
37 words
An apparatus according to claim 1, wherein said recording head includes electrothermal transducers for the respective discharging outlets, the electrothermal transducers producing thermal energy to produce film boiling of the ink to discharge the ink for recording.
Claim 8
Dependent Claim
92 words
A recording control method for recording on a recording material with an ink jet recording head having thermal energy generating elements corresponding to plural discharging outlets, said method comprising the steps of: determining a temperature distribution in the recording head; discriminating, in accordance with a result of said temperature distribution determining step, whether a recording operation is to be continued or interrupted for an interruption period; and resuming the recording operation after an elapse of an interruption period determined in said discriminating step, wherein the interruption is not more than 100 msec.
Claim 9
Dependent Claim
92 words
A recording control method for recording on a recording material with an ink jet recording head having thermal energy generating elements corresponding to plural discharging outlets, said method comprising the steps of: determining a temperature distribution in the recording head; discriminating, in accordance with a result of said temperature distribution determining step, whether a recording operation is to be continued or interrupted for an interruption period; and resuming the recording operation after an elapse of an interruption period determined in said discriminating step, wherein the interruption is not more than 100 msec.
Claim 10
Dependent Claim
26 words
A method according to claim 7, wherein said thermal energy generating elements comprise electrothermal transducer elements for producing bubbles of ink in response to recording signals.
Claim 11
Dependent Claim
21 words
A method according to claim 7, wherein said temperature distribution is determined by plural temperature detecting sensors disposed at different positions.
Claim 12
Dependent Claim
43 words
A method according to claim 7, wherein said discriminating step is performed on the basis of duty ratio per unit type of the recording signals supplied to predetermined plural regions of the recording head and a total duty supplied to the plural regions.
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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) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |