US5043748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus
Assignee: Canon Inc
•
Filing: 1990-10-01
•
Granted: 1991-08-27
•
Expires: 2010-10-01
Abstract
Abstract This invention provides a recording apparatus having a recording head capable of recording a predetermined amount of data at a speed higher than transfer speed of the predetermined image data supplied from image data supply source, carry means to convey recording medium to the recording head, and control means to control conveying speed corresponding to the transfer speed. This invention contributes to obtain a high density clear image capable of continued recording without interrupting conveyance of recording medium.
Inventors
- 👤 Akira Katayama
- 👤 Ryoichi Koizumi
- 👤 Hideaki Kishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:42
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
A recording apparatus comprising: a buffer memory part for temporarily storing information from an image data supply source; a recording head capable of recording a predetermined amount of image data on a recording medium at a speed higher than a speed of transfer of the predetermined amount of image data from the image data supplying source, the transfer speed corresponding to a rate of use of said buffer memory part; carrying means for carrying the recording medium toward said recording head; and control means for controlling the carrying speed of said recording medium, to reduce the carrying speed, while recording, in response to a decrease in said transfer speed.
Claim 2
Dependent Claim
109 words
A recording apparatus comprising: a buffer memory part for temporarily storing information from an image data supply source; a recording head capable of recording a predetermined amount of image data on a recording medium at a speed higher than a speed of transfer of the predetermined amount of image data from the image data supplying source, the transfer speed corresponding to a rate of use of said buffer memory part; carrying means for carrying the recording medium toward said recording head; and control means for controlling the carrying speed of said recording medium, to reduce the carrying speed, while recording, in response to a decrease in said transfer speed.
Claim 3
Dependent Claim
17 words
A recording apparatus according to claim 1, wherein said recording head is an ink jet recording head.
Claim 4
Dependent Claim
25 words
A recording apparatus according to claim 2, wherein said ink jet recording head includes ink discharging ports over the entire width of a recording area.
Claim 5
Dependent Claim
18 words
A recording apparatus according to claim 2, wherein said recording head discharges ink for recording utilizing heat energy.
Claim 6
Dependent Claim
26 words
A recording apparatus according to claim 1, wherein said control means controls the carrying speed on the basis of working rate of said buffer memory part.
Claim 7
Dependent Claim
17 words
A recording apparatus according to claim 1, wherein said control means produces a signal for record timing.
Claim 8
Dependent Claim
29 words
A recording apparatus according to claim 1, wherein said control means comprises a speed control part to control the rotating speed of a motor for driving said carrying means.
Claim 9
Dependent Claim
113 words
A recording apparatus comprising: an ink jet recording head for forming an image on a recording medium in accordance with a recording signal, said recording signal comprising recording data supplied to said recording apparatus from a host device; control means for controlling said recording head to record in response to said recording signal so as to maintain a difference of speed between said recording head and the recording medium; and means for setting said difference of relative speed at either a maximum speed difference or a speed difference smaller than said maximum speed difference, while recording, in accordance with a transfer speed of recording data from said host device to said recording apparatus.
Claim 10
Dependent Claim
113 words
A recording apparatus comprising: an ink jet recording head for forming an image on a recording medium in accordance with a recording signal, said recording signal comprising recording data supplied to said recording apparatus from a host device; control means for controlling said recording head to record in response to said recording signal so as to maintain a difference of speed between said recording head and the recording medium; and means for setting said difference of relative speed at either a maximum speed difference or a speed difference smaller than said maximum speed difference, while recording, in accordance with a transfer speed of recording data from said host device to said recording apparatus.
Claim 11
Dependent Claim
19 words
A recording apparatus according to claim 8, wherein said recording head discharges ink for recording by utilizing heat energy.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |