Patent US6315778B1 successfully refreshed from Google Patents.
US5155503A
Expired / Lapsed
US
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Ink jet recording apparatus with detection of environmental condition used to control dot thinning rate
Assignee: Canon Inc
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Filing: 1990-07-16
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Granted: 1992-10-13
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Expires: 2010-07-16
Abstract
Abstract This specification discloses an ink jet recording method and apparatus for printing thinning print dots and based upon a printing mode or the printing dot density of the characters.
Inventors
- 👤 Shigemitsu Tasaki
- 👤 Mikio Shiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:27
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/485; B41J2/505; B41J2/5056; B41J2/5058; B41J2/005; B41J2/01; B41J2/17; B41J2/195
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
A recording apparatus comprising: feeding means for feeding a recording medium; detecting means, disposed proximate to a feeding path of said feeding means, for detecting a surrounding environmental condition; control means for changing a dot thinning rate based on the environmental condition detected by said detecting means; and recording means for recording on the recording medium in accordance with the dot thinning rate controlled by said control means.
Claim 2
Dependent Claim
68 words
A recording apparatus comprising: feeding means for feeding a recording medium; detecting means, disposed proximate to a feeding path of said feeding means, for detecting a surrounding environmental condition; control means for changing a dot thinning rate based on the environmental condition detected by said detecting means; and recording means for recording on the recording medium in accordance with the dot thinning rate controlled by said control means.
Claim 3
Dependent Claim
19 words
A recording apparatus according to claim 1 wherein the dot thinning rate is changed to vary the printing density.
Claim 4
Dependent Claim
18 words
A recording apparatus according to claim 1, wherein said detecting means detects the humidity at said recording means.
Claim 5
Dependent Claim
18 words
A recording apparatus according to claim 1, wherein said detecting means detects the temperature at said recording means.
Claim 6
Dependent Claim
22 words
A recording apparatus according to claim 1, wherein said recording means includes thermal energy discharging means for discharging ink to effect recording.
Claim 7
Dependent Claim
18 words
A recording apparatus according to claim 1, wherein said recording means records characters including letters and graphic images.
Claim 8
Dependent Claim
44 words
A recording apparatus according to claim 1, further comprising a heater disposed proximate to the feeding path and at a position downstream of a position where recording by said recording means is effected, for heating the recording medium to promote fixing of the recording.
Claim 9
Dependent Claim
31 words
A recording apparatus according to claim 1, further comprising storing means for storing print dot thinning information corresponding to print font data in a memory that stores the print font data.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |