Patent US4600931A successfully refreshed from Google Patents.
US4600931A
Expired / Lapsed
US
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Ink jet recording apparatus
Assignee: Canon Inc
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Filing: 1984-09-11
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Granted: 1986-07-15
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Expires: 2004-09-11
Abstract
Abstract An ink jet recording apparatus of the type in which ink is jetted toward recording paper from the tip end of a recording head to effect printing on the recording paper. The recording head is provided with a capping for covering the tip end of the head. The capping includes an ink suction mechanism for sucking ink from the recording head only when the tip end is capped.
Inventors
- 👤 Koji Terasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:09
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508; B41J2/16511
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
Ink jet recording apparatus, comprising: recording means having a tip end for ejecting ink to effect recording on a recording medium; cap means for sealing the tip end of said recording means; guide means for movably guiding said cap means to a position to seal the tip end of said recording means and to a position away from said recording means; holding means for holding said cap means in a position where the tip end of said recording means is tightly sealed by said cap means; and suction means connected to said cap means, for producing a negative pressure to suck the tip end of said recording means only when said cap means is in the position to seal said recording means.
Claim 2
Dependent Claim
122 words
Ink jet recording apparatus, comprising: recording means having a tip end for ejecting ink to effect recording on a recording medium; cap means for sealing the tip end of said recording means; guide means for movably guiding said cap means to a position to seal the tip end of said recording means and to a position away from said recording means; holding means for holding said cap means in a position where the tip end of said recording means is tightly sealed by said cap means; and suction means connected to said cap means, for producing a negative pressure to suck the tip end of said recording means only when said cap means is in the position to seal said recording means.
Claim 3
Dependent Claim
17 words
Ink jet recording apparatus according to claim 1 wherein said cap means includes an ink absorber therein.
Claim 4
Dependent Claim
35 words
Ink jet recording apparatus according to claim 1 further comprising means for allowing said suction means to produce a negative pressure only when said cap means is in the position to seal said recording means.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |