US4510510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inkjet printer
Assignee: Canon Inc
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Filing: 1983-04-04
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Granted: 1985-04-09
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Expires: 2003-04-04
Abstract
Abstract An inkjet printer has a plurality of storing members for storing inks of different colors, a plurality of recording units for injecting the inks stored in the storing member, a plurality of air suction paths which are disposed in correspondence with the storing member for drawing the air in the storing member and which are independent from each other and do not communicate with each other, suction unit for drawing the air in the storing member through the air suction paths in the suction mode and for sealing the air suction paths and for sealing communication between the air suction paths in the non-suction mode.
Inventors
- 👤 Koji Terasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:01
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
An inkjet printer comprising: a plurality of storing means storing inks of different colors; a plurality of recording means for ejecting the inks stored in said storing means; a plurality of air suction paths which are disposed in correspondence with said storing means for drawing air in said storing means and which are independent from each other and do not communicate with each other; and single suction means for drawing by suction the air from said storing means through said air suction paths in a suction mode, and for sealing said air suction paths to seal communication between said air suction paths in a non-suction mode.
Claim 2
Dependent Claim
106 words
An inkjet printer comprising: a plurality of storing means storing inks of different colors; a plurality of recording means for ejecting the inks stored in said storing means; a plurality of air suction paths which are disposed in correspondence with said storing means for drawing air in said storing means and which are independent from each other and do not communicate with each other; and single suction means for drawing by suction the air from said storing means through said air suction paths in a suction mode, and for sealing said air suction paths to seal communication between said air suction paths in a non-suction mode.
Claim 3
Dependent Claim
78 words
An inkjet printer according to claim 1, wherein said printer further comprises ink suction paths which are disposed in correspondence with said recording means and are independent from each other and do not communicate with each other, said suction means drawing by suction the air and the inks through said air suction paths and said ink suction paths, respectively, in the suction mode, and sealing said air suction paths and said ink suction paths in the non-suction mode.
Claim 4
Dependent Claim
38 words
An inkjet printer according to claim 2, wherein said printer further comprises means for sealing an ejecting end each of said recording means, said air suction paths and said ink suction paths being disposed in said sealing means.
Claim 5
Dependent Claim
56 words
An inkjet printer according to claim 3, wherein said sealing means is shiftable between a position to seal said recording means and a position to open said recording means, and said suction means includes means for opening/closing said air suction paths and said ink suction paths in cooperation with a shifting operation of said sealing means.
Claim 6
Dependent Claim
131 words
A suction apparatus for an ink jet printer, comprising: a plurality of suction paths which are disposed in correspondence with a plurality of recording means for ejecting inks and are independent from each other and do not communicate with each other; and a suction source for drawing by suction at least the inks through said suction paths, said suction source including: a cylinder member to which said suction paths are connected at respective suction openings, and a piston member which is fitted inside said cylinder member to slide therealong for producing a negative pressure in said cylinder member, and said piston member having a rib for sealing said plurality of suction openings, and said rib having a width which is greater than the inner diameter of each of said suction openings.
Claim 7
Dependent Claim
131 words
A suction apparatus for an ink jet printer, comprising: a plurality of suction paths which are disposed in correspondence with a plurality of recording means for ejecting inks and are independent from each other and do not communicate with each other; and a suction source for drawing by suction at least the inks through said suction paths, said suction source including: a cylinder member to which said suction paths are connected at respective suction openings, and a piston member which is fitted inside said cylinder member to slide therealong for producing a negative pressure in said cylinder member, and said piston member having a rib for sealing said plurality of suction openings, and said rib having a width which is greater than the inner diameter of each of said suction openings.
Claim 8
Dependent Claim
24 words
A suction apparatus according to claim 5, wherein said suction openings are disposed in an array on a circumferential surface of said cylinder member.
Claim 9
Dependent Claim
24 words
A suction apparatus according to claim 6, wherein said apparatus further comprises means for biasing for returning said piston member to said predetermined position.
Claim 10
Dependent Claim
24 words
A suction apparatus according to claim 5, wherein, said apparatus further comprises means for biasing for returning said piston member to said predetermined position.
Claim 11
Dependent Claim
24 words
A suction apparatus according to claim 5, wherein said apparatus further comprises means for biasing for returning said piston member to said predetermined position.
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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |