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EP0417673A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Ink recording apparatus

Assignee: Panasonic Holdings Corp
•
Filing: 1990-09-08
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Granted: —
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Expires: 2010-09-08
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Abstract

Abstract An ink recording apparatus used with printers or the like and manufactured by applying semiconductor device manufacturing techniques. One wall of an ink chamber (20) is formed of a single-crystal substrate (21) and an ink jet port (21a) is formed by etching on the single-crystal sub­strate (21). A shutter (25) and electrodes (24a to 24h) composed of polycrystalline-silicon film are formed on the single-crystal substrate by film forming in the LPCVD method and patterning through plasma etching. A front wall (28) is formed by coating the shutter (25) and electrodes (24a to 24h) further with a polycrystalline-silicon film. The shutter (25) is movable between the wall surface of the ink chamber (20) and the front wall (28), being driven through electrostatic attracting force produced between voltage-ap­plied electrodes (24a to 24h) and the shutter (25). The electrodes (24a to 24h) are formed at positions correspond­ing to those where the shutter (25) blocks the ink jet port (21a) and releases the same.

Inventors

  • 👤 Narito Shibaike
  • 👤 Soichiro Mima

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 05:28
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1621; B41J2/1626; B41J2/1629; B41J2/1607; B41J2/1628

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 103 words
An ink recording apparatus comprising: an ink chamber (20) for being filled with ink; an ink jet port (21a) provided to said ink chamber (20); a shutter (25) provided in the vicinity of said ink jet port (21a), said shutter (25) being movable between a shut-off position for shutting off ink from passing through said ink jet port (21a) and a passing position for allowing ink to pass through; and shutter driving means (24a to 24h, 41 to 46) for not only driving said shutter but also holding said shutter (25) in said shut-off position while the apparatus is out of recording operation.
Claim 2
Dependent Claim 103 words
An ink recording apparatus comprising: an ink chamber (20) for being filled with ink; an ink jet port (21a) provided to said ink chamber (20); a shutter (25) provided in the vicinity of said ink jet port (21a), said shutter (25) being movable between a shut-off position for shutting off ink from passing through said ink jet port (21a) and a passing position for allowing ink to pass through; and shutter driving means (24a to 24h, 41 to 46) for not only driving said shutter but also holding said shutter (25) in said shut-off position while the apparatus is out of recording operation.
Claim 3
Dependent Claim 129 words
An ink recording apparatus comprising: an ink chamber (20) for being filled with ink; an ink jet port (21a) provided to said ink chamber (20); a shutter (25) provided in the vicinity of said ink jet port (21a) and outside of said ink chamber (20), said shutter (25) being movable between a shut-off position for shutting off ink from passing through said ink jet port (21a) and a passing position for allowing ink to pass through; shutter driving means (24a to 24h, 41 to 46) for not only driving said shutter (25) but also holding said shutter (25) in said shut-off position while the apparatus is out of recording operation; and a wall (28) provided outside of said shutter (25) for covering the external surface of said shutter (25).
Claim 4
Dependent Claim 129 words
An ink recording apparatus comprising: an ink chamber (20) for being filled with ink; an ink jet port (21a) provided to said ink chamber (20); a shutter (25) provided in the vicinity of said ink jet port (21a) and outside of said ink chamber (20), said shutter (25) being movable between a shut-off position for shutting off ink from passing through said ink jet port (21a) and a passing position for allowing ink to pass through; shutter driving means (24a to 24h, 41 to 46) for not only driving said shutter (25) but also holding said shutter (25) in said shut-off position while the apparatus is out of recording operation; and a wall (28) provided outside of said shutter (25) for covering the external surface of said shutter (25).
Claim 5
Dependent Claim 96 words
An ink recording apparatus as claimed in claim 1, wherein said shutter (25) is formed of a thin film, said shutter driving means (24a to 24h, 41 to 46) comprising: electrodes (24a to 24h) provided in correspondence to each of said shut-off position and passing position for said shutter(25); a power supply (46) for applying voltage to said electrodes (24a to 24h); and a control circuit (41), whereby said shutter (25) is driven by virtue of electrostatic attracting force acting between the surfaces of said electrodes (24a to 24h) and the surface of said shutter 25).
Claim 6
Dependent Claim 27 words
An ink recording apparatus as claimed in claim 1, wherein said shutter driving means includes elastic member (25d) for biasing said shutter (25) toward said shut-off position.
Claim 7
Dependent Claim 27 words
An ink recording apparatus as claimed in claim 3, wherein said shutter driving means includes elastic member (25d) for biasing said shutter (25) toward said shut-off position.

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