Patent US309132A successfully refreshed from Google Patents.
EP0503497A2
Expired / Lapsed
EP
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Sealing member for ink container portion and recording head employing the same
Assignee: Canon Inc
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Filing: 1992-03-06
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Granted: —
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Expires: 2012-03-06
Abstract
Abstract An adhesive sheet-type sealing member (1) is suitably used for protecting ink-ejecting nozzles (30) or a communication hole of an ink-jet recording head (12) during transportation or storage. The sealing member (1) exhibits a yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min ±10% according to JIS-K-7113 and/or exhibits a folding load of not more than 0.10 g/cm for a specimen of 10 mm wide with a free length of 10 mm from the end of a specimen holder measured on the center of an electronic balance placed at a position 5 mm apart from the end of the specimen holder.
Inventors
- 👤 Masahiko C/O Canon Kabushiki Kaisha Higuma
- 👤 Takashi C/O Canon Kabushiki Kaisha Watanabe
- 👤 Hiroyuki C/O Canon Kabushiki Kaisha Ishinaga
- 👤 Takahisa c/o Canon Kabushiki Kaisha Kawamura
- 👤 Seiichiro C/O Canon Kabushiki Kaisha Karita
- 👤 Akihiro c/o Canon Kabushiki Kaisha Yamanaka
- 👤 Norio C/O Canon Kabushiki Kaisha Ohkuma
- 👤 Akira C/O Canon Kabushiki Kaisha Goto
- 👤 Teruo C/O Canon Kabushiki Kaisha Arashima
- 👤 Motoaki c/o Canon Kabushiki Kaisha Sato
- 👤 Megumi C/O Canon Kabushiki Kaisha Saito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:39
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17536; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508; B41J2/1752; B41J2/17533
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
66 words
A sealing member for sealing, with a pressure-sensitive adhesive portion thereof, a communicating hole or a joint portion between the interior and the exterior of a recording/container portion holding therein an ink, said sealing member exhibiting an yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min ±10% according to JIS-K-7113.
Claim 2
Dependent Claim
22 words
The sealing member of Claim 1, wherein the position sealed by the sealing member is a stepped face of the recording/container portion.
Claim 3
Dependent Claim
81 words
A recording head having an ink container, an energy-generating element for generating energy for ejecting an ink held in the ink container, an ink-ejecting portion corresponding to the energy-generating element, and a sealing member for sealing the ink-ejecting portion of the recording head through a pressure-sensitive adhesive, said sealing member exhibiting an yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min ±10% according to JIS-K-7113.
Claim 4
Dependent Claim
63 words
The recording head of Claim 3, wherein the pressure-sensitive adhesive is an acrylate ester copolymer crosslinked by an isocyanate, the acrylate ester copolymer being composed of at least 80 % by weight in total of an alkyl and/or alkoxyalkyl acrylate ester containing a hydroxy group, and acrylate ester having a side chain of an alkyl or alkoxyalkyl group of 4 to 9 carbons.
Claim 5
Dependent Claim
25 words
The recording head of Claim 3 or Claim 4, wherein the energy-generating element comprises an electrothermal transducer for generating thermal energy for ejecting the ink.
Claim 6
Dependent Claim
20 words
The recording head of Claim 3, wherein the position to be sealed by the sealing member has a stepped structure.
Claim 7
Dependent Claim
88 words
A sealing member for sealing, with a pressure-sensitive adhesive portion thereof, a communicating hole or a joint portion between the interior and the exterior of a recording/container portion holding therein an ink, said sealing member exhibiting a folding load of not more than 0.10 g/cm for a specimen of 10 mm wide with a free length of 10 mm from the end of a specimem holder measured on the center of an electronic balance placed at a position 5 mm apart from the end of the specimen holder.
Claim 8
Dependent Claim
41 words
The sealing member of Claim 7, wherein the sealing member exhibits an yield point at a load of not more than 1 kgf/cm for a specimen of 10 mm wide at a stress rate of 200 mm/min ±10% according to JIS-K-7113.
Claim 9
Dependent Claim
59 words
A recording head having an ink container, an energy-generating element for generating energy for ejecting an ink held in the ink container, and an ink-ejecting portion corresponding to the energy-generating element, employing the sealing member of Claim 7 or Claim 8 as a sealing member for ink recording head for sealing the ink-ejecting portion by a pressure-sensitive adhesive portion.
Claim 10
Dependent Claim
64 words
The recording head of Claim 9, wherein the pressure-sensitive adhesive is an acrylate ester copolymer crosslinked by an isocyanate, the acrylate ester copolymer being composed of at least 80 % by weight in total of an alkyl and/or alkoxyalkyl acrylate ester containing a hydroxy group, and an acrylate ester having a side chain of an alkyl or alkoxyalkyl group of 4 to 9 carbons.
Claim 11
Dependent Claim
22 words
The recording head of Claim 10, wherein the energy-generating element comprises an electrothermal transducer for generating thermal energy for ejecting the ink.
Claim 12
Dependent Claim
36 words
The recording head of Claim 11, wherein the portion to be sealed by the sealing member has a stepped structure, and the folding load is not more than 0.05 g/cm and not less than 0.01 g/cm.
References Cited (Backward Citations)
No citation records indexed.
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