EP0456840A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pressure-sensitive adhesive tape, ink jet recording head, and storing method
Assignee: Canon Inc
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Filing: 1990-12-06
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Granted: —
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Expires: 2010-12-06
Abstract
Abstract Pressure-sensitive adhesive tape for use in an ink jet recording head, has the adhesive component comprising an acrylic ester copolymer prepd. by crosslinking with an isocyanate an acrylic copolymer prepd. by using at least 80 wt.% in total of a hydroxylated alkyl and/or alkoxyalkyl acrylate and an acrylic ester having a side chain comprising a 4-9C alkyl or alkoxyalkyl gp.
Inventors
- 👤 Seiichiro Karita
- 👤 Akio Saito
- 👤 Megumi Saito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 14:21
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17536; B41J2/17513; B41J2/17526; B41J2/17533; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08G2170/00; C08G2170/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
80 words
An adhesive tape characterized in that an adhesive component of an adhesive seal tape essentially consisting of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms.
Claim 2
Dependent Claim
31 words
A tape according claim 1, wherein said acrylate copolymer contains 70 parts by weight of butyl acrylate as the alkyl acrylate when Tg falls within a range of -40°C to -5°C.
Claim 3
Dependent Claim
163 words
A recording head including an ink storage unit, an energy generation element for injecting an ink from said ink storage unit, and an ink injection portion corresponding to said energy generation element, characterized by comprising a seal member for sealing said injection portion and an ink tank outer air communication port, and a press member for urging said seal member against said injection portion, and in that an adhesive component of said seal member essentially consists of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms, and said ink injection portion and said ink tank outer air communication port are sealed in a non-recording mode by said recording head.
Claim 4
Dependent Claim
48 words
A head according to claim 3, wherein said press member comprises an engaging portion engaged with said recording head, and an elastic member for maintaining an elastic deformation state and urging said seal member against said injection portion upon engagement between said recording head and said engaging portion.
Claim 5
Dependent Claim
39 words
A head according to claim 4, wherein the engagement is achieved by engagement between a plurality of grooves formed in said recording head and grooves, engaged with said plurality of grooves, as an engaging portion of said press member.
Claim 6
Dependent Claim
30 words
A head according to any one of claims 2 to 5, wherein said seal member is adhered to said ink injection portion and said ink tank outer air communication port.
Claim 7
Independent Claim
167 words
A method of storing a recording head including an opening portion which communicates with a storage unit for storing an ink and is open to outer air, characterized in that said recording head comprises a seal member simultaneously sealing an injection portion and an ink tank outer air communication port, both of which serve as said opening portion, and a press member for urging said seal member against said injection portion, said seal member containing an adhesive component essentially consisting of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms, and said recording head is stored by urging said injection portion against a peripheral portion of said seal member by said press member.
Claim 8
Dependent Claim
17 words
A method according to claim 7, wherein said sheet-like member is adhered to said ink injection portion.
Claim 9
Dependent Claim
121 words
A recording head cap characterized by comprising an engaging portion integrally engaged with a recording head, a flexible sheet adhered to an injection portion and an ink tank outer air communication port, and an elastic member formed at only a flexible sheet portion corresponding to said injection port, said flexible sheet containing an adhesive component essentially consisting of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms.
Claim 10
Dependent Claim
47 words
A head according to any one of claims 2 to 9 comprising a bubble-jet recording head, detachable from a recording apparatus main body, for performing recording using electrothermal conversion elements for generating heat energy by causing film boiling of an ink in response to an electrical signal.
Claim 11
Dependent Claim
181 words
An ink-jet cartridge storage container comprising a cover member and a container main body bonded to said cover member and having a recess which forms a storage space of an ink-cartridge having an injection port for injecting an ink, wherein said container main body comprises a wall portion kept separated from said ink-jet cartridge and a recess extending from said wall portion to said storage space to support said ink-jet cartridge, and said ink-jet cartridge comprises a seal member and a press member for urging said seal member against said ink-jet cartridge, said seal member containing an adhesive component for covering said injection port and an ink tank air communication port, said adhesive component essentially consisting of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms of.
Claim 12
Dependent Claim
187 words
An ink-jet cartridge storage container comprising a cover member and a container main body bonded to said cover member and having a recess which forms a storage space of an ink-cartridge having an injection port for injecting an ink, wherein said container main body comprises a wall portion kept separated from said ink-jet cartridge and a recess extending from said wall portion to said storage space to support said ink-jet cartridge, and said ink-jet cartridge comprises a seal member and a cap member for covering said injection port so as to urge said seal member against said ink-jet cartridge, said seal member containing an adhesive component for covering said injection port and an ink tank air communication port, said adhesive component essentially consisting of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms.
Claim 13
Independent Claim
234 words
A method of handling a recording head during use of an ink-jet cartridge, said recording head comprising an ink storage unit, energy generation elements for injecting an ink from said ink storage unit, an ink injection portion corresponding to said energy generation elements, a seal member for sealing said injection portion and an ink tank outer air communication port, and a press member for urging said seal member against said injection portion, said seal member containing an adhesive component essentially consisting of an acrylate copolymer obtained by crosslinking an acrylic copolymer with isocyanate, said acrylic copolymer being obtained by using at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms, said ink injection portion and said ink tank outer air communication port being sealed in a non-recording mode by said recording head, wherein when said recording head is set in a usable state, a portion of said seal member which corresponds to said ink tank outer air communication port is opened after said press member is released in a direction where said seal member is not present on said injection portion, and then said seal member is removed from said recording head so as to open said injection portion.
Claim 14
Dependent Claim
109 words
A seal member characterized in that said seal member contains an adhesive component essentially consisting of an acrylate copolymer as an acrylic crosslinked body obtained by crosslinking an acrylic copolymer with multivalent isocyanate, said acrylic copolymer being obtained by using not less than 5 wt% to not more than 15 wt% of a monomer selected from the group consisting of acrylonitrile and acrylamides and at least 80 wt% of a total content of an alkyl acrylate having an OH group and/or an alkoxy alkyl acrylate having an OH group, and an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 to 9 carbon atoms.
Claim 15
Dependent Claim
72 words
A member according to claim 14, wherein said acrylic copolymer essentially consists of an acrylic copolymer obtained by using not less than 5 wt% to less than 20 wt% of the alkyl acrylate and/or the alkoxy alkyl acrylate containing the OH group and by using not less than 80 wt% of an acrylate having a side chain of an alkyl or alkoxy alkyl group having 4 (inclusive) to 9 (inclusive) carbon atoms.
References Cited (Backward Citations)
No citation records indexed.
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