Liquid jet head and method for producing same, and liquid jet apparatus and image forming apparatus

Patent metadata

Field	Value
Publication number	US-9757944-B2
Application number	US-201515305723-A
Country	US
Kind code	B2
Filing date	May 19, 2015
Priority date	May 23, 2014
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

Provided is a liquid jet head, including a flow path including a first member, a resin layer, and a second member, wherein the resin layer contains a cured product of a resin composition containing an epoxy compound represented by General Formula (1), a polythiol compound having 2 or more thiol groups in a molecule thereof, and a specific imidazole compound, where in General Formula (1), L is an integer of 0 or greater but less than 3, m is a positive number of 0.1 or greater but less than 50, R 1 represents any one of a hydrogen atom, and an alkyl group having 1 to 4 carbon atoms, and R 2 represents a substituent represented by a formula below where R 3 and R 4 each represent any one of hydrogen atom, and a non-substituted or fluorine-substituted methyl group, and n is an integer of 4 to 12.

First claim

The invention claimed is:

1. A liquid jet head, comprising:
a flow path composed of a first member, a resin layer, and a second member,
wherein the resin layer comprises a cured product of a resin composition that comprises: an epoxy compound represented by general formula (1) below; a polythiol compound having 2 or more thiol groups in a molecule thereof; and an imidazole compound represented by general formula (2) below:

wherein in general formula (1), L is an integer of 0 or greater but less than 3, m is a positive number of 0.1 or greater but less than 50, R 1 represents any one of a hydrogen atom, and an alkyl group having 1 to 4 carbon atoms, and R 2 represents a substituent represented by a formula below,

wherein R 3 and R 4 each independently represent any one of a hydrogen atom, and a non-substituted or fluorine-substituted methyl group, and n is an integer of from 4 to 12,

wherein in general formula (2), k is 1 or greater but less than 6, j is 0 or 1, R 5 , R 6 , and R 7 each independently represent any one of a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, and an aryl group, R 8 represents any one of an alkylene group having 1 to 20 carbon atoms, an arylene group, and —CH 2 CH 2 COO—, R 9 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group, or a cyanomethyl group when k is 1, and represents a hydrocarbon group having 1 to 20 carbon atoms when k is 2 to 6.

2. The liquid jet head according to claim 1 , wherein in general formula (2), j is 1.

3. The liquid jet head according to claim 1 , wherein the epoxy compound represented by general formula (1) is an epoxy compound represented by a general formula (3):

wherein in general formula (3), L is an integer of 0 or greater but less than 3, in is a positive number of 0.1 or greater but less than 50, and R 1 represents any one of a hydrogen atom, and an alkyl group having 1 to 4 carbon atoms.

4. The liquid jet head according to claim 1 , wherein the resin composition comprises an epoxy compound represented by a general formula (4):

wherein in general formula (4), R represents any one of a hydrogen atom, and an alkyl group having 1 to 4 carbon atoms.

5. The liquid jet head according to claim 1 , wherein the resin composition comprises an epoxy compound represented by a general formula (5):

wherein in general formula (5), R 10 and R 11 each independently represent any one of a hydrogen atom, and an alkyl group having 1 to 4 carbon atoms.

6. The liquid jet head according to claim 1 , wherein a content of the epoxy compound represented by general formula (1) is from 10 parts by mass to 100 parts by mass relative to a total epoxy compound amount of 100 parts by mass.

7. The liquid jet head according to claim 1 , wherein the polythiol compound is at least one kind selected from the group consisting of dipentaerythritol hexa(3-mercaptobutyrate), and 1,3,5-tris(3-mercaptopropyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione.

8. The liquid jet head according to claim 1 , wherein the resin composition comprises a silane coupling agent represented by general formula (6):

wherein in general formula (6), R 7 and R 8 represent an alkyl group having 1 to 4 carbon atoms, R 9 represents any one of an alkylene group having 1 to 20 carbon atoms, and an arylene group, and R 10 represents any one of a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, and an aryl group.

9. The liquid jet head according to claim 8 , wherein the silane coupling agent represented by general formula (6) is at least one kind selected from the group consisting of 3-aminopropyl-trimethoxysilane, 3-aminopropyl triethoxysilane, N-(2-aminoethyl)aminopropyl trimethoxysilane, N-(2-aminoethyl)aminopropylmethyl dimethoxysilane, and 3-phenylaminopropyl trimethoxysilane.

10. The liquid jet head according to claim 1 , wherein an interface at which at least any one of the first member and the second member contacts the resin layer comprises a treatment layer, the treatment layer is an oxide that comprises Si, and the oxide comprises a transition metal forming a passive layer over any one of the first member and the second member.

11. The liquid jet head according to claim 10 , wherein the treatment layer comprises at least one transition metal selected from the group consisting of transition metals of Group IV and Group V.

12. The liquid jet head according to claim 10 , wherein the treatment layer comprises at least one kind selected from the group consisting of Hf, Ta, and Zr.

13. The liquid jet head according to claim 1 , wherein the liquid jet head comprises the resin layer between the first member and the second member, and an average thickness of the resin layer is from 1.0 μm to 2.5 μm.

14. The liquid jet head according to claim 1 ,
wherein the first member is a nozzle plate in which jet ports for jetting a liquid are formed,
wherein the second member is a flow path plate that comprises individual liquid chambers leading to the jet ports, and
wherein the individual liquid chambers are formed by the first member and the second member being bonded via the resin layer.

15. The liquid jet head according to claim 1 , wherein the resin layer comprises a structural unit represented by general formula (1a), a structural unit represented by structural formula 1, and an imidazole compound represented by general formula (2):

wherein in general formula (1a), L is an integer of 0 or greater but less than 3, m is a positive number of 0.1 or greater but less than 50, R 1 represents any one of a hydrogen atom, and an alkyl group having 1 to 4 carbon atoms, and R 2 represents a substituent represented by a formula below,

wherein R 3 and R 4 each independently represent any one of a hydrogen atom, and a non-substituted or fluorine-substituted methyl group, and n is an integer of from 4 to 12,

wherein in general formula (2), k is 1 or greater but less than 6, j is 0 or 1, R 5 , R 6 , and R 7 each independently represent any one of a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, and an aryl group, R 8 represents any one of an alkylene group having 1 to 20 carbon atoms, an arylene group, and —CH 2 CH 2 COO—, and R 9 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group, or a cyanomethyl group when k is 1, and represents a hydrocarbon group having 1 to 20 carbon atoms when k is 2 to 6.

16. An image forming apparatus, comprising:
a housing unit configured to house an inkjet ink, and
a liquid jet head co

Assignees

• Takagi Daisuke
• Habashi Hisashi
• Aratani Tomoyuki
• Sameshima Tatsuya
• Ogawa Ryo
• Matsuda Takuya
• Ricoh Co Ltd

Inventors

• Takagi Daisuke
• Habashi Hisashi
• Aratani Tomoyuki
• Sameshima Tatsuya
• Ogawa Ryo
• Matsuda Takuya

Classifications

• B41J2202/03

  Specific materials used · CPC title

• B41J2/14274 Primary

  of stacked structure type, deformed by compression/extension and disposed on a diaphragm · CPC title

• B41J2/1433 Primary

  Structure of nozzle plates · CPC title

• B41J2/14 Primary

  Structure thereof {only for on-demand ink jet heads} · CPC title

• C08G59/5073

  having two nitrogen atoms in the ring · CPC title