Liquid ejection head

A dual-adhesive layer with varying rigidity in the liquid ejection head mitigates stress-induced cracks by balancing thermal expansion differences, ensuring substrate integrity.

JP7612477B2Active Publication Date: 2025-01-14CANON KK
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Patent Information

Application Number
JP2021050143
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-11-26
Filing Date
2021-03-24
Publication Date
2025-01-14
Estimated Expiration
2041-03-24

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Patent Text Reader

Abstract

To suppress occurrence of cracking of a recording element substrate.SOLUTION: A liquid discharge head comprises: a recording element substrate 2010 that discharges liquid; a support member 2030 that supports the recording element substrate 2010; an adhesion layer 4000 provided between the recording element substrate 2010 and the support member 2030; a terminal 16 provided at an end part 500 of the recording element substrate 2010; and a sealing member 110 that seals the end part 500 of the recording element substrate 2010 including the terminal 16. The sealing member 110 contacts a side surface of the end part 500 and an end face of the adhesion layer 4000. The adhesion layer 4000 has a first adhesion part 400 and a second adhesion part 401 positioned between the first adhesion part 400 and the sealing member 110. Rigidity of the second adhesion part 401 is smaller than respective rigidity of the sealing member 110 and of the first adhesion part 400.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

  • Ink-jet head

    JP2008173960A

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    JP2010284813A

  • Liquid discharge head, liquid discharge device, and method for manufacturing liquid discharge head

    JP2017205903A

  • Adhesive Compositions, Micro-Fluid Ejection Devices, and Methods for Attaching Micro-Fluid Ejection Heads

    US20070236542A1

  • Liquid discharge head and method for producing same

    WO2013088505A1