Discharge element substrate and liquid discharge head
JP2025134354APending Publication Date: 2025-09-17CANON KK
Patent Information
- Application Number
- JP2024032205
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-09-17
AI Technical Summary
Technical Problem
The existing ejection element substrate design with two rows of ink supply ports and one row of through holes increases the distance between liquid ejection ports, hindering the miniaturization of the liquid ejection head.
Method used
The ejection element substrate is designed with first and second energy generating elements and drive circuits arranged side by side along a main direction, with selection circuits to drive specific energy generating elements, reducing the substrate area by allowing high-density heater arrangement.
Benefits of technology
This design reduces the area of the ejection element substrate and the liquid ejection head, enabling smaller size and improved reliability by reducing the number of electrodes and sealing area.
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Smart Images
Figure 2025134354000001_ABST
Abstract
To reduce an area of a discharge element substrate.SOLUTION: The discharge element substrate comprises: a plurality of n-th (n=1, 2) energy generating elements; a plurality of n-th drive circuits for driving each of the plurality of n-th energy generating elements; and n-th selecting circuits for selecting some n-th drive circuits from the n-th drive circuits, and making the selected n-th drive circuits drive some n-th second energy generating elements each corresponding to the selected n-th drive circuits, wherein the plurality of n-th drive circuits are arranged in alignment along a first direction, and a plurality of first energy generating elements and a plurality of second energy generating elements are arranged in alignment so that the first direction serves as a main direction in a region between a region with the arrangement of the plurality of first drive circuits and a region with the arrangement of the plurality of second drive circuits.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Inkjet head
JP2012254527A