Liquid Ejection Head Substrate Handling via Intermediary Carrier
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Solution Overview
Problem
The downsizing of liquid ejection head elements leads to insufficient space for suctioning and holding print element substrates, resulting in potential positional shifts and reduced accuracy of liquid landing positions during ejection.
Innovation Solution
A liquid ejection head design that includes a pressure chamber, energy generating elements, ejection ports, and a support member with a holding region, where the first member has a surface jointed to the element substrate and a support member, ensuring sufficient space for accurate suction and holding, and a method for manufacturing this configuration to enhance positional accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the element substrate is downsized, then the liquid ejection head can be miniaturized and integrated more efficiently, but the space for suctioning and holding the substrate becomes insufficient, leading to positional shifts and reduced manufacturing precision
Solution Approach 1:
The invention divides the substrate handling process into two distinct stages: first attaching the element substrate to a first member (carrying substrate), then attaching the first member to the support member. This segmentation allows the suction finger to operate on the larger first member rather than the small element substrate, ensuring sufficient suction area while maintaining precise final positioning through the two-step attachment process
Solution Approach 2:
The first member (carrying substrate) serves as an intermediary between the suction finger and the element substrate. By attaching the substrate to this intermediate carrier first, the system enables reliable suction and handling of the substrate without directly contacting it, thus preventing positional shifts while accommodating the substrate's small size
Data Source
AI summary
A method for manufacturing a liquid ejection head includes joining a support member to a print element substrate using another member to which the print element substrate is attached. The other member has a suction region to be held at the time of being attached to the support member.