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AssigneeCanon Kabushiki Kaisha
InventorsYuzuru Ishida, Takuya Hatsui, Kazuaki Shibata, Takeru Yasuda, Ryoji Oohashi, Yoshiyuki Imanaka, Koichi Omata, Hideo Tamura, Kousuke Kubo, Yuji Tamaru
Estimating the term…
When protective portions are independently provided for each energy generation element, a leakage current inspection between the protective portions and the energy generation elements cannot be performed at once. Therefore, there is a concern that the inspection in manufacturing a substrate for liquid ejection head requires time. Therefore, the substrate for liquid ejection head is manufactured by performing a leakage current inspection between a connecting portion that is electrically connected to plurality of protective portions and a terminal to which the plurality of energy generation elements are connected, and thereafter removing the connecting portion.
A method for manufacturing a substrate for a liquid ejection head which includes a plurality of energy generation elements that contain a material that generate heat by energization and that generate thermal energy for ejecting liquid, an insulating layer that contains an insulating material and that is provided to cover the plurality of energy generation elements, and a plurality of protective members for protecting the plurality of energy generation elements, the plurality of protective members containing a metal material and each of the protective members is provided corresponding to one of the energy generation elements in such a manner as to cover the insulating layer, the method comprising:
Dependencies are inferred from the claim text.