Liquid discharge head and liquid discharge apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYoshiyuki Imanaka, Hiroyuki Ishinaga, Akihiro Yamanaka, Masahiko Kubota, Ryoji Inoue
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Abstract
A liquid discharge head comprises first and second substrates which are to be mutually adjoined to form plural liquid paths respectively communicating with plural discharge apertures. The first substrate is provided with energy conversion elements, for converting electrical energy into energy for discharging liquid in the liquid paths, respectively corresponding to the liquid paths. The second substrate is provided with detection elements, for detecting a state of the liquid in said liquid paths, respectively corresponding to the liquid paths, and amplification means for respectively amplifying outputs of said detection elements.
Claims6
A liquid discharge head comprising:
- a discharge port for discharging liquid;
- first and second substrates which are mutually adjoined to form a liquid flow path communicating with said discharge port;
- an energy converting member disposed in said liquid flow path, for converting electrical energy into energy for discharging liquid in said liquid flow path;
- an element for use in providing driving control of said energy converting member;
- a gold bump providing a projecting electrical connecting portion for electrical connection with said element, the gold bump being provided on one of said first and second substrates;
- and
- a recessed electrical connecting portion receiving said gold bump and electrically connected with the gold bump, the recessed electrical portion being provided on the other of said first and second substrates,
- wherein V1 is equal to or less than V2 where V1 is a volume of the gold bump before said gold bump is electrically connected with said recessed electrical connecting portion, and V2 is an empty volume of said recessed electrical connecting portion, and
- wherein electrical connection between said gold bump and said recessed electrical connecting portion is performed by fusing said gold bump.
Dependencies are inferred from the claim text.