Ink jet recording head and manufacture method for the same
AssigneeCanon Kabushiki Kaisha
InventorsKazuhiro Hayakawa, Makoto Terui
Life of this patent
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Abstract
An ink jet recording head and its manufacture method are provided having a sufficient and uniform ink refill for all orifices and separate flow paths regardless of that the substrate has a high rigidity by dividing a support port into a plurality of ports. The substrate of the ink jet recording head has a plurality of separate flow paths corresponding to discharge pressure generating elements, a common flow path communicating with the separate flow paths, an ink supply port communicating with the common flow path and supplying ink to the common flow path, and a plurality of beam portions dividing the ink supply port. A recess is formed on the common flow path, extending to the separate flow paths formed nearest to the beam portion.
Claims10
An ink jet recording head comprising:
- an orifice plate having orifices for discharging ink;
- a substrate having a plurality of discharge pressure generating elements for discharging ink from said orifices and an ink supply port for supplying ink to said charge pressure generating elements;
- a plurality of separate flow paths corresponding to said discharge pressure generating elements;
- and
- a common flow path communicating with said separate flow paths and said ink supply port, wherein:
- said substrate includes a plurality of beam portions formed to divide said ink supply port;
- and
- a recess is formed in a region corresponding to said common flow path of said substrate, said recess extending to said separate flow paths formed nearest to said beam portion.
An ink jet recording head manufacturing method comprising steps of:
- preparing a substrate having a plurality of discharge pressure generating elements;
- forming a plurality of ink supply ports in said substrate divided by beam portions;
- forming a plurality of separate flow paths corresponding to said discharge pressure generating elements and a common flow path communicating with said separate flow paths and said ink supply port in said substrate and forming an orifice plate having orifices for discharging ink on said substrate;
- and
- forming a recess in said common flow path, said recess extending to said separate flow paths formed nearest to said beam portion.
Dependencies are inferred from the claim text.