Ink jet head and ink jet recording apparatus
First Claim
1. An ink jet head comprising:
- a plurality of grooves arranged side by side so as to communicate with nozzle openings;
an ink chamber for supplying ink to each of the grooves;
an ink sump provided so as to communicate with the ink chamber; and
ink storage means communicating with the ink sump through ink supply passages, wherein there is provided an air duct establishing communication between a region in the ink sump which is substantially free from interference with an ink flow from the ink supply passages to the ink chamber and in which bubbles easily gather and an air region of the ink storage means.
1 Assignment
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Accused Products
Abstract
To provide an ink jet head and an ink jet recording apparatus in which it is possible to reliably prevent ink bubbles from staying in the ink sump and the interior of the head chip and in which it is relatively easy to remove the bubbles. The ink jet head includes: a plurality of grooves arranged side by side so as to communicate with nozzle openings; an ink chamber for supplying ink to each of the grooves; an ink sump provided so as to communicate with the ink chamber; and ink storage unit (50) communicating with the ink sump through ink supply passages, in which there is provided an air duct (100) establishing communication between a region in the ink sump which is substantially free from interference with an ink flow from the ink supply passages (33) to the ink chamber and in which bubbles easily gather and an air region of the ink storage unit (50). Therefore, the bubbles in the ink can be surely removed.
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Citations
6 Claims
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1. An ink jet head comprising:
- a plurality of grooves arranged side by side so as to communicate with nozzle openings;
an ink chamber for supplying ink to each of the grooves;
an ink sump provided so as to communicate with the ink chamber; and
ink storage means communicating with the ink sump through ink supply passages,wherein there is provided an air duct establishing communication between a region in the ink sump which is substantially free from interference with an ink flow from the ink supply passages to the ink chamber and in which bubbles easily gather and an air region of the ink storage means. - View Dependent Claims (2, 3, 4, 5, 6)
- a plurality of grooves arranged side by side so as to communicate with nozzle openings;
Specification