Inkjet printhead heater chip with asymmetric ink vias
First Claim
1. An inkjet printhead, comprising:
- a substantially rectangular heater chip having two long and short ends and at least three substantially parallel ink vias, said at least three substantially parallel ink vias being disposed closer to one of said two short ends.
3 Assignments
0 Petitions
Accused Products
Abstract
An inkjet printhead heater chip has an ink via asymmetrically arranged in a reciprocating direction of inkjet printhead movement. The ink via has two sides and a longitudinal extent substantially parallel to a print medium advance direction. A column of fluid firing elements exists exclusively along a single side of the two sides. The heater chip and ink via each have a centroid and neither resides coincidentally with one another. Preferably, the heater chip centroid resides externally to a boundary of the ink via. In other aspects, the column of fluid firing elements can be a sole column or plural and may be centered in the reciprocating direction. The ink via can be a sole via or plural. The heater chip can be rectangular and the ink vias can be closer to either the long or short ends thereof. Inkjet printers for housing the printheads are also disclosed.
22 Citations
19 Claims
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1. An inkjet printhead, comprising:
a substantially rectangular heater chip having two long and short ends and at least three substantially parallel ink vias, said at least three substantially parallel ink vias being disposed closer to one of said two short ends. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A heater chip for an inkjet printhead, comprising:
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a length and width dimension defining a substantially rectangular periphery;
at least five ink vias having a longitudinal extent substantially parallel to the width dimension; and
a spacing between adjacent ink vias of the at least five ink vias, at least one spacing being substantially unequal to another spacing. - View Dependent Claims (8, 9, 10)
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11. An inkjet printhead, comprising:
a substantially rectangular heater chip having two long and short ends and a sole ink via arranged closer to one of the two short ends. - View Dependent Claims (12, 13, 14)
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15. An asymmetrically arranged heater chip, comprising:
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two long and two short ends defining a substantially rectangular periphery, a planar middle existing substantially half way between each of the long and short ends; and
an ink via having a planar center substantially offset from the planar middle in both a length and width dimension such that a longitudinal extent of the ink via is closer to one of the long ends and a terminal end of the ink via is closer to one of short ends. - View Dependent Claims (16, 17, 18, 19)
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Specification