Ink jet head

Details Ink jet head Ink jet head

2006-07-18

2006-07-18

Shah, Manish S. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S020000, C347S063000

Reexamination Certificate

active

07077503

ABSTRACT:
An ink jet head according to the present invention includes multiple discharge ports for discharging ink, multiple ink flow paths for communicating with the discharge ports, and heat generating elements for generating bubbles in ink filling the ink flow paths. For each ink flow path, two heat generating elements are arranged therein, and the discharge port is arranged along a line that is extended, from the center of a pressure generation region formed by the two heat generating elements, in the normal direction relative to the surface of the substrate. The arrangement pitch of the heat generating elements is equal to or greater than 600 dpi, and the interval dhn between a partition wall defining an ink flow path and the heat generating element adjacent to the partition wall is equal to or smaller than 4 μm.

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