US 12,070,948 B2
Head chip, liquid jet head, liquid jet recording device, and method of manufacturing head chip
Tooru Mine, Chiba (JP); and Suguru Munakata, Chiba (JP)
Assigned to SII PRINTEK INC., Chiba (JP)
Filed by SII Printek Inc., Chiba (JP)
Filed on Oct. 13, 2022, as Appl. No. 17/965,579.
Claims priority of application No. 2021-168613 (JP), filed on Oct. 14, 2021.
Prior Publication US 2023/0120427 A1, Apr. 20, 2023
Int. Cl. B41J 2/14 (2006.01)
CPC B41J 2/1433 (2013.01) 11 Claims
OG exemplary drawing
 
1. A head chip comprising:
an actuator plate in which a plurality of jet channels extending in a first direction is arranged in a second direction crossing the first direction;
a jet hole plate which has a plurality of jet holes configured to jet liquid, and which is disposed so as to be opposed to a channel opening surface on which the jet channels open in the actuator plate; and
an intermediate plate which has communication holes configured to respectively communicate the jet channels and the jet holes with each other, and which is disposed between the actuator plate and the jet hole plate, wherein
the communication holes each include
a groove part which has a first opening part opening toward the jet hole, and which is recessed toward a direction getting away from the jet hole plate, and
a penetrating part which has a second opening part opening toward the jet channel, and which is communicated with the groove part in an area including at least the groove part to thereby penetrate the intermediate plate,
a dimension in the second direction in the first opening part is larger than a dimension in the second direction in the second opening part, and
a dimension in the second direction in the second opening part is no larger than a dimension in the second direction of a channel opening part opening on the channel opening surface in the jet channel.