公开(公告)号：US10513117B2

公开(公告)日：2019-12-24

申请号：US15924695

申请日：2018-03-19

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama ,  Takeshi Sugiyama ,  Daichi Nishikawa ,  Eriko Maeda

IPC: B41J2/14 ,  B41J2/16

Abstract: According to an embodiment, an ink jet head (liquid ejecting head) includes an actuator plate and a cover plate (see FIG. 8). As illustrated in FIG. 1, channel grooves for a discharge channel (ejection channel) and a non-discharge channel (non-ejection channel) in a Z-direction are formed on a front surface of the actuator plate, so as to be alternately arranged in an X-direction, by cutting with a dicing blade or the like. The discharge channel and the non-discharge channel are formed to have a groove width W of smaller than 70 μm, in order to correspond to high density of nozzles. In the embodiment, the discharge channel and the non-discharge channel are formed to have a groove width of 55 μm, 50 μm, or 40 μm, for example.

公开(公告)号：US10471716B2

公开(公告)日：2019-11-12

申请号：US15883919

申请日：2018-01-30

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14 ,  B41J2/16 ,  B41J2/145 ,  H01L41/047 ,  H01L41/09 ,  H01L41/187 ,  H01L41/29 ,  H01L41/332 ,  H01L41/338

Abstract: According to an embodiment, a liquid ejecting head chip includes an actuator plate and an in-channel electrode. In the actuator plate, a plurality of channels are arranged at a distance in an X-direction. Each of the channels includes an extension portion and a raise-and-cut portion. The extension portion extends in a Z-direction. The raise-and-cut portion continues from the extension portion toward one side of the Z-direction and has a groove depth which is gradually reduced toward the one side of the Z-direction. The in-channel electrode is formed on an inner surface of each of the channels, with a plating film.

公开(公告)号：US10279591B2

公开(公告)日：2019-05-07

申请号：US15924725

申请日：2018-03-19

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama ,  Takeshi Sugiyama ,  Daichi Nishikawa ,  Eriko Maeda

IPC: B41J2/16 ,  B41J2/14 ,  C23C18/16 ,  C23C18/32 ,  C23C18/42 ,  G03F7/16 ,  H01L41/047 ,  H01L41/09 ,  H01L41/29 ,  H01L41/187

Abstract: A discharge channel and a non-discharge channel are formed to have a similar shape, that is, to include extension portions and raise-and-cut portions continuing from end portions of both the extension portions, respectively. Then, imparting of a catalyst, washing of an unnecessary catalyst, plating, and the like are performed on a target surface, as a plating step. In an embodiment, an electrode clearance groove is formed after the plating step. Since channel grooves for the discharge channel and the non-discharge channel have a similar shape, it is possible to cause a water flow to uniformly flow in the channels when washing is performed, and thus to avoid an occurrence of a situation in which a lump is formed in the channel groove by plating.

公开(公告)号：US10195849B2

公开(公告)日：2019-02-05

申请号：US15924707

申请日：2018-03-19

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama ,  Takeshi Sugiyama ,  Daichi Nishikawa ,  Eriko Maeda

IPC: B41J2/14 ,  B41J2/16

Abstract: Channel grooves for a discharge channel and a non-discharge channel are formed in the surface of an actuator plate by cutting. The discharge channel includes an extension portion and a raise-and-cut portion, and the non-discharge channel also includes an extension portion and a raise-and-cut portion. In an embodiment, an electrode clearance groove is formed in advance by cutting with a dicing blade or the like. After the electrode clearance groove is formed, an electrode is formed by plating. Since plating is performed after the electrode clearance groove is formed, a clearance groove electrode is integrally formed with an AP-side common pad in the electrode clearance groove, and thus the clearance groove electrode and the AP-side common pad are short-circuited. Thus, an electrode separation portion is formed by cutting a short-circuited portion of the clearance groove electrode and the AP-side common pad through cutting or irradiation with laser.