公开(公告)号：US20230058983A1

公开(公告)日：2023-02-23

申请号：US17891477

申请日：2022-08-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Homare KURIBAYASHI ,  Masato HANAMURA ,  Koji IMAMURA ,  Koki YAMAKAWA ,  Hirokazu YAMAGA

IPC: B05B7/14

Abstract: A powder suction and discharge apparatus including a pipe, a container that is coupled to the pipe, a valve that opens and closes a passage of the pipe, and a pressure reducing mechanism that causes an internal space of the container to have negative pressure, in which in a first state in which the valve is open and the pressure reducing mechanism is driven, powder is sucked into the container through the pipe, in a second state in which the valve is closed, the sucked powder is stored in the container, and in a third state in which the valve is open, the stored powder is discharged through the pipe.

公开(公告)号：US20210095151A1

公开(公告)日：2021-04-01

申请号：US17042067

申请日：2019-02-06

Applicant: Seiko Epson Corporation

Inventor： Kei HIRUMA ,  Homare KURIBAYASHI ,  Shotaro WATANABE ,  Koji IMAMURA ,  Masato HANAMURA ,  Jungo ASANO

IPC: C09D11/328 ,  C09D11/38 ,  C08K3/08 ,  C08K5/092 ,  D06P5/00 ,  D06P5/30

Abstract: A composition for aqueous ink contains water and a coloring material, wherein the calcium ion content x (ppm) and the oxalate ion content y (ppm) in the composition for aqueous ink jet satisfy the relation of y≤3491.8x−3.386.