公开(公告)号：US20200062981A1

公开(公告)日：2020-02-27

申请号：US16549570

申请日：2019-08-23

Applicant: Memjet Technology Limited

Inventor： Simon Fielder ,  Alison Chong ,  David Tyvoll ,  Tim Hudson ,  Roger Davey ,  Ellaine Munton

IPC: C09D11/38 ,  C09D11/322 ,  B41J2/14

Abstract: An aqueous-based inkjet ink for a thermal inkjet printhead includes: a pigment; 2 to 90 ppm ammonium ions; and an ink vehicle. The ink has a pH in the range of 8 to 9.5 and exhibits improved lifetime in thermal inkjet printheads with minimal loss of print quality.

公开(公告)号：US11441044B2

公开(公告)日：2022-09-13

申请号：US16549570

申请日：2019-08-23

Applicant: Memjet Technology Limited

Inventor： Simon Fielder ,  Alison Chong ,  David Tyvoll ,  Tim Hudson ,  Roger Davey ,  Ellaine Munton

IPC: C09D11/38 ,  B41J2/14 ,  C09D11/322

Abstract: An aqueous-based inkjet ink for a thermal inkjet printhead includes: a pigment; 2 to 90 ppm ammonium ions; and an ink vehicle. The ink has a pH in the range of 8 to 9.5 and exhibits improved lifetime in thermal inkjet printheads with minimal loss of print quality.