- Patent Title: Pigment-based ink formulations having improved printhead lifetime
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Application No.: US16549570Application Date: 2019-08-23
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Publication No.: US11441044B2Publication Date: 2022-09-13
- Inventor: Simon Fielder , Alison Chong , David Tyvoll , Tim Hudson , Roger Davey , Ellaine Munton
- Applicant: Memjet Technology Limited
- Applicant Address: IE Dublin
- Assignee: Memjet Technology Limited
- Current Assignee: Memjet Technology Limited
- Current Assignee Address: IE Dublin
- Agency: Cooley LLP
- Main IPC: C09D11/38
- 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.
Public/Granted literature
- US20200062981A1 PIGMENT-BASED INK FORMULATIONS HAVING IMPROVED PRINTHEAD LIFETIME Public/Granted day:2020-02-27
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IPC分类:
