Invention Grant
- Patent Title: Toner compositions including silica blends and method to make the same
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Application No.: US14142373Application Date: 2013-12-27
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Publication No.: US10606181B2Publication Date: 2020-03-31
- Inventor: Kasturi Rangan Srinivasan , Rick Owen Jones , Courtney Harrison Soale , Devon Jean Vaccaro Strain , Ligia Aura Bejat
- Applicant: Lexmark International, Inc.
- Applicant Address: US KY Lexington
- Assignee: Lexmark International, Inc.
- Current Assignee: Lexmark International, Inc.
- Current Assignee Address: US KY Lexington
- Main IPC: G03G9/087
- IPC: G03G9/087 ; G03G9/097

Abstract:
The toner composition of the present invention and method to make the same includes toner particles mixed with a specific set of extra particulate additives including large colloidal silica sized 90 nm to 120 nm and having a conductivity of less than 20 μs/cm in combination with medium size silica particles sized 30 nm to 60 nm. Optionally, additional extra particular additives such as silica sized 2 nm to 20 nm, alumina, titania or mixtures thereof can be used. The finished toner having these specific additives exhibited superior printing performance.
Public/Granted literature
- US20150185647A1 Toner Compositions Including Silica Blends and Method to Make the Same Public/Granted day:2015-07-02
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