Invention Grant
- Patent Title: Composite color and method of making the same
- Patent Title (中): 复合颜色和制作方法
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Application No.: US11497827Application Date: 2006-08-02
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Publication No.: US07670417B2Publication Date: 2010-03-02
- Inventor: Jayprakash C. Bhatt , Cory J. Ruud , Sundar Vasudevan
- Applicant: Jayprakash C. Bhatt , Cory J. Ruud , Sundar Vasudevan
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Main IPC: C09D11/00
- IPC: C09D11/00 ; G01D11/00
Abstract:
A composite color includes a first colored ink and a second colored ink. The first colored ink exhibits a color that is different from that exhibited by the second colored ink. The first colored ink includes pigment particles either formulated at a basic pH so that a surface of the pigment particles carries a net negative charge or formulated at an acidic pH so that a surface of the pigment particles carries a net positive charge; and the second colored ink includes pigment particles either formulated at an acidic pH so that a surface of each of the pigment particles carries a net positive charge or formulated at a basic pH so that a surface of the pigment particles carries a net negative charge. The first colored ink and the second colored ink have opposite charges. The composite color exhibits enhanced color richness when printed on a substrate.
Public/Granted literature
- US20080030561A1 Composite color and method of making the same Public/Granted day:2008-02-07
Information query
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