CONTINUOUS STATIC MIX PROCESS FOR PREPARING TIJ INKS
Original Publication Date: 1995-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
Disclosed is an apparatus and continuous process for the preparation of Thermal Ink Jet (TIJ) inks. The apparatus comprises several metering pumps, a static mixer, and a 10 inch cartridge filter. The pumps are set to deliver known quantities of each starting material, such as water, glycols, pigment suspensions or dye solutions, humectant, and the like. Pulse dampeners are used to reduce pump induced pulsation of each liquid stream. All starting materials enter the static mixer at the same point and at the same time. Starting materials are mixed in the static mixer to form the T.I.J. ink. A back pressure valve is placed in line after the static mixer stage to assure proper operation of the pumps. The resultant ink stream is filtered, in embodiments, through a 0.2 micron 10 inch cartridge filter and collected in a suitable container.