Ink jet printing process
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United States of America Patent
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Dec 7, 2004
Grant Date -
Mar 11, 2004
app pub date -
Aug 30, 2002
filing date -
Aug 30, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ink jet printing process having the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with ink jet recording elements having a support having thereon an image-receiving layer; C) loading the printer with an ink jet ink composition of water, humectant and a self-assembling colorant that is capable of spontaneously forming a nanoparticulate dispersion without any prior physical attrition or surface modification, the colorant having the formula: (A).sub.m --Q--(Z).sub.n wherein: Q represents a chromophore; each A independently represents an organic or inorganic group capable of hydrogen bonding or other non-covalent bonding; each Z independently represents an organic or inorganic group capable of electrostatic bonding; and m and n each independently represents an integer from 0 to 10; with the proviso that n+m is at least 1; and with the further proviso that at least about 50 wt. % of the colorant is present in the composition as particles; and D) printing on the image-receiving layer using the ink jet ink in response to the digital data signals.
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