What keeps pigment ink on paper

Started Jul 21, 2019 | Discussions thread
NAwlins Contrarian Veteran Member • Posts: 5,287
Paul Roark says inks have binders.

[W]hat keep pigment ink on paper? What prevents it from falling off the surface once dry, especially with matte papers?

I know that I don't know, but I know that Paul Roark is an expert with inkjet printing, at least / especially B&W. He reports that inks need binders to adhere to glossy / coated inkjet papers, but not to matte papers. To quote one of his papers:

Because there is no binder in this generic base, inksets make with is are very clog-free. Binders needed for glossy inks are a type of glue that is a major factor in inkjet clogging.

Significantly, the Canon and HP pigments have a coating that is compatible with the generic base with no binders because the HP and Canon pigments have their own coating technology that binds the particles to the glossy papers.

See http://www.paulroark.com/BW-Info/Ink%20Mixing%20Generally.pdf.

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