Methods of printing and electrostatic ink compositions
AssigneeHP Indigo B.V.
InventorsFernanda Orlik, Igor Shotri, Albert Teishev
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Abstract
Here is described a method of printing on a plastic substrate, the method comprising: providing an electrostatic ink composition comprising a carrier liquid, and particles comprising a resin, and a slip agent dispersed in the carrier liquid; forming a latent electrostatic image on a surface; contacting the surface with the electrostatic ink composition, such that at least some of the particles and the slip agent are transferred to the surface to form a developed toner image on the surface; and transferring the toner image to the plastic substrate. Electrostatic ink compositions and plastic substrates are also disclosed.
Claims20
A method of printing on a plastic substrate, the method comprising
- providing an electrostatic ink composition comprising a carrier liquid and particles, wherein the particles comprise both a resin and a castor oil derivative slip agent together in the same particles, wherein the particles are dispersed in the carrier liquid, wherein the castor oil derivative slip agent constitutes from 1 to 6 wt % of the solids content of electrostatic ink composition;
- forming a latent electrostatic image on a surface;
- contacting the surface with the electrostatic ink composition, such that at least some of the particles are transferred to the surface to form a developed toner image on the surface;
- and
- transferring the toner image to the plastic substrate.
A method of printing on a plastic substrate, the method comprising
- providing an electrostatic ink composition comprising a carrier liquid and particles, wherein the particles comprise both a resin and a castor oil derivative slip agent together in the same particles, wherein the particles are dispersed in the carrier liquid, wherein the castor oil derivative slip agent has a molecular weight from about 900 g/mol to about 960 g/mol;
- forming a latent electrostatic image on a surface;
- contacting the surface with the electrostatic ink composition, such that at least some of the particles are transferred to the surface to form a developed toner image on the surface;
- and
- transferring the toner image to the plastic substrate.
A method of printing on a plastic substrate, the method comprising
- providing an electrostatic ink composition comprising a carrier liquid and particles, wherein the particles comprise both a resin and a castor oil derivative slip agent together in the same particles, wherein the particles are dispersed in the carrier liquid, wherein the castor oil derivative slip agent has a melting point from about 80° C. to about 95° C.;
- forming a latent electrostatic image on a surface;
- contacting the surface with the electrostatic ink composition, such that at least some of the particles are transferred to the surface to form a developed toner image on the surface;
- and
- transferring the toner image to the plastic substrate.
Dependencies are inferred from the claim text.