Herein is described a liquid electrostatic ink composition comprising a carrier liquid, a resin, a colorant selected from a magenta colorant, a cyan colorant and a black colorant, an amine-containing basic dispersant having a total base number (TBN) in the range of about 10 to about 65 mgKOH/g material, the amine-containing basic dispersant present in an amount from about 5 wt. % to about 40 wt. % by total weight of colorant.

Described herein is a security LEP ink composition comprising an absorber, a resin; and a carrier liquid for printing a security image.

Described herein is a security LEP ink composition comprising an absorber, a resin; and a carrier liquid for printing a security image.

Disclosed herein is an electrostatic ink composition. The composition may comprise a carrier liquid, which has suspended therein: thermochromic pigment particles having a layer of thermoplastic resin thereon. Method for forming electrostatic ink composition and a substrate having the electrostatic ink composition printed thereon are also disclosed herein.

The present disclosure discloses a liquid electrophotographic ink. The ink can include (A) a liquid vehicle; (B) at least one colorant; (C) a resin comprising an ethylene acid copolymer; (D) an ethylene/(meth)acrylic acid C1-10 alkyl ester copolymer selected from the group consisting of an ethylene/methyl acrylate copolymer and an ethylene/butyl acrylate copolymer; and (E) a condensation product of urea and aldehyde.

A method for producing a liquid developer containing a resin binder containing a resin having an acidic group, a colorant, a basic dispersant, and an insulating liquid, including: step I: stirring raw materials containing the resin binder, the colorant, and the basic dispersant at a temperature of equal to or higher than a glass transition temperature of the resin binder; and step II: adding dropwise from 50 to 500 parts by mass of the insulating liquid to a stirred mixture of the step I, based on 100 parts by mass of the stirred mixture at a temperature of equal to or higher than a glass transition temperature of the resin binder, thereby carrying out a phase inversion emulsification, to provide a dispersion of toner particles. The liquid developer obtainable by the method of the present invention is suitably used in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.

Described herein is a method for priming a print substrate for subsequently receiving a liquid electrophotographic (LEP) inkin which a surface of a print substrate is coated with a first primer using an analogue printing technique and a second primer is digitally printed to the surface of the print substrate coated with the first primer.

Described herein is a method for priming a print substrate for subsequently receiving a liquid electrophotographic (LEP) inkin which a surface of a print substrate is coated with a first primer using an analogue printing technique and a second primer is digitally printed to the surface of the print substrate coated with the first primer.

A method of electrostatic printing may include forming a latent electrostatic image on a surface and transferring a first volume of a charged toner to the latent electrostatic image on the surface. The method may also include transferring a second volume of a charged toner to the surface, such that a toner image including the first volume of charged toner and the second volume of charged toner is formed on the surface, the second volume of charged toner being disposed on the first volume of charged toner. The method may also include transferring the image to a print substrate.

A method of electrostatic printing may include forming a latent electrostatic image on a surface and transferring a first volume of a charged toner to the latent electrostatic image on the surface. The method may also include transferring a second volume of a charged toner to the surface, such that a toner image including the first volume of charged toner and the second volume of charged toner is formed on the surface, the second volume of charged toner being disposed on the first volume of charged toner. The method may also include transferring the image to a print substrate.