Abstract: Positively charged ink compositions, its use and method of making the same are disclosed. A disclosed example of the positively charged ink compositions includes a combination of a carrier liquid, basic pigment-loaded resin particles, a charge director and an acidic charge adjuvant.

Abstract: Described herein is a method for electrostatic printing comprising: (i) providing an ink composition comprising: a hydrocarbon carrier liquid and particles comprising a resin and a colorant, and wherein the ink composition contains less than 0.3 mg of charge director per g of solids in the ink composition; (ii) adding a charge director to the ink composition, such that the total amount of charge director in the ink composition is at least 0.6 mg per g of solids in the ink composition, and, (iii) within a predetermined time of adding the charge director, printing the ink onto a print medium in an electrostatic printing process, wherein the predetermined time is 90 minutes or less. Also described herein is a packaged ink composition, and method for producing it.

Abstract: The present invention provides an electrostatic ink composition comprising a carrier liquid, a resin, a pigment and a conductive polymer. Method for producing the electrostatic ink composition and methods for printing the composition are also disclosed.

Abstract: Toner compositions, treated fluoropolymer particles, methods of making treated fluoropolymer particles, and the like, are disclosed.

Abstract: A dual color electronically addressable ink includes a non-polar carrier fluid; a first colorant of a first color; and a second colorant of a second color that is different than the first color. The first colorant includes a first particle core, and a first functional group attached to a surface of the particle core. The first functional group is capable of carrying a positive charge and is chosen from a base or a salt of the base. The second colorant includes a particle core, and a second functional group attached to a surface of the particle core. The second functional group is capable of carrying a negative charge and is chosen from an acid or a salt of the acid. The ink further includes an additive chosen from polyhydroxystearic amide salt, polyhydroxystearic acid, aromatic butyric acid, and combinations thereof.

Abstract: The present disclosure is drawn to an electrostatic ink composition comprising: (a) a carrier liquid; (b) particles comprising: (i) a polymer having a melt flow rate of less than 60 g/10 minutes, (ii) a colorant, (c) a charge director, wherein the electrostatic ink composition excludes a positively charged organic molecule or an organic molecule capable of becoming a positively charged organic molecule during an electrostatic printing process. Also disclosed herein is a method of producing a electrostatic ink composition and a method of electrophotographic printing an electrostatic ink composition.

Abstract: A system and method for determining LEP ink conductivity are provided. A pair of electrodes is arranged to define a narrow gap there between. A non-conductive propeller rotates within the gap and causes liquid ink to flow over respective planar surfaces of the electrodes. The rotating propeller further prevents the accumulation of ink sludge on the planar surfaces of the electrodes within the gap. Electrical current is conducted between the electrodes. The electrical current is measured and the conductivity value of the ink determined there from.

Abstract: The present disclosure provides for liquid electrophotographic inks having charge stabilizers and associated methods. In one example, a liquid electrophotographic ink can comprise a carrier liquid, a resin, a pigment, a negative charge director, and a charge stabilizer having a reduction potential of 0.16 v to 3.0 v.

Abstract: A dual color electronically addressable ink includes a positively charged ink and a negatively charged ink. The positively charged ink includes a non-polar carrier fluid, pigment-loaded basic resin particles having a first color, and an acceptor charge adjuvant. The negatively charged ink includes the non-polar carrier fluid, pigment-loaded acidic resin particles having a second color that is different than the first color, and a donor charge adjuvant. The dual color electronically addressable ink also includes at least one charge director.

Abstract: A dual color electronically addressable ink includes a non-polar carrier fluid; a first colorant of a first color; and a second colorant of a second color that is different than the first color. The first colorant includes a first particle core, and a first functional group attached to a surface of the particle core. The first functional group is capable of carrying a positive charge and is chosen from a base or a salt of the base. The second colorant includes a particle core, and a second functional group attached to a surface of the particle core. The second functional group is capable of carrying a negative charge and is chosen from an acid or a salt of the acid. The ink further includes an additive chosen from polyhydroxystearic amide salt, polyhydroxystearic acid, aromatic butyric acid, and combinations thereof.

Abstract: A dual color electronically addressable ink includes a positively charged ink and a negatively charged ink. The positively charged ink includes a non-polar carrier fluid, pigment-loaded basic resin particles having a first color, and an acceptor charge adjuvant. The negatively charged ink includes the non-polar carrier fluid, pigment-loaded acidic resin particles having a second color that is different than the first color, and a donor charge adjuvant. The dual color electronically addressable ink also includes at least one charge director.

Abstract: Positively charged ink compositions, its use and method of making the same are disclosed. A disclosed example of the positively charged ink compositions includes a combination of a carrier liquid, basic pigment-loaded resin particles, a charge director and an acidic charge adjuvant.

Abstract: Toner compositions, treated fluoropolymer particles, methods of making treated fluoropolymer particles, and the like, are disclosed.

Abstract: Ink toners, methods of making ink, and methods of changing viscosity are disclosed.

Abstract: Ink toners, methods of making ink, and methods of changing viscosity are disclosed.