Mineral acids as charge adjuvants for positive liquid...

Details Mineral acids as charge adjuvants for positive liquid... Mineral acids as charge adjuvants for positive liquid...

G - Physics

03

G

G03G 9/135 (2006.01)

Patent

CA 2042095

34 DX-0025 TITLE MINERAL ACIDS AS CHARGE ADJUVANTS FOR POSITIVE LIQUID ELECTROSTATIC DEVELOPERS ABSTRACT OF THE INVENTION A positive charged electrostatic liquid developer consisting essentially of (A) a non-polar liquid having a Kauri-butanol value of less than 30, (B) thermoplastic resin particles, average by area particle size of less than 10 µm, (C) a charge director compound, and (D) at least one inorganic acid having a solubility of at least 0.5% based on the weight of charge director compound in a mixture of (A) and (C) and represented by the formula: HxY wherein x is an integer from 1-4 and is equal to the negative charge on the anion, Y is a moiety selected from the group consisting of Cl-, F-, NO3-, NO2-, PO4-3, SO4-2, SO3-2, ClO4-, and IO4-. The liquid developer is useful in copying, color proofing, digital color proofing, making lithographic printing plates, and resists. 34

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