US 8,883,264 B2 · Method of powder coating and powder-coated fuser member

Abstract

Methods for powder coating that include applying a powder coating composition to a substrate via an electrostatic gun. The powder coating composition includes a mixture of two or more materials having different densities, such as a mixture of aerogel particles and fluoropolymer-containing particles. The electrostatic gun can have a high-voltage generator that generates a negative polarity voltage between about 0 KV and about 100 KV during application of the powder coating composition, and the electrostatic gun can have a round spray nozzle. Methods of making fuser members using such powder coating methods, fuser members prepared by such methods, and methods of preparing low gloss images using such fuser members.

Claims20

Dependent claims

A method for powder coating comprising:

mixing a powder coating composition using an acoustic mixing process to form a homogeneous dry powder;
and
applying the homogeneous dry powder to a substrate via an electrostatic gun to form an outer layer having a surface gloss of between about 5 ggu and about 45 ggu when measured at 75° C.,
wherein the powder coating composition comprises a mixture of a first material and a second material and the first and second materials have different densities,
wherein the substrate is grounded, and
wherein the electrostatic gun comprises at least one electrode and a high-voltage generator, and the high-voltage generator generates a negative polarity voltage between about 0 KV and about 100 KV that is applied to the electrode during application of the homogeneous dry powder.

3 more elements

Dependencies are inferred from the claim text.

Method of powder coating and powder-coated fuser member

Life of this patent

Method of powder coating and powder-coated fuser member

Life of this patent

Abstract

Claims20