Method of forming a multi-channel array printhead body of a drop-on-demand ink-jet printhead

摘要

A method of forming a multi-channel array printhead body of a drop-on-demand inkjet printhead, comprising the steps of forming a multiplicity of parallel channels in a substrate and depositing a patterning material on facing side walls of said channels, the method being characterised by the steps of, applying a film of thermoplastic material to said substrate, applying energy to heat said film at a surface thereof facing said substrate thereby to bond said film to said substrate, machining through said film and penetrating said substrate to form said channels, and following deposition of said patterning material, removing from said substrate said film remaining thereon.