Patent ID: 7887233
Filing Date: 2011-02-15
Classification: B41J,B81B,B81C,F03G,F05C,H01H

Abstract:
1. A method for selecting a material for a thermal bend actuator of a printhead nozzlel, the method including the steps of: selecting the material from the group including silicides and carbides of titanium; borides, silicides, carbides and nitrides of tantalum, molybdenum, niobium, chromium, tungsten, vanadium, and zirconium; and selecting the material on the basis of ε, wherein ε is a dimensionless constant for the material in accordance with the formula wherein E is Young's module of the material; γ is the coefficient of thermal expansion; T is the maximum operating temperature, ρ is the density and C is the specific heat capacity.