Ink jet printer firing assembly with flexible film expeller

Details Ink jet printer firing assembly with flexible film expeller Ink jet printer firing assembly with flexible film expeller

1996-02-13

1998-09-22

Wong, Peter S.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 71, 310327, B41J 2045, H01L 4104

Patent

active

058121633

ABSTRACT:
An ink jet printing apparatus having an orifice plate at least in part defining a chamber, and at least in part defining a nozzle providing fluid communication out of the chamber, and an ink inlet connected between the chamber and a supply of ink. A multilayer flexible firing film is attached to the orifice plate and at least in part defines the chamber, such that the film provides a wall of the chamber. The film has a first layer facing the chamber and connected to the orifice plate, and a second layer laminated to the first layer and spaced apart at least slightly from the orifice plate. At least one of the first and second layers is dimensionally responsive to an application of energy, such that the area of said layer changes in response to the application of energy, whereby the film may flex between a firing position in which the film is flexed toward the orifice plate to expel ink from the nozzle, and a refilling position in which the film is flexed away from the orifice plate to draw ink via the inlet into the chamber.

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