Patent Number: 6,254,220

Title: Shutter based ink jet printing mechanism

Abstract: An ink jet printer uses a shutter based ink jet nozzle. An ink chamber having an oscillating ink pressure is interconnected to a nozzle chamber, which includes a grilled shutter having a first open state permitting the expulsion of ink from the nozzle and a second closed state substantially restricting the expulsion of ink from the nozzle. A shutter activator drives, on demand, the grilled shutter from a closed to open state. A lock is provided to lock the grilled shutter in an open or closed state as required. The shutter activator can be a thermal actuation device having two arms, one arm having a thermal jacket of low thermal conductivity and a thinned portion to increase the travel of the actuator upon activation.

Inventors: Silverbrook; Kia (Sydney, AU)

Assignee: Silverbrook Research Pty Ltd

International Classification: B41J 11/70 (20060101); B41J 2/14 (20060101); B41J 15/04 (20060101); B42D 15/10 (20060101); B41J 2/16 (20060101); B41J 2/175 (20060101); B41J 3/42 (20060101); B41J 11/00 (20060101); G06F 1/16 (20060101); G06K 1/12 (20060101); G07F 7/12 (20060101); G06K 1/00 (20060101); G06K 19/073 (20060101); G06K 19/06 (20060101); G06K 7/14 (20060101); G11C 11/56 (20060101); G07F 7/08 (20060101); H04N 1/32 (20060101); H04N 5/262 (20060101); H04N 5/225 (20060101); H04N 1/21 (20060101); B41J 2/165 (20060101); H04N 1/00 (20060101); B41J 002/015 (); B41J 002/135 (); B41J 002/04 (); B41J 002/14 ()

Expiration Date: 07/03/2018