Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2007-07-30
2010-11-30
Stephens, Juanita D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S054000, C347S047000
Reexamination Certificate
active
07841695
ABSTRACT:
A printhead integrated circuit for an inkjet printer that has a monolithic wafer substrate supporting an array of droplet ejectors for ejecting drops of printing fluid onto print media. Each droplet ejector has nozzle and an actuator for ejecting a drop of printing fluid the nozzle. The array is formed on the monolithic wafer substrate by a succession of photolithographic etching and deposition steps involving a photo-imaging device that exposes an exposure area to light focused to project a pattern onto the monolithic substrate. The array has more than 10000 of the droplet ejectors configured to be encompassed by the exposure area. The invention arranges the nozzle array such that the droplet ejector density is very high and the number of exposure steps required is reduced.
REFERENCES:
patent: 6019457 (2000-02-01), Silverbrook
patent: 2002/0149649 (2002-10-01), Moon et al.
patent: 2002/0175973 (2002-11-01), Moon et al.
patent: 2006/0181576 (2006-08-01), Endo et al.
patent: 2007/0091146 (2007-04-01), Endo et al.
patent: 2007/0268332 (2007-11-01), Silverbrook
Silverbrook Research Pty Ltd
Stephens Juanita D
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