Continuous ink jet color printing apparatus with rapid ink...

Details Continuous ink jet color printing apparatus with rapid ink... Continuous ink jet color printing apparatus with rapid ink...

2005-06-21

2005-06-21

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S073000, C347S043000, C347S098000

Reexamination Certificate

active

06908178

ABSTRACT:
A print head provides for multi-level printing with colorants of different densities without print head replication. A continuous ink jet printer includes a plurality of ink sources; a print head connected to multiple ink sources; and apparatus adapted to selectively transfer ink from each of the connected sources to the print head or to block such transfer. The nozzles selectively create a streams of ink droplets having a plurality of volumes. The apparatus also includes a droplet deflector having a gas source to interact with the stream of ink droplets, thereby separating ink droplets into printing and non-printing paths. The apparatus includes a print heads which can be switched between “light” and “dark” ink sources. This allows multi-level printing, thus achieving higher print quality at the same resolution without incurring the costs associated with additional dedicated print heads.

REFERENCES:
patent: 3709432 (1973-01-01), Robertson
patent: 4672432 (1987-06-01), Sakurada et al.
patent: 4811035 (1989-03-01), Huliba et al.
patent: 6079821 (2000-06-01), Chwalek et al.
patent: 6137501 (2000-10-01), Wen et al.
patent: 6554410 (2003-04-01), Jeanmaire et al.

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