Automatic startup for a solvent ink printing system

Details Automatic startup for a solvent ink printing system Automatic startup for a solvent ink printing system

2005-02-01

2005-02-01

Hsieh, Shih-Wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06848767

ABSTRACT:
An automatic start-up for a continuous ink jet printer provides a dyeless flush fluid to the printhead to remove any particles or ink residue from the printhead and to wet the orifice plate before jets form. The pressure of the flush fluid is then raised to cause the flush fluid to begin jetting from the drop generator. Once jets are established, ink is supplied to the drop generator at the pressure of the jetting flush fluid. The flow of flush fluid is stopped. Since the printhead is being supplied with ink, ink replaces the flush fluid as the fluid being jetted from the drop generator. An ink heater is then turned on, increasing evaporation of solvent from the ink jetted from the drop generator. The solvent vapors condense on the relatively cool charge plate and catcher face. The condensate forming on these surfaces provides one final rinse of these surfaces to remove conductive ink from the charge leads and catcher face. After a period of condensate cleaning, the ink heater is turned off, and a heater attached to the charge plate catcher assembly is turned on to dry the charge plate and catcher. Charge voltage may then be turned on to deflect the ink drops into catch. At this point, the printhead is ready for printing.

REFERENCES:
patent: 5126752 (1992-06-01), Weinberg
patent: 5757396 (1998-05-01), Bruner
patent: 6273103 (2001-08-01), Enz et al.
patent: 6435637 (2002-08-01), Lyman

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