The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1999
Filed:
Jun. 06, 1996
Ulrich Hetzer, Berlin, DE;
Jurgen Quass, Berlin, DE;
Franoctyp-Postalia AG & Co., Birkenwerder, DE;
Abstract
A microclimate enriched by solvent vapors is produced in the antechamber during print operation and also predominates during the print pauses, the microclimate having a slightly higher pressure than the outer atmosphere. In this way all nozzles are equally protected against drying out. During print pauses of longer duration, the antechamber is closed and, if needed, is rinsed with solvent. The antechamber is formed by the ink print head being set back in relation to the front wall of the housing. In the front wall opposite the nozzles, openings are made whose width is larger than the diameter of a nozzle opening. The antechamber has a trough-shaped area for the inlet and outlet of solvent by capillary action, and a non-capillary area for the solvent vapors. A seal bonnet is provided for sealing during longer print pauses and cleaning processes.