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:
Apr. 05, 1983
Filed:
Jan. 21, 1981
Joachim Heinzl, Munich, DE;
Erich Kattner, Neubiberg, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A mosaic ink recorder having a number of outlet nozzles in a nozzle plate for discharging ink droplets on a recording media has a screen with apertures therein which are disposed in groups in registry with the outlet nozzles, the apertures in the screen having a diameter which is substantially less than the diameter of the outlet nozzles. The apertures increase the pressure necessary to break the meniscus of the ink remaining in a channel after discharge of a droplet by a ratio approximately equal to the ratio of the diameter of the aperture to the diameter of the nozzle. The recording head is thus rendered substantially less sensitive to vibration and other disturbances which may otherwise break the meniscus and permit ink to flow in a channel at undesired times. The screen may be a separately attachable element or may be integrated with the body of the recording head.