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:
May. 11, 1982
Filed:
Jul. 23, 1980
George W Denlinger, Springboro, OH (US);
Robert A Wiley, Richardson, TX (US);
James H Yu, Dallas, TX (US);
The Mead Corporation, Dayton, OH (US);
Abstract
An ink jet fluid system includes a print head, defining a fluid reservoir, and further including at least one orifice communicating with the reservoir for generating a jet drop stream from the fluid flowing through the orifice. Inlet and outlet valves are connected to inlet and outlet openings of the print head, respectively, and a siphon line extending generally downward is connected to the outlet valve. A float valve, connected between the siphon line and the fluid supply system for the print head, vents the lower end of the siphon line to atmosphere to produce a sub-atmospheric fluid pressure within the print head after shutdown of the printer. The float valve includes a float which prevents air from entering the fluid supply through the valve. The float valve further is arranged so as to prevent ink within the valve from flowing out the vent opening.