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. 19, 2015
Filed:
Mar. 05, 2014
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
James Daniel Tremel, Santa Barbara, CA (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
A liquid replenishment system for a printing apparatus that includes a dispensing nozzle and a supply reservoir is improved by a replenishment system having a volume control network responsive to a signal representative of the volume of liquid within the reservoir for generating a volume control signal. The volume control signal is applied to a pump operable to inject replenishment liquid from a replenishment source into the reservoir. The replenishment liquid is injected at a pressure at least substantially equal to the pressure in the reservoir and at a flow rate selectable in accordance with the volume control signal such that the volume of liquid in the reservoir is maintained at a predetermined reference level. A temperature control network for adjusting the temperature of the replenishment liquid to a temperature that lies within a predetermined range of the temperature of the liquid in the reservoir may also be provided.