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. 14, 2013
Filed:
Sep. 23, 2010
Chen-hsing Cheng, Hsinchu, TW;
Tsung-yu Hung, Hsinchu, TW;
Chen-Hsing Cheng, Hsinchu, TW;
Tsung-Yu Hung, Hsinchu, TW;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
The present invention relates to an ink-supplying system. The ink-supplying system includes an ink tank for receiving ink therein, a vacuum pump configured for providing a pressure below atmospheric pressure in the ink tank, a first regulating unit, at least one second regulating unit, and a third regulating unit disposed between the vacuum pump and the ink tank, and in communication with each other. The first regulating unit and the third regulating unit each includes a pressure regulating valve and a buffer tank connected therewith, and the at least one second regulating unit comprises a closed-loop pressure regulating valve and a buffer tank connected with the closed-loop pressure regulating valve.