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:
Sep. 10, 1996
Filed:
Jun. 29, 1992
Toshio Miyazawa, Shizuoka, JP;
Kabushiki Kaisha TEC, Shizuoka, JP;
Abstract
In the present invention, draft holes are provided a the corners of an ink storage tank. The holes have diameters which enable them to hold ink inside the ink storage tank by the surface tension of the ink, and even when the position of the ink storage tank is changed to a different position, some of the draft holes can be positioned higher than the ink level. This makes it possible to communicate the inside of the ink storage tank with air and keeps the inside pressure at atmospheric pressure, whereby ink leakage through the draft hole is prevented. At the draft holes positioned lower than the ink level, the ink is held by the surface tension of the ink, thus preventing ink leakage through the draft holes.