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:
Nov. 30, 1999
Filed:
Dec. 04, 1996
Hideaki Haigo, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An ink cartridge for use in an ink jet printer includes a cartridge body and a lid. The cartridge body has an ink reservoir storing ink therein, arid is in a box-shape having one open surface. The lid is fixedly secured to the open surface of the cartridge body to hermetically seal the opern surface. The cartridge body is provided with a secondary housing formed with a hole open to atmosphere. In the secondary housing, inner walls are formed which define a communication channel of a labyrinthine structure for making a fluid communication between the ink reservoir and an outside atmosphere through the hole. The provision of such a communication channel smoothens the supply of ink to a print head but the labyrinthine structure prevents the ink evaporation.