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. 29, 2001
Filed:
Sep. 15, 1995
Takao Kobayashi, Suwa, JP;
Satoshi Shinada, Suwa, JP;
Kiyofumi Usui, Suwa, JP;
Shoichi Hiraide, Suwa, JP;
Kazuo Koshino, Suwa, JP;
Hisashi Miyazawa, Suwa, JP;
Seiji Mochizuki, Suwa, JP;
Yoshinori Miyazawa, Suwa, JP;
Takashi Suzuki, Suwa, JP;
Eiko Yanagida, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink cartridge including: an ink chamber for retaining liquid ink; a foam chamber maintained in fluid communication with the ink chamber through a communication hole. An ink supply port for supplying ink from a porous body accommodated in the foam chamber to a recording head is provided. The portion of the foam body confronting the ink supply port is compressed by the ink supply port. The ratio between the amount of ink initially charged in the ink chamber and that of ink absorbed in the porous body is in the range from 1:1 to 1:3. When a cartridge uses more than one color of ink for printing in color, a plurality of foam and ink cartridges are used. The cartridge is filled under reduced pressure while the interior of the cartridge is further evacuated before filling with ink.