Liquid accommodating container, ink jet cartridge having said liquid accommodating container and ink jet apparatus having said ink jet cartridge

(19)

(11)

EP 0 802 056 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.11.1997 Bulletin 1997/46

(43)	Date of publication A2:
	22.10.1997 Bulletin 1997/43

(21)	Application number: 97109851.2

(22)	Date of filing: 28.06.1994

(51)	International Patent Classification (IPC)⁶: B41J 2/175

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

(30)

Priority:

29.06.1993 JP 159494/93
30.06.1993 JP 161790/93
30.06.1993 JP 161135/93
02.08.1993 JP 191379/93
03.09.1993 JP 219787/93
08.06.1994 JP 125965/94

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	94109973.1 / 0631874

(71)	Applicant: CANON KABUSHIKI KAISHA
	Tokyo (JP)

(72)	Inventors:
	Hiroki, Tajima Ohta-ku, Tokyo 146 (JP) Toshio, Kashino Ohta-ku, Tokyo 146 (JP) Masahiko, Higuma Ohta-ku, Tokyo 146 (JP) Takeshi, Okazaki Ohta-ku, Tokyo 146 (JP)

(74)	Representative: Pellmann, Hans-Bernd, Dipl.-Ing. et al
	Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4 80336 München 80336 München (DE)


	Remarks:
	This application was filed on 17 - 06 - 1997 as a divisional application to the application mentioned under INID code 62.

(54)	Liquid accommodating container, ink jet cartridge having said liquid accommodating container and ink jet apparatus having said ink jet cartridge

(57) A liquid accommodating container (1000) is connected to an ink jet head (2000) and accommodates a liquid supplied to said ink jet head (2000). The container comprises: a partition (1100a) for dividing said liquid accommodating container (1000) into having a first chamber (1100) and a second chamber (1200), wherein said first chamber (1100) is accommodated with a negative pressure generating member (1102) and has a supply portion (1101) for supplying the liquid to said head (2000) and an atmosphere communicating section (1150, 1300) communicated with an atmospheric air, said second chamber (1200) is communicated with said first chamber (1100) through said atmosphere communicating section (1150, 1300) and substantially sealed except said atmosphere communicating section (1150, 1300), said second chamber (1200) accommodating the liquid to be supplied to said first chamber (1100), and a rib (1103a, 1103b, 1103c) contacting said negative pressure generating member (1102) to define a space being provided on an upper surface of said first chamber (1100) in a state that said liquid accommodating container (1000) is used.

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