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US006722755B2
(12) United States Patent ao) Patent No.: us 6,722,755 B2
Shigeno (45) Date of Patent: Apr. 20,2004
(54) INK-JET RECORDING APPARATUS
(75) Inventor: Kenji Shigeno, Kanagawa (JP)
(73) Assignee: Canon Kabushiki Kaisha, Tokyo (JP)
( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 10/059,017
(22) Filed: Jan. 30, 2002
(65) Prior Publication Data
US 2002/0101471 Al Aug. 1, 2002 (30) Foreign Application Priority Data
Jan. 31, 2001 (JP) 2001-024666
(51) Int. C I. B41J 2/165
(52) U.S. CI 347/24; 347/32; 347/30
(58) Field of Search 347/23-36
(56) References Cited
U.S. PATENT DOCUMENTS
5,475,404 A * 12/1995 Takahashi et al 347/23
5,712,668 A * 1/1998 Osborne et al 347/32
6,062,672 A * 5/2000 Ishize et al 347/30
6,252,615 Bl 6/2001 Yoshino 347/36
The objective of the present invention is to provide an ink-jet recording apparatus having a stable recovery means capable of absorbing discharged ink by a discharged ink holding means, preventing ink discharge openings from clogging and maintaining eject recovery performance. For that purpose the ink-jet recording apparatus is arranged as follows. A recording means having a plurality of nozzles and nozzle rows for ejecting ink, a reciprocatingly moving carriage on which the recording means is mounted, a recovery means for recovering or maintaining an ink eject status, and a discharged ink holding means for absorbing discharged ink from the recovery means and for keeping discharged ink from flowing out of the apparatus, where pigment ink and dye ink discharge openings are arranged closely so that both discharged inks are mixed so as to dissolve a stuck deposition of the pigment ink or to suppress the stuck deposition.
8 Claims, 17 Drawing Sheets
