公开(公告)号：JP2002322394A

公开(公告)日：2002-11-08

申请号：JP2001126190

申请日：2001-04-24

Applicant: CANON KK

Inventor： TAKUHARA HIROYUKI ,  TAKAHASHI KATSUHIKO ,  OGASAWARA MIKIFUMI ,  ASAKI NORIYASU ,  ENDO MAKIKO ,  KURABAYASHI YUTAKA ,  EGUCHI GAKUO

IPC: B41J2/01 ,  B41M5/00 ,  C09C1/56 ,  C09C3/08 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38

Abstract: PROBLEM TO BE SOLVED: To obtain an ink composition for use in ink jet that can produce a printing image having good fixing and anti-bleeding properties on a printing medium and prevent an outbreak of ink jet failure depending on foaming action of the ink composition, wherein ink retention and negative pressure control in a sponge absorbent in an ink tank become easy. SOLUTION: This ink composition for use in ink jet comprises a cationic radical containing colorant, water and a water-soluble organic solvent, wherein it is characterized in that furthermore a cationic surface-active agent and an anti-foaming agent are contained.

公开(公告)号：JP2002241651A

公开(公告)日：2002-08-28

申请号：JP2001036699

申请日：2001-02-14

Applicant: CANON KK

Inventor： ASAKI NORIYASU ,  KURABAYASHI YUTAKA

IPC: B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  C09D11/322 ,  C09D11/328

Abstract: PROBLEM TO BE SOLVED: To provide ink for ink-jet recording that has high jetting stability, dispersion stability and can attain excellent resistance of the printed matter to water, even when being printed on plain paper. SOLUTION: When the maximum absorbance at 380-700 nm of the ink which at least comprises oil-soluble dyes or pigments, resins, organic solvents and water is defined as Amax, the dilution rate, as D; the amount of the resins (in wt.% based on the total weight of the ink), as D, the value of Amax×D/R is set 200-2,500.

公开(公告)号：JP2002200774A

公开(公告)日：2002-07-16

申请号：JP2000403330

申请日：2000-12-28

Applicant: CANON KK

Inventor： OKAMOTO HIDEAKI ,  NEZU YUSHI ,  KURATA TETSUJI ,  ARA YOJI ,  FUKAZAWA HIDEO ,  INOUE HIROYUKI ,  UETSUKI MASAYA ,  HAYASHI KOKI ,  ASAKI NORIYASU ,  HIRANO HIROFUMI

IPC: B41J2/175 ,  B41J2/165 ,  B41J2/18 ,  B41J2/185

Abstract: PROBLEM TO BE SOLVED: To solve the problem that it is difficult to surely replenish ink to an ink tank by a simple constitution, obstructing an aim of making a printer compact, light-weight and improved in reliability. SOLUTION: The storage ink tank 20 is provided with a suction system including a suction port 53 for introducing a negative pressure to the inside, an ink intake port 20b for taking ink to the inside by the negative pressure introduced from the suction port 53, a gas transmission member 48 set to the suction system for passing only a gas, and an atmosphere communication port 104. The atmosphere communication port 104 is shut when the ink is introduced to the inside from the ink intake port 20b.

公开(公告)号：JP2002192743A

公开(公告)日：2002-07-10

申请号：JP2000399275

申请日：2000-12-27

Applicant: CANON KK

Inventor： OKAMOTO HIDEAKI ,  NEZU YUSHI ,  KURATA TETSUJI ,  ARA YOJI ,  FUKAZAWA HIDEO ,  INOUE HIROYUKI ,  UETSUKI MASAYA ,  ASAKI NORIYASU ,  HAYASHI KOKI ,  HIRANO HIROFUMI

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To obtain an ink jet recorder in which the structure is simplified significantly and the total cost, size and weight are reduced while enhancing the reliability by providing a suction pump with a function for sucking ink for the purpose of recovery operation of a recording head, a function for sucking air in a sub-ink tank for the purpose of ink supply operation, and a function for removing air in the supply channel, thereby effecting ink supply surely through a simple structure. SOLUTION: An ink jet recorder comprises a main ink tank disposed on the body side, and a sub-ink tank carried on a carriage. The main ink tank is connected with the sub-ink tank through a supply channel, and ink in the main ink tank is supplied to the sub-ink tank through a supply means. A gas- liquid separating means is provided in the supply channel in the vicinity of ink intake part of the sub-ink tank and coupled with a first negative pressure generating means.

公开(公告)号：JP2002160356A

公开(公告)日：2002-06-04

申请号：JP2001267878

申请日：2001-09-04

Applicant: CANON KK

Inventor： ASAKI NORIYASU ,  KIGAMI HIROYUKI ,  OZAKI TERUO ,  TAJIMA HIRONORI

IPC: B41J2/01 ,  B41J2/05 ,  B41J2/14 ,  B41J2/16 ,  B41J2/175 ,  C09D11/00 ,  C09D11/322 ,  C09D11/324

Abstract: PROBLEM TO BE SOLVED: To provide a method for inspection and preservation which makes it possible to maintain a recording head using a reactive ink for recording without deteriorating its predetermined function. SOLUTION: As to a recording head using reactive ink, the recording is preserved as a recording head for preservation after performing an ejection inspection by supplying ink for inspection not containing reactive component into a liquid flow path of the recording head and replacing the ink for inspection in the liquid flow path of the recording head by a colorant and the ink for preservation not containing reactive component after the ejection inspection.

公开(公告)号：JP2001301192A

公开(公告)日：2001-10-30

申请号：JP2000123296

申请日：2000-04-24

Applicant: CANON KK

Inventor： KURATA TETSUJI ,  HIRANO HIROFUMI ,  ARA YOJI ,  FUKAZAWA HIDEO ,  UETSUKI MASAYA ,  ASAKI NORIYASU ,  HAYASHI KOKI ,  INOUE HIROYUKI ,  OKAMOTO HIDEAKI ,  NEZU YUSHI

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To obtain an ink jet recorder in which ink supply to an ink tank and pressure control in the ink tank when supplied can be carried out surely through a simple arrangement while reducing the size and weight and enhancing the reliability. SOLUTION: The ink jet recorder comprises an ink tank having a ink inlet, and an ink supply means for supplying ink from a supplement tank into the ink tank by a negative pressure introduced into the ink tank through the suction opening thereof wherein a negative pressure control means for leaving the negative pressure in the ink tank is provided in the ink supply passage from the ink tank to the interior thereof so that the pressure in the ink tank does not return back to the atmospheric pressure at the time of taking in the ink.

公开(公告)号：JP2001301190A

公开(公告)日：2001-10-30

申请号：JP2000118564

申请日：2000-04-19

Applicant: CANON KK

Inventor： OKAMOTO HIDEAKI ,  NEZU YUSHI ,  HIRANO HIROFUMI ,  KURATA TETSUJI ,  ARA YOJI ,  FUKAZAWA HIDEO ,  INOUE HIROYUKI ,  UETSUKI MASAYA ,  ASAKI NORIYASU ,  HAYASHI KOKI

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To obtain an ink jet recorder in which ink can be supplied surely to an ink tank through a simple arrangement while reducing the size, weight and cost and enhancing reliability. SOLUTION: The ink jet recorder comprises means for introducing a negative pressure into an ink tank, means for supplying ink into the ink tank using the negative pressure in the ink tank, a gas/liquid separation means not passing ink but passing gas provided in a negative pressure introduction passage between the ink tank and the negative pressure introducing means, and means for separating an intermediate part of the negative pressure introduction passage between the gas/liquid separation means and the negative pressure introducing means.

公开(公告)号：JP2000334982A

公开(公告)日：2000-12-05

申请号：JP15306099

申请日：1999-05-31

Applicant: CANON KK

Inventor： HIRANO HIROFUMI ,  KURATA TETSUJI ,  ARA YOJI ,  FUKAZAWA HIDEO ,  INOUE HIROYUKI ,  UETSUKI MASAYA ,  HAYASHI KOKI ,  ASAKI NORIYASU ,  NEZU YUSHI ,  OKAMOTO HIDEAKI

IPC: B41J2/175 ,  B41J2/18 ,  B41J2/185

Abstract: PROBLEM TO BE SOLVED: To supply an ink tank with ink through a simple arrangement by stopping suction supply of ink automatically utilizing the function of a gas permeation member. SOLUTION: A negative pressure is brought about in a storage ink tank 20 when it is evacuated by means of a suction pump. Consequently, ink in a supplementary ink tank sucked into the interior 41 of the tank 20 permeates an ink absorber 41a comprising a mass of small interconnecting cells and the liquid level 41b of ink ascends as permeation progresses. Since ascending rate of the liquid level 41b of ink depends on the suction force of the suction pump, an appropriate rate is set depending on the rotational amount of a cam gear. When the liquid level 41b of ink reaches a gas permeation member 48, ink supply is stopped automatically because the gas permeation member 48 does not pass liquid, e.g. ink. The gas permeation member 48 is a thin sheet made of a porous resin material, e.g. tetrafluoroethylene resin.

公开(公告)号：JP2000334979A

公开(公告)日：2000-12-05

申请号：JP15306499

申请日：1999-05-31

Applicant: CANON KK

Inventor： OKAMOTO HIDEAKI ,  INOUE HIROYUKI ,  ARA YOJI ,  HIRANO HIROFUMI ,  KURATA TETSUJI ,  UETSUKI MASAYA ,  FUKAZAWA HIDEO ,  NEZU YUSHI ,  ASAKI NORIYASU ,  HAYASHI KOKI

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To obtain a small, lightweight and highly reliable recorder in which ink can be supplied surely through a simple arrangement by providing a liquid/ gas separating means not permeating ink but permeating gas in a negative pressure introduction passage between an ink tank and a negative pressure introducing means, and a breaking means at a part in the way of the passage. SOLUTION: A sub-tank 501 mountable removably on a carriage moving along guide shafts 503A, 503B is provided, at a section for containing each color of ink, with an ink intake opening, a suction opening, openings 501A-C communicating with the atmosphere, and an ink supply opening. A seal member 532 on the forward end side of an arm member 531 supported by a supporting member 533 while being urged by a spring 534 is connected to a suction pump 513 through a suction pipe 512 to form a sealing member 532B for closing openings 532A, 501B, 501C which can be interconnected to a suction opening 501B. Further, a member 505 not permeating ink but permeating gas is provided at the opening 532A and when a recording head 502 is at a home position, cap parts 524, 525 ascend to cover a nozzle part 502A and sealing member 523, 532 close openings 501A, 501B.

公开(公告)号：JP2000334977A

公开(公告)日：2000-12-05

申请号：JP15306299

申请日：1999-05-31

Applicant: CANON KK

Inventor： FUKAZAWA HIDEO ,  OKAMOTO HIDEAKI ,  INOUE HIROYUKI ,  ARA YOJI ,  HIRANO HIROFUMI ,  KURATA TETSUJI ,  UETSUKI MASAYA ,  NEZU YUSHI ,  ASAKI NORIYASU ,  HAYASHI KOKI

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To provide an ink tank and a recorder wherein a bag type tank body can be readily formed and an ink passage can be surely connected to the tank body when an ink tank is loaded. SOLUTION: An ink tank is so constituted that a bag type tank body 22a capable of reserving ink is formed from a thin film sheet and a part of the sheet is folded to form a folded section. A seal 22a1 is adhered to the folded section and a connection section capable of connecting the inner section of the tank body 22a with the external section thereof through a hollow pipe capable of passing through the part of the seal 22a1.