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1. 发明专利

JP2007001209A METHOD FOR FEEDING INK AND RECORDER 审中-公开
公开(公告)号：JP2007001209A
公开(公告)日：2007-01-11
申请号：JP2005185744
申请日：2005-06-24
申请人： CANON KK
发明人： TANIGUCHI TAKU , MIZUTANI MICHIYA
IPC分类号： B41J2/175
摘要： PROBLEM TO BE SOLVED: To provide an ink feeding method which can improve a reliability by lightening the damage that a vapor-liquid separation member suffers when repeating the ink-feeding using the vapor-liquid separation member, and a recorder. SOLUTION: A plurality of amounts of suction per unit time of an air in a subtank 3 are established by sucking the air in the subtank 3 through the vapor-liquid separating member 33 in a feed system for feeding the ink into the subtank 3 from an ink feeding port 11. COPYRIGHT: (C)2007,JPO&INPIT

2. 发明专利

JP2002086733A METHOD OF INK JET RECORDING AND INK JET RECORDER 审中-公开
公开(公告)号：JP2002086733A
公开(公告)日：2002-03-26
申请号：JP2001209408
申请日：2001-07-10
申请人： CANON KK
发明人： MURAKAMI SHUICHI , MIZUTANI MICHIYA , KAWATOKO NORIHIRO , TAJIKA HIROSHI
IPC分类号： B41J2/01 , B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To improve a driving frequency characteristic, a durability and a reliability and to suppress recording variation. SOLUTION: Two hundreds fifty five (one hundred twenty eight in one side) electrothermal conversion elements 14 in segments 0-255 are arranged at both sides of an ink supply hole 15 in the longitudinal direction thereof. The electrothermal conversion elements 14 are arranged in a line in a staggered fashion in 600 DPI. The electrothermal conversion elements 14 in the segments 0-255 are divided into blocks in which the electrothermal conversion elements 14 are heated at roughly the same time. The electrothermal conversion elements 14 in the segments 0-31 are divided into total 16 blocks in such a manner that the electrothermal conversion element 14 in the segment 0 and the electrothermal conversion elements 14 in the segment 1 are in the block 0 and the electrothermal conversion elements 14 in the segment 2 and the electrothermal conversion elements 14 in the segment 3 are in the block 1.

3. 发明专利

JP2002029056A LIQUID DISCHARGE HEAD, HEAD CARTRIDGE USING THE SAME, AND IMAGE-FORMING APPARATUS 失效
公开(公告)号：JP2002029056A
公开(公告)日：2002-01-29
申请号：JP2000214988
申请日：2000-07-14
申请人： CANON KK
发明人： MIZUTANI MICHIYA
IPC分类号： B41J2/01 , B41J2/05
摘要： PROBLEM TO BE SOLVED: To solve the problem that white streaks are generated when solid prints are formed because ink drops discharged from discharge ports present at both ends in an arrangement direction of the ports in an ink jet printer are unevenly brought to the center in the arrangement direction. SOLUTION: The liquid discharge head has a plurality of discharge ports 16 arranged along a transfer direction for a printing medium and a plurality of discharge energy-generating parts 13 arranged opposite to the discharge ports for letting a liquid discharged from the discharge ports 16. The liquid discharge head which scans and moves along the printing medium in a direction intersecting the transfer direction for the printing medium makes a deviation quantity between an axis of the discharge port 16 and a center position of the corresponding discharge energy-generating part 13 different between the central part and end parts along the arrangement direction of the discharge ports 16.

4. 发明专利

JP2000168089A METHOD AND APPARATUS FOR INK-JET PRINTING 失效
公开(公告)号：JP2000168089A
公开(公告)日：2000-06-20
申请号：JP34866998
申请日：1998-12-08
申请人： CANON KK
发明人： TACHIHARA MASAYOSHI , MIZUTANI MICHIYA
IPC分类号： B41J2/05 , B41M5/00
摘要： PROBLEM TO BE SOLVED: To enable preferable ejection without generating ejection failure of ink droplets such as droplet split by time division of an ejection energy generating means into a plurality of groups in a predetermined driving cycle, and providing a driving means for providing a predetermined relationship in the driving interval among the groups. SOLUTION: A CPU 10 controls each part of the apparatus according to a processing procedure stored in a ROM 10A and a work area of a RAM 10B. The CPU 10 supplies driving data of a heat generating member and a driving signal to a head driver 30A so that a printing head 30 ejects ink droplets. The CPU 10 controls a carriage by a motor 20 via a motor driver 20A as well as a paper feeding motor by a motor driver 50A for the time division drive of an energy generating means in a plurality of groups. Among a plurality of driving intervals of the groups, the driving interval in the groups to be driven later is provided larger than the driving interval in the groups to be driven earlier so as to prevent generation of ejection with droplet split.

5. 发明专利

JP2001347663A INK JET RECORDING HEAD AND INK JET RECORDER 失效
公开(公告)号：JP2001347663A
公开(公告)日：2001-12-18
申请号：JP2001105864
申请日：2001-04-04
申请人： CANON KK
发明人： MIZUTANI MICHIYA
IPC分类号： B41J2/05
摘要： PROBLEM TO BE SOLVED: To provide an ink jet recording head in which refill frequency can be maximized while sustaining the linearity of image even in case of time sharing drive and throughput of a printer can be enhanced. SOLUTION: In an ink jet recording head having a plurality of ink ejection openings 3 and heaters 2 disposed oppositely thereto in order to generate thermal energy being used for ejecting ink wherein they are sectioned into a plurality of blocks being driven sequentially in the same drive period while sharing the time, the plurality of heaters 2 are arranged substantially linearly and the ink ejection openings 3 are arranged in such a projection relationship as corresponding to the time sharing driving order while being shifted from the heaters 2. Alternatively, the plurality of ink ejection openings 3 are arranged substantially linearly and the heaters 2 are arranged in such a projection relationship as corresponding to the time sharing driving order while being shifted from the ink ejection openings 3.

6. 发明专利

JPH115307A INK JET RECORDING HEAD 失效
公开(公告)号：JPH115307A
公开(公告)日：1999-01-12
申请号：JP17760497
申请日：1997-06-18
申请人： CANON KK
发明人： MURAKAMI SHUICHI , INOUE TAKASHI , KANEKO MINEO , TACHIHARA MASAYOSHI , MIZUTANI MICHIYA , AKAMA YUICHIRO
IPC分类号： B41J2/05 , B41J2/14 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To suppress increase of running cost, or the like, by arranging evaporation retarding grooves in the vicinity of the jet ports of an ink jet recording head having an orifice plate provided with a plurality of jet ports thereby prolonging the time interval of unstable jetting. SOLUTION: Evaporation of ink from a nearby jet port 1 can be suppressed by storing ink in an evaporation retarding groove 10 communicating a groove 8. The evaporation retarding groove 10 is about 20 μm wide and the distance from each jet port is about 20 μm. When moisture and alcohol are evaporated from the ink collected in the evaporation retarding groove 10, humidity of the atmosphere around the jet port 1 increases to retard evaporation of ink from the jet port. Consequently, the density is prevented from increasing at the starting position of writing and a trouble where the ink is not jetted or jetted to a shifted position can be eliminated by preventing unstable jetting. Furthermore, the evaporation retarding groove 10 can collect an ink mist during print operation and a mist being splashed back from a print medium.

7. 发明专利

JPH10181017A RECORDING APPARATUS AND CONTROL METHOD THEREFOR 失效
公开(公告)号：JPH10181017A
公开(公告)日：1998-07-07
申请号：JP35121396
申请日：1996-12-27
申请人： CANON KK
发明人： MIZUTANI MICHIYA , NAKAJIMA KAZUHIRO
IPC分类号： B41J2/05
摘要： PROBLEM TO BE SOLVED: To realize a stable recording operation regardless of the number of recording elements, by making it possible to control a driving power in accordance with a count of recording elements driven at the same time. SOLUTION: A block including a plurality of recording elements (nozzles) which can be driven at the same time is selected by a block signal 1 and a decoder 2. A counter 8 counts black pixels of input image data, thereby obtaining a count of nozzles to be driven to discharge among the plurality of nozzles in the block. A pulse width control circuit determines a width of driving pulses to be impressed to heat-generating elements 3 of the plurality of nozzles in the block on the basis of the number of nozzles to be driven which is obtained by the counter 8. The image data are input to a shift register 6 as well. Recording elements to be driven among the plurality of recording elements in the block are determined and driven with the pulse width determined by the pulse width control circuit, whereby the ink is discharged from each nozzle.

8. 发明专利

JPH10119274A INK JET PRINTER AND DRIVING METHOD FOR INK JET HEAD 失效
公开(公告)号：JPH10119274A
公开(公告)日：1998-05-12
申请号：JP27454596
申请日：1996-10-17
申请人： CANON KK
发明人： MIZUTANI MICHIYA
IPC分类号： B41J2/01 , B41J2/05 , B41J2/205
摘要： PROBLEM TO BE SOLVED: To perform high speed printing of an image having a high density without occurrence of delaying of refilling of ink in an ink jet printer. SOLUTION: In heaters SEG1-SEG4 for ink ejection of an ink jet head, the heaters SEG1 and SEG3 are disposed near an ink supplying hole rather than the other heaters. In a high speed printing mode wherein the speed is two times of that in a normal mode, the above heaters SEG1 and SEG3 are driven by a driving cycle which is two times of that of the other. A delay time corresponding to the differences of the disposing positions of the heaters is set. As a result, it is possible to reduce thinned dots due to the high speed printing in terms of the printed result, thereby preventing lowering of the overall density.

9. 发明专利

JP2003170595A METHOD FOR EJECTING LIQUID, LIQUID EJECTING HEAD AND IMAGING APPARATUS 审中-公开
公开(公告)号：JP2003170595A
公开(公告)日：2003-06-17
申请号：JP2002265966
申请日：2002-09-11
申请人： CANON KK
发明人： MURAKAMI SHUICHI , KAWATOKO NORIHIRO , TAJIKA HIROSHI , MIZUTANI MICHIYA
IPC分类号： B41J2/05
摘要： PROBLEM TO BE SOLVED: To solve such a problem that ink drops being ejected from ejection openings located on the opposite end sides in the arranging direction of an ink jet printer are biased to the central side in the arranging direction and white streaks are generated at the time of forming a solid print. SOLUTION: In the liquid ejection head 19 comprising a plurality of ejection openings 25 arranged along the first direction, and a plurality of electrothermal converters 30 for ejecting liquid from the ejection openings 25 and moving relatively to a print medium, the kinetic energy of liquid being ejected from the ejection openings 25 located at the opposite end parts in the arranging direction and constituting an end part ejection opening group is set higher than the kinetic energy of liquid being ejected from the ejection openings 25 located in the central part in the arranging direction and constituting a central ejection opening group. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2003127439A INKJET RECORDING HEAD, INKJET RECORDER AND METHOD OF INKJET RECORDING 审中-公开
公开(公告)号：JP2003127439A
公开(公告)日：2003-05-08
申请号：JP2002176342
申请日：2002-06-17
申请人： CANON KK
发明人： MURAKAMI SHUICHI , MIZUTANI MICHIYA , INOUE TAKASHI
IPC分类号： B41J2/01 , B41J2/05 , B41J2/14 , B41J2/15 , B41J2/205 , B41J2/21
摘要： PROBLEM TO BE SOLVED: To provide an inkjet recording head, an inkjet recorder, and a method of inkjet recording capable of recording a high gradation and high quality image by dots having different sizes. SOLUTION: A center of at least one of second ejection nozzles is positioned on a virtual line passing through a center of a first ejection nozzle and being extended in a main scanning direction of the recording head. The volume of the ejected ink drop of the second ejection nozzle is smaller than that of the first ejection nozzle and the number of the second ejection nozzles is greater than that of the first ejection nozzles.

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