公开(公告)号：DE60134593D1

公开(公告)日：2008-08-14

申请号：DE60134593

申请日：2001-02-16

Applicant: CANON KK

Inventor： IMANAKA YOSHIYUKI ,  TAKAGI SHINJI ,  SAITO ICHIRO ,  INUI TOSHIHARU ,  YANO KENTARO ,  IKEDA TETSUHITO ,  KATO MASAO ,  TAKAHASHI KATSUHIKO ,  MOCHIZUKI MUGA ,  SAITO KENICHI ,  SATO TOMONORI ,  KUBOKAWA TORU

IPC: B41J2/14 ,  B41J2/05

Abstract: The present inventions allow the detection of ink in the printing head by significantly simplified their configurations and on which various printing systems can be widely applied. There are a heater (101) for supplying an energy to ejecting ink, a driver (102) for driving heater (101), and a detection electrode (118) capable of detecting a voltage variation between the heater (101) and the driver (102) to be occurred depending on the driving of the heater (101). Furthermore, an insulating film (410) that covers the surface of the detection electrode (118) prevents a chemical or physical change from the detection electrode (118). Furthermore, a reference element group or a reference unit that produces a signal as a reference of the detection signal avoids the influence of noise. Furthermore, an energy-generating element (101) and another signal source (101) improve the accuracy of ink-detection. A drive pulse which is insufficient to ejecting ink may be supplied to the heater (101) to improve the accuracy of ink-detection.

公开(公告)号：JP2003205626A

公开(公告)日：2003-07-22

申请号：JP2002005660

申请日：2002-01-15

Applicant: CANON KK

Inventor： KUBOKAWA TORU

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To provide a method of recovering ejection for an inkjet recorder capable of improving a throughput of image recording by suppressing deterioration of a condition of an image recorded on a recording medium, of lowering the running cost and the power consumption, and of extending a life of a heater. SOLUTION: There is disclosed the inkjet recorder that performs the recording by ejecting ink to a recording medium from a recording means having a plurality of inkjet nozzles. In the case where there occurs on a nozzle defective ejection which can be recovered by performing one or more times of driving as in the recording, the number of times of the driving of the nozzle necessary for the recovery is determined based on a predicted number of times judged by a plurality of conditions, and then the driving is performed with the determined number of times on the recording medium during the recording operation. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002225306A

公开(公告)日：2002-08-14

申请号：JP2001030431

申请日：2001-02-07

Applicant: CANON KK

Inventor： KUBOKAWA TORU

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for refilling a liquid in which the liquid can be accurately refilled in a liquid tank used in a liquid jet apparatus or the like regardless of a remaining amount of the liquid and without requiring complicate control and constitution at the refilling time. SOLUTION: There are provided a liquid extraction means for extracting the liquid remaining in the liquid tank 1 from a liquid take-out port 4 through which the liquid is supplied to a liquid discharge head, means for reducing a pressure inside the liquid tank 1 after the liquid is extracted through the liquid take-out port 4, and filling means for filling a liquid in a supplementary liquid tank 11 from the liquid take-out port 4 to the liquid tank 1 with the utilization of a pressure difference between the supplementary liquid tank 11 and the liquid tank 1. The liquid remaining in the liquid tank 1 is once extracted through the liquid take-out port 4. The pressure of the liquid tank 1 after the liquid is extracted is reduced through the liquid take-out port 4. The liquid is refilled from the liquid take-out port 4 with the utilization of the pressure difference between the liquid tank 1 and the replenishment liquid tank 11.

公开(公告)号：JP2001232814A

公开(公告)日：2001-08-28

申请号：JP2000042078

申请日：2000-02-18

Applicant: CANON KK

Inventor： KUBOKAWA TORU ,  SAITO ICHIRO ,  IMANAKA YOSHIYUKI ,  MOCHIZUKI MUGA ,  TAKAGI SHINJI

IPC: B41J2/175 ,  B41J2/05

Abstract: PROBLEM TO BE SOLVED: To obtain an ink jet head in which the quantity of ink, especially presence of ink, can be detected accurately in units of nozzle through a simple arrangement. SOLUTION: Variation of potential in ink on a protective film, i.e., an upper insulating layer, of heaters 101 in a nozzle occurring upon driving the heaters through a driver 102 is detected at an electrode 118 where the potential variation is detected through ink. In such an arrangement, similar detection mechanisms (401, 402, 418) are provided, as references, at positions where ink exists without fail and a decision is made whether ink is present or not based on the difference (407) between a detection signal from the detection mechanism and a detection signal obtained through the electrode 118. According to the arrangement, effect of noise can be removed in the detection.

公开(公告)号：JP2001232796A

公开(公告)日：2001-08-28

申请号：JP2000042077

申请日：2000-02-18

Applicant: CANON KK

Inventor： MOCHIZUKI MUGA ,  IMANAKA YOSHIYUKI ,  SAITO ICHIRO ,  KUBOKAWA TORU ,  TAKAGI SHINJI

IPC: B41J2/01 ,  B41J2/05

Abstract: PROBLEM TO BE SOLVED: To provide a substrate for ink jet recording head, an ink jet recording head, an ink jet cartridge, and an ink jet recorder in which ink in the recording head can be detected through an extremely simple arrangement for various recording systems and ink can be detected stably over a long term. SOLUTION: There are provided a heater 101 supplying energy for ejecting ink, a driver 102 for driving the heater 101, an electrode 118 for detecting voltage variation occurring between the heater 101 and the driver 102 in response to driving of the hater 101, and an insulation film 410 covering the surface of the detection electrode 118.

公开(公告)号：JP2001187473A

公开(公告)日：2001-07-10

申请号：JP2000000438

申请日：2000-01-05

Applicant: CANON KK

Inventor： KUBOKAWA TORU

IPC: B41J2/01 ,  B41J13/00 ,  B65H29/24

Abstract: PROBLEM TO BE SOLVED: To provide an ink jet recorder in which a print sheet can be discharged while directing the recorded face downward, rearrangement in the order of page is not required, and the content can be kept secret for other person. SOLUTION: The ink jet recorder for recording an image on a recording medium through a recording means comprises a wind pressure supply means for applying a wind pressure to the lower surface of the recording medium from below wherein the wind pressure supply means is located on the downstream side of the recording means in the carrying direction of the recording medium.

公开(公告)号：JP2001232797A

公开(公告)日：2001-08-28

申请号：JP2000042079

申请日：2000-02-18

Applicant: CANON KK

Inventor： SAITO ICHIRO ,  KUBOKAWA TORU ,  IMANAKA YOSHIYUKI ,  MOCHIZUKI MUGA ,  TAKAGI SHINJI

IPC: B41J2/175 ,  B41J2/05 ,  B41J2/125

Abstract: PROBLEM TO BE SOLVED: To detect appropriate ink supply to the ink supply section of an ink jet recording head more accurately through a more inexpensive small arrangement. SOLUTION: There are provided an energy generating element 101, an element 102 for driving the energy generating element 101, an insulating protective film 405 formed to cover at least the energy generating element 101 and the drive element 102 and the wiring connecting them, a signal source 501 disposed at a position covered with the protective film 405 while being connected with the energy generating element 101, and an electrode 118 for detecting a potential variation occurring between the signal source 501 and the drive element 102 in response to driving of the energy generating element 101 through ink on a substrate for ink jet recording head.

公开(公告)号：JP2001232776A

公开(公告)日：2001-08-28

申请号：JP2000042076

申请日：2000-02-18

Applicant: CANON KK

Inventor： IMANAKA YOSHIYUKI ,  IKEDA TETSUTO ,  TAKAGI SHINJI ,  SAITO ICHIRO ,  KUBOKAWA TORU ,  YANO KENTARO ,  KATO MASAO ,  INUI TOSHIJI

IPC: B41J2/01 ,  B41J2/05 ,  B41J2/175

Abstract: PROBLEM TO BE SOLVED: To provide a base plate for an ink jet recording head, the ink jet recording head, an ink jet cartridge and an ink jet recorder capable of detecting an ink in a recording head with a simple constitution and being widely applied to various type recording systems. SOLUTION: The ink jet recording head comprises heaters 101 each for supplying an energy for discharging the ink, drivers 102 each for driving the heater 101, and a detecting electrode 118 capable of detecting a voltage change between the heater 101 for generating in response to the drive of the heater 101 and the driver 102 via the ink on the plate 100.