公开(公告)号：JP2002184563A

公开(公告)日：2002-06-28

申请号：JP2000384336

申请日：2000-12-18

Applicant: CANON KK

Inventor： MANO HIROSHI ,  SEKIGUCHI HAJIME ,  SATO TAKASHI

IPC: G03G15/20 ,  H05B6/06 ,  H05B6/14

Abstract: PROBLEM TO BE SOLVED: To reduce temperature stress in an electromagnetic induction heating material and aim at longer life, with a heating device 100 of electromagnetic induction heating system. SOLUTION: The heating device heating an object with heat generated by an electromagnetic induction heating material consisting of magnetic field generating means 17, 18, and a material 10 which generates heat by electromagnetic induction heating of the magnetic field generating means, and a pressure member 30 forming a nip part N of a heated member P by mutual pressure contacting with the electromagnetic induction heating material is provided with a first temperature detecting means 26 detecting the temperature at the nip part of the electromagnetic induction heating material and a second temperature detecting means 41 for measuring the temperature of the electromagnetic induction heating material generating heat by combination of magnetic field the field generating means generates. Exciting current impressed on an exciting coil of the field generating means is controlled based on the detected temperature of the first temperature detecting means, and at the same time, power to be supplied to the exciting coil is controlled based on the difference in the detected temperature by the first temperature detecting means and that of the second temperature detecting means.

公开(公告)号：JP2002083676A

公开(公告)日：2002-03-22

申请号：JP2000273337

申请日：2000-09-08

Applicant: CANON KK

Inventor： SATO TAKASHI

IPC: G03G15/20 ,  H05B6/14 ,  H05B6/40

Abstract: PROBLEM TO BE SOLVED: To prevent reduction in the service life of a film or a pressure roller, due to the generation of excessively-rising temperature (temperature rise of a non-film-sending section) at the non-film-sending section, when a small size heated material is sent through it, in a heating apparatus which uses a metal fixing roller of a shape of a film in which heat capacity is reduced. SOLUTION: The heating apparatus has a magnetic-flux adjustment means, that makes the density distribution of the direction, which crosses in the conveyance direction of the heated material of the acting magnetic flux to an induction heat-generating body change from a magnetic-flux generating means, and a heated material size detection means that detects the size of the heated material. The position of the magnetic-flux adjustment means is displaced by a drive means, based on the detection result of the above heated material size detection means, and the generation of heat itself, except the required portions is suppressed.

公开(公告)号：JP2002027743A

公开(公告)日：2002-01-25

申请号：JP2000203885

申请日：2000-07-05

Applicant: CANON KK

Inventor： SATO TAKASHI

IPC: H02M3/28

Abstract: PROBLEM TO BE SOLVED: To reduce consumption power similarly to the conventional case, while circuit constitution is simplified. SOLUTION: A voltage detecting circuit 9 is constituted of resistors R1, R2 which divide a voltage between an output voltage Vo and the ground, and the connection point 13 of the resistor R1 and the resistor R2 is connected with a constant voltage circuit 11. In a switching circuit 10, the collector terminal of a transistor Q1 is connected with the connection point 13, the base terminal is connected with a control signal terminal via a resistor 4, and the emitter terminal is grounded via resistor R3. When a product is driven, the transistor Q1 turns on, a resistor R2 and the resistor R3 are connected in parallel, and an output voltage Vo is detected. In the case of product standby, the transistor Q1 turns off, and the output voltage Vo is detected on the basis of a voltage division ratio of the resistor R1 and the resistor R2.

公开(公告)号：JP2001351776A

公开(公告)日：2001-12-21

申请号：JP2000173833

申请日：2000-06-09

Applicant: CANON KK

Inventor： SATO TAKASHI

IPC: G03G15/20 ,  H05B6/14 ,  H05B6/36 ,  H05B6/42

Abstract: PROBLEM TO BE SOLVED: To provide an excitation coil, a heating device and an image-forming device, capable of suppressing a temperature rise of the excitation coil itself, without having to remove the heat around a heating member or the like by flowing a heat medium in the hollow part of a conductor of the excitation coil, improving energy efficiency, and using a low-grade insulating kind of bundle wire as the conductor of the excitation coil. SOLUTION: This heating device has a magnetic field generating means including the excitation coil 3, and the heating member 2 for heating a material to be heated P through electromagnetic induction heat generation caused by a generated magnetic field by the magnetic field generating means. In the device, the excitation coil 3 is formed by winding the hollow conductor, and the heat transfer medium is made to flow in the hollow part of the hollow conductor.

公开(公告)号：JPH1189230A

公开(公告)日：1999-03-30

申请号：JP26490997

申请日：1997-09-11

Applicant: CANON KK

Inventor： SATO TAKASHI

IPC: G05F1/56 ,  H02M3/28

Abstract: PROBLEM TO BE SOLVED: To provide an output ON/OFF circuit of a multi-output swtching power source, which is used as both a control circuit and a discharge circuit by using a simple constitution. SOLUTION: When an N-type MOS-FET Q2 is turned to the state of OFF from the state of ON, load side capactance charges of a second output terminal 5 is biased to the gate of the N-type MOS-FET Q2, in the case that the load side capacitance charges of the second output terminal 5 are left. In order to impart the function for drawing out the load side capacitance charges of the second output terminal 5, to a first transistor Q3 for controlling the bias of the gate of the N-type MOS-FET Q2, a diode D4 for biasing the load side capacitance charges of the second terminal 5 to the gate of the N-type MOS- FET Q2 is installed.

公开(公告)号：JPH09325326A

公开(公告)日：1997-12-16

申请号：JP14191596

申请日：1996-06-04

Applicant: CANON KK

Inventor： KUREMATSU KATSUMI ,  ONITSUKA YOSHIHIRO ,  SATO TAKASHI

IPC: G02F1/13 ,  G02F1/1333 ,  G02F1/1345

Abstract: PROBLEM TO BE SOLVED: To prevent the static pressure of a gelling substance from affecting the liquid crystal device. SOLUTION: A front glass plate 3a and a rear glass plate 3b are arranged on both the display surface side and back surface side of a couple of electrode substrates 2a and 2b and transparent gelling substances 4a and 4b are charged between both the top surfaces of electrode substrates 2a and 2b, and the front glass plate 3a and rear glass plate 3b. Consequently, the gelling substances 4a and 4b balance in static pressure between the display surface side and back surface side of the electrode substrates 2a and 2b to prevent the electrode substrates 2a and 2b from bending.

公开(公告)号：JPH09189905A

公开(公告)日：1997-07-22

申请号：JP180596

申请日：1996-01-09

Applicant: CANON KK

Inventor： SATO TAKASHI ,  KUREMATSU KATSUMI

IPC: G02F1/13 ,  G02F1/1335

Abstract: PROBLEM TO BE SOLVED: To improve the display visibility of a liquid crystal cell. SOLUTION: The surface of a polarizing plate 3a and both surfaces of a protective plate 5 are diffusion-processed so as to form respective diffusion surfaces 3c, 5a and 5b, and the cloudiness of the diffusion surface 5b on the liquid crystal cell 2 side of the protective plate 5 and the cloudiness of the diffusion surface 3c of the polarizing plate 3a are set equal to or below the cloudiness of the diffusion surface 5a on the observation side of the protective plate 5, then, the whole display is prevented from becoming whitish due to scattering of reflection light from a lighting fixture, etc., and also, the outline of the reflected image of the lighting fixture, etc., is prevented from being projected, so that the display visibility is improved.

公开(公告)号：JPH01152888A

公开(公告)日：1989-06-15

申请号：JP31096487

申请日：1987-12-10

Applicant: CANON KK

Inventor： SATO TAKASHI

IPC: H04N9/68 ,  H04N9/07

Abstract: PURPOSE:To attain free expression of hue and saturation with simple constitution by obtaining a color difference signal from a signal outputted from an image pickup element and using a control switch so as to eliminate the obtained color difference signal and controlling forcibly the level of the color difference signal before balanced modulation based on the elimination means. CONSTITUTION:A signal processing circuit 103 forms color difference signals R-Y, B-Y and a luminance signal. The color difference signals R-Y, B-Y are subject to carrier balance correction by correction circuits 104, 104' respectively. In this case, when the control switch 109 is turned on, the signal system is cut off by transistors 106, 106'. Then a predetermined control voltage is supplied to the signal system by a control circuit 108 to obtain a single color effect. Moreover, the voltage of the control circuit 108 is changed optionally to obtain free hue and saturation effect and the result is outputted as a special video signal.

公开(公告)号：JP2015090401A

公开(公告)日：2015-05-11

申请号：JP2013229714

申请日：2013-11-05

Applicant: CANON KK

Inventor： MATSUKAWA KENHISA ,  KAINO TOSHIYA ,  MOCHIZUKI KEISUKE ,  NOGUCHI BUNRO ,  SATO TAKASHI ,  SHIBATA MASAHIRO ,  MITSUI YOSHIHIRO ,  YAMAUCHI HISASHI

IPC: G03G15/08

Abstract: 【課題】現像剤の残量の検知精度の向上を図ることができる技術を提供する。【解決手段】現像剤が収容された収容部と、回転することにより収容部に収容された現像剤を撹拌する、可撓性を有するシート状の攪拌部材11と、攪拌部材11に貼り付けられ、変形により電圧を出力するフィルム状の圧電素子12と、回転する攪拌部材11が収容部における現像剤の堆積領域の外にあるときに撹拌部材11に接触して撹拌部材11を撓ませる撓み形成部9と、を備えることを特徴とする。【選択図】図1

公开(公告)号：JP2003225997A

公开(公告)日：2003-08-12

申请号：JP2002024105

申请日：2002-01-31

Applicant: CANON KK

Inventor： SATO TAKASHI

IPC: B41J2/01 ,  B41J2/05 ,  B41J29/393

Abstract: PROBLEM TO BE SOLVED: To provide a recording apparatus capable of feeding stable voltage to a recording head so as to follow the momentary fluctuations due to the ON/OFF of the recording elements of the recording head and capable of suppressing a voltage drop, and a voltage control method. SOLUTION: The recording data transmitted from external machinery is inputted in order to control drive voltage for driving the recording head equipped with a plurality of recording elements mounted on the recording apparatus and the number of the recording elements to be driven at the same time of the recording head is counted on the basis of the inputted recording data. A degree of the load corresponding to one cycle of the next recording operation applied to the recording head is evaluated on the basis of the count result and an evaluation signal displaying the evaluation result is inputted to a voltage control unit for feeding controlled voltage for driving a plurality of the recording elements of the recording head and compensation voltage is applied on the basis of the evaluation signal in order to compensate the voltage drop generated by the load at the time of driving of the recording head. COPYRIGHT: (C)2003,JPO