公开(公告)号：CA2183824A1

公开(公告)日：1997-02-24

申请号：CA2183824

申请日：1996-08-21

Applicant: CANON KK

Inventor： OGUCHI TAKAHIRO ,  SUZUKI HIDETOSHI ,  SAKAI KUNIHIRO ,  SAKURAGI TAKAMASA ,  TODOKORO YASUYUKI

IPC: G09G3/20 ,  G09G3/22 ,  H01J1/304 ,  H01J1/316 ,  H01J29/46 ,  H01J31/10 ,  H04N5/63 ,  H04N5/70 ,  H04N9/26 ,  H01J7/00

Abstract: In order to prevent voltage drops across the wiring resistances in a multi-electron source having a plurality of electron emitters wired in the form of a matrix of a plurality of data wiring layer electrodes and a plurality of scanning wiring layer electrodes, a constant current signal is output to each data wiring layer electrode. At this time, each non-selected data wiring layer electrode tends to be set at a high impedance and vary in potential, resulting in an abnormal turn-on operation or an electron orbit shift. A driving circuit for solving this problem is provided. A switch for switching a constant current output unit for outputting a constant current regardless of the impedance of a signal output destination, and a constant voltage output unit for outputting a constant voltage regardless of the impedance of a signal output destination is connected to each data wiring layer electrode. For example, a constant-current circuit (17) as a current output unit always outputs the same current (I1 to In) to a switch (30). A pulse width signal (PW1 to PWn) from a pulse-width modulation circuit (7) serves to switch the mode of outputting a current (I1 to In) to a data wiring layer electrode (Dy1 to Dyn,) and the mode of fixing a data wiring layer electrode to voltage GND.

公开(公告)号：DE69024571D1

公开(公告)日：1996-02-15

申请号：DE69024571

申请日：1990-09-06

Applicant: CANON KK

Inventor： YANAGISAWA YOSHIHIRO ,  SAKAI KUNIHIRO ,  TAKAMATSU OSAMU ,  EGUCHI KEN ,  MATSUDA HIROSHI ,  KAWADE HISAAKI ,  TAKEDA TOSHIHIKO

IPC: G11B9/00 ,  G11B11/08 ,  G11B21/00

Abstract: Recording, reproduction or erasing of information is performed on a recording medium having a recording layer provided on an electrode substrate. The electrode substrate has a regular periodic structure within a plane and the structure is detected through the recording layer by use of a probe electrode to determine a desired position on the recording medium.

公开(公告)号：DE3854173D1

公开(公告)日：1995-08-24

申请号：DE3854173

申请日：1988-08-24

Applicant: CANON KK

Inventor： YANAGISAWA YOSHIHIRO ,  MORIKAWA YUKO ,  MATSUDA HIROSHI ,  KAWADA HARUKI ,  SAKAI KUNIHIRO ,  KAWADE HISAAKI ,  EGUCHI KEN ,  KAWAKAMI EIGO ,  KAWASE TOSHIMITSU ,  YOSHII MINORU ,  SAITOH KENJI ,  YAMANO AKIHIKO ,  NOSE HIROYASU

IPC: G01B7/00 ,  G01D5/244 ,  G01D5/245 ,  G01Q10/00 ,  G01Q20/04 ,  G01Q60/00 ,  G01Q60/10 ,  G01Q70/06 ,  G11B9/00 ,  G01N27/00 ,  H03M1/00

Abstract: An encoder includes an electrically conductive reference scale having surface steps formed at predetermined positions; an electrically conductive probe having a tip disposed opposed to the reference scale; wherein the reference scale and the probe are relatively movable in a direction different from the opposing direction of the tip of the probe and the reference scale; a portion for applying an electric voltage to between the reference scale and the probe; a portion for detecting a change in a tunnel current between the reference scale and the probe, to between which the electric voltage is applied by the voltage applying portion at the time of the relative movement between the scale and the probe, the detecting portion detecting the change in the tunnel current when the probe passes a position opposed to a surface step of the reference scale; and portion for detecting the amount of the relative movement between the scale and probe, on the basis of the detection by the change detecting portion.

公开(公告)号：DE69011899D1

公开(公告)日：1994-10-06

申请号：DE69011899

申请日：1990-01-17

Applicant: CANON KK

Inventor： EGUCHI KEN ,  MIYAZAKI TOSHIHIKO ,  SAKAI KUNIHIRO

IPC: G01J1/00 ,  G01J1/02 ,  G01J1/04 ,  G01J1/42

Abstract: A photosensing device comprising at least one probe electrode, a light-absorbing medium in opposition to the probe electrode, and a means for adjusting the distance between the probe electrode and the light-absorbing medium is provided.

公开(公告)号：DE3789373D1

公开(公告)日：1994-04-21

申请号：DE3789373

申请日：1987-12-23

Applicant: CANON KK

Inventor： EGUCHI KEN ,  KAWADA HARUKI ,  SAKAI KUNIHIRO ,  MATSUDA HIROSHI ,  MORIKAWA YUKO ,  NAKAGIRI TAKASHI ,  HAMAMOTO TAKASHI ,  KURIBAYASHI MASAKI ,  KAWADE HISAAKI ,  YANAGISAWA YOSHIHIRO

IPC: G03G5/00 ,  G11B7/244 ,  G11B7/248 ,  G11B7/249 ,  G11B9/00 ,  G11B9/04 ,  G11B9/08 ,  G11B11/00 ,  G11B11/08 ,  G11C11/21

公开(公告)号：CA2073919A1

公开(公告)日：1993-01-18

申请号：CA2073919

申请日：1992-07-15

Applicant: CANON KK

Inventor： TAKIMOTO KIYOSHI ,  MIYAZAKI TOSHIHIKO ,  SAKAI KUNIHIRO ,  KURODA RYO

IPC: G01Q10/00 ,  G01Q30/04 ,  G11B9/00 ,  G11B11/00 ,  G11B17/32

Abstract: The apparatus comprising: a plurality of probe electrodes (31) for recording and reproducing information; support means (33) for unitedly supporting said plurality of probe electrodes (31) in parallel facing the medium (34); adjusting means (35,37) for adjusting a spacing between said medium (34) and said support means (33); displacing means (32) for, in order to independently adjust a spacing between said medium (34) and each tip (3101) of the probe electrodes (31), independently displacing the respective probe electrodes (31) in a direction of the spacing; and control means (39,310) for controlling said displacing means (32) such that all spacings between said medium (34) and said respective probe electrode tips (3101) are made equivalent; in which apparatus or method said control means (39,310) are adapted to control said adjusting means (35,37) such that, upon the control of said displacing means (32), an average of displacement amounts of said plural probe electrodes (31) is substantially zero or a sum of squares of displacement of said plural probe electrodes (31) is minimized.

公开(公告)号：CA2070948A1

公开(公告)日：1992-12-12

申请号：CA2070948

申请日：1992-06-10

Applicant: CANON KK

Inventor： YAMANO AKIHIKO ,  HATANAKA KATSUNORI ,  SAKAI KUNIHIRO ,  OGUCHI TAKAHIRO ,  SHIDO SHUNICHI

IPC: G01Q70/00 ,  G01N37/00 ,  G01Q60/10 ,  G01Q80/00 ,  G11B9/00 ,  G11B9/14

Abstract: In a reproducing operation, scanning information is detected while scanning an information string with a probe such that a density of the scan lines is higher than a density of the recorded information, and a logical-sum signal of the plurality of scanning information is used as a reproduced signal. It is thereby possible to prevent deterioration during information processing of the S/N ratio and the like produced due to a positional error of a recording-medium control mechanism caused by various factors.

公开(公告)号：CA2066477A1

公开(公告)日：1992-10-25

申请号：CA2066477

申请日：1992-04-21

Applicant: CANON KK

Inventor： HATANAKA KATSUNORI ,  SAKAI KUNIHIRO ,  KAWADA HARUKI ,  KURODA RYO

IPC: G01Q30/04 ,  G11B9/00 ,  G11B9/14 ,  G11B19/02

Abstract: In order to effect the reading-out of a signal from a recording medium at a high speed and without the collision of a probe electrode, the control of the spacing between the probe electrode and the signal recording layer of the recording medium is effected by sampling a tunnel current detected by the probe electrode at the timing of a reproduction clock, and reproduction is effected with this sampled value as a reference. Also, in order to effect information recording with good reproducibility and at high density, the control variable of a servo control circuit for controlling the spacing between the probe electrode and the recording layer is changed over during the periods before and after a writing pulse is applied to the probe electrode. Also, in order to effect re-recording reliably, the prior recorded state at the re-writing position is detected, and from the result of this detection, an optimal servo control variable, the waveform of a pulse voltage applied, etc. are set.

公开(公告)号：CA2059990A1

公开(公告)日：1992-07-30

申请号：CA2059990

申请日：1992-01-24

Applicant: CANON KK

Inventor： MIYAZAKI TOSHIHIKO ,  OGUCHI TAKAHIRO ,  SAKAI KUNIHIRO ,  SHIDO SHUN-ICHI

IPC: G01Q10/04 ,  G01N27/00 ,  G01Q10/06 ,  G01Q20/04 ,  G01Q60/16 ,  G01Q70/04 ,  G11B9/00

Abstract: This specification discloses an apparatus for and a method of moving a probe for causing a physical phenomenon to occur between it and a predetermined object and the object relative to each other to make the probe approach the object. At least one of the probe and the object is driven in a predetermined direction to displace one of the probe and the object in the predetermined direction relative to the other. A physical phenomenon occurring between the probe and the object is detected. At least one of the probe and the object is driven so as to bring the probe and the object close to each other. The driving for the approach of the probe to the object is controlled on the basis of the result of the detection of the physical phenomenon during the driving in the predetermined direction. The specification also discloses an information detection and/or input apparatus using such apparatus and method.

公开(公告)号：DE69927434T2

公开(公告)日：2006-06-22

申请号：DE69927434

申请日：1999-04-30

Applicant: CANON KK

Inventor： FUSHIMI MASAHIRO ,  SAKAI KUNIHIRO

IPC: G02F1/1339 ,  H01J9/24 ,  G09F9/00 ,  G09F9/30 ,  H01J1/30 ,  H01J5/03 ,  H01J9/18 ,  H01J29/02 ,  H01J29/86 ,  H01J29/87 ,  H01J31/12 ,  H04N5/68

Abstract: A method of manufacturing an image forming apparatus having an envelope made of members inclusive of a first substrate and a second substrate disposed at a space being set therebetween, image forming means and spacers disposed in the envelope, the spacers maintaining the space, the method comprising the steps of forming a spacer having a desired shape by cutting a spacer base member, and abutting the spacer upon the first and second substrates at non-cut surfaces of the spacer.