公开(公告)号：DE69124948T2

公开(公告)日：1997-06-26

申请号：DE69124948

申请日：1991-12-09

Applicant: CANON KK ,  DAI ICHI KOGYO SEIYAKU CO LTD

Inventor： KOYAMA TAKASHI ,  FUJIMURA NAOTO ,  HASHIMOTO YUICHI ,  SHIRAIWA TETSUO ,  MORI SHIGEO

IPC: G03G5/05 ,  G03G5/14 ,  H04N1/29

Abstract: An electrophotographic photosensitive member is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a mixture including a polyol compound [A] and a polyisocyanate compound[B] satisfying at least one of the following conditions (i) and (ii): (i) the polyol compound [A] is a high-molecular weight polyol compound, and (ii) the polyisocyanate compound is a polyoxyalkylene segment-containing polyisocyanate compound. The photosensitive member shows stable electrophotographic performances over wide environmental conditions from low temperature - low humidity to high temperature - high humidity due to the intermediate layer.

公开(公告)号：DE69021783T2

公开(公告)日：1996-02-22

申请号：DE69021783

申请日：1990-06-07

Applicant: CANON KK

Inventor： HASHIMOTO YUICHI ,  KOYAMA TAKASHI

IPC: G03G5/14

公开(公告)号：DE69009527T2

公开(公告)日：1994-10-13

申请号：DE69009527

申请日：1990-03-01

Applicant: CANON KK

Inventor： OKUDA MASAMI ,  TANAKA HISAMI ,  KISHI JUNICHI ,  OHMORI HIROYUKI ,  KOYAMA TAKASHI ,  HISAMURA MASAFUMI

IPC: G03G15/02

Abstract: A charging member for electrophotography comprising a surface layer, wherein the surface layer comprises a resin and an alkali metal salt contained therein.

公开(公告)号：FR2636747B1

公开(公告)日：1994-06-03

申请号：FR8912416

申请日：1989-09-21

Applicant: CANON KK

Inventor： KOYAMA TAKASHI ,  HASHIMOTO YUICHI

IPC: G03G5/14

Abstract: A photosensitive member for electrophotography comprising an electroconductive substrate, and an intermediate layer and a photosensitive layer disposed in this order on the substrate; the intermediate layer comprising a resin component and a salt; the intermediate layer containing the salt in an amount of 1-800 ppm based on the weight of the resin component.

公开(公告)号：DE69219177T2

公开(公告)日：1997-10-02

申请号：DE69219177

申请日：1992-02-04

Applicant: CANON KK ,  DAI ICHI KOGYO SEIYAKU CO LTD

Inventor： KOYAMA TAKASHI ,  FUJIMURA NAOTO ,  HASHIMOTO YUICHI ,  SHIRAIWA TETSUO ,  MORI SHIGEO C O DAI-ICHI KOGYO

IPC: C08G18/48 ,  C08G18/50 ,  C08G65/22 ,  C08G65/26 ,  G03G5/14

Abstract: A photosensitive member suitable for use in an electrophotographic apparatus is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a polyol compound comprising at least one of a polyol compound [I] represented by Formula (1) shown below and a phosphated polyol compound with a polyisocyanate compound: wherein A denotes B denotes -R -O-, A and B may be connected at random or in blocks with each other, Z denotes an active hydrogen compound residue; R is an alkylene group having 1 - 9 carbon atoms; R is an alkylene group having 1 - 10 carbon atoms; R is an alkyl group, alkenyl group, aryl group or aralkyl group having 1 - 20 carbon atoms; R is an alkylene group having 2 - 10 carbon atoms; k is a number of 1 - 12; m is a number of 1 - 250; n is a number of 0 - 100; and p is a number of 0 - 5.

公开(公告)号：DE69030637D1

公开(公告)日：1997-06-12

申请号：DE69030637

申请日：1990-10-16

Applicant: CANON KK

Inventor： SAKAI KIYOSHI ,  TANAKA HISAMI ,  FUJIMURA NAOTO ,  SAKAKIBARA TEIGO ,  KOYAMA TAKASHI

IPC: G03G5/14

Abstract: An image holding member comprises an electroconductive substrate, a resin layer, and an image holding layer. The resin layer is placed between the electroconductive substrate and the image holding layer. The resin layer comprises metalcoated fine resin particles, and a binder resin.

公开(公告)号：DE69219177D1

公开(公告)日：1997-05-28

申请号：DE69219177

申请日：1992-02-04

Applicant: CANON KK ,  DAI ICHI KOGYO SEIYAKU CO LTD

Inventor： KOYAMA TAKASHI ,  FUJIMURA NAOTO ,  HASHIMOTO YUICHI ,  SHIRAIWA TETSUO ,  MORI SHIGEO C O DAI-ICHI KOGYO

IPC: C08G18/48 ,  C08G18/50 ,  C08G65/22 ,  C08G65/26 ,  G03G5/14

Abstract: A photosensitive member suitable for use in an electrophotographic apparatus is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a polyol compound comprising at least one of a polyol compound [I] represented by Formula (1) shown below and a phosphated polyol compound with a polyisocyanate compound: wherein A denotes B denotes -R -O-, A and B may be connected at random or in blocks with each other, Z denotes an active hydrogen compound residue; R is an alkylene group having 1 - 9 carbon atoms; R is an alkylene group having 1 - 10 carbon atoms; R is an alkyl group, alkenyl group, aryl group or aralkyl group having 1 - 20 carbon atoms; R is an alkylene group having 2 - 10 carbon atoms; k is a number of 1 - 12; m is a number of 1 - 250; n is a number of 0 - 100; and p is a number of 0 - 5.

公开(公告)号：DE69026129T2

公开(公告)日：1996-08-29

申请号：DE69026129

申请日：1990-04-20

Applicant: CANON KK

Inventor： KOYAMA TAKASHI ,  ANAYAMA HIDEKI ,  HASHIMOTO YUICHI ,  HIRAYAMA NORIKO ,  SAKAI KIYOSHI ,  SAKAKIBARA TEIGO ,  FUJIMURA NAOTO ,  AMAMIYA SHOJI

IPC: G03G5/14

Abstract: An electrophotographic photosensitive member 1 has a photosensitive layer provided on an electroconductive support with interposition of an intermediate layer, the intermediate layer containing a polyether-polyurethane and an electroconductive substance. An electrophotographic apparatus, comprises an electrophotographic photosensitive member having a photosensitive layer provided on an electroconductive support with interposition of an intermediate layer, the intermediate layer containing a polyether-polyurethane and an electroconductive substance. A facsimile apparatus comprises an electrophotographic apparatus and a receiving means for receiving image information from a remote terminal, the electrophotographic apparatus comprising an electrophotographic photosensitive member having a photosensitive layer provided on an electroconductive support with interposition of an intermediate layer, the intermediate layer containing a polyether-polyurethane and an electroconductive substance.

公开(公告)号：DE69021783D1

公开(公告)日：1995-09-28

申请号：DE69021783

申请日：1990-06-07

Applicant: CANON KK

Inventor： HASHIMOTO YUICHI ,  KOYAMA TAKASHI

IPC: G03G5/14

公开(公告)号：JP2000352740A

公开(公告)日：2000-12-19

申请号：JP16262799

申请日：1999-06-09

Applicant: CANON KK

Inventor： KOYAMA TAKASHI

IPC: H04N5/225 ,  G03B13/06

Abstract: PROBLEM TO BE SOLVED: To put an optical view finder(OVF) and an electronic view finder(EVF) together so as to be compact. SOLUTION: When this device is used as an EVF, a liquid crystal display 4 is illuminated by a backlight 5, so that an image obtained by enlarging the image of the liquid crystal element 4 by a target lens optical system 3 is observed with an eyepiece 2, and luminous flux from an objective lens is intercepted by a mirror 6. When the mirror 6 is switched to a state shown by a broken line, the luminous flux from the liquid crystal 4 is intercepted, so that an OVF state is obtained. By bending the target lens optical system to the eyepiece direction, the periphery of an ocular where space is comparatively secured is made the space for the liquid crystal element 4 and the backlight 5 in an inverted Galilean finder where the diameter of the objective lens is larger than that of the eyepiece like this. Therefore, the finder becomes the compact finder excellent in space efficiency. In this case, the target lens optical system is bent in the reverse direction to that in an ordinary mark type finder.