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    4.
    发明专利
    未知

    公开(公告)号：DE69706353D1

    公开(公告)日：2001-10-04

    申请号：DE69706353

    申请日：1997-04-07

    Applicant: CANON KK

    Inventor： BABA YOSHINOBU ,  IKEDA TAKESHI ,  SATO YUKO ,  ITABASHI HITOSHI ,  TOKUNAGA YUZO

    IPC: G03G9/08 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113

    Abstract: A magnetic coated carrier suitable for constituting a two-component type developer for use in electrophotography is composed of magnetic coated carrier particles comprising magnetic coated carrier particles comprising magnetic carrier core particles each comprising a binder resin and metal oxide particles, and a coating layer surface-coating each carrier core particle. The metal oxide particles have been subjected to a surface lipophilicity-imparting treatment. The magnetic carrier core particles have a resistivity of at least 1x10 ohm.cm, and the magnetic coated carrier has a resistivity of at least 1x10 ohm.cm. The magnetic coated carrier has a particle size distribution such that (i) it has a number-average particle size Dn of 5 - 100 mu m, (ii) it satisfies a relationship of Dn/ sigma >/= 3.5, wherein sigma denotes a standard deviation of number-basis particle size distribution of the carrier, and (iii) it contains at least 25 % by number of particles having particle sizes of at most Dn x 2/3.

    5.
    发明专利
    未知

    公开(公告)号：DE69426164D1

    公开(公告)日：2000-11-30

    申请号：DE69426164

    申请日：1994-04-26

    Applicant: CANON KK

    Inventor： MAYAMA SHINYA ,  IKEDA TAKESHI ,  BABA YOSHINOBU ,  OGATA NAOYA

    IPC: G03G9/08 ,  G03G9/097 ,  G03G9/087

    Abstract: A toner for developing electrostatic images is comprised of toner particles having a number average particle diameter of from 0.5 mu m to 5.0 mu m, in which toner particles with a particle diameter of 6.0 mu m or larger is included in a proportion of not more than 5% by number. The toner particles are obtained by a process having the steps of dispersing a monomer composition containing at least a colorant, a charge control agent, or a mixture of these, and a polymerizable monomer, in free space formed in a polymeric medium, and polymerizing the monomer composition dispersed in said free space.

    6.
    发明专利
    未知

    公开(公告)号：DE69416992D1

    公开(公告)日：1999-04-15

    申请号：DE69416992

    申请日：1994-12-23

    Applicant: CANON KK

    Inventor： MAYAMA SHINYA ,  SATO YUKO ,  AOTO HIROSHI ,  ITABASHI HITOSHI ,  IKEDA TAKESHI ,  BABA YOSHINOBU ,  HAYASHI YASUKO ,  TOKUNAGA YUZO

    IPC: G03G9/08 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113 ,  G03G15/08 ,  G03G15/09

    Abstract: A carrier for use in electrophotography has carrier particles. The carrier particles each comprise a carrier core particle and a resin for coating the carrier core particle and having a resistivity of 10 OMEGA .cm or above under conditions of a temperature of 23 DEG C and a humidity of 50%RH. The carrier particles have an average particle diameter of not larger than 100 mu m and a resistivity of 10 OMEGA .cm or above. The carrier particles comprise not less than 80% by number of resin-coated carrier particles whose carrier core particles are each coated with a resin in a coverage of not less than 90%.

    MAGNETIC COATED CARRIER, TWO-COMPONENT TYPE DEVELOPER AND DEVELOPING METHOD
    7.
    发明专利
    MAGNETIC COATED CARRIER, TWO-COMPONENT TYPE DEVELOPER AND DEVELOPING METHOD 未知

    公开(公告)号：HK1002876A1

    公开(公告)日：1998-09-25

    申请号：HK98102013

    申请日：1998-03-11

    Applicant: CANON KK

    Inventor： BABA YOSHINOBU ,  SATO YUKO ,  TOKUNAGA YUZO ,  IKEDA TAKESHI ,  ITABASHI HITOSHI

    IPC: G03G9/08 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113 ,  G03G

    Abstract: A magnetic coated carrier suitable for constituting a two-component type developer for use in electrophotography is composed of magnetic coated carrier particles comprising magnetic coated carrier particles comprising magnetic carrier core particles each comprising a binder resin and metal oxide particles, and a coating layer surface-coating each carrier core particle. The metal oxide particles have been subjected to a surface lipophilicity-imparting treatment. The magnetic carrier core particles have a resistivity of at least 1x10 ohm.cm, and the magnetic coated carrier has a resistivity of at least 1x10 ohm.cm. The magnetic coated carrier has a particle size distribution such that (i) it has a number-average particle size Dn of 5 - 100 mu m, (ii) it satisfies a relationship of Dn/ sigma >/= 3.5, wherein sigma denotes a standard deviation of number-basis particle size distribution of the carrier, and (iii) it contains at least 25 % by number of particles having particle sizes of at most Dn x 2/3.

    ELECTROPHOTOGRAPHIC TONER
    8.
    发明专利
    ELECTROPHOTOGRAPHIC TONER 未知

    公开(公告)号：GB2159970B

    公开(公告)日：1988-03-23

    申请号：GB8510433

    申请日：1985-04-24

    Applicant: CANON KK

    Inventor： SUEMATSU KOSHI ,  IKEDA TAKESHI ,  YAMAMOTO ATSUKO ,  GOTO KOJI ,  IMAI EIICHI

    IPC: G03G9/08 ,  G03G15/08 ,  G03G9/087 ,  G03G9/097 ,  G03G13/08

    Abstract: A substantially nonmagnetic toner comprising a colorant and a binder comprising a homopolymer or copolymer having a ratio (Mw/Mn) of a weight-average molecular weight (Mw) of a number average molecular weight (Mn) of less than 5.0 is formed in a thin layer on a toner carrying member. The layer of toner is carried to a developing zone at which an image bearing member is disposed to face the toner carrying member with a clearance larger than the toner layer thickness and an electrostatic image on the image bearing member is developed with the thin layer of toner. The toner binder resin preferably comprises a copolymer of a vinyl monomer and an amonoacrylic monomer.

    FAX APPARATUS
    9.
    发明专利
    FAX APPARATUS 未知

    公开(公告)号：GB2169467A

    公开(公告)日：1986-07-09

    申请号：GB8529921

    申请日：1985-12-04

    Applicant: CANON KK

    Inventor： IKEDA TAKESHI ,  IJUIN KAZUYA

    IPC: H04N1/00 ,  H04N1/12 ,  H04N1/193 ,  H04N1/04 ,  H04N1/06 ,  H04N1/08

    Abstract: An original reading apparatus of this invention has a platen roller for conveying an original, a solid state image sensor, a small imaging element array for forming the image of the original on the solid state image sensor, and a plate for holding down the original against the platen roller.

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