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    3.
    发明专利
    未知

    公开(公告)号：DE60331617D1

    公开(公告)日：2010-04-22

    申请号：DE60331617

    申请日：2003-04-23

    Applicant: CANON KK

    Inventor： TSUJINO TAKESHI ,  KANDA HITOSI ,  FUJITA RYOICHI ,  TSUJI YOSHINORI

    IPC: G03G9/08

    Abstract: A process for producing toner particles, in which toner particles are produced by polymerizing a polymerizable monomer composition containing at least a polymerizable monomer in an aqueous medium in a vessel, is provided. In this process, a resin composition containing a THF-insoluble resin component, which is a resin component generated in the process for producing toner particles, is kneaded. Then, the kneaded material and the polymerizable monomer are mixed together, and the resulting polymerizable monomer is polymerized to produce toner particles. For the resin composition, toner particles different from those having desired property, deposits on the vessel where the polymerization reaction occurred, or the like is used.

    4.
    发明专利
    未知

    公开(公告)号：DE69728951D1

    公开(公告)日：2004-06-09

    申请号：DE69728951

    申请日：1997-11-25

    Applicant: CANON KK

    Inventor： OKADO KENJI ,  UGAI TOSHIYUKI ,  FUJITA RYOICHI ,  YOSHIZAKI KAZUMI

    IPC: G03G13/02 ,  G03G15/02 ,  G03G9/08

    Abstract: An image forming method is disclosed in which a contact charging means is brought into contact with a latent image bearing member to electrostatically charge the latent image bearing member on which electrostatic latent images are formed and developed with a one component type or two component type developer to form toner images, using a developing assembly provided with a developing container and a developer carrying member. The one component developer is comprised of toner particles. The two component type developer is comprised of toner particles and a magnetic carrier. The toner particles of the one component type and two component type developers contains fine particles as an external additive. The latent image bearing member has a surface layer having a volume resistivity A of from 10 to 10 OMEGA .cm; the contact charging means comprises an assembly for electrostatically charging the latent image bearing member by applying a voltage to a charging member having a volume resistivity B of from 10 to 10 OMEGA .cm; the toner has, as an external additive, fine particles having a volume resistivity C of from 10 to 10 OMEGA .cm; the magnetic carrier has a volume resistivity D1 of from 10 to 10 OMEGA .cm; and the developer carrying member has a surface layer having a volume resistivity D2 of from 10 to 10 OMEGA .cm. The resistivities A, B, C, D1 and D2 stasisfy the following conditions: B

    5.
    发明专利
    未知

    公开(公告)号：DE69702798T2

    公开(公告)日：2001-03-08

    申请号：DE69702798

    申请日：1997-04-01

    Applicant: CANON KK

    Inventor： TAYA MASAAKI ,  OKADO KENJI ,  FUJITA RYOICHI ,  KANBAYASHI MAKOTO ,  TAKIGUCHI TSUYOSHI ,  IIDA WAKASHI ,  IDA TETSUYA

    IPC: G03G9/08 ,  G03G9/087

    Abstract: A toner for developing an electrostatic image is formed from toner particles containing at least a binder resin, a colorant and an organometallic compound. The binder resin in the toner particles has a tetrahydrofuran-insoluble (THF-insoluble) content of at most 5.0 wt. % based on the binder resin. The toner has a glass transition temperature of 50 - 80 C. The toner further has storage modulus characteristics including a storage modulus at 80 C (G'80) of 1x10 - 5x10 Ädyn/cm Ü, a storage modulus at 130 C (G'130) providing a ratio G'80/G'130 of 10 - 5x10 , and a storage modulus curve showing a minimum (G'min) in a temperature region of 110 - 190 C. The toner especially exhibits excellent low-temperature fixability, anti-high temperature offset characteristic, storage stability and color-miscibility.

    7.
    发明专利
    未知

    公开(公告)号：DE602004010951T2

    公开(公告)日：2008-12-24

    申请号：DE602004010951

    申请日：2004-04-29

    Applicant: CANON KK

    Inventor： BABA YOSHINOBU ,  FUJITA RYOICHI ,  KAYA TAKAAKI ,  TERAUCHI KAZUO

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

    Abstract: A magnetic carrier includes a magnetic material-dispersed resin core containing at least a magnetic material and a binder resin. The surface of the magnetic material-dispersed resin core is coated with a coating material containing at least a fluorine resin and 1 to 40 parts by weight of fine particles based on 100 parts by weight of the fluorine resin. The coating material is in an amount of 0.3 to 4.0 parts by weight based on 100 parts by weight of the magnetic material-dispersed resin core. The magnetic carrier has a contact angle of 95 to 125 DEG . A two-component developer is also provided which makes use of the magnetic carrier.

    8.
    发明专利
    未知

    公开(公告)号：DE69934758T2

    公开(公告)日：2007-10-31

    申请号：DE69934758

    申请日：1999-11-05

    Applicant: CANON KK

    Inventor： OKADO KENJI ,  FUJITA RYOICHI ,  MIKURIYA YUSHI ,  YACHI SHINYA ,  YOSHIZAKI KAZUMI

    IPC: G03G9/107 ,  G03G9/08 ,  G03G9/097 ,  G03G9/10 ,  G03G9/113

    Abstract: A two-component type developer has a negatively chargeable toner having toner particles and an external additive and a magnetic-fine-particle-dispersed resin carrier. The magnetic-fine-particle-dispersed resin carrier has composite particles containing at least inorganic compound particles and a binder resin. The inorganic compound particles have been surface-treated with a lipophilic-treating agent having at least one type of functional group (A) selected from the group consisting of an epoxy group, an amino group, a mercapto group, an organic acid group, an ester group, a ketone group, an alkyl halide group and an aldehyde group, or a mixture of the agent. The composite particles have been surface-coated with at least one type of coupling agent having at least one type of functional group (B) different from the functional group (A) the lipophilic-treating agent. The functional group (B) the coupling agent has being a functional group or groups selected from the group consisting of an epoxy group, an amino group and a mercapto group. The negatively chargeable toner has a weight-average particle diameter of from 3 mu m to 9 mu m.

    10.
    发明专利
    未知

    公开(公告)号：DE69613787D1

    公开(公告)日：2001-08-16

    申请号：DE69613787

    申请日：1996-10-11

    Applicant: CANON KK

    Inventor： TAKIGUCHI TSUYOSHI ,  OKADA KENJI ,  TAYA MASAAKI ,  FUJITA RYOICHI ,  KANBAYASHI MAKOTO ,  IIDA WAKASHI ,  IDA TETSUYA

    IPC: G03G9/097

    Abstract: A toner for developing an electrostatic image is formed from toner particles containing a binder resin, a colorant, and a charge-controlling agent. The charge-controlling agent comprises an aromatic oxycarboxylic acid, a metal compound of the aromatic oxycarboxylic acid, and an inorganic compound formed from an inorganic anion and an inorganic cation. The aromatic oxycarboxylic acid, the metal compound of the aromatic carboxylic acid and the inorganic anion are contained in proportions of A (wt. %), B (wt. %) and C (ppm), respectively, satisfying the following conditions: 1/99

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