(19)
(11) EP 0 655 658 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.07.1996 Bulletin 1996/27

(43) Date of publication A2:
31.05.1995 Bulletin 1995/22

(21) Application number: 94105509.7

(22) Date of filing: 08.04.1994
(51) International Patent Classification (IPC)6: G03G 9/113, G03G 15/08
(84) Designated Contracting States:
DE FR GB

(30) Priority: 01.11.1993 JP 293798/93

(71) Applicant: HODOGAYA CHEMICAL CO., LTD.
Tokyo (JP)

(72) Inventors:
  • Mukudai, Osamu, c/o Hodogaya Chem. Co., Ltd.
    Tsukuba-shi Ibaraki (JP)
  • Matsuura Yuuji, c/o Hodogaya Chem. Co., Ltd.
    Tsukuba-shi, Ibiraki (JP)
  • Niimura, Isao, c/o Hodogaya Chem. Co., Ltd.
    Tsukuba-shi, Ibaraki (JP)
  • Watanabe, Kayoko, c/o hodogaya Chem. Co., Ltd.
    Tsukuba-shi, Ibaraki (JP)
  • Iwasa, Keiko, c/o Hodogaya Chem. Co., Ltd.
    Tsukuba-shi, Ibaraki (JP)

(74) Representative: Hansen, Bernd, Dr. Dipl.-Chem. et al
Hoffmann, Eitle & Partner, Patentanwälte, Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Friction charge-providing member for positively-chargeable toner


(57) A friction charge-providing member for positively-chargeable toner comprising a parent material and a charge-controlling agent on the surface is disclosed. The charge-controlling agent is selected from at least one selected from the group consisting of compounds represented by formula (I) or (II):




wherein A and B each independently represent a hydrogen atom, a halogen atom, an alkoxyl group, a carboxyl group, a hydroxyl group, an ester group, a nitro group, an amino group, an alkylamino group, an alkyl group which may contain a substituent(s) or a phenyl group which may contain a substituent(s); R represents a hydrogen atom, an alkyl group which may contain a substituent(s), a phenyl group which may contain a substituent(s) or a naphthyl group which may contain a substituent(s); m represents an integer 2 to 16; and n represents an integer 4 to 8.





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