(19)
(11) EP 0 566 323 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.03.1994 Bulletin 1994/12

(43) Date of publication A2:
20.10.1993 Bulletin 1993/42

(21) Application number: 93302781.5

(22) Date of filing: 08.04.1993
(51) International Patent Classification (IPC)5: G03C 5/305
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 13.04.1992 JP 92947/92

(71) Applicant: KONICA CORPORATION
Tokyo 160 (JP)

(72) Inventors:
  • Inoue, Kenichi, Konica Corporation
    Hino-shi, Tokyo (JP)
  • Mitsuhashi, Tsuyoshi, Konica Corporation
    Hino-shi, Tokyo (JP)

(74) Representative: Ellis-Jones, Patrick George Armine 
J.A. KEMP & CO. 14 South Square Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)


(56) References cited: : 
   
       


    (54) Developer for silver halide photographic light-sensitive material


    (57) A developer for developing a silver halide photographic material is disclosed. The developer comprises a compound represented by Formula 1 or Formula 2 ;




    wherein R1, R2 R3, and R4 are each a hydrogen atom or an alkyl group having 1 to 3 carbon atoms provided that both of R1 and R2 are not hydrogen atoms at the same time ; R5 is a hydroxy group, an amino group or an alkyl group having 1 to 3 carbon atoms ; R6 and R7 are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an acyl group having 1 to 18 carbon atoms or a -COOM2 group, provided that both of R1 and R2 are not hydrogen atoms at the same time, in the above M1 is a hydrogen atom, an alkali metal atom or an ammonium group ; m is an integer 0, 1 or 2 ; M2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkali metal atom, an aryl group or an aralkyl group having not more than 15 carbon atoms. Formation of silver sludge in the developer is prevented.





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