公开(公告)号：US5478706A

公开(公告)日：1995-12-26

申请号：US206196

申请日：1994-03-03

Applicant: Carlo Marchesano ,  Filippo Faranda ,  Franco Buriano

Inventor： Carlo Marchesano ,  Filippo Faranda ,  Franco Buriano

IPC: G03C5/30 ,  G03C5/305 ,  G03C5/46

CPC classification number: G03C5/305 ,  G03C5/46

Abstract: The present invention relates to an alkaline aqueous black-and-white photographic developer composition comprising:(1) at least one black-and-white developing agent,(2) at least one black-and-white auxiliary developing agent,(3) at least one antifoggant,(4) at least one sequestering agent,(5) a sulfite antioxidant,(6) at least one buffering agent,(7) a tone agent, and(8) at least one tone promoting agent,wherein said tone agent is a primary organic amine compound and said tone promoting agent is a silver halide solvent.

Abstract translation: 本发明涉及一种碱性水性黑白照相显影剂组合物，其包含：（1）至少一种黑白显影剂，（2）至少一种黑白辅助显影剂，（3） 至少一种防灰雾剂，（4）至少一种螯合剂，（5）亚硫酸盐抗氧化剂，（6）至少一种缓冲剂，（7）调和剂，和（8）至少一种促压剂，其中所述 调色剂是主要的有机胺化合物，所述调色剂是卤化银溶剂。

公开(公告)号：US4873180A

公开(公告)日：1989-10-10

申请号：US178251

申请日：1988-04-06

Applicant: Carlo Marchesano ,  Franco Buriano ,  Enrico Furlanetto

Inventor： Carlo Marchesano ,  Franco Buriano ,  Enrico Furlanetto

IPC: G03C7/30 ,  G03C5/305

CPC classification number: G03C5/3053

Abstract: The addition to an aqueous alkaline developer composition for silver halide photographic materials of a dialkylaminomethane diphosphonic acid compound sequestering agent increases the resistance of the developer composition against aerial oxidation and inhibits calcareous deposit formation.

公开(公告)号：US5968720A

公开(公告)日：1999-10-19

申请号：US679745

申请日：1996-07-15

Applicant: Filippo Faranda ,  Franco Buriano ,  Carlo Marchesano

Inventor： Filippo Faranda ,  Franco Buriano ,  Carlo Marchesano

IPC: G03C5/26 ,  C09K3/00 ,  G03C5/38

CPC classification number: G03C5/386

Abstract: A photographic fixer compositions comprising a silver halide solvent, an aluminum salt hardening agent, a buffering agent and ammonium ions in amount of at least 0.20 mol/l, wherein said fixer composition also contains at least an aminopolycarboxylic acid sequestering agent of formula (I-a) or (I-b) or a water-soluble salt thereof and d) at least a polyphosphonic acid sequestering agent of formula (II-a), (II-b), (II-c), (II-d') or (II-d"): ##STR1## wherein the substituents are defined in the specification. The present invention also provides a method of processing an exposed photographic silver halide element comprising the steps of developing by means of a developer comprising a silver halide developing agent and treating the developed element with a fixer composition, wherein the fixer composition is one described above.

Abstract translation: 包含至少0.20mol / l的卤化银溶剂，铝盐硬化剂，缓冲剂和铵离子的照相定影剂组合物，其中所述定影剂组合物还含有至少一种式（Ia）的氨基多羧酸多价螯合剂， 或（Ib）或其水溶性盐，和d）至少一种式（II-a），（II-b），（II-c），（II-d'）或（II）的多膦酸多价螯合剂 -d“）：其中取代基在说明书中定义。 本发明还提供了一种处理曝光的照相卤化银元件的方法，包括以下步骤：利用包含卤化银显影剂的显影剂显影，并用定影剂组合物处理显影元件，其中定影剂组合物是上述的一种。