公开(公告)号：US06670111B2

公开(公告)日：2003-12-30

申请号：US10236622

申请日：2002-09-05

申请人： Corrado Balestra ,  Mauro Besio ,  Emilio Prosperi

发明人： Corrado Balestra ,  Mauro Besio ,  Emilio Prosperi

IPC分类号： G03C140

CPC分类号： C09B67/0084 ,  G03C1/005 ,  G03C1/832 ,  G03C2200/22 ,  G03C2200/25

摘要： The present invention refers to a process for preparing a dispersion which comprises codispersing in an aqueous medium a sucrose derivative represented by the following general formula (1), wherein substituents X1 to X8, being the same or different, are represented by a hydrogen atom, an alkyl group or an acyl group, with the proviso that at least four of the X1 to X8 substituents are different from hydrogen and that the total sum of the carbon atoms of X1 to X8 substituents is at least sixteen; and a photographic compound represented by the following general formula (2), wherein R and R1 each independently represent a hydrogen atom, an alkyl group, an alkylene group, a heterocyclic group or an aryl group; R2, R3 and R4 each independently represent a hydrogen atom, an alkyl group, an aryl group and R3 and R4 may be combined to form a 6-membered ring. The present invention also refers to a photographic dispersion comprising a sucrose derivative represented by previous general formula (1) and a photographic compound represented by previous general formula (2) dispersed in an aqueous medium and to a photographic element comprising a film support base having coated on one side thereof at least one hydrophilic colloid emulsion layer comprising said photographic dispersion. The process of the present invention allows photographic dispersions to display a narrow drop size distribution curve even when stored for a long period of time (30 days) in cold room.

摘要翻译： 本发明涉及一种制备分散体的方法，其包括在水性介质中共混以下述通式（1）表示的蔗糖衍生物，其中相同或不同的取代基X1至X8由氢原子表示， 烷基或酰基，条件是至少四个X 1至X 8取代基不同于氢，并且X 1至X 8取代基的碳原子总和至少为16; 和由以下通式（2）表示的照相化合物，其中R和R 1各自独立地表示氢原子，烷基，亚烷基，杂环基或芳基; R2，R3和R4各自独立地表示氢原子，烷基，芳基和R3和R4可以组合形成6-元环。本发明还涉及包含由前述 分散在水性介质中的由通式（1）表示的照相化合物和由前述通式（2）表示的照相化合物和包含在其一面上涂覆有至少一个包含所述照相分散体的亲水胶体乳剂层的薄膜载体的照相元件。 本发明的方法即使在冷室中长时间（30天）储存时，照相分散体也能显示出窄的液滴尺寸分布曲线。

公开(公告)号：US06261756B1

公开(公告)日：2001-07-17

申请号：US09576529

申请日：2000-05-23

申请人： Raffaella Biavasco ,  Emilio Prosperi ,  Roberto Sardelli

发明人： Raffaella Biavasco ,  Emilio Prosperi ,  Roberto Sardelli

IPC分类号： G03C108

CPC分类号： G03C7/3225 ,  G03C7/3335 ,  G03C7/384

摘要： The present invention refers to a light-sensitive silver halide multilayer color photographic element having a support base and coated thereon blue-, green- and red-sensitive silver halide emulsion layers respectively associated with non-diffusing yellow, magenta and cyan dye-forming couplers, wherein at least one green-sensitive layer contains a 2-equivalent 3-anilino-4-phenylthio-5-pyrazolone magenta coupler and a 4-(4-hydroxy-phenylazo)-5-pyrazolone colored magenta coupler. The multilayer color photographic element of the present invention presents an improved speed and contrast, without a detrimental effect on the other sensitometric properties, such as Dmin and Dmax.

摘要翻译： 本发明涉及一种具有支撑基底的感光卤化银多层彩色照相材料，并在其上涂覆蓝色，绿色和红色敏感的卤化银乳剂层，分别与非扩散黄色，品红色和青色染料形成成色剂 ，其中至少一个感光层含有2-当量3-苯胺基-4-苯硫基-5-吡唑啉酮品红成色剂和4-（4-羟基 - 苯偶氮）-5-吡唑啉酮色品红色成色剂。多层彩色照相 本发明的元件具有改进的速度和对比度，而不对其它感光性质（例如Dmin和Dmax）产生不利影响。

公开(公告)号：US5821042A

公开(公告)日：1998-10-13

申请号：US862118

申请日：1997-05-22

申请人： Sergio Massirio ,  Massimo Bertoldi ,  Giovanni Giusto ,  Emilio Prosperi ,  Roberto Sardelli

发明人： Sergio Massirio ,  Massimo Bertoldi ,  Giovanni Giusto ,  Emilio Prosperi ,  Roberto Sardelli

IPC分类号： G03C7/00 ,  G03C1/43 ,  G03C1/76 ,  G03C1/825 ,  G03C7/30 ,  G03C7/305 ,  G03C7/34 ,  G03C7/392 ,  G03C5/44 ,  G03C1/183

CPC分类号： G03C7/30541 ,  G03C7/3029 ,  G03C7/39236

摘要： A multilayer silver halide color photographic element comprises a support having coated thereon a silver antihalation layer, an interlayer, at least two red-sensitive silver halide emulsion layers, at least two green-sensitive silver halide emulsion layers a yellow filter layer, and at least two blue-sensitive silver halide emulsion layers, wherein the interlayer provided between the silver antihalation layer and the red-sensitive silver halide emulsion layer closest to the support contains a bleach accelerator releasing compound, and the silver antihalation layer contains a water-soluble organic thiol. The invention provides reduction in residual silver levels and backside turbidity after processing, without deleteriously affecting sensitometric properties of the photographic element.

摘要翻译： 多层卤化银彩色照相元件包括其上涂有银防晕层，中间层，至少两个感红卤化银乳剂层，至少两个感绿卤化银乳剂层，黄色过滤层和至少 两个感蓝卤化银乳剂层，其中设置在银防晕层和最靠近载体的感红卤化银乳剂层之间的中间层含有漂白促进剂释放化合物，银防晕层含有水溶性有机硫醇 。 本发明提供了处理后残留银水平和背面浊度的降低，而不会有害地影响照相元件的感光特性。