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    Silver halide photographic emulsion and silver halide photographic lightsensitive material using the same
    1.
    发明授权
    Silver halide photographic emulsion and silver halide photographic lightsensitive material using the same 有权
    卤化银照相乳剂和卤化银照相感光材料使用相同

    公开(公告)号：US07371512B2

    公开(公告)日：2008-05-13

    申请号：US09778874

    申请日：2001-02-08

    申请人： Mikio Ihama

    发明人： Mikio Ihama

    IPC分类号： G03C1/005

    CPC分类号： G03C1/005 ,  G03C1/0051 ,  G03C2001/0055 ,  G03C2001/0156 ,  G03C2001/03552 ,  G03C2200/03

    摘要： A silver halide photographic emulsion comprising grains is characterized that 70% or more of the total projected area of the grains are occupied by tabular grains meeting requirements (i) to (v) below: (i) silver bromochloroiodide grains having (111) faces as major surfaces, (ii) hexagonal grains having a ratio of the length of an edge having the maximum length to the length of an edge having the minimum length of not more than 2, (iii) perfect epitaxial grains having a total of six epitaxial junctions each existing only in each of six apex portions of the hexagonal grains, (iv) the silver chloride content is 1 to 6 mol %, and (v) the silver iodide content is 0.5 to 10 mol %.

    摘要翻译： 包含颗粒的卤化银照相乳剂的特征在于，满足以下（i）至（v）的要求的片状颗粒占据了颗粒总投影面积的70％或更多：（i）具有（111）面的银溴氯碘化物颗粒 主表面，（ii）具有最大长度的边缘的长度与具有最小长度不超过2的边缘的长度的比率的六边形晶粒，（iii）具有总共六个外延结的完美外延晶粒 每个仅存在于六边形晶粒的六个顶点中的每一个中，（iv）氯化银含量为1〜6摩尔％，（v）碘化银含量为0.5〜10摩尔％。

    Method of preparing ultrathin light-sensitive tabular grain emulsions rich in silver bromide
    4.
    发明申请
    Method of preparing ultrathin light-sensitive tabular grain emulsions rich in silver bromide 失效

    公开(公告)号：US20020037485A1

    公开(公告)日：2002-03-28

    申请号：US09902950

    申请日：2001-07-11

    发明人： Kathy Elst ,  Ilse Mans

    IPC分类号： G03C001/035

    CPC分类号： G03C1/0051 ,  G03C1/047 ,  G03C1/46 ,  G03C5/16 ,  G03C2001/0055 ,  G03C2001/0156 ,  G03C2001/03511 ,  G03C2001/0357 ,  G03C2005/168 ,  G03C2200/03 ,  G03C2200/27 ,  G03C2200/44 ,  G03C2200/60 ,  Y10S430/167 ,  Y10S430/168

    摘要： A method has been described of preparing an ultrathin tabular grain emulsion rich in silver bromide, having null111null major faces, wherein tabular grains having a thickness of less than 0.08 nullm exhibit an average aspect ratio of more than 5:1 and account for at least 75%, and more preferably at least 80%, by number of hexagonal grains and a coefficient of variation on average equivalent surface area of less than 0.50, said process comprising: introducing into a temperature-controlled reaction vessel an aqueous dispersing medium and silver, bromide, and, optionally, iodide and/or chloride, and maintaining pBr values within said reaction vessel during grain nucleation and growth that favors the formation and growth of tabular grains, characterized in that at the time said tabular grains are being formed, (a) pH in said reaction vessel is maintained at a value ranging from 0.8 to 10; (b) a gelatino-peptizer is present in the reaction vessel in a concentration of from 0 to 50 g per liter of said dispersing medium, and (c) pBr within said reaction vessel having a value of at least 1.8 is maintained during grain nucleation, wherein nucleation is performed in a reaction vessel at a temperature in the range from 10-60null C. and a pBr value within said reaction vessel is maintained at a value of less than 2.4 during growth, wherein growth is performed in a reaction vessel at a temperature in the range from 40-80null C., and more preferably in the range between 40 and 50null C. in order to reach a grain thickness of less than 0.06 nullm, provided that a gelatin peptizer which is free from calcium ions and has a methionine content of less than 30 micromoles per gram of gelatino-peptizer is present in said dispersing medium during grain nucleation and growth. Moreover a photographic material comprising an emulsion prepared according to the method of the present invention has been claimed.

    Photosensitive silver halide element with increased photosensitivity
    5.
    发明授权
    Photosensitive silver halide element with increased photosensitivity 有权
    光敏卤化银元素具有增加的光敏性

    公开(公告)号：US06344311B1

    公开(公告)日：2002-02-05

    申请号：US09667219

    申请日：2000-09-21

    申请人： René De Keyzer ,  Mona Treguer ,  Jacqueline Belloni ,  Remita Hynd

    发明人： René De Keyzer ,  Mona Treguer ,  Jacqueline Belloni ,  Remita Hynd

    IPC分类号： G03C1015

    CPC分类号： G03C1/08 ,  G03C1/015 ,  G03C1/035 ,  G03C1/498 ,  G03C2001/0156 ,  G03C2001/03511 ,  G03C2001/03535 ,  G03C2001/03594 ,  G03C2200/44

    摘要： A photosensitive element comprising a silver halide emulsion having silver halide grains containing an organic hole-trapping dopant. In a preferred embodiment said dopant is represented by formula (I): R—COOM  (I) wherein R is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group or hetero-aryl group, and M is hydrogen or any metal or organic group which can form a salt or by formula (II):  wherein: X and Y are independently selected from 0, S, Se, m is 1 and n is 1 or 2, R1 and R2 are hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl or aralkyl group or a substituted or unsubstituted heteroaryl group, wherein R1 and R2 may be the same or different and may form a ring, E represents a group linked to the carbon atom by a heteroatom, having at least one free electron pair, M+ is a proton or an organic or inorganic (metal) counterion. Moreover the invention provides a photosensitive element where said photosensitive element can be a photoadressable thermographic element. The invention also provides a method for preparing said photosensitive element comprising a support and on one or both sides thereof at least one silver halide emulsion layer wherein the silver halide grains are doped with an organic hole-trapping dopant according to formula (I) or (II), optionally carried out in the presence of a oxidizing agent.

    摘要翻译： 一种感光元件，其包含卤化银乳剂，其具有含有有机空穴俘获掺杂剂的卤化银颗粒。 在优选实施方案中，所述掺杂剂由式（I）表示：其中R是氢，取代或未取代的烷基，取代或未取代的芳基，取代或未取代的芳烷基或杂芳基，M是氢或任何金属 或可以通过式（II）形成盐的有机基团：其中：X和Y独立地选自0，S，Se，m是1，n是1或2，R1和R2是氢，取代或未取代的烷基 基团，取代或未取代的芳基或芳烷基或取代或未取代的杂芳基，其中R 1和R 2可以相同或不同，并且可以形成环，E表示通过杂原子与碳原子连接的基团，具有至少一个 自由电子对，M +是质子或有机或无机（金属）抗衡离子。此外，本发明提供了一种光敏元件，其中所述感光元件可以是光可加压热敏成像元件。 本发明还提供了一种制备所述感光元件的方法，所述光敏元件包括载体，并且在其一侧或两侧上具有至少一个卤化银乳剂层，其中卤化银颗粒掺杂有根据式（I）或（I）的有机空穴捕获掺杂剂， II），任选在氧化剂存在下进行。

    Grain growth process for the preparation of high bromide ultrathin tabular grain emulsions
    7.
    发明授权
    Grain growth process for the preparation of high bromide ultrathin tabular grain emulsions 失效
    用于制备高溴化物超薄片状颗粒乳剂的晶粒生长过程

    公开(公告)号：US5418125A

    公开(公告)日：1995-05-23

    申请号：US303843

    申请日：1994-09-08

    申请人： Joe E. Maskasky

    发明人： Joe E. Maskasky

    IPC分类号： G03C1/015 ,  G03C1/005 ,  G03C1/035 ,  G03C1/07

    CPC分类号： G03C1/0051 ,  G03C1/07 ,  G03C2001/0055 ,  G03C2001/0153 ,  G03C2001/0156 ,  G03C2001/03594 ,  G03C2200/03 ,  G03C2200/44

    摘要： A grain growth process is disclosed for providing an ultrathin tabular grain emulsion in which the average equivalent circular diameter of tabular grains is increased. An aqueous dispersion is provided containing high bromide grains having an average thickness of less or equal to that of the ultrathin tabular grains to be produced, the dispersion having a pH in the range of from 2 to 8 and a limited stoichiometric excess of bromide ions. An 8-hydroxyquinoline that contains at least one iodo substituent is introduced into the dispersing medium as a grain growth modifier. The aqueous dispersion containing the iodo-8-hydroxyquinoline grain growth modifier is held at 40.degree. C. or a convenient higher temperature until greater than 50 percent of total grain projected area is accounted for by ultrathin tabular grains having {111} major faces of a higher average equivalent circular diameter than the starting grains and an average aspect ratio of at least 5.

    摘要翻译： 公开了一种晶粒生长方法，用于提供其中片状颗粒的平均当量圆直径增加的超薄片状颗粒乳剂。 提供了一种水性分散体，其含有平均厚度小于或等于待生产的超薄片状颗粒的平均厚度的高溴化物颗粒，该分散体具有在2至8范围内的pH和有限的化学计量过量的溴离子。 将含有至少一个碘取代基的8-羟基喹啉作为晶粒生长改性剂引入到分散介质中。 含有碘-8-羟基喹啉晶粒生长改性剂的水性分散体保持在40℃或方便的较高温度，直到总颗粒投影面积的大于50％是由具有{111}主面的{111}主面的超薄片状颗粒 平均等效圆直径比起始颗粒高，平均纵横比至少为5。

    High tabularity high chloride emulsions with inherently stable grain faces
    8.
    发明授权
    High tabularity high chloride emulsions with inherently stable grain faces 失效
    具有固有稳定颗粒面的高平板状高氯化物乳液

    公开(公告)号：US5292632A

    公开(公告)日：1994-03-08

    申请号：US35349

    申请日：1993-03-22

    申请人： Joe E. Maskasky

    发明人： Joe E. Maskasky

    IPC分类号： G03C1/005 ,  G03C1/047 ,  G03C1/07 ,  G03C1/16 ,  G03C1/18 ,  G03C1/035

    CPC分类号： G03C1/0053 ,  G03C1/047 ,  G03C1/07 ,  G03C1/16 ,  G03C1/18 ,  G03C2001/0055 ,  G03C2001/0156 ,  G03C2001/03511 ,  G03C2001/03558 ,  G03C2001/03594 ,  G03C2200/01

    摘要： A radiation sensitive emulsion is disclosed containing a silver halide grain population internally free of iodide at the site of grain nucleation comprised of at least 50 mole percent chloride, based on total silver forming the grain population, in which greater than 30 percent of the grain population projected area is accounted for by tabular grains having a mean thickness of less than 0.3 .mu.m. The tabular grains combine high tabularities and relatively high aspect ratios with exceptional stability imparted by parallel major faces lying in {100} crystallographic planes.

    摘要翻译： 公开了一种辐射敏感性乳剂，其基于形成颗粒群体的总银，含有在至少50摩尔百分比的氯化物的颗粒成核位置处内部不含碘化物的卤化银颗粒群，其中大于30％的谷粒 投影面积由平均厚度小于0.3（my）m的片状颗粒计算。 片状颗粒结合了高平板状和相对高的纵横比，并且具有由位于（100）晶面中的平行主面赋予的出色的稳定性。