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11.发明授权公开(公告)号：US07198889B2
公开(公告)日：2007-04-03
申请号：US10460142
申请日：2003-06-12
CPC分类号： G03C1/49881 , G03C1/0051 , G03C1/49818 , G03C1/49845 , G03C5/16 , G03C2005/168 , Y10S430/158 , Y10S430/167
摘要： The present invention is directed to a method of forming a positive image in a photothermographic element comprising a potentially negative-working emulsion wherein fog density development is imagewise inhibited in exposed areas of the image upon thermal development, the element further comprising a developer or precursor thereof and an oxidized developer scavenging agent to accelerate development by removing oxidized developer as it is formed during the thermal development step. In one embodiment of the invention, in which a density-inhibiting agent is released during thermal development that inhibits the thermal development of unexposed silver salts in the exposed areas relative to the unexposed areas, the method comprises imagewise exposing the film with a non-solarizing amount of radiation/energy to form a latent image and thermally developing the latent image in a single development step to produce a positive image in the element. The present invention is also directed to a photothermographic element that can be used in the present process in which a positive image characterized by high speed and discrimination is formed when exposed and thermally heated above 150° C.
摘要翻译： 本发明涉及一种在光热敏成像元件中形成正像的方法，该光热敏成像元件包括潜在的负性乳液，其中在热显影时图像的暴露区域中的雾密度显影被成像地抑制，该元件还包含其显影剂或前体 和氧化显影剂清除剂，通过在热显影步骤中形成的氧化显影剂除去氧化显影剂来加速显影。 在本发明的一个实施方案中，其中在热显影期间释放密度抑制剂，其抑制相对于未曝光区域的曝光区域中未曝光的银盐的热显影，该方法包括以非日晒的方式使膜成像曝光 辐射量/能量以形成潜像，并且在单个显影步骤中热显影潜像，以在元件中产生正像。 本发明还涉及一种光热敏成像元件，其可用于本发明的曝光和热加热至150℃以上形成以高速和鉴别为特征的正像。
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公开(公告)号：US5219723A
公开(公告)日：1993-06-15
申请号：US774440
申请日：1991-10-10
CPC分类号： G03C1/18
摘要： A variable contrast photographic element containing a light sensitive silver halide emulsion layer is disclosed wherein the silver halide is sensitized with a benzimidazolooxacarbocyanine dye of the following formula (I) in an amount less than that required to impart maximum sensitivity to all of the silver halide in the emulsion. ##STR1## In formula (I), R.sup.1, R.sup.2, R.sup.6 and R.sup.7 each independently represent hydrogen, halogen, hydroxy, or substituted or unsubstituted alkyl, alkenyl, alkoxy, alkylamino, alkylthio, aryl, aryloxy, arylamino, or arylthio. R.sup.3 and R.sup.4 each independently represent substituted or unsubstituted alkyl. R.sup.5 represents a substituent containing an electron withdrawing group. X represents a counterion as needed to balance the charge of the molecule. Use of dyes of formula (I) having an R.sup.5 substituent which contains an electron withdrawing group has been found to beneficially reduce the sensitivity of variable contrast photographic elements at wavelengths longer than 570 nm, thereby enhancing safelight tolerance, while still maintaining good spectral sensitivity at wavelengths in the green region less than 560 nm.
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公开(公告)号：US06229624B1
公开(公告)日：2001-05-08
申请号：US09057903
申请日：1998-04-09
IPC分类号： B41B1500
CPC分类号： H04N1/6027 , H04N1/6086 , H04N1/6088 , H04N1/6097
摘要： A method for selecting an aim curve for a desired medium having a predetermined maximum density, including selecting an aim curve from a family of aim curves for a different medium having a lower predetermined maximum density than that of the desired medium, the aim curve having shadow, midtone, and highlight regions; varying the shadow contrast in the shadow region of the selected aim curve to produce a different aim curve; and determining the different aim curve with the desired medium that has an improved shadow contrast that will produce prints with reduced flare and permits a better fit of the dynamic range of the original scene to the dynamic range of the medium.
摘要翻译： 一种用于选择具有预定最大密度的期望介质的目标曲线的方法，包括从具有比预期介质的预定最大密度低的不同介质的目标曲线族选择目标曲线，目标曲线具有阴影 ，中音和高光区域; 改变所选目标曲线的阴影区域中的阴影对比度，以产生不同的目标曲线; 并且使用具有改善的阴影对比度的期望介质来确定不同的目标曲线，该对比度将产生具有减少的耀斑的打印，并且允许将原始场景的动态范围更好地拟合到介质的动态范围。
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公开(公告)号：US5597687A
公开(公告)日：1997-01-28
申请号：US545368
申请日：1995-10-19
申请人： Thomas R. Dobles , David A. DuMont , Paul B. Gilman , Sang H. Kim , Steven G. Link , Richard L. Parton
发明人： Thomas R. Dobles , David A. DuMont , Paul B. Gilman , Sang H. Kim , Steven G. Link , Richard L. Parton
CPC分类号： G03C1/29
摘要： A supersensitizing dye combination for silver halide photographic materials is disclosed. The combination is of a first dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus,each L independently represents a substituted or unsubstituted methine group,n is a positive integer of from 1 to 4,p and q each independently represents 0 or 1,X represents a cation as needed to balance the charge of the molecule,A and A' each independently represents a divalent linking group such that at least one of H--A--SO.sub.3 H and H--A'--SO.sub.3 H would each have a log P value that is more negative than -0.3, anda second dye, having an oxidation potential that is at least about 0.08 volts less positive than the oxidation potential of the first dye and a reduction potential that is equal to or more negative than the reduction potential of the first dye, according to the formula: ##STR2## Z.sub.3 and Z.sub.4 each independently represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus,each L independently represents a substituted or unsubstituted methine group,m is a positive integer of from 1 to 4,r and s each independently represents 0 or 1,X' represents a counterion as needed to balance the charge of the molecule,R.sub.3 and R.sub.4 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl.
摘要翻译： 公开了用于卤化银照相材料的超敏化染料组合。 该组合是根据下式的第一种染料：并且表示完成取代或未取代的杂环核所需的原子，每个L独立地表示取代或未取代的次甲基，n是1至4的正整数，p和 q各自独立地表示0或1，X表示用于平衡分子的电荷所需的阳离子，A和A'各自独立地表示二价连接基团，使得HA-SO 3 H和H-A'-SO 3 H中的至少一个将 每个具有比-0.3更负的对数P值，并且具有比第一染料的氧化电位小至少约0.08伏的氧化电位的第二染料和等于或等于或等于或等于 根据下列公式，阴性比第一种染料的还原电位：完成取代或未取代的杂环核所必需的e原子，每个L独立地表示取代或未取代的 次甲基，m为1至4的正整数，r和s各自独立地表示0或1，X'表示平衡分子电荷所需的抗衡离子，R 3和R 4各自独立地表示取代或未取代的烷基 或取代或未取代的芳基。
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15.发明授权Direct-positive double exposure process utilizing a primitive, unfogged silver halide emulsion containing an electron acceptor 失效使用包含电子接收器的主要的，未加成型的银卤素乳液的直接双重曝光过程
公开(公告)号：US4011081A
公开(公告)日：1977-03-08
申请号：US554932
申请日：1975-03-03
申请人： Paul B. Gilman , John V. Morgan
发明人： Paul B. Gilman , John V. Morgan
CPC分类号： G03C1/48538
摘要： Processes are disclosed for obtaining positive images in an unfogged, primitive, silver halide emulsion wherein a photographic element comprising a support and said emulsion are imagewise-exposed with a low-intensity light, given an over-all flash exposure with a high-intensity light and developed in a silver halide developer. In one aspect, the silver halide emulsions of this invention are primitive, unfogged, silver halide emulsions which comprise an electron acceptor.
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公开(公告)号：US6072605A
公开(公告)日：2000-06-06
申请号：US990067
申请日：1997-12-12
CPC分类号： H04N1/4072
摘要： A method which substantially maintains the exposure latitude contained in one or more digital images captured in linear form and which uses an output device with a predetermined aim curve for producing visual images from such digital image includes the steps of selecting a particular reference portion of the scene corresponding to the digital image and adjusting the code value of such reference portion to a code value corresponding to a desired density and which corresponds to a point on the aim curve and changing the remaining code values of the digital image based upon the selected code value of the point on the aim curve so that a new digital image in linear form is produced; transforming the new digital image to form a third digital image which has code values based on the aim curve; and producing visual images by the output device in response to the transformed third digital image.
摘要翻译： 一种基本保持包含在以线性形式捕获的一个或多个数字图像中的曝光宽容度的方法，并且使用具有预定目标曲线的输出装置从该数字图像产生视觉图像的方法包括以下步骤：选择场景的特定参考部分 对应于数字图像，并将这种参考部分的代码值调整为对应于期望密度并对应于目标曲线上的点的代码值，并且基于所选择的代码值来改变数字图像的剩余代码值 目标曲线上的点，使得生成线性形式的新数字图像; 转换新的数字图像以形成基于目标曲线的具有代码值的第三数字图像; 以及响应于变换的第三数字图像，由输出装置产生视觉图像。
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17.发明授权J-aggregating dye polymers as spectral sensitizers for silver halide photographic compositions 失效J聚集染料聚合物作为卤化银照相组合物的光谱增感剂
公开(公告)号：US4950587A
公开(公告)日：1990-08-21
申请号：US239864
申请日：1988-09-02
CPC分类号： G03C1/12 , C09B69/105 , G03C1/04
摘要： Dye polymers are disclosed that J-aggregate in solution and when adsorbed to silver halide. These polymers comprise polymer repeat units having covalently bonded thereto cyanine dye units comprising two benzimidazole nuclei, in an amount sufficient to J-aggregate.
摘要翻译： 公开了染料聚合物，其在溶液中并且当吸附到卤化银上时聚集。 这些聚合物包含具有共价键合的包含两个苯并咪唑核的花青染料单元的聚合物重复单元，其量足以使其聚集。
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