会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Silver halide photographic material
    • 卤化银照相材料
    • US4740454A
    • 1988-04-26
    • US886490
    • 1986-07-17
    • Naoyasu DeguchiTetsuro KojimaHideo MiyazakiShigeru OhnoKoki Nakamura
    • Naoyasu DeguchiTetsuro KojimaHideo MiyazakiShigeru OhnoKoki Nakamura
    • G03C1/06C07D285/12C07D285/125C07D285/135G03C1/035G03C1/09G03C7/392G03C1/34G03C1/02
    • G03C1/09G03C7/39276
    • A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing tabular silver halide grains which have a diameter not less than 5 times the thickness thereof and account for at least 50% of the total projected area of the silver halide grains present in the silver halide emulsion layer and the silver halide photographic material also contains at least one compound represented by following general formulae (I), (II), (III) and (IV): ##STR1## wherein R represents a straight chain, branched chain or cyclic alkylene group, a straight chain or branched chain alkenylene group, a straight chain or branched chain aralkylene group or an arylene group; R.sub.1 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group; Z represents a hydrogen atom or a polar substituent; X represents a hydrogen atom, a cation necessary for neutralizing the molecule or a precursor; and n represents 0 or 1.The silver halide photographic material has improved image sharpness not only at high spatial frequencies but also at low spatial frequencies.
    • 一种卤化银照相材料,包括其上具有至少一种含有片状卤化银颗粒的感光卤化银乳剂层的载体,所述片状卤化银颗粒的直径不小于其厚度的5倍,并且占总投影面积的至少50% 存在于卤化银乳剂层和卤化银照相材料中的卤化银颗粒还含有至少一种由以下通式(I),(II),(III)和(IV)表示的化合物: (III)其中R表示直链,支链或环状亚烷基,直链或支链亚烯基,直链或支链亚芳基或 亚芳基; R1表示取代或未取代的烷基,取代或未取代的烯基,取代或未取代的芳烷基或取代或未取代的芳基; Z表示氢原子或极性取代基; X表示氢原子,中和该分子或前体所必需的阳离子; 并且n表示0或1.卤化银照相材料不仅在高空间频率下而且在低空间频率下具有改善的图像清晰度。
    • 5. 发明授权
    • Direct positive photographic materials
    • 直接正面摄影材料
    • US4945033A
    • 1990-07-31
    • US291017
    • 1988-12-28
    • Naoyasu DeguchiShigeru Ohno
    • Naoyasu DeguchiShigeru Ohno
    • G03C1/485G03C1/825G03C1/83G03C7/00
    • G03C1/832G03C1/48538G03C1/48561
    • A direct positive photographic material which has at least one previously-not-fogged internal latent image-type silver halide emulsion layer on a support, wherein the photographic material contains at least one compound represented by the following formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 represents an alkyl group, an aryl group, a cyano group, --COOR.sub.5, --CONR.sub.5 R.sub.6, --OR.sub.5, --NR.sub.5 R.sub.6, --NR.sub.6 COR.sub.7, --NR.sub.5 CONR.sub.5 R.sub.6, --NR.sub.6 SO.sub.2 R.sub.7 (each of R.sub.5 and R.sub.6 represents a hydrogen atom, an alkyl group or an aryl group; R.sub.7 represents an alkyl or aryl group; R.sub.5 and R.sub.6, or R.sub.6 and R.sub.7 may link together to form a 5- or 6-membered ring); each of R.sub.3 and R.sub.4 represents a hydrogen atom or an alkyl group; each of Q.sub.1 and Q.sub.2 represents an aryl group; each of X.sub.1 and X.sub.2 represents a bond or a divalent linking group; each of Y.sub.1 and Y.sub.2 represents a sulfo group or a carboxyl group; each of L.sub.1, L.sub.2 and L.sub.3 represents a methine group; n represents 0, 1, or 2; each of m.sub.1 and m.sub.2 represents 1 or 2; each of p.sub.1 and p.sub.2 represents 0, 1, 2, 3 or 4; and each of q.sub.1 and q.sub.2 represents 1 or 2.The photographic materials show no change in photographic performance after preservation under high temperature and high humidity and give images of high sharpness.