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    • 2. 发明授权
    • Photographic element containing an electrically-conductive layer
    • 含有导电层的摄影元件
    • US06440654B1
    • 2002-08-27
    • US09825325
    • 2001-04-03
    • Charles C. AndersonMario D. DeLauraDebasis Majumdar
    • Charles C. AndersonMario D. DeLauraDebasis Majumdar
    • G03C189
    • G03C1/7614G03C1/85G03C1/89G03C5/28G03C7/00G03C2001/7635G03C2200/41
    • A photographic imaging element is disclosed which comprises a support having on one side thereof at least one silver halide emulsion layer and having, in order, on the opposite side thereof an electrically-conductive layer coated from a coating composition comprising a polythiophene/polyanion composition containing a polythiophene with conjugated polymer backbone component and a polymeric polyanion component, and a protective topcoat comprised of a polyurethane binder which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in2; wherein the electrical resistivity of the electrically-conductive layer before photographic processing is less than 2×109 &OHgr;/□, after photographic processing is between 1×109 &OHgr;/□ and 1×1011 &OHgr;/□, and increases by at least one order of magnitude as a result of photographic processing. Photographic imaging elements of the invention effectively minimize both raw (pre-photographic processing) static marking and processed (after photographic processing) photographic element sticking caused by the accumulation of electrostatic charges, and additionally have excellent resistance to scratch and abrasion.
    • 公开了一种照相成像元件,其包括在其一侧上具有至少一个卤化银乳剂层的支撑体,并且依次在其相对侧上具有由包含聚噻吩/聚阴离子组合物的涂层组合物涂覆的导电层,所述涂料组合物含有 具有共轭聚合物主链组分的聚噻吩和聚合物聚阴离子组分,以及由聚氨酯粘合剂组成的保护性面漆,所述聚氨酯粘合剂具有至少50%的拉伸伸长率和至少50000磅/英寸2的2%伸长时测量的杨氏模量 ; 其中在照相处理之前导电层的电阻率小于2×10 9欧米亚/平方厘米,在照相处理在1×10 9欧米亚/平方英寸和1×10 11欧米加/平方之间,并且由于照相而增加至少一个数量级 处理。 本发明的摄影成像元件有效地使原始(预照相处理)静态标记和由静电电荷累积引起的(照相处理)照相元件粘附之后的处理(另外具有优异的耐划伤和磨损性)。
    • 6. 发明授权
    • Photographic paper backing containing polymeric primary amine addition
salt
    • 含有聚合伯胺加成盐的照相纸背衬
    • US6077656A
    • 2000-06-20
    • US305933
    • 1999-05-06
    • Debasis MajumdarCharles C. AndersonRichard A. Castle
    • Debasis MajumdarCharles C. AndersonRichard A. Castle
    • G03C1/053G03C1/79G03C1/85G03C1/89
    • G03C1/85G03C1/053
    • The present invention is a photographic element including a substrate with a polyolefin resin layer, which is preferably polypropylene, on each surface of the said substrate. The photographic paper includes a print or backmark retaining and spliceable antistatic layer having a dry coverage of from 10 mg/m.sup.2 to 10,000 mg/m.sup.2 on one of the free surfaces of the polyolefin layers. An imaging layer may be superimposed on the other free surface of the polyolefin layers. The antistatic layer includes a (i) conductive agent, preferably a combination of an alkali metal salt and a polymerized alkylene oxide, (ii) a positively charged colloidal oxide sol and (iii) a film forming binder which is an interpolymer of a primary amine addition salt with a peel strength of 200 g or above on the polyolefin surface on which the antistatic layer of the present invention is to be formed. The antistatic layer is expected to provide surface electrical resistivity of less than 12 log .OMEGA./, preferably equal to or less than 11 log .OMEGA./, and excellent backmark retention characteristics and spliceability for commercial photofinishing equipment such as the Gretag CLAS 35 printers.
    • 本发明是在所述基板的每个表面上包括具有聚烯烃树脂层的基材(其优选为聚丙烯)的照相元件。 照相纸包括在聚烯烃层的一个自由表面上具有10mg / m 2至10,000mg / m 2的干覆盖率的印刷或背面保持和可拼接的抗静电层。 成像层可以叠加在聚烯烃层的另一自由表面上。 抗静电层包括(i)导电剂,优选碱金属盐和聚合的烯化氧的组合,(ii)带正电荷的胶体氧化物溶胶和(iii)作为伯胺的互聚物的成膜粘合剂 在其上将形成本发明的抗静电层的聚烯烃表面上具有剥离强度为200g以上的加成盐。 预计抗静电层的表面电阻率小于12log OMEGA / + Z,优选等于或小于11log OMEGA / + Z,以及商业照相洗印加工设备(如Gretag CLAS 35)的优异的背标保持特性和可拼接性 打印机
    • 8. 发明授权
    • Antistatic backing for photographic paper
    • 防静电背衬用于相纸
    • US06171769B2
    • 2001-01-09
    • US09305950
    • 1999-05-06
    • Debasis MajumdarCharles C. Anderson
    • Debasis MajumdarCharles C. Anderson
    • G03C179
    • G03C1/85G03C1/04G03C1/79
    • The present invention is a photographic element including a support with a polyolefin resin layer, which is preferably polypropylene, on each surface of the support. The photographic element includes a print or backmark retaining and spliceable antistatic layer having a dry coverage of from 10 mg/m2 to 10,000 mg/m2 on one of the free surfaces of the polyolefin layers. An imaging layer may be superimposed on the other free surface of the polyolefin layers. The antistatic layer includes a (i) conductive agent, preferably a combination of an alkali metal salt and a polymerized alkylene oxide, (ii) colloidal silica, preferably aluminum modified colloidal silica and (iii) a polymeric film-forming binder with a peel strength of 200 g or above on a polypropylene surface on which the antistatic layer of the present invention is to be formed. Such an antistatic layer is expected to provide surface electrical resistivity of less than 12 log &OHgr;/□, preferably equal to or less than 11 log &OHgr;/□, and excellent backmark retention characteristics and spliceability for commercial photofinishing equipment such as the Gretag CLAS 35 printers.
    • 本发明是一种照相元件,其包括在支撑体的每个表面上具有聚烯烃树脂层的支撑体,其优选为聚丙烯。 照相元件包括在聚烯烃层的一个自由表面上具有10mg / m 2至10,000mg / m 2的干覆盖率的印刷或背面保持和可拼接的抗静电层。 成像层可以叠加在聚烯烃层的另一自由表面上。 抗静电层包括(i)导电剂,优选碱金属盐和聚合的烯化氧的组合,(ii)胶体二氧化硅,优选铝改性的胶体二氧化硅和(iii)具有剥离强度的聚合物成膜粘合剂 在其上将形成本发明的抗静电层的聚丙烯表面上为200g以上。 预期这种抗静电层的表面电阻率小于12logΩ/平方,优选等于或小于11logΩ/平方,以及用于商业照相洗印加工设备如Gretag CLAS 35打印机的优异的背标保持特性和可拼接性 。