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    • 5. 发明授权
    • Support with reduced optical brightener migration
    • 支持减少荧光增白剂迁移
    • US06818367B2
    • 2004-11-16
    • US10413933
    • 2003-04-15
    • Elizabeth K. PriebeWilliam A. MrukJames C. PirchnerSuresh Sunderrajan
    • Elizabeth K. PriebeWilliam A. MrukJames C. PirchnerSuresh Sunderrajan
    • G03C1795
    • G03G7/006B41M5/504B41M5/506B41M5/508G03C1/79G03C1/8155G03G7/002G03G7/004Y10S430/134
    • The invention relates to an imaging element comprising an imaging layer and a support, wherein the support comprises a base material having thereon at least two polyolefin layers, wherein the uppermost layer of the at least two polyolefin layers comprises a mixture of optical brighteners comprising a Compound A having the following formula: a Compound B having the following formula: and a Compound C having the following formula: wherein the layers below the uppermost layer of the at least two polyolefin layers comprise migratory optical brightener; and wherein the imaging layer is on the same side of the base material as the at least two polyolefin layers. The inventive support unexpectedly minimizes exudation of the brightener at the polyolefin surface and provides excellent absorption/emission characteristics, brightening power and heat to meet the critical requirements of the photographic field.
    • 本发明涉及包括成像层和支撑体的成像元件,其中所述支撑件包括其上具有至少两个聚烯烃层的基底材料,其中所述至少两个聚烯烃层的最上层包含荧光增白剂的混合物,所述荧光增白剂包含化合物 A具有下式:具有下式的化合物B和具有下式的化合物C:其中至少两个聚烯烃层的最上层下面的层包含迁移性荧光增白剂; 并且其中所述成像层与所述至少两个聚烯烃层在所述基材的同一侧上。 本发明的支架意外地使聚烯烃表面的增白剂的渗出最小化并且提供优异的吸收/排放特性,增亮功率和热量以满足照相场的关键要求。