公开(公告)号：US3856522A

公开(公告)日：1974-12-24

申请号：US31840272

申请日：1972-12-26

Applicant: POLAROID CORP

Inventor： GEORGE L ,  SAHATJIAN R

IPC: G03C8/54 ,  G03C8/52 ,  G03C7/00 ,  G03C1/40 ,  G03C5/54

CPC classification number: G03C8/52

Abstract: Novel photographic products for use in color diffusion transfer systems employing a neutralizing layer for lowering the environmental pH after application of an aqueous alkaline processing fluid and a ''''timing'''' or spacer layer so disposed with respect to the neutralizing layer that the processing fluid must first diffuse through the spacer layer before contacting the neutralizing layer, the essence of the invention being employing as the spacer layer comprising, as a continuous phase, the coalesced essence of an aqueous filmforming synthetic polymer dispersion which is substantially impermeable to the processing fluid and a discontinuous phase consisting essentially of polyvinyl alcohol.

Abstract translation: 用于彩色扩散转移系统的新型照相产品，其使用中和层，以在施加碱性处理流体水溶液之后降低环境pH，并且相对于中和层设置相对于中和层的“定时”或间隔层，处理液必须首先扩散 在与中和层接触之前通过间隔层，本发明的本质用作间隔层，其包括作为连续相的水性成膜合成聚合物分散体的聚结本质，其对于加工流体基本上不可渗透和不连续相 基本上由聚乙烯醇组成。