Patent search ap:("POLAROID CORP") AND inv:"GONDOLFE JAMES D" Page 1

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发明授权
Diffusion transfer photographic elements comprising 5-hydroxy-4-azabenzimidazole and a second azabenzimidazole,and processes for their use 失效
Title translation: 包含5-羟基-4-氮杂苯并咪唑和第二AZABENZIMIDAZO的扩散转移摄影元件及其使用方法

公开(公告)号：US3687660A

公开(公告)日：1972-08-29

申请号：US3687660D

申请日：1970-10-15

Applicant: POLAROID CORP

Inventor： GONDOLFE JAMES D , SEANLAN RUTH , WARD JEANNE A

IPC: G03C1/34 , G03C8/00 , G03C5/54 , G03C7/00

CPC classification number: G03C8/00 , G03C1/34

Abstract: A NOVEL COMBINATION OF AZEBENZIMIDAZOLES IS USED FOR THE PREVENTION OF FOG FORMATION IN DIFFUSION TRANSFER PHOTOGRAPHIC PROCESSES, WHICH COMBINATION RESULTS IN A DYNAMIC RANGE EXTENSION OF THE PHOTOGRAPHIC SYSTEM.

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