摘要:
The invention generally relates to a process for forming tabular silver chloride grains comprising nucleating silver chloride particles, introducing alkali iodide solution into the dispersing medium containing the nucleated silver chloride particles, and introducing silver ion and chloride ion solutions into said dispersing medium, with the proviso that introduction of the alkali iodide is by multiple streams of said alkali iodide at a momentum range of up to 1.times.10.sup.+9 g cm/s.sup.2.
摘要翻译:本发明一般涉及一种形成片状氯化银粒子的方法,包括将氯化银颗粒成核,将碱金属碘化物溶液引入含有有核氯化银颗粒的分散介质中,并将银离子和氯离子溶液引入所述分散介质中,条件是 碱性碘化物的引入是通过多种流动的所述碱金属碘化物以高达1×10 + 9g cm / s 2的动量范围。
摘要:
The present invention is a method for cleaning and preparing photographic manufacturing equipment surfaces. An aqueous solution of potassium iodide and ferric ethylenediamine tetraacetate is prepared. The solution is flushed over the surfaces of the photographic manufacturing equipment removing deposited silver halide and silver. A high purity water flush is then performed.
摘要:
A mixer for preparing silver halide grains for photographic use has upper and lower impellers housed in a draft tube. The bottom impeller has flat blades for micromixing silver and halide reactants introduced into the bottom of the draft tube. The upper impeller has pitched blades for macromixing the bulk fluid. The impellers are spaced apart at least the distance of their diameters so that the upper and lower impellers operate independently of one another so that micromixing is independent of macromixing. A flow disrupter structurally associated with the draft tube and positioned above the top impeller prevents vortexing of the fluid during mixing. Baffles may be provided in the draft tube to discourage vortexing.