| 摘要 |
<p>The redn. of the density of overexposed radiographic film having two emulsion sides by removing silver from one side of the film, is carried out by (a) placing a suitable barrier on one emulsion side of the film, (b) transporting the film into a reagent tank contg. hypochlorite soln., (c) maintaining the film in the soln. for a predetermined time and (d) collecting the pptd. Ag chloride, washing the treated film and drying and removing the barrier. Pref. the barrier is a plastic or elastomer adhesively attached to one emulsion side of the film or is a suitable protective material sprayed on one emulsion side. Appts. is also claimed.</p> |
