干板照像具有操作快、成本低、对比效果好等特点。目前市售静电复印粉成本较高。我院试制成用中药代赭石加松香,煤灰加松香和代赭石加静电复印粉三种显影粉。经试用,不仅成本显著降低,而且效果良好。介绍如下:制造方法:把代赭石、松香和煤灰磨成粉末备用。代赭石显影粉是代赭石2份加松香一份;代赭 Dry plate camera with fast operation, low cost, good contrast and so on. Currently on the market high cost electrostatic copier powder. Our hospital trial made with the Chinese medicine on behalf of the ocher plus rosin, ash and rosin and ocher plus electrostatic copy powder three kinds of developer. After the trial, not only significantly reduce costs, and the effect is good. Described as follows: manufacturing methods: the generation of ocher, rosin and coal ash ground into powder spare. On behalf of the ocher developer is ocher 2 parts plus rosin; generation ocher