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一、利用加成反应减薄1.用定性滤纸覆盖在需要减薄的印泥指纹印章上,用滴管滴上2-3滴99.5%的乙醇或丙酮溶液。2.用手轻轻按压滤纸,使溶液能和印泥充分接触,注意按压时不要使滤纸滑动。3.揭开滤纸,便有一部分被溶解的蓖麻油及颜料粘附在滤纸上,从而起到减薄的作用。4.如果一次达不到理想的效果,可反复使用,直到满意为止。5.如果指纹、印章遗留的时间较长或客体粗糙(如牛皮纸等),可适当加大乙醇或丙酮剂量。
First, the use of additive reaction thinning 1. Qualitative filter paper covered in the need to thin the ink fingerprint seal, with a dropper drop 2-3 drops of 99.5% ethanol or acetone solution. 2. Gently press the filter paper by hand, the solution can fully contact with the ink, pay attention not to slide the filter paper. 3. Uncover the filter paper, there is a part of the dissolved castor oil and pigments attached to the filter paper, which play a role in thinning. 4. If you can not achieve the desired effect at a time, you can use it repeatedly until it is satisfied. 5. If fingerprints, stamps left a long time or object rough (such as kraft paper, etc.), may be appropriate to increase the dose of ethanol or acetone.