| 摘要 |
PURPOSE:To provide extremely good printed matter without the trouble such as paper peeling and paper staining occurring in sticking by treating the surface of a plate by using an aq. soln. contg. a specific concn. of calcium salt prior to or simultaneously with post exposure. CONSTITUTION:The surface of the developed plate is treated by the aq. soln. contg. >=0.05wt% calcium salt and is subjected to post exposure in succession thereto or simultaneously therewith. The calcium salt to be used in this case may be either inorg. or org. salt and for example, calcium carbonate, calcium chloride, calcium nitrate, calcium lactate and calcium acetate are used. There are no particular limitations for the upper limit concn. thereof but if the concn. is considerably higher than the saturation concn., the problem such as workability and the staining of the resultant plate arises and therefore the concn. is usually preferably <=5%. |
