PURPOSE: To provide the novel caligraphic set which eliminates the possibility of staining hands, clothing and personal belongings, can be preserved over a long period of time, is easy and simple to use and is safely and expensively produced. ;CONSTITUTION: This caligraphic set consists of alcohol photosensitive paper having colorless or pale color developable compd. which are easily soluble in an aq. alcohol soln. and color developer in a base, the aq. alcohol soln. and writing brushes, etc. For example, crystal violet lacton, etc., are used as the color developable compds. and, for example, phenol compds., etc., such as bisphenol A, are used as the color developer. The concn. of the aq. alcohol soln. is preferably 31 to 39wt.%. Coloring agents may be incorporated into the aq. alcohol soln.;COPYRIGHT: (C)1993,JPO&Japio
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