专利名称：Cassette and cassette storage case发明人：Shimokuni, Kenji, c/o Intellectual Prop.
Division,Ogisu, Kenji, c/o Intellectual Prop.Division
申请号：EP93306336.4申请日：19930811公开号：EP0583939B1公开日：19981111
摘要：A write area (10) is formed as a writable area on a recording medium
accommodating cassette by a printing process using a printing ink containing a properamount of protein powder made of natural collagen as a main component. In the writearea (10), owing to hydrophilic group of the protein powder, even when something iswritten therein with a water base pen, its ink can be prevented from being floatedtherefrom and hence the writing can be carried out satisfactorily.
申请人：SONY CORP
地址：JP
国籍：JP
代理机构：Harris, Ian Richard
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