An optical recording medium including a substrate and a photosensitive layer thereon, the photosensitive layer containing as its major ingredients, the combination of a polymeric binder resin and an indolinospirobenzothiopyran compound represented by the general formula (I):
where Ri, R2 and R3 are each a hydrogen atom, a halohen atom, an alkyl group containing from 1 to 5 carbon atoms, an alkoxy group containing from 1 to 5 carbon atoms, an alkoxymethyl group containing from 1 to 5 carbon atoms in the alkoxy group, a hydroxymethyl group or an alkylaminomethyl group containing 2 to 6 carbon atoms in the alkyl group. The optical recording medium has a colored image which is very stable against heat and visible light.
一种光学记录介质,包括基底和其上的感光层,感光层的主要成分是聚合物粘合剂
树脂和通式(I)代表的
吲哚啉螺苯并
噻喃化合物:
其中 Ri、R2 和 R3 各为氢原子、卤素原子、含 1 至 5 个碳原子的烷基、含 1 至 5 个碳原子的烷氧基、烷氧基中含 1 至 5 个碳原子的烷氧基甲基、羟甲基或烷基中含 2 至 6 个碳原子的烷基
氨基甲基。光学记录介质具有彩色图像,对热和可见光非常稳定。