Optical data store comprising an axially substituted cobalt phthalocyanine in the light-writeable information layer
申请人:——
公开号:US20020172793A1
公开(公告)日:2002-11-21
Optical data carrier comprising a preferably transparent substrate which may, if desired, have previously been coated with one or more reflection layers and to whose surface a light-writeable information layer, if desired one or more reflection layers and if desired a protective layer or a further substrate or a covering layer have been applied, which can be written on and read by means of infrared light, preferably laser light, particularly preferably light having a wavelength in the range 750-800 nm, in particular 770-790 nm, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that at least one cobalt(III) phthalocyanine in which the Co metal centre bears two axial substituents R
1
and R
2
which represent, independently of one another, CN, SCN, alkoxy or alkylthio is used as light-absorbent compound.
光学数据载体,包括一个最好是透明的基底,如果需要,该基底可以事先涂有一层或多层反射层,其表面涂有可光写的信息层,如果需要,还可以涂有一层或多层反射层,如果需要,还可以涂有保护层或另一层基底或覆盖层、信息层包括光吸收化合物,如果需要,还包括粘合剂,其特征在于至少有一种酞菁钴(III),其中的钴金属中心带有两个轴向取代基 R
1
和 R
2
分别代表 CN、SCN、烷氧基或烷基硫代)的酞菁作为光吸收化合物。