Study of dye-sensitized systems for photoimaging

o-Chloro-hexaarylbiimidazole (o-CI-HABI) can be sensitized efficiently by c yanine dyes, the cyclopentanone and cyclohexanone dyes, when exposed to xen on lamp (use filter cut lambda less than or equal to 400 nm). The photoreac tion between the photoinitiator and the dyes was completed through an elect ron transfer process. Excellent results have been obtained in photoimaging studies, e.g. the resolution of the image can reach 7 mum. The influence of the content of the dyes and the heat after the exposure on the resolution of the image was investigated.