抄録
HP-system, direct plate-making system which is cosisted of the ultra high speed plate of composite type FNH and the automatic processing system FHP, has been developed in 1980. Recentry, in parallel with making great progress in the original making system, users' needs to use the direct plate-making system are notably increasing, such as LASER direct out-put, the proofing system and the electronic full-page make-up system and so on. Based on above mentioned needs, we have improved the HP system in following points, 1) Improvement of the image sharpness, resolution and tone-reproduction, 2) Improvement of the spectral sensitivity suitable to Ar ion laser light, 3) Simplification and stablization of the processing, 4) Development of more compact type processor. Thus, we succeeded in putting this plate system in the markets (1) LASER direct plate-making system and (2) Projection direct plate-making system.
