Patent ID: 7275879

Claim:
A processing device of a photo-sensitive material, comprising: conveying means for conveying a photo-sensitive material; a slot die for applying a processing liquid to the photo-sensitive material conveyed by the conveying means; a reservoir tank of the processing liquid; supply means of the processing liquid for supplying a processing liquid in the reservoir tank of the processing liquid to the slot die; a support roll of the photo-sensitive material arranged at a position opposite to and spaced from a tip of the slot die; detection means for detecting a position of the photo-sensitive material; driving means for rotating the support roll of the photo-sensitive material which can rotate the support roll at least in the direction reverse to a conveying direction of the photo-sensitive material; and supply control means of the processing liquid for controlling the supply and stop of the processing liquid from the supply means of the processing liquid, the supply control means of the processing liquid being controlled so as to start supplying the processing liquid to the slot die before the photo-sensitive material is conveyed to the position of the slot die by receiving signals from the detection means of the photo-sensitive material.