| 摘要 |
PROBLEM TO BE SOLVED: To provided a developing device where scraping performance is not deteriorated by preventing rubber or resin scraped off from a photosensitive printing original plate from sticking on the bristles of a brush. SOLUTION: This device is provided with the brush as scraping means, a spray nozzle 2 and a jet nozzle 9 as a developer supplying means. The brush 1 has the bristles facing downward and is attached inclined, and the base of the brush 1 is connected to a device for vibrating the brush 1, and the brush 1 moves so as to rub the original plate 3 by driving a vibrating device. The spray nozzle 2 is attached so as to, penetrate from the rear surface of the brush 1 into the front surface thereof, so that developer is supplied between the original plate 3 and the brush 1, and the developer is supplied from a developer storage tank 5 to the spray nozzle 2 by a pump 6. The developer containing suspended matter such as foreign matter remaining from scraping or the like is recovered by a hopper, and is passed through a back filter 4 and is returned to the developer storage tank 5, and is supplied to the spray nozzle by the pump 6 again and is reused. |
