Silver master plate recovery solution

Details Silver master plate recovery solution Silver master plate recovery solution

B - Operations, Transporting

41

N

31/1, 96/2

B41N 3/08 (2006.01) G03F 7/06 (2006.01)

Patent

CA 1327696

ABSTRACT OF THE DISCLOSURE A silver master plate recovery solution for a silver salt photographic plate for offset printing is disclosed which comprises (a) a hydrazine component for reducing the silver oxide layer of an image area. (b) a quaternary ammonium salt cationic activator and (c) water. The mixing ratio of the quaternary ammonium salt cationic activator is 3.0 to 20.0 wt% on the basis of the hydrazine component. The silver master plate recovery solution reduces the silver oxide layer of the image area of a silver salt photographic plate which has passed the stock time, thereby recovering the ink receptivity of the image area.

601936

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