G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/30 (2006.01)
Patent
CA 2127108
The present invention is directed to a developer- circulating method and an apparatus for carrying out the method in making a flexographic printing plate which prevents dissolved chemical substances from adversely affecting human bodies and has excellent safety; is capable of preventing an increase of the developer viscosity; and is capable of effectively preventing the dissolved chemical substance from adhering to the apparatus, thus preventing the life of the apparatus from being reduced and collecting the dissolved chemical substance in a short period of time and which is superior in operation efficiency, work efficiency, and treating efficiency. The solid content of the liquid containing resin component which has eluted from the flexographic printing plates and is dispersed in the developer is flocculated with a flocculating agent, and the liquid containing the flocculated solid content is separated into liquid and solid contents. The solid content is discharged and the liquid is re-utilized as a developer. A pH-adjustment may be performed in addition to the flocculation. The pH-adjustment may be carried out after the developer is separated into solid content and liquid, without performing the flocculating process.
Muramoto Hisaichi
Umeda Yasushi
Kirby Eades Gale Baker
Nippon Paint Co. Ltd.
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