|Origin:||Made In China|
|Category:||Packaging , Printing & Paper / Printing Materials|
|Label:||offset printing plat , positive ps plate|
|Min. Order:||5000 pc|
Our ps plate’s exposure time is about 60 seconds;(3kw iodine gallium lamp,lamp distance:1.2 meters).The exposure time is measured under standard voltage,standard lamp-house\vacuumpump ait pressure over 0.08Mpa and use monolayerfilm.Because of the different exposure equipments and different film types the exposure time will be different in practice.Please get out the proper exposure time base on your own conditions.
If use 13 steps Gray Scale to measure the exposure time. The best exposure time of colour printing is the time when the gray scales’ second degree clean and the third degree slightly appear; The news paper printing’s best exposure time is the time when the gray scale’s third degree clean and the fourth degree slightly appear.Please keep the films and exposure equipment clean,and make sure that the vacuum air pressure is over 0.08Mpa.
Recommended printing workshop temperature 10—30°C
Humidity: below 65%
The carton should be placed away from the wall and the ground over 15cm.Please open the carton under yellow light.The rest plates should be kept airtightly in the original carton