subject: After the PS version of baked version of the color of common abnormalities and to resolve-PS version, roasted version - Printing Industry [print this page]
PS version by baking, the layout of the color photosensitive layer of some changes will occur. Normally, the plate in the 230 ~ 250 under constant temperature bake 5 ~ 8min, the photosensitive layer from the green to red brown, but if the plate burning, developing, baking temperature and baking Edition version of any part time control properly, will affect the quality of the baked version, to make layout color abnormalities.
Print Network HC PS version After baking, the layout of the color light-sensitive layer of some changes. Normally, the plate in the 230 ~ 250 under constant temperature bake 5 ~ 8min, the photosensitive layer from the green to red brown, but if the plate burning, developing, baking temperature and baking Edition version of any part time control properly, will affect the quality of the baked version, to make layout color abnormalities.
1, baked version of a blank part of the post-layout was light red
PS version by baking, the membrane surface of normal color is reddish brown, some blank pages for the version of the basic colors, if the layout of the blank portion light red, is because there are trace photosensitive layer caused by the baking of. If the baked version by the second time, after developing, the pink is gone, printing will not cause the dirty. If after the second blank page after developing some still on light red, then printing may cause the dirty, in which case wipe gently with a pumice powder, can reduce or eliminate the phenomenon on the dirty, hard to serious save, this version of be abandoned children. Trace the former light-sensitive layer is placed for PS version too long or coating when the temperature is too high, which leads to light-sensitive layer and the aluminum substrate of Al2O3 produced a result of oxidation, which generally does not cause the material micro-dirty, After baking and will not cause the dirty, the latter most of the deficiencies or develop due to lack of exposure and are therefore also cause the dirty. So on to baking plates must pay attention to burn out of time and develop control.
2, baked version of photoreceptor layer after the page was dark brown or dark brown
Such a color, indicating high baking temperature or baking time too long, the light-sensitive layer of the resin part of the carbon, while the version of the base will deform, soften, weaken the mechanical strength of these will affect printed version of the anti-Indian rate, the deeper the color, the lower rate of resistance to India, the solution is to lower the baking temperature or reduce the grilled version version time.
3, baked version of photosensitive layer after the page was dark green
Baked version of this after the photoreceptor layer was color, indicating the temperature is too low, or bake baked version version too short, light-sensitive layer of the resin was not completely cured, did not achieve the purpose of grilled version, the low rate of resistance to India. In such cases, can immediately re-placed Baked version machine , The extension of time or increase the temperature of the second baking, so bake version of the color to red brown up.
