Positive PS Plate

PS plate is a kind of lithographic or letterpress plate coated with photosensitive film. It could be used for printing anytime.

Unique grain producing technique is applied to the manufacturing process to achieve the even distribution of the grain and the multi-grain layer structure. The multi-grain layer technique, developed by Fujifilm, allows different grains including big grain, medium grain and small grain to coexist on the plate. With different sizes of grains, the run length of the plate is extended, and unwanted dots seldom show up. The other technologies we adopted include:

1. Unique sealing process on the oxidized layer of thealuminum, thus the hydrophily of the non-image area is enhanced;
2. Advanced photosensitive technology, which gives high sensitivity, great reproduction of small dots, high resolution and long run length;
3. Leading rough surface air vacuum technique, which can pump out the air between the film and the PS plate faster, and thus the plate making process is simplified.

The positive PS plate is suitable for the printing of business card, newspaper, magazine, package, book, business form and stationery. The parameters of the plate and its developing process are as follows:

Specifications:
Type: positive PS plate
Coating color: green
Substrate material: electrochemicalgrained anodic-oxidation aluminium with hydrophilic coat.
Thickness: 0.15 ~ 0.30 mm
Spectral sensitivity: 380 ~ 420 nm
Exposure energy: 160 ~ 180 MJ/cm2
Resolution: 2% ~ 98% at 175 lpi
Run length: 100000
Safe light: yellow light
Shelf life: 24month (25℃ and 60% RH)

Developing:
Dilution ratio: 1:6~1:8
Developer temperature: 20~30C
Duration: 20~40s

Related Names
Offset Printing Plate | Flexographic Printing Plates | Lithographic Printing Supplies