Instructions of positive thermal CTPJ plate
Mingcai thermal CTPJ plate produced by our company features moderate photosensitive speed, compact and uniform grits, strong hydrophilcity, good network reducibility, high durability, etc.
I.Performance of positive thermal CTPJ plate
|
Test item |
Technical index |
|
Plate sensitivity |
100～130mj/cm2 |
|
Application field |
Commercial printing and package printing |
|
Plate thickness |
0.15～0.40mm |
|
Maximum plate width |
1145mm |
|
Spectral response range |
800～830nm |
|
Output resolution |
1-99% ／2540dpi |
|
Applicable screening mode |
Amplitude modulation/frequency modulation and hybrid screening/20 micron line |
| Durability (Versamark) |
3 (non-baked), Note: vary from exposure, development and printing conditions to others |
|
Shelf life |
12 months (under the recommended storage condition) |
|
Storage and transportation conditions |
The packaged articles should be stored at the temperature of 5~30℃ and relative humidity of 40~80%. |
II. The recommended use conditions (plate making conditions of others should be tested) of positive thermal CTPJ plate are as follows:
|
Plate making conditions |
Screen 8600 model |
Development conditions |
Special for CTPJ |
|
Laser energy
|
80～95 % |
Development temperature
|
23±1°C 25～30s 90～120mL／m2 60～100 mL／hr
|
|
Drum speed
|
800～900 rpm |
Notes:
(1) CTPX developing solution belongs to development working solution, which can be directly used;
(2) Each time the developing solution is replaced, the developing
machine should be completely cleaned, and the filter element should be
replaced at the same time;
III. Printability
Printing conditions (fountain solution)
Alcohol strength: ≤8%
pH value: 4.8~5.6
Conductivity: 800~1,300 µs/cm
Temperature: 8~12°C (with cooling facility)
IV. Baking conditions
Baking temperature: 240℃
Baking time: 8~10 minutes
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