Ronsein | High Quality CTP & PS Offset Printing Plates
Violet Photopolymer Plate
Violet photopolymer plate handled with traditional measures, no workshop adjustment needed.
Overview
A violet photopolymer plate handled with traditional measures and no workshop adjustment. Fast, clean imaging at 405/410 nm for newspaper and high-speed web workflows.
Request a quote for this plateKey features
Traditional handling, no workshop change
Processed with the same measures as conventional plates, so no workshop or workflow changes are needed.
Fast clean imaging at 405/410 nm
Violet-laser ablation gives fast, clean dots with low scumming for high-speed web and newspaper lines.
High resolution
Fine grains keep small highlight and shadow dots stable across the run for clean tone reproduction.
Good press stability
Maintains ink-water balance and dot shape through long runs, reducing makeready and waste.
Durable anodic-oxidized layer
The durable oxidized surface formed by anodizing the aluminum base resists corrosion and retouching medium, markedly extending plate run length.
Plate structure
Layer technology
Specifications
| Brand | Ronsein-VIO |
|---|---|
| Label | Ronsein label / no label / customer label |
| Gauge | 0.15 – 0.40 mm |
| Coating | Violet photopolymer |
| Spectral sensitivity | 405 – 410 nm |
| Exposure energy | 2 – 8 mJ/cm² (violet) |
| Resolution | 1% – 99% at 200 lpi |
| Ugra reading | 13-step scale / 3 steps clear |
| Run length | 150,000+ |
| Recommended developer | Violet plate developer |
|---|---|
| Protection gum | Violet protection gum |
| Developing temperature | 22 – 26 °C |
| Developing time | 20 – 30 s |
| Developer concentration | Powder : liquid = 1:6 (auto) / 1:7 (manual) |
| Safe light | Dark red / safe violet |
|---|---|
| Shelf life | 18 months (10 – 30 °C, 40 – 70% RH) |
| Package | 0.15 mm: 100 sheets/carton · 0.30 mm: 50 sheets/carton |
Applications
FAQ
What wavelength do violet CTP plates use?
Violet CTP plates image at 405 nm on violet diode platesetters (e.g. Agfa, Krause, screen violet engines), enabling fast, high-resolution exposure.
Are violet plates good for newspapers and fine screening?
Yes. Violet plates support high line counts and fast throughput, which is why they are popular in newspaper and high-resolution commercial printing.
How are violet plates processed and stored?
Process with a violet/UV plate developer at the recommended temperature and time, and store away from ambient violet/UV light to preserve the photosensitive layer.
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