Blue Offset CTCP Plate for Commercial Printing

CTcP (Computer To Conventional Plate) uses a UV light source (360–450 nm wavelength) to expose conventional PS plates directly, eliminating the need for film output. The DMD (Digital Micromirror Device) precisely controls the exposure of each pixel.

The blue coating is the photosensitive layer. After UV exposure, development removes the unexposed areas, forming oleophilic (ink-receptive) image areas and hydrophilic non-image areas.

Plate Structure Advantages

• Aluminum Base Treatment:
  Uses an electrolytic oxidation process to create a multi-layer composite grain structure (coarse/medium/fine grains), enhancing surface adhesion and water–ink balance.

• Photosensitive Layer Design:
  Dual-layer coating technology improves run length (doubling it for conventional inks) and supports UV ink printing.

• Environmental Characteristics:
  Uses standard PS plate developer. Discarded plates are recyclable, significantly reducing chemical pollution risks.

• Operating Environment:
  Supports daylight operation and a wide range of plate sizes.

Product Advantages of Blue CTCP Plates

1. Precise Imaging, Excellent Dot Reproduction
Blue CTCP plates feature uniform coating and linear photosensitivity, reliably reproducing high-resolution screens of 200 lpi or higher—ideal for high-quality commercial color printing.

2. Strong Compatibility
Processable in most standard plate processors without expensive proprietary chemicals. Compatible with a wide range of offset presses (single-color, two-color, four-color, eight-color, etc.).

3. High Run Length
Premium blue CTCP plates can achieve 50,000 to 100,000 impressions or more (depending on printing conditions and maintenance), meeting the needs of medium- to long-run commercial jobs.

4. Simplified Operation, Fewer Steps
Eliminates film, platemaking, and manual stripping. Direct laser imaging followed by development reduces platemaking time and saves labor and material costs.

5. Excellent Stability and Repeatability
Digital exposure reduces human error in imposition. Batch platemaking is highly consistent, with easily managed parameters that support standardized production.

6. Environmentally Friendly
CTCP technology reduces film and chemical waste. Some blue CTCP plates are compatible with low-alkaline or eco-friendly developers, lowering waste liquid disposal pressure.

Application Value: Improved Efficiency, Lower Costs, and Environmental Compliance

The greatest advantage for printers adopting blue CTCP plates lies in streamlined workflows and higher efficiency.

Traditional platemaking involved multiple steps—layout, film output, plate exposure, and development—driving up material and labor costs while increasing chemical waste. By contrast, blue CTCP plates use a digital workflow:

• No film output or exposure frame needed

• Direct laser imaging

• Standard plate processors for development

This reduces platemaking steps, manual handling, and film waste, while improving consistency and repeatability.

Additionally, blue CTCP plates can be used with eco-friendly developers, with some products supporting low-alkaline or even processless options, further reducing chemical waste and meeting green printing requirements.

Applications of Blue CTCP Plates

• Book and Magazine Printing:

High demands for image quality and medium to long print runs.

• Brochures, Posters, and Flyers:

Requires sharp text and vivid colors.

• Packaging Printing:

Cartons, paper bags, etc., where durability and print accuracy are critical.

• Forms and Document Printing:

Needs precise registration and clear fine details.

• Newspaper Printing:

Requires fast platemaking and reliable run length.