Cliche photopolymer water-washable TOYOBO KM-43GS

 
 

Plates TOYOBO KM-43GS-material for self-production of clichés for pad printing. The plates are made of a solid photopolymer layer on a steel substrate. The light-sensitive part is a modern, fast-exposed photopolymer layer of universal purpose, which has exceptional exhibiting qualities, sharp edges and high resolution. The light-sensitive layer is protected by self-adhesive paper.

All operations of preparation for exposure, exposure and development can be carried out under yellow safe light (ordinary incandescent light bulb), avoiding direct sunlight and rays of powerful light sources.

Technical characteristics of TOYOBO KM-43GS plates

  • plate thickness: 43 microns;
  • photopolymer layer;
  • etching depth: up to 36 microns, variable;
  • polymer layer: light-proof;
  • to develop: water at room temperature;
  • clarity of reproduction of the smallest details of the image-0.1 mm;
  • printability: small / medium print runs;
  • size of plates: any according to the customer.

To work you will need:

  • the original layout with a positive mirror image (film with FNA or laser printer);
  • exposure chamber (preferably with vacuum clamp);
  • raster film;
  • water.

Layout preparation and film output

The layout is prepared on a computer in graphics programs for working with vector graphics (Corel Draw, Adobe Illustrator, etc.). the Film can be displayed on any photo-set machine or on a high-quality laser printer on a special film type KIMOTO. The image must be mirror and positive.

Exhibit

The plates are exposed by contact method in an exhibiting chamber with UV lamps with a maximum spectral characteristic in the region of 370 – 420 nm. For best results, use a chamber with vacuum or mechanical pressure.

Order of exposure:

  • place the original layout on the glass of the camera with the readable side to the UV light source;
  • remove the protective film from the surface of the plate;
  • place the plate on a film with a light-sensitive layout layer to the original layout and the source of ultraviolet lighting;

  • close the cover of the device and turn on the vacuum;
  • to make the exposure. The exposure time for the vacuum chamber is 120 seconds (approximate exposure time is given and may differ from the actual exposure time).);
  • urn off the vacuum clamp, get the plate and the original layout.

Rasterization

To achieve optimal results after the exposure of the plate, it is necessary to carry out its rasterization. The plates are rasterized in a completely similar way, as well as the exposure, instead of the original layout using raster film. The scanning should be carried out directly after exposure. For printing thin lines, logos or line drawings, it is recommended to use raster film (120 lpi), for printing dies and large areas – film (80 lpi). The exposure time of the raster for a vacuum-press camera is 90 seconds (approximate exposure time given and may differ from the actual exposure time).

Film development

Immediately after the rasterization, the plate must be developed (washed). Water is used for the development of exposed plates.

The order of development:

  • place the plate in a plastic or glass bath for 30 seconds. so that the water completely covers the surface of the plate;

  • to wash out the image under running water for 30 seconds., visually checking the quality of washing. Sometimes you may need a loose fur. Impact with a soft brush (a very thin elements);
  • dry the plate (e.g., compressed air);
  • if you do not use a drying chamber, then in order to increase the run resistance, the plate is fixed with additional exposure. To do this, place a dry plate in the exposure chamber washed image to the light source. At this stage, there should be no film between the plate and the glass;
  • to produce additional exposure within 15 minutes;
  • get the cliché and kill it with hot air for 30 minutes at 80 °C;
  • clichés do not require additional processing.

Recommendations for obtaining high-quality images on the cliché.

  • Monitor the quality of the original layout. Use to manufacture printing film type or film KIMOTO displayed by FNA.
  • Monitor the cleanliness of the glass surface of the camera. Regularly and gently wipe the glass. Dust, finger marks and other impurities are the cause of poor image quality.
  • Not to touch the fingers to the plate in the process of making a cliche in the field that reflects the image.
  • Chosen to withstand exposure time for each stage.
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