Color tone screen production and printing
We are a big printing company in Shenzhen China . We offer all book publications, hardcover book printing, papercover book printing, hardcover notebook, sprial book printing, saddle stiching book printing, booklet printing,packaging box, calendars, all kinds of PVC, product brochures, notes, Children's book, stickers, all kinds of special paper color printing products, game cardand so on.
For more information please visit
http://www.joyful-printing.com. ENG only
http://www.joyful-printing.net
http://www.joyful-printing.org
email: info@joyful-printing.net
Use special yellow mesh or non-exposed wire mesh; make color tone screen printing screen, you must handle small dots carefully. You must have a fine mesh on the screen. It is best to choose direct sensitization. The coating should be uniform and smooth. Otherwise, the transfer to the substrate will become larger and the image will be blurred. For the color tone screen printing net, it is very difficult to make a flat and even and beautiful screen. It must be carefully applied, coated with a nine-point test method, and used high-quality direct emulsion to achieve color tone. Printing requirements.
1, the light source
Exposure According to the manual or the usual operating experience, the correct exposure time is used. The correct exposure is very important for color tone printing. Excessive or insufficient exposure will affect the dot and affect the quality and color of the printed image. Exposure has a lot to do with the light source. In order to make the light source consistent, it is best to change the new light source.
2, printing
Moire lines often appear in the printing process; when you overprint, you need to carry out overprinting between screens. When the screens of different colors are overprinted together, the moiré will inevitably appear. Moreover, the generation of moiré and the color separation of the film also have Great relationship. To ensure that the color and the next color change in printing, as a person with screen printing experience, I know the angle of the four-color overprinted film. Here I recommend black for 90°, red for 45°, and blue for 75. °, yellow is 35°. Although there is a correct color tone of the screen angle, it is also necessary to pay attention to the angle of the screen; color tone printing, it is best to use a non-deformed aluminum frame to pull the net, in order to make the printing does not produce the turtle line is best to pull the inclined net.