1). Three requirements for producing printing tape
1, mainly offset printing technology, printing copperplate paper is not less than 250g/m2;
2, pure printing ink, high temperature, fast drying;
3, the number of screens is not less than 300 lines / inch or use the Philippine version of the production.
2). Three elements of three-dimensional printing
1. Unified production data: The manuscript, pixel data, and printed image are always consistent with the pitch of the lenticular grating, so as to avoid interference fringes in the finished image due to the difference of data and affect the visual effect.
2. Overprint accuracy: The error between pixel and raster should not exceed 0.0001 inch. Because of any deviation of the color plate, when the grating is compounded, an illusion of a different color image is generated, so that the entire picture color and the image are divorced and cannot be viewed.
3, rich levels: printing outlets clear, full, dense and not paste, sparse and not lost. If the outlets get out of control, it will result in a polarization of the density and affect the ideal reproduction of the three-dimensional and spatial images.
4. Prohibition of telescopic: Strictly controlling the amount of stretch of printed matter is the key to ensuring perfect reproduction of stereoscopic images. The expansion and contraction of the printed image will deviate from the constraints of the grating pitch, resulting in a change in the visual positioning of the image, and the appearance of reverse images, erroneous images, and visual vertigo.
5, adjust the network cable angle: the three-dimensional printing with different color version cable angle difference should be smaller than ordinary offset printing, such as 300 lines / inch cable angle is K37.5 °C37 °, m20 °, Y22.3 °, the purpose is to make dot combination In the cylinder surface of the lenticular grating, color lines are arranged laterally to ensure the balanced transition of the color image layer, and the occurrence of a collision plate due to the equal angle between the screen line and the vertical grating stripe is avoided, and an abnormal moiré appears, which affects the smooth reproduction of the color stereoscopic image.