Embossing and overprinting mean the fact that one color patch is overprinted on another color block. However, when printing, pay special attention to the overprinting of black text on the color image. Do not hollow out the pattern under the black text. Otherwise, the black text will be exposed when the printing overprint is not on time. Introduction Imprinting and overprinting mean the fact that one color patch is overprinted on another color block. However, when printing, pay special attention to the overprinting of black text on the color image. Do not hollow out the pattern under the black text. Otherwise, the black text will be exposed when the printing overprint is not on time.
For example, the height of 16 P is 16 open, and the PS is used. The text is sent to the film center. The black word is not embossed, that is, the position of the black character is hollowed out on other color plates, which will result in overprinting. To be fair and white, the black text overprint in PS is to change the layer mode of the black text layer into a positive layer, so that the black text in other color versions is not hollow, and thus there will be no whiteness. The friend who has just entered the printing industry and likes to use PS design must pay attention to this issue. In addition, it is necessary to develop a good habit of PS to make base map, CD or AI typing. The printed text will not be burred.
A molding method embossing is to place a sheet between the upper and lower molds, and the thickness of the material is changed under the action of pressure, and the material outside the extrusion is stuffed in the mold cavity with the undulating fine lines, A recess, and a forming method for forming an undulating bulge and a pattern or pattern on the surface of the workpiece. For example, coins, medals, etc., which are currently used, are formed by pressing.
Most of the embossing work is carried out in a closed cavity to prevent the metal from being squeezed out of the die, and for larger embossed parts, it can be pressed using an open cavity.
When the workpiece is embossed and embossed, in order to make the workpiece quality and high precision, before the grave printing, the blank should be annealed first, and also subjected to pickling or shot peening, and the surface must be cleaned beforehand. Object. The precision after imprinting can generally reach ±0.1mm in the thickness direction and up to about 0.05mm.
The size of the imprinted blank can be determined by the principle of equal weight before and after imprinting. Also, when trimming is required after printing, the necessary trimming margin should be added.
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