The type of line and their respective use

1, cross or D line

Multi-color printing is usually based on whether or not this crosshair is registered. For two or more printing plates that require registration, crosshairs are the most important and indispensable. The school edition needs at least two crosshairs. Generally, multiple crosses are set according to the layout size and registration requirements. line. If there are only two crosshairs, they are usually placed in the middle relative to the left and right sides of the paper. Other more crosshairs serve as a reference for calibration. When the width of the paper is very tight, you can use the D-line, so that the vertical edge of the D-line close to the graphic part. A more cost-effective method is to place the crosshairs on the finished product, but it must be placed in a position that is not likely to be visible after the finished product has been molded.

2, the corner line:

The corner line, also called the inner corner line, is located at the outer corners of the finished pattern on the printing plate plus the bleeding. It is used as the basis for determining the position of the pattern on the paper when the first color is calibrated. Generally, the four corners must be printed during the calibration. Lines can be printed out. In the case of a particularly tense paper sheet, the corners may not be provided, but the position of the tangent or tangent line must be on the paper. Otherwise, it will be scrapped if the size of the print product does not meet the requirements.

3, in the single-plate, the tangent line is located in the four corners of the plate, inside the corner line. The edge of the finished product is facing outward. Some hard-to-finish plates also have tangents at the boundaries of the imposition. The role of the tangent is to specify the position for the cut. After cutting, both the corner and tangent lines are cut.