Original and printing preparation

1. Original preparation and inspection

According to the production order and process design sheet, a thorough inspection is performed on the originals to be dried, whether the contents of pictures, graphics, text, shading, etc. in the layout are complete, whether the number of color plates is complete, and whether the empty plates of each color version are accurate or not. Whether the orientation of the picture is correct, and whether the paste is firm, the adhesive tape should be more than 7mm away from the figure, otherwise it will affect the actuality of the print version.

The affiliated contents of the layout, such as printing overlays, corner lines, center lines, and cutting lines, as well as color labels, control strips, etc., are completely pasted and accurate. Masking masks that need to be exposed in multiple exposures, the layout and positioning of the set of paper layouts and layouts for layouts, and layout layouts for repeated distributions of continuous prints should all be checked.

Then check whether the original graphics are clean, whether the darkness and solidity of the outlets and graphics meet the printing requirements. For inferior quality originals used as a last resort, data should be adjusted and remedied according to the actual conditions and density of their outlets.

2. The preparation of printing plate clear production instructions and process design arrangements, decided to take a single figure printing version, make-up printing plate, set of plans to print or even print version of the printing version. According to the design requirements for printing, cutting, and binding, the layout, order, and number of layouts are determined.

When a single image is printed, a cover mask (also known as a falling mask) that is positioned with the image is used by the imposition or copywriter to prepare for the positioning of the secondary exposure after (or before) the image is printed. Unwanted smudges outside the picture are clean.

When it is necessary to artificially double (or multi-joint) the original version of the picture, it is necessary to make a light-proof combination of the exposed crosshairs according to the layout, so that the crosshairs will be sun-dried before the printing, and the single-image version will be successively Spell sun. Prepare a light-shielding material to protect the unexposed areas from shading.

When copying a plan and printing, the copying process is basically the same as the nesting process. According to the nested layout, generally, the imposition person creates a set of map sheets for positioning with pictures, and positions the sheet, and also creates a masking mask for the outside stains of the exposure chart. Version.

When using a continuous dryer for continuous printing, calculate the layout number, form position, and spacing of the graphic layout according to the printing layout, and the vertical and horizontal moving sequence of the picture and the moving size. According to the format, the original shading frame is produced or the shading red tape is pasted outside the original drawing, and the original version is collaged on the printing rack according to the exact position. And to create a mask covering the entire layout of the sun.

According to production instructions, the plate, plate size, and port size are determined. Positioning and punching (preferably using a unified positioning system for imposition, printing, and printing). According to the requirements of the original and the printing layout, the original layout is arranged in a well-designed manner. The applicant must be shaded and ready to return light. Everything is ready to start the printing operation.

Source: Chinese Printing Community