The installation of the plate should be in accordance with the specifications of the cylinder and lined with appropriate backing paper. However, it is necessary for an entry-level technician to correct and quickly correct the printing plate gauge line of printing in China.
 Today, thanks to printing technology, after the successful development of the cross gauge line drilling device, a set of printing plates in the past had to take more than 10 minutes to complete under the adjustment of skilled printing technicians, but now it has been greatly shortened. The principle of its invention is to integrate the proofreading technology which was previously regarded as the teacher's father's introduction, that is, the four-color cross gauge line proofreading work in offset printing in China
From the narrow space on the plate holder of the printing machine, it is moved outward to a platform punch. After the hole is punched, the plate needs to be installed with the plate holder of the printing machine, and the remote control positioning device of the printing machine is used to make minor adjustments. It is very simple to calibrate the plate. However, due to the development of labor-saving equipment, some traditional techniques are gradually ignored by the new generation of printing technicians, Although it is a little different from printing technology, the principle of cylinder design and proofreading technology are intriguing. In the past, in addition to the sharp color discrimination ability, the printing master also had to be clever. However, the clever hands and feet can be known by the speed of proofreading, so this technology naturally becomes the master's eating skill, and also an important subject for apprentices to learn before they start. Let's discuss the principle of this proofreading technology in offset printing in China!
First of all, it is necessary to know the thread number of screw of plate clamp, i.e. pitch. Generally, if 17 or 19 wrench is used as calibration tool, most of the screws are 0.75m/m, 1.0m/m The screw pitch is 1.25m/m or 1.5m/m, but depending on the design of the printing machine manufacturing company, the master of printing does not turn the calibration screw randomly when correcting the plate. The master only adjusts the screw according to his feeling, but how to grasp it accurately. After you read this report, you will be an entry-level master (I didn't want to learn anything before, but master was afraid of being learned) Take a rag to cover it up) for example, for the screw tooth of No.17 spanner of 0.75m/m, the displacement of 0.75m/m is generated by one rev of screw, and the one take is 0.125m/m; when two Rev = 12 angles (12 take), the plate is displaced 1.5m/m understand this design principle, pay attention to the parallel principle of printing plate (pull bite three take, remember the relative top to side drag tip three take the same reason, otherwise the reverse) as long as you know the basis of four operations, each set of plate gauge position correction through the brain calculation, fast and accurate, then the plate proofreading technology of offset printing in China is no longer a unique skill after rags.
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