Cutting is also an important aspect of post-processing of digital printing. The first is the cutting of paper. Like traditional printing, digital printing also uses a paper cutter to cut the paper or finished product into the required size and shape. At present there are various paper cutters on the market, both manual and computer-controlled full-automatic types. The cutting specifications of single-sided knife cutters are mostly in the range of 52-150cm. Generally speaking, a paper cutting machine with a cutting width of 78cm is more suitable for digital printing. If possible, a computer-controlled paper cutting machine can better cooperate with digital printing because it can store a certain amount of data.
        In this way, if you cut a job that has been processed, you only need to call up the original program from the computer, which can fully save the time of tuning. In the use of the paper cutter, in order to protect the sharpness of the blade and extend the life of the paper cutter, the thickness of the paper to be cut at a time should not exceed 40mm, and the pressure of the paper cutter on the paper should be appropriate. Generally, soft paper The required pressure is higher, and the harder materials require relatively less pressure.
        It is critical to maintain the sharpness of the blade when using a computer cutter. Pay attention to the proper maintenance and use of the blade. Once the blade is blunt, the blade should be reground, otherwise it will affect the cutting accuracy. In addition, care must be taken to keep the ambient temperature at 19 to 23 ° C and the relative humidity at 50%. Under such conditions, the characteristics of the paper are relatively stable, which is conducive to the correct use and maintenance of the cutter, because the determination of many cutting parameters depends on the paper being processed.

Paper cutter greatly simplifies our work, but it also carries certain dangers. It is best to follow the procedures.
1. The paper cutter must be kept and used by full-time personnel. Without approval, non-native personnel are not allowed to operate without permission.
2. At work, you must first dress neatly and wipe the paper-cutting table according to the production safety requirements. Make sure that the table is ash-free, oil-free, and the paper is white and flawless.
3. Before turning on the paper cutter every day, the photoelectric safety device must be checked once. Only when it is confirmed that it is reliable, can it be put into formal production.
4. Paper cutting is not allowed to place steel rulers, manual labor, bolts, gaskets and other metal products to avoid major crashes.
5. In order to ensure the cutting quality, the blade should be changed frequently. The blade holder should be replaced with a special blade holder to prevent injury to the blade. When the blade is replaced, the machine should be powered off.
6. The blade to be sharpened must be clamped and fixed by a proprietary wooden board, and the knife edge should not be exposed around the clamp to avoid falling and hurting people.
7. Every day after work, the paper cutting table should be wiped clean, and then waxed or painted with anti-rust paint.
8. In case of computer or electrical failure, non-professionals shall not inspect or repair without permission.
9. Keep the machine well lubricated. Before going to work, check the oil level of the lubricating pump. Press the handle of the oil pump a few times with your hand, and grease the lubrication points once a week.
10. After work is completed, turn off the main power of the machine before leaving.
11. It is strictly forbidden to drink or take illegal drugs to work.

         Program-controlled paper cutting machine is one of the necessary equipment of printing plants, and its role is to process paper cutting before and after printing. With the development of science and technology, the function of the paper cutter is more and more, the operation is more and more simple, the labor intensity is reduced, the cutting accuracy is very high, and it is safer. In the process of use, the following problems often occur. Below, taking the digital display paper cutter as an example, a simple analysis of the reasons why the digital display paper cutter's safety screw is easy to break.
         1. The cutting edge of the blade is not sharp enough.
         2. The sliders on the left and right sides of the knife seat are worn.
         3. Do not tighten the safety screw often.
         4. The mounting direction of the safety screw is wrong.
         5. The two end faces connecting the safety screw are not flat because of deformation.
         6. The blade cuts too deep into the blade or the blade is not flat.
         In addition to the above reasons, there are also electrical reasons. In case of failure, it should be resolved in time to avoid delaying normal production work.

         In the paper industry, a paper cutter is a device that can cut paper into flat paper. As a traditional product, paper cutter is one of the most important equipments for printing, papermaking and other industries. According to the different cutting knives, it can be divided into throw-knife cutter and flat-knife cutter. According to different control methods, it is divided into full-automatic paper cutter, program-controlled paper cutter, digital display paper cutter and so on. Different paper cutters have different uses, and the price of paper cutters also varies.
         In the cutting process with a paper cutter, the choice of the angle of the cutting edge of the cutting knife is very important. A good paper cutter needs a good blade and knife grinding process. Many users often ignore the problem of the blade during the use of the cutter. If the way, method and angle of sharpening of the cutting blade are not correct, the impact during cutting will increase, causing the safety screw to loosen or even break, eventually causing acute damage.

        For printers, a paper cutter is a necessary machine. The paper cutter is used to cut the paper before and after printing. The paper cutter is easy to operate and has no special requirements on the environment. As long as the power is supplied, it can work normally. After the paper cutter is used for a long time, there will be some problems, such as the paper cutter does not move, abnormal noise, and the pusher does not move. Some users reported to us that the newly installed paper cutter cut a knife, and the blade had a problem of chipping.
        Below, I will give you a brief analysis of the cause of the paper cutter's cutting edge?
        The selection of the blade sharpening angle, the quality of the sharpening, and the sharpening clearance time of the blade affect the flatness and smoothness of the cutting edge of the paper. Generally, the angle of the blade is 19 °. If the cut paper is hard, you need to To increase the angle of the blade, if you want to improve the sharpening quality of the blade, make sure that the coolant is sufficient during the sharpening to avoid the edge annealing. Before cutting, you can first polish the blade with a fine stone and apply soap and paraffin on the blade This can not only improve the sharpness and smoothness of the cutting edge, but also extend the service life of the cutting edge, and the quality of the finished product is better.
        The reason for the chipping in actual operation is that the operator shortens the sharpening time, and the coolant is insufficient, which causes the edge to anneal and the width to be narrowed. The nut must be adjusted during installation to make the blade cut into the pad Blades, if the nut is not adjusted properly, and the cut is too deep, it will cause chipping.