The main characteristic of the slitter is that the magnetic powder clutch is installed as a resistance, and is controlled by the system to output a DC voltage to control the resistance generated by the magnetic powder clutch. The main advantage is that it is passively mounted and can control small tensions.
The slitter is a mechanical device that cuts wide sheets of paper or film into a plurality of narrow-width materials, and is commonly used in papermaking machinery and printing and packaging machinery.

Before the press, some of the plans were now digitalized, and the planning is now inseparable from computers and networks. For post-press digitization, today's primary body is now indentation and die-cutting. This skill is primarily used for post-press processing of individualized packaging, book publishing and small batches of non-standard packaging.
In the whole process of printing, we call the skills of planning and plate making prepress, the printing is called the main printing, the indentation, folding, die cutting, etc. are called postpress, and can be printed from prepress, main printing and printing. After the segmentation to pay attention to the development trend of digital printing.

1. Simple and convenient operation: no need for plate making and repeated coloring process, easy to operate and easy to maintain;
2. Fast printing speed: low input cost, high-speed printing is suitable for industrial mass production;
3. Overcoming the boundaries of materials: It can print any medium within the specified thickness, completely overcomes the traditional printing method that can only use special paper and special specifications. It can use very thin or very thick objects, the thickness can reach: 0.1mm~ 175mm
4. Meet a variety of shapes: flat, curved and round;
5. Height adjustment and batch setting: The lithography can adjust the height according to the printed objects, and adopts the horizontal moving vertical spray structure, which can conveniently and freely use various raw materials. It can be automatically raised and lowered to the appropriate print height after easy placement. And you can set the automatic feeding time for batch production at will, eliminating the need to repeat the operation of the computer.
6. Not affected by the material of the object: soft and hard materials such as metal (plastic, plastic, stone, leather, wood, glass, crystal, acrylic, coated paper, wallet, purse, trademark, plaque, etc.) can be used in rich colors. True color graphic printing of images on the surface of the object. Since the nozzle is non-contact with the surface of the medium during printing, it does not deform due to heat and pressure, so it can also be printed on raw materials (such as leather and textiles) that are easily deformed and soft.
7. High-precision perfect printing: The lithographic printing uses the special ink produced by the company to make the output image realistic and achieve photo quality. The image is waterproof, sun-proof, wear-resistant and never fades;
8. Printing format: The lithographic printing machine can meet the individual printing of each sheet of super-A3 (480mm*330mm), A2 (420mm*640mm), A1 (610mm*1800mm) and A0 (1118mm*2000mm);
9. Rough surface and bevel printing: It can overcome the thickness deviation of raw materials up to 5mm. According to the characteristics of the surface of the printed object, the unevenness can be expanded up to 5mm and can display perfect printing effect.
10. Continuous ink supply system: easy to add ink while minimizing printing costs;
11.Using special waterproof ink: clear and perfect printing quality, clear layers, all visible color blocks, no color cast, color mixing phenomenon, waterproof, wear-resistant, quality non-thermal transfer, silk screen and other traditional processes comparable;
12. Ultra-low printing cost: The lithographic printing machine can save more than 80% of the cost compared with the existing thermal transfer process;
13. Personalized printing: At the same time, it is very suitable for T-shirts, pillows (sets), shopping bags, aprons, gloves, cotton socks, handkerchiefs and other personalized color printing services.

Automation and dataization are the development direction of self-adhesive printing equipment in the future. Microcomputers and sensing technologies applied to multi-color offset printing presses will be widely used in self-adhesive printing equipment to achieve the monitoring of the amount of ink. Multi-color printing scanning alignment, automatic paper roll control, signal bar data quality monitoring, printed graphic dynamic monitoring system and dynamic density meter. Advanced technology will also be applied to label printers.

Classification of printing presses: First, according to the type of printing plates, according to the type of printing plates used, it can be divided into three types of printing machines: letterpress, lithographic and gravure. Letterpress printing machine: The printing plate used by the letterpress printing machine has a convex portion of the graphic portion, and a blank portion (not a graphic portion) is recessed, such as a movable type, a lead type, a copper-zinc plate, and a resin plate. Any printing press that uses a letterpress can be collectively referred to as a letterpress printer. Again, lithographic presses, lithographic presses use a plate that has almost the same graphic and blank portions, such as lithograph, flat intaglio, multi-layer metal and pre-coated sensitized plates (ie, PS plates that are now heavily used) Wait. Printers that use such plates can be referred to as lithographic presses. Finally, in gravure presses, the printing plate used in gravure printing is exactly opposite to the relief, and its graphic portion is recessed, lower than the blank portion, such as etched etched gravure or engraved gravure. All printing presses using gravure can be collectively referred to as gravure printing machines.