Two-color printing machine principle: two-color ink printing machine operating procedures
Abstract: Two-color printing design, simply put, refers to the process of reproducing the effect of a particular image through color separation processing technology, using a combination of two different colors of ink to reproduce the original. In general, C, M, Y, K four-color printing plate, black (K) plate and any combination of the other three colors (C, M, Y) plate, due to the black plate in the dark tone at the image order information distribution is stronger, to enhance the contrast of the image tone. Here, to understand the principle of two-color printing machine, two-color ink printing machine operating procedures. Two-color printing machine】Two-color printing machine principle two-color ink printing machine operating procedures two-color printing machine principle two-color printing, that is
The common two-color printing is usually "black + red" or "black + blue". Simply put, is the CMYK four-color printing in which two colors are extracted, because the yellow alone when the limited recognition is not conducive to reading, so there is no "black + yellow" combination.
But the red and blue printing alone out of the color is quite a bit harsh, giving people a feeling of less upscale. As the cost of spot-color printing is reduced, two-color printing has also introduced this treatment, you can use their own required spot-color ink with black, so that the color becomes rich. A book we are currently working on uses the "black + imitation gold" treatment, and the layout is unified with the cover.
In fact, the definition of two-color printing simply as "black + spot color" is also incorrect. As long as the two inks mixed printing can be called two-color printing. This means that we can use two spot colors together. This is often used in many experimental image processing. It's like the "two-color ice cream" that we all ate as children, where two different flavors (colors) are mixed together to create a variety of possibilities.
1, the operator must be trained and qualified, skilled in the performance of equipment and operating skills of the personnel on the job, without training is prohibited to operate the equipment, alcohol is strictly prohibited on the job.
2、Wear good work clothes and caps before starting the machine, must check whether all parts of the equipment is normal, electrical switches and safety devices are sensitive and reliable, and to the lubrication parts of the oil.
3、Before starting the machine, you must check and clean up the paper feeding surface of the equipment, between the rolls, especially between the anilox rolls and the rubber rolls to see if there are any waste paper edges or foreign objects, and check if there are any tools and other items above the equipment so that they will not fall into the equipment and damage the equipment when starting the machine.
4、When the machine starts to operate, only one person is allowed to operate, and observe whether there is any person doing other work on the equipment, during the operation of the machine, the personnel must concentrate, and it is strictly prohibited to do things not related to work.
5、After the machine is turned on, if something unexpected happens or there is an abnormal sound, it must be stopped immediately to check and troubleshoot before starting production.
6, during the operation of the equipment is prohibited to reach into the transmission parts to do the adjustment action, if you need to adjust must be stopped, the production process is strictly prohibited to stand above the machine to adjust the equipment.
7、When adjusting the knife seat and roller line die seat, it is strictly prohibited to use metal instruments to knock, and the roller knife shaft should be wiped with gasoline frequently to keep it clean and shiny for easy adjustment.
8、When changing color printing, you must use the diaphragm pump to clean the water into the middle of the rotating rubber rollers and anilox rollers, and clean all the ink cartridges and ink tubes before changing color production.
9, ink printing machine in the process of operation, adjustment is strictly prohibited to avoid hand injury, the equipment in operation in an emergency, you can press the emergency stop button brake.
10, the machine in the repair and adjustment, fuel maintenance and cleaning, must be in a stop state, while cutting off the power supply, before replacing the electrical components, must cut off the main power switch.
11、Before stopping the machine at the end of each day, the ink in the diaphragm pump body must be put clean, wash and clean the anilox and rubber rollers with water, and then loosen the two rollers with a certain gap, so as not to squeeze the two rollers for a long time, so that the rubber roller deformation affects the use of the printing plate is not allowed to be parked directly below the anilox roller, so as not to press the printing plate bad.
12、It is strictly forbidden to damage the safety guards of the equipment, the switch must be closed to the stop position at the end of the day, shut down the gate and power off, and clean up all parts of the equipment, so that the work is done and the material is clean.