Monochrome offset presses, as the name suggests, can only print one color at a time.
There is a certain difference between the selection of printing consumables for monochrome offset presses and multicolor offset presses. Multicolor offset presses usually have higher requirements for the selection of consumables, while monochrome is relatively casual.
In fact, the selection of printing consumables, from the perspective of cost, quality, cost-effectiveness, etc., should be more cautious. Here briefly talk about the selection of consumables for monochrome offset presses.
First of all, the only consumable that needs to be purchased frequently at Feida is the nozzle skin. There are roughly three thicknesses for the nozzle skin: thick, normal, and thin.
Generally speaking, these three thicknesses can adapt to all kinds of paper, even if the thinnest nozzle skin is used, the thickest paper is no problem. Of course, during the paper feeding process, there may be cases where the paper cannot be sucked. , Can be compensated by adjusting the height of the nozzle, and the amount of inhalation.
Personal recommendation: Ordinary nozzle skin, with a relatively wide range of adaptation. The price varies from 0.3 yuan to 1 yuan per piece.
The brush wheel and the thread belt on the cardboard table need to be selected according to the actual situation. The personal recommendation of the wool wheel is to choose a smaller one, because the deformation of the smaller wool wheel is relatively small, which makes the paper more stable. good.
The choice of ink is very important. Monochrome machine inks use more peony manufacturers. Peony is one of the most cost-effective inks, and its performance is also one of the most stable in inks. Old brands, big brands, trustworthy. Another reason is that there are relatively many suppliers of peony agents, fierce price competition, and limited profits. This is also one of the reasons why many printing companies have been following peony inks for many years. Some other inks are also recommended here: Tianjin Tiens, Shanghai Huaxing, Hangzhou Hanghua.
There are several types of ink auxiliary materials: ink additives, detackifiers, inks, etc.
Under normal circumstances, the use of ink-regulating oil is more common, and the price is cheaper. The price of debonding agent and ink additive is relatively expensive. In the last resort, the ink additive can be used to replace the debonding agent.
Wetting powder is more critical. Many printing masters believe that the more wetting powder, the better the printing effect, but it is not. The more the amount of wetting powder, the more easily the PS version will be burned out. Although the function of the wetting powder has a certain ability to prevent dirt, it is not omnipotent. Its main purpose is to make the water quality delicate and stabilize the surface tension of the water. Moisture will be messed up.
The revision paste, revision fluid and revision pen are selected according to different situations. It is recommended to choose revision paste in the printing room and revision pen on the machine.
There is a big difference between the price of the cleaning paste and the cleaning solution, and there is a way to save these two materials. When wiping the plate, we try to use a sponge instead of a cloth head. The sponge has a strong water absorption function. You can use a bucket and put appropriate water on the side of the machine. Soak the sponge that has been wiped off the plate every time. It ’s been a long time, and the cleaning paste left on the sponge has also been incorporated into the water. I have personally seen a printing factory, a machine that only uses two boxes of cleaning paste a month, and reuses the water in the bucket every day. Only when the water smells stinky after use, do you want to dump it.
Although this saves a lot of materials, it is still appropriate from a hygienic point of view.
The selection of the ps version depends on the specific situation. Some companies only need the regenerated version to complete the operation, while some companies do not need other than the Huaguang version. In the case of a large quantity, it is necessary to use a good plate, but the amount is small, only a few thousand sheets per batch, and the regenerated version is also a very good choice. After all, the printing quality requirements of monochrome printers are relatively low. I personally recommend a better use of blankets. For example, Dico in the United States and Vulcan in Italy are the best among the blankets. They can be used normally and can be replaced for a few months, which is quite cost-effective. Of course, it is not ruled out that some companies print thick paper all the year round, which is easy to crush the rubber cloth, and can only be wronged to use domestic rubber.
There are two kinds of reducing agents: one is cleaning reducing agent, the reducing effect is not very good, basically 10 yuan a bottle. One is a powerful recovery reducing agent, creamy, with good results, and the price is between 60 and 80. It mainly depends on the price of the blanket. Sometimes a bottle of strong reducing agent can be used to buy a new blanket.
There are also some auxiliary materials, which are recommended here: idling protection agent, decalcifier, anti-crust agent, car washing water, etc. The descaling agent is used to remove the crystal on the surface of the rubber roller, and the effect is good. Most of the dirt on the surface of the rubber roller can be effectively removed after use. If the crystal on the surface of the rubber roller is severe, it needs to be removed and wiped with toluene. The use of anti-crust agents can effectively save car wash water, which is not recommended. If the shutdown time exceeds 4 hours, it is recommended to wash the glue.
The choice of powder spraying depends on the printed matter. It needs to be thinner or coarser, depending on the amount of ink, paper thickness, and smoothness of the paper surface. If printing plate paper, it is necessary to choose environmental protection, non-toxic powder spraying.
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