Printing ink roller to do the important thing is to transfer ink, ink roller there are three types of situations: to the ink roller, uniform ink roller, ink roller, offset rubber commonly used surface layer of rubber generally use nitrile rubber. In addition to the need for a certain number of ink rollers, offset printing systems also require printing ink rollers to limit the contact and transfer of ink to the greatest extent; as the printing process requires continuous warping with water, ink, and paper, he pleads for ink rollers. When the minimum limit of the day the call is attached to moisture, and has excellent oil resistance and a set of acid resistance, corrosion resistance to solvents, with excellent ink absorption and ink transfer, cleaning convenience.
In the course of offset printing, whether or not Zhu Roller's usual support can be fair, there is no direct relationship between the life of the roller. Because the ink roller is caused by rubber material, it is easy to swell and deform when it is warm. If it is not used properly, it will appear signs such as dull film or aging cracks, affecting the general transmission of ink, and thus, being the same as ordinary printing operations and after printing. Cleaning process, it is very important to support the good ink roller.
1. The same as ordinary i wash daily work or after each batch of products printed after the cleaning of the rubber roller should be a real, clean, to prevent the roller surface and the ink in the paint, resin oxidation layer of natural lubrication, a strong layer of film , Or the vitrification of the roller, affects the transmission of the ink. Cleaning ordinary first with the flame oil, and then with gasoline, because the oil is not easy to swing, and gasoline is easy to swing, so that washing can make the ink roller both clean and dry. When washing, pay attention to the middle of the washing ink roller. Under normal circumstances, the ink roller of the offset printing machine is easy to accumulate ink, and the peeling is dry and solid. When the washing is performed, do not completely adhere to the ink scraper. Use a clean cotton cloth to wipe the ink. The place where the device is not washed, and the middle of the ink roller is clean.
2. Beware of pure objects Avoid scratching and squeezing the ink roller with pure material and ink fountain blade. During the printing operation, the offset printing machine should be kept clean and tidy. Things and printing supplies can't be handled at random, and neither the pure material nor the ink shovel should be caught in the ink roller. In the evaluation of the ink roller, the pressure between the ink roller and the printing plate, the pressure between the ink roller and the ink roller are often measured by steel sheets, but the details are taken into consideration. Ink roller surface rubber.
3. Preventing Barrier Deformation Offset Press In the normal operation, the roller pressure is one-sided and averaged, so that there is no dent such as depression in some areas. After a long period of time, the offset printing equipment has stopped the ink roller under a certain flow status, so that it has the ability to partially sag. Therefore, if the light is off or the length of time is extended, the ink roller is best put on hold. To the ink roller holder, keep in mind that there is no need to place it on the countertop directly to prevent the roller from being deformed.
4. Avoid oxidation of the ink roller will oxidize the conjunctiva in the temporary table. Bright and quick-drying resin ink is commonly used in the offset printing process. The special feature of quick-drying ink is to add dry oil to the ink to obtain the diffusion agent. These drying agents will slowly seep into the surface of the rubber roller and make the surface oxidized and confined. , Made of rubber roller sense of fat loss and affect the consequences of ink transfer ink. The way to dispel that malady is to use the methods of farming or machinery to polish the dissolving film. But to be careful the diameter of the roller cannot be changed too little, otherwise it will affect the ink transfer performance of the ink system.
5. Ink roll off Zhu because offset printing is a type of printing method with water intervention, water means that it will produce ink emulsification signs, forming a hydrophilic layer on the greasy roller, forming ink roller deinking. The solution is to scoop up the de-emulsified ink layer, wash the de-inked ink roller with gasoline to clean the hydrophilic and emulsified ink layers, and confuse the surface of the ink roller with 5% sodium hydroxide solution and pumice powder. In addition to the hydrophilic layer, the ink roller is restored to its oleophilic character. At the same time, we must also pay attention to the proportion of offset printing fountain solution, control the pH of the fountain solution, and use the minimum amount of dampening solution to lower the emulsification level of the ink under the condition of not printing the plate. Aptbo gum and other surfactants can not participate in the amount of power.
6. Slowly aging the surface of the ink roller is mainly composed of nitrile rubber. There are two kinds of aging of the rubber: one is the photoaging of the rubber, which affects the ink transfer function of the ink roller; the other is the warm aging of the rubber, resulting in rubber. The appearance of the softened, sticky, and even the emergence of cracks. The aging of the printing ink roller has always been a sign. When the ink roller is placed in direct sunlight, dry and clean, it is possible to avoid being overly moist and may be warm. The roller should be straight at the journal end and should not be exposed or snagged with other surfaces.
7. The protection of the iron chain ink roller Because the offset printing needs water to wet the blank part of the printing plate, the ink can be emulsified. The result of the ink emulsification will inevitably lead to the increase of the oleophilic function of the iron string roller, when severe. De-inking will be impeded. The hydrophilic rubber film on the surface of the iron oscillating roller is easy to remove. If a polar inorganic salt layer is born, high-silk skeletal muscle must be thoroughly cleaned and cleaned with 5% sodium hydroxide solution. Fortunately, the amount of copper coating on the iron roller (copper sulfate solution), due to the excellent oleophilic properties of the copper layer, can improve the ink transferability and oleophilic performance of the iron ink roller. Others must be meticulous. Occasionally emulsified inks have a certain amount of oxidizing agent exposed in the aqueous phase. During the evening, the copper plating layer of the iron chain ink roll will produce black copper oxide. At that time, the deinking Can also present.
In the course of offset printing, whether or not Zhu Roller's usual support can be fair, there is no direct relationship between the life of the roller. Because the ink roller is caused by rubber material, it is easy to swell and deform when it is warm. If it is not used properly, it will appear signs such as dull film or aging cracks, affecting the general transmission of ink, and thus, being the same as ordinary printing operations and after printing. Cleaning process, it is very important to support the good ink roller.
1. The same as ordinary i wash daily work or after each batch of products printed after the cleaning of the rubber roller should be a real, clean, to prevent the roller surface and the ink in the paint, resin oxidation layer of natural lubrication, a strong layer of film , Or the vitrification of the roller, affects the transmission of the ink. Cleaning ordinary first with the flame oil, and then with gasoline, because the oil is not easy to swing, and gasoline is easy to swing, so that washing can make the ink roller both clean and dry. When washing, pay attention to the middle of the washing ink roller. Under normal circumstances, the ink roller of the offset printing machine is easy to accumulate ink, and the peeling is dry and solid. When the washing is performed, do not completely adhere to the ink scraper. Use a clean cotton cloth to wipe the ink. The place where the device is not washed, and the middle of the ink roller is clean.
2. Beware of pure objects Avoid scratching and squeezing the ink roller with pure material and ink fountain blade. During the printing operation, the offset printing machine should be kept clean and tidy. Things and printing supplies can't be handled at random, and neither the pure material nor the ink shovel should be caught in the ink roller. In the evaluation of the ink roller, the pressure between the ink roller and the printing plate, the pressure between the ink roller and the ink roller are often measured by steel sheets, but the details are taken into consideration. Ink roller surface rubber.
3. Preventing Barrier Deformation Offset Press In the normal operation, the roller pressure is one-sided and averaged, so that there is no dent such as depression in some areas. After a long period of time, the offset printing equipment has stopped the ink roller under a certain flow status, so that it has the ability to partially sag. Therefore, if the light is off or the length of time is extended, the ink roller is best put on hold. To the ink roller holder, keep in mind that there is no need to place it on the countertop directly to prevent the roller from being deformed.
4. Avoid oxidation of the ink roller will oxidize the conjunctiva in the temporary table. Bright and quick-drying resin ink is commonly used in the offset printing process. The special feature of quick-drying ink is to add dry oil to the ink to obtain the diffusion agent. These drying agents will slowly seep into the surface of the rubber roller and make the surface oxidized and confined. , Made of rubber roller sense of fat loss and affect the consequences of ink transfer ink. The way to dispel that malady is to use the methods of farming or machinery to polish the dissolving film. But to be careful the diameter of the roller cannot be changed too little, otherwise it will affect the ink transfer performance of the ink system.
5. Ink roll off Zhu because offset printing is a type of printing method with water intervention, water means that it will produce ink emulsification signs, forming a hydrophilic layer on the greasy roller, forming ink roller deinking. The solution is to scoop up the de-emulsified ink layer, wash the de-inked ink roller with gasoline to clean the hydrophilic and emulsified ink layers, and confuse the surface of the ink roller with 5% sodium hydroxide solution and pumice powder. In addition to the hydrophilic layer, the ink roller is restored to its oleophilic character. At the same time, we must also pay attention to the proportion of offset printing fountain solution, control the pH of the fountain solution, and use the minimum amount of dampening solution to lower the emulsification level of the ink under the condition of not printing the plate. Aptbo gum and other surfactants can not participate in the amount of power.
6. Slowly aging the surface of the ink roller is mainly composed of nitrile rubber. There are two kinds of aging of the rubber: one is the photoaging of the rubber, which affects the ink transfer function of the ink roller; the other is the warm aging of the rubber, resulting in rubber. The appearance of the softened, sticky, and even the emergence of cracks. The aging of the printing ink roller has always been a sign. When the ink roller is placed in direct sunlight, dry and clean, it is possible to avoid being overly moist and may be warm. The roller should be straight at the journal end and should not be exposed or snagged with other surfaces.
7. The protection of the iron chain ink roller Because the offset printing needs water to wet the blank part of the printing plate, the ink can be emulsified. The result of the ink emulsification will inevitably lead to the increase of the oleophilic function of the iron string roller, when severe. De-inking will be impeded. The hydrophilic rubber film on the surface of the iron oscillating roller is easy to remove. If a polar inorganic salt layer is born, high-silk skeletal muscle must be thoroughly cleaned and cleaned with 5% sodium hydroxide solution. Fortunately, the amount of copper coating on the iron roller (copper sulfate solution), due to the excellent oleophilic properties of the copper layer, can improve the ink transferability and oleophilic performance of the iron ink roller. Others must be meticulous. Occasionally emulsified inks have a certain amount of oxidizing agent exposed in the aqueous phase. During the evening, the copper plating layer of the iron chain ink roll will produce black copper oxide. At that time, the deinking Can also present.
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