JP2010241093A - Blanket cleaning device for offset printing machine (brush roller cleaning device), diamond-eye roller cleaning device, ink roller cleaning device, and cleaning method for containing nano-bubbles in cleaning liquid used in platen cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning method capable of efficiently cleaning ink dusts or paper powders deposited on a blanket, a diamond-eye roller, an ink roller, and a platen between plates to completely remove them at the completion time of printing of an offset printing machine. <P>SOLUTION: Air is introduced without using any drugs at a nano-bubble generator for generating nano-bubbles effective in cleaning to contain nano-bubbles in cleaning liquid. Cleaning is performed by using the cleaning liquid containing the nano-bubbles at the blanket cleaning device (brush roller cleaning device), the diamond-eye cleaning device, the ink roller cleaning device, and a platen cleaning device of the offset printing machine. Accordingly, ink dusts or paper powders deposited on the platen are efficiently cleaned to be removed. Thus, the number of cleaning times, the cleaning liquid, waste liquid, an increase in hardness of the surface rubber of a blanket or an ink roller caused by the influence of the cleaning liquid, a decrease in outer diameter of the roller, and power of each machine are reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning method of including nanobubbles in a cleaning liquid used in a blanket cleaning device (brush roller type cleaning device), a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device of an offset printing press.

In offset printing, ink residue and paper dust adhere to the blanket, diamond roller, ink roller, and impression cylinder. Depending on the use status of the offset printing machine, paper type, ink type, and H liquid type, there are cases where the accumulation of ink residue and paper powder increases. The conventional cleaning method uses blanket, diamond roller, ink roller, impression cylinder between the plates at the end of printing on the offset press, kerosene-based cleaning liquid, alternative CFC cleaning liquid, and special emulsion cleaning liquid. There are cleaning methods for cleaning diamond rollers, ink rollers, and impression cylinders. (For example, refer nonpatent literature 1.)
Newspaper printing handbook revised edition p. 155 p. 156 p. 157 p. 159 p. 160

  In the conventional cleaning method described above, ink residue and paper dust accumulate on the blanket, diamond roller, ink roller, and impression cylinder of the offset printing machine depending on the use status of the offset printing machine, paper type, ink type, and H liquid type. If it increases, a stable cleaning effect cannot be obtained. Therefore, the accumulated ink residue and paper dust may not be completely removed. This accumulated ink residue and paper dust cause ink transfer failure and deterioration of the image area on the printing plate, leading to deterioration of the paper surface quality. Therefore, it is used in blankets, diamond rollers, ink rollers, and impression cylinders of offset printing machines. It is necessary to repeat washing between plates at the end of printing until the accumulated ink residue and paper dust are removed. Or it is necessary to increase the amount of cleaning liquid used. By repeating the cleaning and increasing the amount of the cleaning liquid used, the influence of the cleaning liquid increases the hardness of the surface rubber of the blanket and the ink roller, and the outer diameter of the roller is reduced. As a result, the blanket and ink roller replacement cycle is accelerated. Repeating cleaning increases the power of each machine. The amount of waste liquid increases. There has been a demand for a method for cleaning a blanket, a diamond roller, an ink roller, and an impression cylinder of an offset printing press that does not require repeated cleaning and does not require an increase in the amount of cleaning liquid used.

  The present invention is intended to solve such a conventional problem, and it is not necessary to repeat cleaning of ink scum and paper dust accumulated on a blanket, a diamond roller, an ink roller, and an impression cylinder of an offset printing machine. It is an object of the present invention to provide a cleaning method that does not require an increase in the amount of use.

  In order to achieve the above object, the present invention includes a nanobubble in a cleaning liquid used in a blanket cleaning device (brush roller type cleaning device), a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device of an offset printing press. It is.

  In the present invention, a blanket cleaning device (brush roller type cleaning device) of an offset printing machine, a diamond roller cleaning device, an ink roller cleaning device, and a cleaning liquid tank of an impression cylinder cleaning device is attached with a nano bubble generator, and air is not used To generate nanobubbles and include them in the cleaning solution. It is characterized by a cleaning method that can efficiently remove ink residue and paper dust deposited on a blanket, diamond roller, ink roller, and impression cylinder of an offset printing machine with a cleaning liquid containing nanobubbles.

  As described above, the cleaning liquid containing nanobubbles of the present invention has a stable cleaning effect even when the accumulation of ink residue or paper powder increases due to the use status of the offset printing machine, paper type, ink type, and H liquid type. Therefore, the ink residue and paper dust accumulated on the blanket, diamond roller, ink roller, and impression cylinder of the offset printing machine can be efficiently washed and completely removed. This eliminates the need for repeated washing. There is no need to increase the amount of cleaning liquid used. Even if the amount is reduced from the normal amount of the cleaning solution, the cleaning effect is more than usual. With the above effects, it is possible to increase the hardness of the blanket and the surface rubber of the ink roller and reduce the outer diameter of the roller. Cleaning liquid can be reduced. Since it is not necessary to repeat washing, the power of each machine can be reduced. The amount of waste liquid can be reduced. The cleaning liquid containing nanobubbles of the present invention does not use chemicals when generating nanobubbles, and only uses air in the nanobubble generator, so that there are no running costs and environmental problems. With the effects of the present invention described above, it is possible to efficiently remove and completely remove ink residue and paper dust deposited on the blanket, diamond roller, ink roller, and impression cylinder of the offset printing press.

  The practical form of this invention attaches a nano bubble generator to the cleaning liquid tank of a blanket cleaning device (brush roller type cleaning device), a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device of an offset printing press. (In many cases, the blanket cleaning device for the offset printing machine (brush roller type cleaning device), diamond roller cleaning device, ink roller cleaning device, and cleaning cylinder for the impression cylinder cleaning device are used in common. If there is a cleaning solution tank in each cleaning device, attach a nano bubble generator to each cleaning solution tank.) Do not use chemicals in the nano bubble generation device, take in air with the nano bubble generation device, generate nano bubbles, Add nanobubbles and return to cleaning solution tank. While this process is being repeated, cleaning is performed with a blanket cleaning device (brush roller type cleaning device), a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device of an offset printing press. According to the cleaning method of the present embodiment, the effect of being able to efficiently clean and completely remove ink residue and paper dust deposited on the blanket, diamond roller, ink roller, and impression cylinder of the offset printing press. It is.

  A blanket cleaning device (brush roller type cleaning device) of an offset printing press, a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device are attached with a nano bubble generator and the cleaning solution is passed through the nano bubble generator. (1) Intake air with a nanobubble generator to generate nanobubbles and include the nanobubbles in the cleaning liquid. The cleaning liquid containing nanobubbles is returned to the cleaning liquid tank of the blanket cleaning device (brush roller type cleaning device), diamond roller cleaning device, ink roller cleaning device, and impression cylinder cleaning device of the offset printing press. (2) This process is repeated during washing. Cleaning is performed using a cleaning liquid containing nanobubbles in a cleaning section of a blanket cleaning device (brush roller type cleaning device), a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device of an offset printing press. ((3)) [Flowchart 1]

  A nanobubble generator is attached to the cleaning liquid tank of a newspaper offset rotary press (brush roller type cleaning device), diamond roller cleaning device, ink roller cleaning device, and impression cylinder cleaning device. Air is taken in with a nanobubble generator, nanobubbles are generated, and nanobubbles are included in the cleaning liquid. The cleaning liquid containing nanobubbles is returned to the cleaning liquid tank of the blanket cleaning apparatus (brush roller type cleaning apparatus), diamond roller cleaning apparatus, ink roller cleaning apparatus, and impression cylinder cleaning apparatus of the newspaper offset printing press. While cleaning this process, using a cleaning liquid containing nanobubbles in a newspaper offset printing press blanket cleaning device (brush roller type cleaning device), diamond roller cleaning device, ink roller cleaning device, impression cylinder cleaning device And wash.

Claims (1)

A cleaning method in which nanobubbles are included in a cleaning liquid used in a blanket cleaning device (brush roller type cleaning device), a diamond roller cleaning device, an ink roller cleaning device, and an impression cylinder cleaning device of an offset printing press.