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Printing technology

As we all know, there are 125 variables that need to be controlled in every lithographic printing machine, so it is difficult to achieve the goal of keeping the consistency of business card printing in Shanghai. A prepress expert once told me that they can produce digital printing plates with errors within 0.5% under the constantly changing environment of prepress workshop. Why we can't do this is a complicated problem, but we can better manage the printing press by adhering to the best practices and controlling the workflow.

Printing technology As we all know, there are 125 variables that need to be controlled in every lithographic printing machine, so it is difficult to achieve the goal of keeping the consistency of business card printing in Shanghai. A prepress expert once told me that they can produce digital printing plates with errors within 0.5% under the constantly changing environment of prepress workshop. Why we can't do this is a complicated problem, but we can better manage the printing press by adhering to the best practices and controlling the workflow.

In order to avoid these problems, printing machine operators must ensure the cleanness, ink absorption and softness of the cylinder. I might read the hardness requirements of each cylinder put forward by the printing press manufacturer. Some manufacturers may put forward different hardness requirements for cylinders according to their functions and their positions on the printing press, while some manufacturers may provide users with a hardness value suitable for all cylinders. Now, you must choose an appropriate hardness value fo

When exposed to ultraviolet light or in an environment with high temperature and easy oxidation, the drum will become hard. Therefore, it is best to store the rollers in a dark place and keep them away from heat sources and electric motors.r your printing cylinder, and try to keep this value.

To keep the cylinders of printing presses soft, it is best to clean them once a week with decalcified solution or hot water containing 15% vinegar. In addition, every weekend, the operator should thoroughly clean the roller with ink roller cleaner, and wash the roller again on Monday morning. If possible, try to avoid using chemicals on the roller, and never use steel pads. In an ideal situation, it is best to remove all the cylinders on the printing press for manual cleaning every other quarter, and at the same time, clean the support and frame of the printing press. This is an arduous task, but as long as you work hard, you can see the disappearance of stains and the improvement of printing quality.

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What are the paper sizes of A3/A4/A5?

A3/A4/A5 refers to the size specification of paper, which means that after the paper is made, it is trimmed and trimmed to a certain size. In the past, the size of paper was expressed by how many "sheets" (such as 8 sheets or 16 sheets, etc.). Now, I adopt international standards, which stipulate that A0, A1, A2, ... and other marks are used to express the format specifications of paper.

In our daily life, A4 copy paper, 8K paper refers to these sizes, namely A4 paper (16K paper) size is 297mm×210mm, and 32K notebook (A5 notebook) size is 21cm × 14.8cm.

The current format size is mainly a series of specifications, which are as follows:

The size of paper printed here is different from that of international standard paper. There are several paper sizes commonly used for printing here: