Problems that are easy to ignore in adjusting printing pressure

The importance of printing pressure in the printing process is beyond doubt. It is also easy to grasp the correct pressure data, which is generally described in the operating instructions of the printing press. However, in the actual printing, the quality of the printed matter and the failure of the printing equipment due to the inaccurate pressure are also everywhere. According to work experience, the author thinks that the majority of faults are often caused by irregular operations and errors.

1. Improper use of the microSD card. When many operators use the micrometer card, the drawing is convenient. When the adjustment is not to rotate the top of the microSD card, but to directly reverse the middle of the caliper, the error will be reached when measuring the softer measurement objects such as blankets due to different strengths and sizes. 2mm or more.

2. When changing the version or changing the blanket, it violates the operating procedure. No measurement is made on the backing paper, only the number of sheets of the original backing paper is counted, and then the original number is replaced, and the result is often wrong without knowing it. Because: the original wrapping paper may have different basis weight, 80g/m2, 100g/m2, etc.; the lining paper may also be different in the ration; when changing the version may be printed on the back of the paper is ignored and ignored, so that If the paper being replaced is exactly the same, the printing pressure will be changed due to less paper loading, resulting in a failure of overprinting.

3. It is prone to error when measuring the distance between the rollers. 1 The automatic pressure is used. Although the front gauge detection is disconnected, the machine will still be isolated when the parking pressure is measured. Therefore, the measured data is probably the data of the semi-clutch state. ;2 When using a fuse, the fuse used is too hard or too large in diameter. Since the fuse does not rely on its hardness to achieve current safety, the hardness of the fuse may be different even though it is the same amp. 3 The calculated thickness of the blanket lining should be 0.5~1mm less than the actual lining. Depending on the circumstances of the printing, it may be increased or decreased as appropriate.

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