Analysis of the Cause of Powder Spray Deposition in Offset Printing

Symptoms: Dust deposits on the blanket, causing severe color loss. In some cases, dusting will be transferred to the plate, resulting in dampening and scumming/dirty plate problems.

Causes and measures:

The reason for this phenomenon was that too much dust was used in the previous printing. It can be solved with three kinds of measures: printing with powder under the condition of non-winding; overprinting with ink oil if necessary; and processing for removing dust from paper.

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