Common faults and solutions of CTP output

Common faults and solutions of the current CTP machine are as follows:

One, the image pixels of the version are not enough

Cause: The document processing problem was not found in the publication. Processing: Reprocessing the document to avoid this situation: when publishing, the same single sheet can be issued a copy of the proof (must be carefully checked), and there is no problem after proofreading. If there is a problem, it is necessary to report to the supervisor in time and change the file.

Second, the layout is not clean

Reason: CTP exposure energy is not enough. The bottom gray of the layout affects the vision. If you don't look carefully, you may not see it (you can't see the dots with the amplifier). The way to avoid this happening again: use the erasing pen to erase the edge of the plate, and after wiping, there is a very sharp contrast. Treatment: Increase the CTP exposure energy.

Dealing with similar problems: The layout is not clean and is caused by many kinds of problems. The following are summarized as follows:

1. Speed ​​of plate-making machine: When the CTP energy reaches the standard, the plate has a blue background when it is punched out. Adjustable speed of wiping machine.

2. When the development temperature reaches the standard of CTP energy, the plate is washed out with a blue background. Increase the developing temperature when the speed cannot be adjusted (for example, the dots will be diluted after the temperature is increased, which can be adjusted quickly)

3. The method of pressure on the hair stick of the plate-making machine is rarely used. In the case that the above 1-2 are invalid, the pressure of the hair stick can be properly adjusted. (Note: The hair stick is damaged when the version is brushed, and the hair stick hair falling off and shortening will affect the effect of the version.)

3. The printing machine has dirty spots

Reason: There is a dirty spot when the version is rushed out (the supplemental liquid cannot be pumped)

Treatment: Check whether the glue stick of the version is very dirty and wipe it clean. Replenish development by operating the processor, and directly pump some development to replenish or release some old development to replenish some new developer. (If the development is used for too long, you need to consider replacing the development, replace the worry, and clean the machine)

Ways to avoid this happening again: Before each publication, you must first use the scrapped version of the processor several times. Check if the replenishing solution is pumpable, wipe the glue stick with sponge wet water.

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