Why is the problem that the PS version is not strong enough?

A: The PS version is a kind of pre-coated photosensitive material. The printing is composed of many links. Each link must be strictly operated to ensure the quality of printing. There are many reasons for the poor printing-resistance of the PS plate. The printing conditions vary from printer to printer, such as running light (before exposure and before development); the density of the positive image film is insufficient; excessive development; the adhesion of chemicals; Strong print plate cleaners and roller cleaners are used in cleaning agents; printing pressure is too high; paper dust, etc. may cause a decrease in the resistance to printing forces. î—¥ î—¥ The main countermeasures to deal with a yellow safety lamp lighting, full coverage of harmful light; re-create positive photo film (density of 1.5 or more); under standard conditions of development; configuration of the appropriate developer, pay attention to the development time; do not use inappropriate Drugs; reduce the number of wiping; use a softer cleaning agent; adjust the printing pressure and so on. Printing companies can refer to the above reasons to see whether they have overlooked a certain point. At the same time, they can also participate in the Fujitsuguang company to organize plate-making training, to master the correct exposure, development methods and operating procedures, to achieve the best use of the plate material.

What is the reason why the layout of the printing plate is too weak after printing? What are the solutions?

î—¥ î—¥ A: The layout can be used to start with the printing machine and the printing conditions. The main reasons are: the stain on the glass of the printing machine, the foreign matter or dirt attached to the film, and the improper patching of the positive image; Insufficient vacuum adhesion with PS plate; Slurry pad is not suitable; Before exposure (during punching), or after exposure to development Runout; Excessive development (high liquid temperature, long time, high liquid concentration) Etc.; solutions include: using a cleaning agent to clean the glass or film; put the film away from the image part 3 mm above the collage; confirm whether the film is close to the PS plate, and then exposure; adjust the gasket to make it flat; Work under safe light. Be careful not to replenish excessive replenisher to prevent over-concentration of developer. You can also try Fuji star company's dusting products, can effectively solve the above problems.

Why there is residual unexposed film on the PS plate after development?

A: The various printing companies have experienced this situation to varying degrees. The main reasons are: the activity of developer has been reduced and they have not been supplemented in a timely manner; after exposure, due to dirty spots and foreign objects on the PS plate, the development is hindered. . Matters needing attention: First, increase the concentration of the developer, second, appropriately lengthen the development time, third, increase the temperature of the developer, fourth, replenish the developer in a timely manner, and fifth, prevent backwash of the developer in the developer. Just pay attention to the above five points, you can develop the ideal PS version.

After revision, modify the part of the dirty, how to deal with?

A: Analysis of the causes of this problem may be the following: 1, inadequate correction. The problem is that the amount of correction fluid is small, the moisture of the plate surface is not wiped dry, the time of the painting is short, and the correction fluid is changed to xxxx (opening the lid). This will cause problems such as insufficient correction, too long time for alteration, and damage to the hydrophilic layer. Dirty pen 4, poor oil repellent after painting, with plastic markings. It is recommended to take the following measures: 1. Use a nib to make up the correction fluid 2. Before the change, remove the water from the layout to the net 3. Change the time from 30 to 40 seconds. Then wash it with water 4. Cover the cover when it is used 5. After the change, wash it. , coated with Fuji star supporting products PP-I type PS version protective plastic (manual) or PP-IIxxxx PS version protective plastic (machine)

What happens when the photosensitive layer peels off and separates?

A: Analysis of the causes of this problem may be the following: 1, the use of PS version caused by scratches, scratches, under pressure caused by scratches, scratches 3, in the vibration of the venue Store PS version 4. Wipe cloth with cotton cloth. 5. High concentration of developer It is recommended to take the following measures: 1. Be careful not to rub the PS plate 2. PS plate frame should not be placed on the site with vibration 3. The concentration of the developer should be appropriate. .

What happens when the ink is not good at the beginning of printing?

A: Analysis of the causes of this problem may be the following: 1, without the use of the specified glue or glue over-concentration 2, uneven coating 3, the drying temperature is too high 4, contact with the glare after the glue 5 It is recommended to take the following measures after depositing in a high-temperature and high-humidity environment after plate making: 1. Use Fuji Star's accessory product PP-I type PS plate protective glue (manual) or PP-IIxxxx type PS plate protective glue (machine) 2. Adequate dilution of the glue 3, hand-glue to achieve smooth and dry 4, the drying temperature is set to 60 degrees below 5, after the glue to prevent exposure to light 6, do not store in a high temperature and humidity environment

Source; CA800 Search