Analysis of the internal structure of the developing machine

Generally, the developing machine consists of a power system, a developing solution tank and a spray pipe, a washing tank, an extrusion (water) roller, a glue coating tank, etc. A good developing machine should also have a timer and a temperature control system.

1 Drive system: It is the drive device that guides the PS version operation. It is driven by the motor through the worm gear or sprocket chain rotation of the transmission roller, and through the press roller to drive the PS plate through the various aspects of the development process.

2Development System: In the PS plate development process, the continuous developer is sprayed evenly through the circulating developer, and the photosensitive layer of the blank part of the printing plate is rapidly dissolved. Some developing machines are also brushed with a brush roller to accelerate the dissolution. In order to ensure that the developer operates under constant conditions, this section also has heaters and coolers that automatically adjust the temperature. The liquid circulation is automatically filtered to ensure that the concentration and temperature of the liquid medicine are uniform throughout the entire area.

3 Flushing System: Spraying water is mainly sprayed on the front and back of the layout by two groups of spray pipes to remove the developing product and excess developer attached to the plate surface, and the water on the plate surface is squeezed by the squeeze roller. With secondary washing function.

4 gluing system: The main function is to apply a uniform protective layer on the developed plate. Many developing machines have a self-cleaning roller.

5 Drying system: Composed of an air supply tube and a rubber roller, the plate is rapidly dried by blowing and heating, and finally the plate is sent out.

Adjustment of the developing machine (working part)

1. Adjust the pressure between the rubber rollers according to the thickness range of the printing plate to ensure that there is no liquid or small liquid.

Developer/Wash, Wash/Protection, Protective Glue/Drying Section, the version comes clean from both rolls.

Adjust the pressure between the rollers to adjust the thickness of the glue to ensure the glue

The hardness of the rubber roller is adapted to the printing plate. Under the circumstance of ensuring the above requirements, the pressure is as small as possible, the pressure is too large, the load of the developing machine is increased, and the easy card version is increased.

It is necessary to ensure the development latitude of different thickness plates

2. Brush wheel pressure

Brush is clean, flexible, no burrs, no scratches

Adjust pressure according to test results to ensure dot restoration

The pressure is as small as possible, the pressure on the plate is difficult to pass, and the site and the small outlet are subject to wear and tear.

The direction of rotation of the brush wheel is opposite to the direction of advancement of the plate, which is beneficial to the development effect

Adjust according to the thickness range of the plate to ensure the development latitude

3. Adjustment of hydraulic pressure

Feel the water pressure with your hand, strong enough to ensure full washing

Developer's parameter settings

Temperature: even temperature distribution, PS version four-point error does not exceed 1 °C, CTP developer can not exceed 0.5 °C

Developing time: Control the development time by adjusting the plate speed

Developer supplement (start-up, static, dynamic): In the development process, the developer will gradually degrade and reduce the development performance, so it needs to be replenished. Set according to media and developer type

Brush wheel speed: According to the actual test effect settings, to ensure the density of the field, the normal recovery of small outlets

Pressed version of water and water pressure (front and back): to ensure full washing

Drying temperature: 50--70 °C

Depends on drying conditions and printing effects

Maintenance and Maintenance of the Processor (General)

1, to ensure the developer circulation, glue circulation, water cycle smooth, no clogging;

2, regular replacement of the developer, while cleaning the processor (usually can be cleaned once a day);

3, regular replacement of filter, generally replaced once a week (recommended to use 100u filter);

4, regular replacement of protective plastic and cleaning plastic protective system (recommended once a day);

5. Scrub the rubber roller every day (possibly clean soft cloth dipped in developer solution);

6. Clean the rubber roller thoroughly and regularly to ensure uniform pressure between the rollers (once a week);

7, regular cleaning heating section guide (once a week);

8, the whole machine is clean, the surface does not have residual developer or other chemical agents