Indirect, direct inter

Burn out: indirect film printing down simple, indirect printing down the side of the base from the film exposure, the indirect method based on the film of the film, the film with the emulsion side Positive fit, fixed in the proofing box, To prevent flare, can be placed in the film base side of the black or red thick paper, image size is large, the high accuracy, it is necessary to burn out the vacuum suction so that bottom plate and the film is more fitting to improve the quality of printing down.

Exposure time, as long as the UV light source can be used, to high accuracy screen printing production version, you must use point light sources, halogen and high-pressure mercury metal ideal. Best not to use fluorescent light sources. The correct exposure can be used for calculating exposure measurement can accurately grasp the exposure I have time. Indirect method after developing the film surface film thickness of 10 microns, so that the thickness of printing the best accuracy and resistance to Indian forces.

Epidural treatment: indirect film after printing down to the hydrogen peroxide solution for epidural treatment in 1.2% aqueous solution of hydrogen peroxide soak for a minute most appropriate. But do not use hot water because hot water diluted hydrogen peroxide, oxygen would run away, so will not achieve the role of dura mater, so the use of water should not exceed 20 .

Imaging: the dura treated by the indirect method of film, erected on the sheets with 30 water for washing fully develop and clean the parts of the image lines can not leave any express film, or mesh blocked Ink is not easy through.

Screen the pre-treatment: after developing the film to the screen before reposted elsewhere, should screen for pre-treatment. Stainless steel wire mesh, as long as degreasing treatment can be carried out, but nylon and polyester mesh just is not enough to skim, but also with a cleaning agent on the entire mesh scrub, brush hair loss may not, after brushing thoroughly wash with water, flush to the screen surface can have clean water film, which proved that pre-treatment has been completed screen.

Reposted elsewhere: Pretreatment good screen, posting a pre-rinse with water, so that there is enough wire surface water film, the film emulsion surface and the screen fit, place the bubble as far as possible not to appear, if large sheet of film can be Network box Oblique stood, to fixing the film from the bottom up. If it is to carry out multi-color overlay be placed in the specified location screen film, they can advance in the network box fastened around the rules. If placed on the stage of paper formation, conduct reposted elsewhere, you can absorb the moisture out of film lamination, the effect is better.

Drying: After absorbing screen, to put up to dry naturally, if the heat is too high to force the drying, due to the edge of a small part of the image not the same degree of drying, warping occurs, can cause damage during printing , or easy to cause spalling. Natural dry version, because the entire surface drying on average, does not appear worn or damaged plates, plate accuracy is good, printing large quantities. If dried, they found the side of the white film, which proved that the natural from the emulsion from the film base, when the soft piece of the base by hand can be easily torn off.

Blocking eye: the stripped-based soft pieces before the printing surface side of the bucket with a scratch coating a layer of sealing agent is then stripped of soft Woods Foundation, as part of a film based image protection, sealing pore is not painted into the image to go, sealing agent can only smear a thin layer, because such a sealing agent resistant Solvent Performance. After coating, drying, even if the end of the plate.

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