Family planning vehicle mobile family-planning clinic
Vehicles used for family planning operations or publicity guidance and transportation of birth control equipment.
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Guides
of Exposure
1) Wire cloth and stain mesh shielding is
strong, therefore, the desired exposure time to be longer. Rough wire mesh and
fine wire mesh to the long exposure time required.
2) is preferably a vacuum state in order to ensure the sharpness of the
halftone pattern and the sawtooth and biting teeth phenomenon, let halftone to
ensure full contact of the backsheet and the photosensitive layer should be
remembered that the exposure to dyeing mesh time longer.
3) in the use of the tunable light source (position adjustable), In order to
ensure uniform and reduce the biting teeth phenomenon, the halftone exposure
distance is preferably 1.5 times the diagonal of the pattern by the sun or the
diagonal length of the halftone 1.5 degrees.
4) lack of exposure, often brought to the screen
can not be reused or with trachoma and serrated. Flush, if the network version
of the squeegee surface sticky and soft feel, indicating that the halftone
underexposed, i.e. not enough light reaches the squeegee the surface of the
photosensitive layer, so that the photosensitive layer can easily be washed
away. Meanwhile, the underexposed, the photosensitive layer is softer or the
photosensitive layer is washed away. The network version is not resistant to
mechanical abrasion and solvent resistance.
5) Sometimes, the underexposed Screen also take remedial measures. : Gently
rinse off the screen, will be washed away by the softer photosensitive layer,
rub with White, and then drying the screen, and the last exposure.
Note, the squeegee side facing the light source.
6) As the temperature and humidity changes with the seasons, it is recommended
that every few months to be one step exposure test. At the same time,
Proofing light source will change in the long-term use of the process, and also
because of the power storage device may not be able to provide timely
supplement. Periodic step-by-step exposure test so you can know the use of the
light source and the light bulb, and when given replacement.
7) if necessary, replace the lamp.
8) Diazo or dual processing photosensitive paste, there are often latent image
(shadow) appeared shadow color change after exposure.
UV Expsoure Machine
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