Film after the formation of latent image after exposure to water after developing and fixing of water freeze treatment. Ultimately form the image area and non-image area.
In the modern printing industry, copy of film making is all the printing program when one of the first, it is directly related to the printing quality. Therefore, gravure printing, offset printing, letterpress printing all of this as an important part of pre-press technology to treat.
Although the CTP technology are advancing rapidly, but in the plate-making technology, especially printing, silk screen, hot stamping field, still holds an important position. |
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| Usage︰ | Using KC-PM-3266FL film output machine film exposed film developing and fixing processing.
Photographic film output has been, you need water to develop water and fixing latent image freeze, the formation of the final film for the printing down the process of printing down. |
| Use Method︰ | 1 exposure of imaging: the film came to light, silver to restore the silver centers, but this time not see on film graphics, known as the latent image.
2 Developing: soon after the silver by reduction of light into the black silver grains. Developing hand when punching through the immersion exposure uniform silver film developer, due to the production of silver for printed photographic negatives lower rate, so you can monitor the development process in the security lamp, but the lights should not be too bright to avoid a run-ray film. When the film both sides of the same black color depth images, it should stop developing the. Remove the film from the developer, water rinse or wash the acid stopped after the film into the fixer in the fixing of the can. Developer of the temperature on the speed of development is very large, the higher the temperature, the faster development. More suitable developing temperature of 18 to 25 degrees.
3 "Snapshot: that is to restore the silver film on the silver does not dissolve in order to prevent further exposure of this part of silver halide film image. Fixing time for hand-punching is no photographic film after partially transparent, plus double the time.
4 "washing: Fixing sticky film after the sodium thiosulfate and other chemicals, if not clean, the film will turn yellow failure. Hand punching usually running water 15 to 20 minutes is appropriate.
Five "dry: hand after punching the film should be dried and placed in a cool dry place for safekeeping. |
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