| This article describes Plate common fault, in general, because not enough suction or no suction, the photographic film and photographic materials can not mesh closely attached to the glass, causing plate appeared to walk, distortion, jagged, blurred other substandard screen.
Plate there is not enough suction or no suction causes of such failures, the main analysis of the following steps: pumping a preliminary way to judge is to separate the pump and pipe, pumping with the thumb to block the suction pump, pressure gauge indicator is pointing to the maximum value observed, If the point is illustrated in the maximum pumping vacuum pump is operating normally, you should determine the trachea, air leak blanket portion (including: blanket leakage occurs trachoma; sealing adhesive strips bad leak occurs; cover version of the tension adjustment screw not adjust the right, loose, tight leak will occur; suction throughout the interface, loose, off the leak occurs, etc.). If the barometer index indicates little or no reflection pumping pump is not functioning properly (symptoms include: vacuum pump motor coil burnout stop pumping operation, resulting in stuck oil pump stops running, vacuum suction is not within the leaf damage caused by the phenomena reasons).
Plate with a certain time, feeling the actual exposure time than expected increase in the number of exposure time.
(1) reduced exposure light energy to work long hours required to replace the lamp.
(2) even if the replacement of a new lamp, the required exposure time is still long. Then first consider the clean cabinets; and secondly to consider whether the reflector has a good reflection effect, and the glass of the light effect; then followed by the replacement should consider whether the quality of the new lamps have a problem.
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