1, in the case of mastering the operation technology of the digital programming instrument, first load the film and the drilling test plate, measure the length and width of the two deformation, in the digital programming instrument according to the size of the deformation of the hole to lengthen or shorten the hole, with the drilling test plate after lengthening or shortening the hole to match the deformed film, eliminating the tedious work of splicing the film, to ensure the integrity and accuracy of the graph. This method is called "changing hole position method".

　　2, in view of the physical phenomenon that the negative changes with the change of ambient temperature and humidity, the negative in the sealed bag is taken out before the copy of the negative, and the working environment conditions are hung for 4-8 hours, so that the negative is deformed before the copy, so that the deformation of the negative after the copy is very small, called this method "hanging method".

　　3. For graphics with simple line, large line width and spacing, and irregular deformation, the deformed part of the film can be cut open to the hole position of the drilling test plate and then copied, which is called the "splicing method".

　　4. The hole on the test plate is enlarged into the line piece of the welding pad to deform, so as to ensure the minimum ring width technical requirements, which is called the "welding pad overlap method".

　　5. The graphics on the deformed negatives are scaled up and then remapped, which is called "mapping method".

　　6, the use of a camera to enlarge or reduce the deformation of the graphics, called the method of "photography".

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