Shaiban generally requires 2% to 97% of the outlets to appear: 2% of the small outlets are not lost, 50% of the outlets in the middle zone are not expanded beyond the standard, and 95% to 98% of the outlets in the dark spot are not pasted, that is, PS. 3%, 50% (60%), and 98% of the three versions of the website are in good condition.
1 How to deal with several types of situations encountered during printing
1 In the case of photocopying, the darkness of the film in the graphic part is poor. In order to achieve the deepening of the graphic version of the printing plate, the method of reducing the exposure time should be adopted to achieve the purpose of the graphic sunning.
2 If the plate is to be lightened, increase the exposure time to achieve the purpose.
3 In order to ensure the quality of the printing plate, a scientific basis such as a step scale and a signal strip test strip can be used to control the plate exposure and development operation.
2 After the printing plate quality inspection
1 whether the color of the printing plate meets the color of the overprint. If the printing plate is marked with colors other than Y, M, C, BK, etc., as long as you look at the colors, you will know which color plate is on the plate, and you can also judge the colors based on the network line angle.
2Check the virtual situation of the network
The printed version can be used to observe the virtual reality of the printing plate with a 10x magnifying glass. If the outlets are hairy, grayish, or even white-hearted, not circular, indicating that the outlets are not strong, the sensory performance of the outlets will not be good.
3 plate tone and shade inspection
Mainly depends on whether the layout of the entire printing plate is rich or not, whether it meets the requirement of printing (monochrome), and mainly checks the three points of printing plate that are out of the sun, that is, the high-profile area, the intermediate tone area, the dark tone area, and the bright tone adjustment area. % of the small outlets are not lost, the midpoint of the regional outlets is not obvious, 95% of the outlets are dark, and the size of the outlets is basically the same as the size of the outlets, so the depth of the printing plate meets the requirements, such as the depth of the description. The idea is small.
4 Plate Specifications and Crosshair Inspection
The specifications of the split printing plate are 920×760 mm. Before printing on the machine, the printing plate size should be measured. In particular, the recycled PS plate should be carefully inspected. If the printing plate is skewed, the printing plate must be trimmed with a cutting knife.
According to the position of the proof on the graphic, check whether the position of the printing plate is correct, whether the mouthpiece and the tip are reversed, whether the phototext is centered, whether the bite size is correct, and whether the plate is skewed. The squashing of the printing plate is too large or too small, which is not conducive to plate correction.
Drying out the printing plate should be complete. Corners, midlines, rules, and trailing lines must be complete. Plate flatness is good, to reduce horseshoe print marks on the PS plate, as shown in the text and blank areas have a slight bump phenomenon, you can use the soft material to level the top of the plate, under the premise of not damaging the plate, The layout is smooth to facilitate uniform layout pressure throughout the site.
5 plate and space inspection
Check whether the dried and printed plates are complete and continuous. The requirements for graphic and text are not incomplete, and they are continuously updated. The text and proofreading are correct. Every stroke and punctuation mark cannot be missed, and problems are dealt with promptly.
In the blank part of the plate, check for scratches, dirt spots, and the presence of residual photoresist. The blank part of the plate is required to be clean, tidy, and free of dirt and dirt.
Source: "Printing World" Author: Wang Town
1 How to deal with several types of situations encountered during printing
1 In the case of photocopying, the darkness of the film in the graphic part is poor. In order to achieve the deepening of the graphic version of the printing plate, the method of reducing the exposure time should be adopted to achieve the purpose of the graphic sunning.
2 If the plate is to be lightened, increase the exposure time to achieve the purpose.
3 In order to ensure the quality of the printing plate, a scientific basis such as a step scale and a signal strip test strip can be used to control the plate exposure and development operation.
2 After the printing plate quality inspection
1 whether the color of the printing plate meets the color of the overprint. If the printing plate is marked with colors other than Y, M, C, BK, etc., as long as you look at the colors, you will know which color plate is on the plate, and you can also judge the colors based on the network line angle.
2Check the virtual situation of the network
The printed version can be used to observe the virtual reality of the printing plate with a 10x magnifying glass. If the outlets are hairy, grayish, or even white-hearted, not circular, indicating that the outlets are not strong, the sensory performance of the outlets will not be good.
3 plate tone and shade inspection
Mainly depends on whether the layout of the entire printing plate is rich or not, whether it meets the requirement of printing (monochrome), and mainly checks the three points of printing plate that are out of the sun, that is, the high-profile area, the intermediate tone area, the dark tone area, and the bright tone adjustment area. % of the small outlets are not lost, the midpoint of the regional outlets is not obvious, 95% of the outlets are dark, and the size of the outlets is basically the same as the size of the outlets, so the depth of the printing plate meets the requirements, such as the depth of the description. The idea is small.
4 Plate Specifications and Crosshair Inspection
The specifications of the split printing plate are 920×760 mm. Before printing on the machine, the printing plate size should be measured. In particular, the recycled PS plate should be carefully inspected. If the printing plate is skewed, the printing plate must be trimmed with a cutting knife.
According to the position of the proof on the graphic, check whether the position of the printing plate is correct, whether the mouthpiece and the tip are reversed, whether the phototext is centered, whether the bite size is correct, and whether the plate is skewed. The squashing of the printing plate is too large or too small, which is not conducive to plate correction.
Drying out the printing plate should be complete. Corners, midlines, rules, and trailing lines must be complete. Plate flatness is good, to reduce horseshoe print marks on the PS plate, as shown in the text and blank areas have a slight bump phenomenon, you can use the soft material to level the top of the plate, under the premise of not damaging the plate, The layout is smooth to facilitate uniform layout pressure throughout the site.
5 plate and space inspection
Check whether the dried and printed plates are complete and continuous. The requirements for graphic and text are not incomplete, and they are continuously updated. The text and proofreading are correct. Every stroke and punctuation mark cannot be missed, and problems are dealt with promptly.
In the blank part of the plate, check for scratches, dirt spots, and the presence of residual photoresist. The blank part of the plate is required to be clean, tidy, and free of dirt and dirt.
Source: "Printing World" Author: Wang Town
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