The importance of signing system in quality management
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The signing system is the most common method of quality control in printing companies. The quality of a sample proof is directly related to the quality of the entire batch of products. The quality of products directly affects the efficiency and reputation of the company. Qualified sample proofs will undoubtedly become the quality standard for the batch of products, and become the “reference material” for self-inspection of machine personnel. Sanya Zhicheng Color Printing Co., Ltd., while strictly implementing the ISO9002 Quality Assurance System, pays particular attention to the strict execution of the sample-taking system prior to the start-up of various processes, setting a screen for preventing unnecessary quality accidents, and the overall product quality of the company. The improvement has played a decisive role. Our main experience is as follows:
First, the company has developed a product classification system and a variety of product licensing system
In order to effectively conduct production and inspection, we classify the company's products into Y grade (excellent grade), H grade (certified product), and P grade (common product) categories (H grade and P grade General product).
Y-level: The small boxes, middle boxes, and cartons of various pharmaceutical companies that are printed, color samples, color flyers, hand-made bags, and color bottle stickers are all examples. Such products are the key products of the company and need to be sampled at three levels. The director of the workshop is grade one, the quality inspection manager is two, and the master engineer is three.
Level H: The four-color prints in the brochures and the social prints of the pharmaceutical companies are all of this type. The second-level sample is executed, the workshop director is level one, and the quality control department manager is level two.
Level P: The offset printing paper or copperplate printing paper in social prints is of the same type. It needs to be signed at one level and the quality inspection department must sign it.
The operation department and the production department use these methods to indicate on the construction order and production work order, respectively, to guide the production and inspection of each process. In the process of executing the sample-licensing system, the company not only sent the proof products to the customers for the first batch of printed products, but also invited the customers to sign and confirm the samples in the workshop to prevent unnecessary disputes.
Second, the offset printing shop is the leader of the enterprise and it should be closed.
When signing the workshop, please note the following:
a. Whether the used paper type, specification and ink type are consistent with the production work order.
b. Whether the rules line is complete or overprinting is accurate.
c. Whether the ink volume is even and flat. If the cable version is used, whether the dot is lost or dirty, and the angle of the cable is correct.
d. Whether the hue is consistent with the sample sheet, and the new spot color ink must be sent to the Quality Inspection Department for confirmation before it can be used.
e. Whether the pattern position is correct, whether it is in the paper web, whether the text is correct, whether it is out of edition, missing word, typo, or lack of strokes.
f. Measure the density of the sample proofs in time and record them. Write out the proportions of the color sequence and spot color inks.
g. Each batch of product revision should carefully compare the sample drafts to check whether the position and pattern are correct. The new product must use the imposition diagram to check whether the imposition is correct.
h. Since the pirated product depends on whether the back is scratched or not, whether the bite is reversal or not.
I. Products with die-cutting indentation should be folded on their own to see if the page number is correct.
Copies of the sample copy are made in duplicate, and the Quality Inspection Department and the Production Department each keep one copy, which is put into a dedicated sample copy storage cabinet. The production department signed the sample draft as proof of the next batch of printing, and the quality inspection department kept the archive.
Third, the significance of the implementation of the signing system
The method of signing is not the same for all manufacturers. Some manufacturers are in the printing process, after taking the ink and drawing two out of them to sign the sample. We believe that this method is not serious. The quality of the product before the sample is difficult to guarantee. If we neglect it, we will create batches of products. Product is scrapped. We use the first sample, post-printing, try to use more than a piece of paper, until the ink and ink are level, the contents of the company to achieve the best results before signing. Although this takes a long time, but the quality can guarantee that after the sample is printed are basically genuine. At the same time, this batch of printed drafts can be used as the standard for the next printing in the case of non-revised editions. If it is midway signing, the color hue will be more and more far from the deviation, not to mention the printing of pharmaceutical packaging, life-threatening things, and must not give counterfeiters organic. However, due to the quality and carelessness of the sample-taking personnel, some mistakes may also be caused. For example, when the company printed a four-color folding business card for a company's manager, the sampler's blind pursuit of the same color, and forgot to cut off the sample to see, After signing the sample, they found that the resignation of the mouth caused the batch of business cards to be scrapped. Therefore, the sample-taking work is a very serious, serious, and careful work. It requires the sample-taking personnel to have high quality and solid foundation, so that they can take preventive measures.
Only by strictly executing this kind of sample signing method can we ensure that the color quality of the customer's product is consistent before and after, and the company's visibility and competitiveness are improved.