Business form printing process management (below)

Business form printing process management

Commercial forms have a wide variety of printing requirements and require a higher level of quality. In addition to judging products from the aesthetic point of view, it is also necessary to assess whether the product size is qualified from the perspective of processing. Therefore, the user should formulate different process requirements according to different prints, strictly control the quality, and strictly organize production.

(I) The production methods can be divided into two methods according to the size of the production batch. The first is a variety of products with different numbers and printing quantities. The commonly used production techniques are: web-paper → offset-printing → punching, plunging lines → folding → collating → number-calling → packaging. The second is large-volume commercial forms. The production methods are: web-rolling → offset printing → punching, plunging lines, rewinding → matching pages → playing numbers → tearing off single sheets or duplicating continuous papers.

(B) production process management 1, production process: notices → plate making (including: typesetting, imposition, photography, printing) → production material preparation → printing → page numbering (or tearing sheet) → finished product processing.

2. The setting of the process notice: The process notice is the command of the product processing, which includes the number of prints, paper type, quantity, plate making requirements, price, etc. The business form printing process notice has its own particularity compared with the production notice of the general printing product. In addition to the necessary columns for general printed production notices, necessary process descriptions such as the number of joints, the method of horizontal and vertical ridges, and the location and arrangement of the numbers are also required. The notice must be printed in the same way as the instruction manual, and the proofs should be affixed with proofs on the proofs to avoid misunderstandings between the orderer and the actual operator.

3, plate-making: business forms are generally used in commercial, bank, transportation, post and telecommunications, enterprises and institutions, most of these forms have tens of thousands, thousands, hundred, dollars, angles, points, so the specifications of the plate size requirements are absolutely accurate Avoid overprinting or misalignment. When the imposition is made, the film made by the imposition grid is used to mark the position of the ridge line and hole position with the "+" character line, which is convenient for overprinting during printing.

4, business form printing paper and environmental requirements

(1) Paper requirements: The moisture content of paper for commercial forms should generally be controlled at 4%-5%, and the paper pull force should be 3-7kg. Carbonless copy paper is generally used. In order to ensure product quality, the selection of materials in the production process plays a decisive role in the process of printing products. Because different manufacturers' papers have different technical parameters, especially multi-link printing, it is difficult to speculate about the negative effect of using different brands of paper on product quality. On the one hand, if multi-vendor papers are used, it is difficult to identify the problem of non-carbon paper image development after the problem has been solved. On the other hand, the paper cannot be allocated due to the fact that each manufacturer's paper expansion rate is not necessarily the same, and the printed product will be scrapped. Therefore, we must pay special attention to the selection of printed materials. It is best to select one or two manufacturers with relatively reliable quality as long-term partners, which is conducive to the process of adaptation of the two sides to paper.

(2)Environmental control: The requirements for humidity and temperature in the business form printing, especially the high humidity requirements. Usually the temperature should be controlled at 20°C-25°C and the humidity should be controlled at 60%-80%. In the case of production under the conditions of constant temperature and humidity, the finished product should be covered with a plastic bag and immediately accompanied by a page. It cannot be stored for a long time to prevent the temperature and humidity changes caused by the expansion and contraction of the paper and affect the product quality.

5, printing

Commercial computer form printing should not only control the balance between ink and ink, but also print pressure. It is necessary to clean the PS plate and blanket in time to ensure that the ink color is basically the same, and it is more important to measure its quality from the processing point of view. Because the accuracy of processing directly affects the use of computer form paper.

The processing size of a business form is an important part of quality control. It mainly manifests in the following two aspects: On the one hand, it refers to whether the length between the coupling and coupling is the same, which is mainly controlled by the paper tension control device, and is measured by a hole detection ruler. Generally, a measuring tape with a hole or hole nail length of 2m will be randomly taken to measure the tension of the paper, correct the tension in time, and keep the tension stable. The other is whether the length of the side hole size is standard. Normally, standard computer printing paper has ridge lines (as shown) to the edge of the paper is 0.5 inch, the hole diameter is 4mm, the hole edge to the paper edge is also 4mm, these dimensions should be kept accurate. Excessive or too small size can affect the use of computer paper. If it is too small, it may cause the edge of the paper to be broken. If the size of the paper is too large, it may be difficult to feed the paper or it may not be accessible. The size of the side hole is mainly controlled by a paper edge locator. Other aspects such as the depth of horizontal ridges, whether or not the perforated paper shards are penetrated, etc. will affect the use of computer printing paper, and must be strictly controlled in the production process.

6, code matching page

In the production of multi-link business forms, code matching is the last step in the production of computer form papers. The code matching is completed on the collating machine, and a multi-layer continuous form sheet is completed by the collating machine. Usually up to 8 joints. It works by rotating the sprocket to drive the table hole. In order to prevent misalignment of multipart tables, the multipart tables are pressed together by embossed teeth. Other auxiliary equipments include cutting leaflets, secret envelopes, etc. These are all based on market demand.


Source: Bison