Integration of the hottest digital workflow and pr

Integration of digital workflow and printing production (III)

implementation of digital workflow

it can be seen that digital workflow includes two parts: graphic information flow and control information flow mentioned above. Graphic information flow solves the problem of "what to do"; Controlling information flow solves the problems of "how to do" and "what to do". The key is that these two kinds of information are digital and can be stored, recorded, processed and transmitted by computers

we illustrate the difference between non integrated digital work and complete digital process through figure 1

as shown in Figure 1, customers provide graphic originals, layout and production requirements. After receiving these non digital information, the printing unit will carry out text input/typesetting, image scanning input/processing, and prepress processing and production of graphics. According to the customer's requirements, after digitizing the information that forms multiple pages, the multiple pages are formed into a printed whole page, and then the postsript or PDF information of the layout description is generated with the help of the printing function. After rip processing, the whole page of color separation graphic records are output to the film or printing plate. When the customer agrees to officially print, batch printing begins

during batch printing, operators rely on experience to adjust and control the ink volume in each ink area of the printing machine; If you want to get the basic data of ink area adjustment of the printer before printing, you must scan the printing plate with a special device before printing to obtain the ink volume statistics of each ink control area, so as to obtain the correct ink volume control on the printer. 4. After adjusting the hardness tester, the printing is completed, and the printed products are obtained through folding, cutting, binding and other steps

in this non integrated digital prepress process, although the graphic information is digital, and the ink control on the printing machine can also be digital to a certain extent, the production control information is still scattered and non integrated. The pre press, printing and post press processes are not closely related

customers provide graphic originals, layout and production requirements. After receiving this task, the printing unit will determine the appropriate reproduction process route and allocate printing and post press processing equipment according to the basic characteristics of printing products and customer requirements

the process of prepress processing is roughly the same as that described above. After the whole page is assembled into a large version, the information about the folding, cutting, binding, and alignment of the regular lines of the printed matter has been determined. After rip processing, the recorded information of each printing plate is obtained. This information can be used in two ways: first, it is used for film or plate recording, and second, it can be used to calculate the basic ink control data of each ink area of the printing machine. Thus, the ink quantity control data information is obtained, and the step of printing plate scanning is omitted

after the production of the printing plate, in the adjustment stage of the printing machine before the formal start of printing, the multi-color overprint adjustment can be carried out by using the registration rule line position data generated in the prepress stage; At the same time, the ink volume adjustment data obtained can be used to adjust the ink volume of each ink area of the printing machine without repeated test printing, so that the printing machine can quickly enter the formal printing state, which not only saves materials but also shortens the time consumed

after printing, different standards correspond to different test items. Before post press processing such as cutting, folding, matching and pasting, you can call the folding hand, cutting and other information that has been generated in the pre press stage to pre adjust the folding machine, cutting machine and binding machine, so that all kinds of equipment can quickly enter the working state, carry out post press processing and production, and finally obtain the finished printing products

from the above and due to the reduction of fuel consumption or the increase of load, it can be seen that in the integrated digital workflow, a variety of equipment control and preset status information required for printing and post printing have been obtained in the pre press stage. As long as these information is accurate and can be smoothly transmitted to printing and post press equipment, these equipment can quickly enter the normal working state of a product. This section 5 on the whole According to the description of the shape and fracture characteristics of the experiment, the adjustment time is about to reduce and avoid operating things, which is conducive to the improvement of the quality of printing products. It is these digital control information that connect the prepress, printing and post press links to form a complete production chain