Choose the right print imposition method to optimize the printing process

Different requirements of the printed matter, you need to choose different ways of imposition of the printing, the following are the four most common ways of imposition of the printing: single-sided; self-turning; large rolls; deduction version. Each of the four ways has its own advantages, and it is flexible to choose the actual situation.

One-sided applies to prints that only need to print on one side (mostly on the front side). Its features are: a set of printing plates, single-side printing, a bite, such as posters, stickers and so on.

Self-turning is suitable for those small-format prints that need to print both front and back. Its features are: a set of printing plates, double-sided printing, a bite, such as DM, small posters, greeting cards, magazines, books and magazines.

Rolling is also called rolling (commonly known as donkey rolling), which is a form of self-turning. Its characteristics are: a set of printing plates, double-sided printing, two bites, such as hanging flags, magazines, books and magazines.

Deduction is due to the press format, paper, cost, post-process and other factors, some of the double-sided printing products need to buckle printing, the characteristics are: two sets of printing plates, double-sided printing, a bite , such as albums, magazines, books, etc.

Printing imposition can never be underestimated. Printing imposition is the process of merging some already completed single files into a suitable printing layout on the machine. This is the most critical printing process for converting a design file into a hair file (or CTP). Proper layout can optimize the process, save costs and reduce labor intensity. On the contrary, it is less effective and more laborious.

In the printing process, we must also pay attention to the relationship between the printing pressure and the printing plate: the greater the pressure, the greater the friction. If the printing plate is subjected to excessive friction, the printing rate of the printing plate will drop, and the printing pressure can be said to be a printing plate. The primary reason for the decline in the print rate. Therefore, there are “two small principles” in lithographic offset printing, one of which is that under the premise of ensuring the normal transfer of images, the printing pressure should be as small as possible. The other is to adjust the fountain solution with the smallest amount of liquid to compete with the ink on the plate.

At the same time, we should also pay attention to the relationship between printing pressure and machine maintenance: The operation of the offset press is carried and driven by two important components. Bearings and gears, excessive printing pressure will increase their load and cause accelerated wear. During the printing process, the transmission ratio between the three rollers is required to be equal at any moment and transmitted at equal angular speed, so as to ensure the precision and correct meshing of the roller gears. After the roller gears are worn out, the next tooth is transmitted from one tooth to the other. Impact and noise will be generated. Reflected on prints, there will be vibration traces and localized friction as well as bars, halftones, and ghosts.

Each printing machine manual is equipped with detailed maintenance instructions. It is necessary to formulate a definite daily, weekly, monthly, quarterly and annual maintenance plan, and strictly enforced, so as to ensure the normal operation of equipment and improve production efficiency. Many printing companies, because of their large number of sources of living, are temporarily benefiting from the maintenance and maintenance of the equipment. This can cause fatal damage to the machine, which is not worth the candle.