Shanghai charging the drum surface light conductor laser printer printed material not seen in the case of light is an insulator, a neutral state, without any charge. To achieve the light conductor surface 'electrostatic latent image', must be charged in the light conductor surface, so that charge. Only then, when the laser beam is scanned on the photoconductor, light conductors are exposed point is turned on, form a beam lattice. Charged with the substrate lattice conduction form 'latent potential difference', when the photosensitive drum is rotated to the developing magnetic roller tangent position, the magnetic roller carrying light conductor and surface charge properties of the toner attraction to the opposite surface of the drum, whereby the photosensitive drum showing a toner image. To make the photosensitive drum in accordance with graphic information on the adsorption of toner cartridges should be charged for charging the photosensitive drum electrode is a tungsten wire parallel to the axis, with 5 ~ 7kV on DC high voltage, when the drum surface When tungsten is very close to the surrounding air is ionized to produce a corona discharge, the photosensitive drum to bring a charge. Positive and negative voltage from the voltage tungsten brought the decision, if the photoconductive material is selenium tellurium alloy, is positively charged photosensitive drum after the revolution of the entire surface are charged. Book printing for various paper described as follows: The most commonly used of book printing Paper: double copper paper book printing exhibition in Dongguan, a paper belonging to copper, there is still a single copper, also called single pink card. Double copper paper, although the most common book printing paper, but some people think too bright Dongguan directory book printing, which it may choose to use matte paper printed book is also very good. Matte paper except paper was dumb, other weight and price are with dual copper paper printed book is the same. There is also a common book printing paper is book paper, book paper is generally used to print more pictures more appropriate word, usually used to print product brochures, to print journals, magazines, either. Woodfree paper for color reduction effect which it did well, so a lot of time is not recommended book paper to print pictures. Another is the art of paper, more suitable art book printing and some of the design of an art studio album printing, however, generally do not remember art paper for printed products album color requirements. Printing Planning is designed for consistent theme for the way of printing, page size, print theme, or the number of paper color printing, and even select the relevant processing firms, we have to be careful and specific examination to enable the production process smoothly and complete the on-line beautifully finished. After the pressure of the rubber blanket pressure damage is commonly known as rubber, rubber pressed, is pressed color set of colors will be printed in the place is not on the network or is lost, resulting in failure of the general pressure rubber stick rubber may be caused, There may be other reasons, the general press is not very powerful, then you can loose the rubber, there is pressure reducer clean place, a little bit serious, with a reducing agent is not up, we need to remove the rubber, the rubber been pressed place mat, if the rubber is pressed very serious, pad it up, then you need to replace the rubber book printing, but sometimes some special cases, but also with some special treatment in Dongguan business book printing, for example: bite mouth edge pressed, it can also be used to "borrow rubber" approach, it is to drag a little loose points at the seams tight spots, the drag slightly borrow some seams, but the premise of dragging a little rubber is good Sometimes the place before or after the pressure is blank, then the method can also be used by the eraser. Edition overprint and plate common failures for their products, time will change the plates, installed version of the time, pay attention to seams and drag a little loose screws must be in place, insert version of the child before and around the time of control hole, To Chasi, do not leave gaps, or distorted version of the child will be installed when the screws, first drag a little tight, after biting mouth, biting mouth when, in the middle two screws can tighten, but not tight on both sides more, otherwise it will pull out of the version of the child, pull version when "pine for change, tight diagonal" and "less at most pull" principle, sometimes appear dirty version failures are generally due care Version gum or Some other causes, then we should use clean version of cream to rub the side of the plate, printing, commonly known as "rub version." Dongguan Exhibitor book printing | book printing | printing pictures from Dongguan City, often beyond packaging products factory provided. Dongguan Chang-ping beyond packaging products plant (www.dgcyp.com) strong, credible, in Dongguan, Guangdong paper printing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead beyond printers and you hand into the brilliant, for a better future!