The electronic books can be read if using green laser pointer

Good photoconductivity. Photoconductivity is an important indicator of the drum, it directly affects the print quality is good or bad. Because the drum continuously charging and discharging cycle process requires charging potential rise faster than the application of surface potential Saturated potential higher; otherwise stagnant initial potential also affect the printing quality. After charging the photosensitive drum to a small dark decay, or remain to the surface potential, potential difference can not form the necessary latent image. After exposure of the photosensitive drum discharge faster that light fades quickly. Discharge more thorough the better. Because the number of remaining potential, not only affects the latent image contrast, will bring prints of the "bottom ash." The customer no longer needs to walk towards the projection screen in person due to using of green laser pointer.
Resistance to fatigue. Drum in use, the printer should be recharged, which should have good fatigue resistance, the required life time, the print quality does not decline because of continuous use. Photoconductive drum better stability characteristics, should meet the requirements of continuous use. Laser printers use a drum, usually three-tier structure. The first layer is the aluminum cylinder (conductive layer), the second layer on the surface of the cylinder is vacuum evaporation method, coated with a layer of photoconductor materials (photoconductive layer), the third layer is the outside of the photoconductive material and then plated layer of insulating material (insulating layer). Some of the drum in order to better charge, in the photoconductive layer and the aluminum conductive layer of the middle, add a layer of superconducting material plated to make the charge more quickly released. The consumer can take quality of green laser pointer into account when buying green laser pointer.
The surface of the insulating layer of the drum, one to improve the wear resistance, increased service life; the second is for the photoconductive layer to provide protection against wear and tear of light conductor to keep the light conductor photoconductive properties. Conductive layer of aluminum tube with a laser printer is connected to ground, so that the rapid release of potential exposure. It is a very high precision cylinder, in the process of operation, to maintain constant speed operation and to maintain a uniform charge. Data Translation: To print the full text, image, in addition to its function laser printer, it must also be printed by the computer to the contents of that text or image processing software with text or graphics processing software, compiled into a computer language with a certain format. Its contents are described in the decision by the computer editing software, and laser printer does not have any relationship. green laser pointer can remotely turn over the pieces of page of the documents in computers.
When we selected a printer command, and press OK to print button, the computer the edited data sent to the printer through the printer interface, the printer driver to print to explain the content and convert it into a language the printer can be identified (and called printer language), according to their own language by the printer prints out the text or image has been edited. Different models of laser printers, print languages, using different drivers. Of course, there compatible printer driver. Now the production of laser printers, the language commonly used standard PCL5 or PCL6 print languages. Data transmission: communication between printer and computer transmission port there are many more common is the "serial" or "parallel." EP P / ECP (Enhanced ParalleI Port / Extended Capabilities Port) called Enhanced / Extended Parallel. Distance that the laser ray of green laser pointer can reach is no less than 200 meters.
"Serial" As the slow, seldom used. Others such as the SCSI interface, due to speed, mostly used in more high-end printer. Some printers use video interface (VDO) methods and computer communication, communication with other interfaces in that it is not transmitted data, but the laser beam, faster. Its data is also a "video conversion card" to complete, but it is a total Hang with computer memory, requires a computer has enough buffer space. General typographic use of such interface, the printer industry more. Some high-end printer with a variety of interfaces, which can take more than one computer. Now the production of many printers with faster USB interface. We can clearly visualize a bright straight laser beam of green laser pointerpiercing into the sky.