High cost performance of green laser pointer are also the big selling point

In general, the text given with less toner to print the surface is very rough. Rigorous testing, you can use a particular tape to stick to print graphics, and then peeled off the blackness change of the detected graphics. The formation of the ghost is after the completion of the first imaging because of the sensitive surface of the text, graphics Unequal charge region still remains in the charge region can be caused by a latent image, so that the next time imaging, you can still see the phenomenon of latent image. The electrical resistance of the toner directly affect the ghosting apparent. Ghosting, ghosting, but different from ghosting. Ghosting due to machine failure phenomena, such as the fuser assembly roller fluoride layer is destroyed, causing sticky powder, resulting in ghosting. The perfect parameter and high cost performance of green laser pointer are also the big selling point.
In addition, the print media will also affect the ghosting, like sulfuric acid paper than normal printing paper is more prone to ghosting, just printed paper will be prone to ghosting than the unused paper. Talking about the above six factors that affect print quality if starting from the print proofs appearance point of view, we have to consider the brightness of the toner, ie, print proofs words black shiny. Printer detector failure analysis and repair. Out of paper detector (PE detector). The detector for the optical coupling device mounted on the feed slot, the function is to detect the printer has paper. Paper, light-emitting diode reflection of light by the paper to reach the photocell, it turns on, the +5 V signal is sent to the CPU.  green laser pointer includes the presentation, museum, inspection and so on.
If the user does not printer paper or paper have been exhausted, LED tube light can not reach the phototube, so that cut-off, OV signal sent to the CPU, the user receives an alarm buzzer and out of paper light. The detector is out of paper error-prone, but in general is also very easy to solve, STAR generic printer, the light-emitting surface of the detector and by the smooth generally placed upward at an angle, and easily covered with dust, blocking the spread of glossy paper, resulting in photoelectric tube constant deadline. The following describes one case of failure. Fault phenomenon: a the AR3200 printer, feed, each time only on paper a few centimeters. Continuous paper loading / back paper / paper, although on paper, but the pressure of the paper lever is not lifted, the online light is not lit, the printer still reported out of paper. Laser beam wavelength of green laser pointer  is 532nm.
First of all, the process of the the AR3200 printer feed as follows: (1) short paper, the paper sent out of paper above the detector, the detector to confirm the paper after the next process, if the detector is that the paperless movement of the feed end. (2) to grow in the paper, press the paper lever lift the paper to print position, according to the paper Tau empty set, and online ready to print. In the failure, it is clear that repeatedly executes the process (1), that is due to the printer to determine the end of the paperless and therefore can not line print. Fault a clear through the rest of the work is very simple wipe. Should be noted that the non-flat push STAR printer, you generally need to remove the back cover before they can wipe, and should then take the paper to convert the chain, expanding the distance between the roller and the detector in order to operate. This kind of green laser pointer has been attracting more and more attention of more and more customer.
Should be noted that the detector false positives out of paper, not necessarily caused by the error of the detector itself. The use of color or the existing character of the printing paper, is able to absorb more light, the same phototube conduction, not online. There are three ways you can choose: Modify the EDS set out of paper to detect invalid (setting method, see the random operation manual). The printer will unconditionally online printing, regardless of whether the paper. However, doing so has one drawback is that when the user exhausted paper, the printer will continue glue stick meaningless print. Therefore, it is generally not recommended to use this feature. The energy of the laser beam emitted by   laser pointer   can be concentrated within a very narrow range.