Printers have made our life more convenient, but many printers will have the problem of wrinkled and uneven paper or no paper feeding after a long time of use. Now let me introduce the main reasons why the printer does not feed paper. I hope I can help you.
The reason why the printer does not feed paper
1. Too much printing paper is put in. First check whether the installation of printing paper meets the standard, for example, whether the loading position has exceeded the arrow mark on the left guide rail of the printer. If it exceeds the mark, the printing paper must be reduced.
2. Foreign matters are blocked. Check whether there is any foreign matter blocking inside the printer. For example, if there is paper jam in the printer, it will lead to no paper feeding. If there is any foreign matter, it must be removed. When removing it, be sure to turn off the printer power first, and then carefully remove the foreign matter. If you want to take out the paper clip, you must slowly pull out the paper clip along the paper output direction. After taking out the paper clip, you should also check whether there are residual paper fragments, and ensure that the paper fragments are also removed.
3. The printing paper is wet. If the paper is stored for too long, the printing surface may not be dry.
4. Whether the ink is used up. The indicator light of black ink cartridge or color ink cartridge flashes or lights up, indicating that the ink is about to run out. If the cartridge is empty, the printer will not be able to feed.
Methods of printer purchase
I. resolution
Resolution is an important technical index to measure the quality of printer. Printer resolution generally refers to the maximum resolution. The greater the resolution, the better the printing quality. Because the resolution has an important impact on the output quality, the printer is usually measured by the resolution. The unit of calculation is DPI (dot per lnch), which means the number of points printed per inch. For example, a printer's resolution is 600dpi, which means that its printout has 600 dots per inch. The higher the DPI value, the finer and more realistic the printout effect. Of course, the longer the output time and the more expensive the price.
The resolution of general needle printer is 180dpi, up to 360dpi; The ink-jet printer is 720dpi, the slightly higher is 1440dpi, and the recently launched ink-jet printer has a high resolution of 2880dpi; The laser printer is 300dpi and 600dpi, and the high one is 1200dpi or even 2400dpi. Dye sublimation heat transfer printer with a resolution of up to 1800dpi. Reasonably speaking, the resolution should be the number of distinguishable points (lines) that can be achieved within the unit length (width). Only in this way can we show the fineness of the printed text. If a printer can print 10 distinguishable lines within the width of LMM, instead of being dark, the resolution of the printer can be called 10 lines / mm, which is equivalent to 254dpi. However, the current concept of resolution is "the number of points (lines) that can be printed within the unit length (width)". It does not emphasize whether it can be distinguished visually, that is, there is no "discrimination". This is just a mathematical "decomposition", regardless of the size of the physical point. Such "resolution" is actually point density. Another one inch long horizontal line is printed horizontally by a printer with 360 consecutive points, that is, the horizontal resolution of the printer is 360dpi. Even if the diameter of each point is 0.2mm (the needle diameter of 24 pin printer), it can be so commensurate. If the point diameter is only 50 μ M inkjet printer, printing with the same DPI, the effect is very different.
In view of this situation, it is particularly important to remind users that even under the same resolution index, the printing effects of printers of different products will vary greatly even if their functions are the same. As mentioned above, the print quality is related to the single point size. Furthermore, the printing quality is also related to the color saturation of a single point, the point and positioning accuracy, and the shape of the base to point.
II. Printing format
Print format is an index to measure the size of the text and map page output by the printer.
In needle printers, the width of a row is generally given, which is expressed by how many characters (characters / rows or columns / rows) can be printed in a row. Commonly used printers are 80 columns and 132 / 136 columns.
Laser printers are usually expressed by the specification of single sheet paper. Its printing format can be divided into A3, A4, A5 and other format printers. The larger the printing format of the printer, the larger the printing range.
Inkjet printers are also commonly represented by the specification of single sheet paper. Generally, the printing format of inkjet printer is A3 or A4. Some inkjet printers also use line width to represent the printing format.
III. home page output time
This is a term to be used by the laser printer, that is, how long it can output the first page after executing the printing command. The general laser printer can complete the output of the first page within 15 seconds. The test benchmark is 300dpi printing resolution, A4 printing format, 5% printing coverage and black-and-white printing.
IV. media type
The type of media the printer can print.
The media that the laser printer can handle are: ordinary printing paper, envelope, projection film, postcard, etc.
The media that the inkjet printer can handle are: plain paper, inkjet paper, glossy photo paper, professional photo paper, high gloss photographic film, glossy card paper, T-shirt transfer medium, envelope, transparent film, banner paper, etc
The media that the stylus printer can handle are: ordinary printing paper, envelope, wax paper, etc.
V. paper thickness
It gives the maximum thickness of paper that can be printed. Unit: mm. 9、 Loading capacity
Paper loading capacity refers to the number of single sheets of paper that can be loaded at one time. The capacity here refers to the standard paper input capacity provided by the printer, including the total capacity of multi-purpose carton and standard input carton.
Vi. character type
Character type refers to which characters (including Chinese characters) can be output and printed by the printer and which fonts can be used for these characters.
VII. Input data buffer
In order to improve the speed of the printer, the input data buffer should be large enough. The buffer area of 24 pin printer is generally about (2 ~ 40) KB, and it can also be as large as 128KB; The inkjet printer is between (10 ~ 64) KB; The laser printer is between (1 ~ 8) MB, and some can be expanded to 66mb.
VIII. Return time
It refers to the time required for the character cart to return from the right end position to the left end initial position (home) after the serial printer has filled a line of characters (Chinese characters). The longer the row width, the longer the return time. The shorter the carriage return time, the faster the printing speed.
IX. line feed time
Refers to the time required for the serial printer to change from the current print to the next line. The greater the line spacing, the longer the line wrap time. The shorter the line feed time, the faster the printing speed.
X. printing method
1. Graphic printing method
What the computer sends to the printer is the dot matrix coding information of Chinese characters. The way of printing with dot matrix coding is called graphic printing. Printing Chinese characters in this way requires 72 bytes (24x24 dot matrix) for each Chinese character, so the printing speed of graphic printing is slow.
2. Text printing method
The dot matrix information of Chinese characters is no longer sent from the computer to the printer, but the internal code of the national standard. The printer takes out the dot matrix information from the Chinese character library for Chinese character printing. The internal code of each Chinese character only occupies two bytes, so the printing speed is fast by text printing.
3. High speed printing mode
High speed printing is used for grass (i.e. draft) structure printing. In order to adapt to high-speed printing, the printing quality of the factory shall be appropriately reduced.
4. High density printing mode
High density printing is used for writing structure printing. Reduce the printing speed, but the printing quality is high.
Xi. Graphic printing mode
Graphic printing mode refers to the way that dot matrix graphics can be printed horizontally with dot density.
XII. Network functions
Network function refers to whether the laser printer supports common use in the local area network. The laser printer supporting this function can not only help users improve efficiency, but also save users' expenses in purchasing equipment. As laser printers are mainly used in companies, enterprises or institutions, the performance of laser printers in network function support can not be ignored. The so-called network performance mainly includes the processing speed that the laser printer can achieve when printing on the network, the convenience of the installation and operation of the laser printer on the network, the compatibility with other network equipment, and the network management and control function. When choosing a laser printer with network function, we should try our best to choose a laser printer that can be compatible with various devices and can support various network operating systems as a network printer.
1. Replace the copy paper;
2. Please check whether the paper take-up wheel of the machine is aging. If it is aging, please replace it;
3. Reach into the paper inlet by hand and touch the plastic paper guide to make it smooth! At this point, the machine is restored.
The common paper jam faults of laser printer are as follows:
1. The paper card has just entered the paper feeding roller without entering other printer groups. In this general state, the front end of the paper cannot be seen, so the back end of the paper can only be pulled out slowly perpendicular to the direction of friction.
2. When the paper enters the single group of the printer, the general laser printer will set a guiding system at the front end of the printer to make the paper reach a certain accuracy. In this way, the single group will generally leave a switch type thing so that the paper can be taken out smoothly when the paper is jammed. Open the switch according to the instructions, then pull the front end of the paper and take out the paper slowly.
3. When the paper is pressed by the photosensitive drum, take out the toner box first, and then pull out the paper (note that the things printed on the paper have not been heated and fixed on the paper, so pay special attention not to dirty your hands).
4. The paper enters the fixed heating system, which depends on the situation. First of all, if the paper enters a small part, pull the back end of the paper and pull it out slowly, because if it is pulled out from the front end, a lot of unheated fixed toner on the paper will stick to the surface of the heated film and roller, which will affect the next printing, resulting in blur, afterimage and other problems.
Secondly, if the paper enters a large part, you can only hold the front end of the paper and slowly take out the paper according to the running route of the paper. The adhesion caused by the carbon powder at the back end of the paper to the heating film and roller can only be eliminated by printing cleaning pages or several blank pages.
5. In addition, the paper card is in the discharge system. The method is to pull the front end and take it out slowly. That's all for the basic situation. It should be emphasized here that when taking out the paper jam, pay attention to that the mechanical parts inside the printer, such as connecting rod, gear and other parts are relatively precise, and large actions may cause damage.
Some serious problems such as loud noise and poor printing quality will occur. The basic principle is to take the paper as far as possible according to the direction of paper progress, because most printers do not consider reverse operation in design. Only under extremely special circumstances, the paper will be taken in a reverse way.