Color Printing by black/white laser printer

As we all know, when the toner for laser printers is used up, the manufacturer principle is to change the toner cartridge or powder warehouse. Most of the users can add powder to save money. But do you know? You can also change "waste" value to color laser printing.
We have found three old toner cartridges or powder warehouses to clean the residual powder. We can take them apart and wash them with water. But we can clean the drums, fixed film or fixed film Rollers with delimiters. Prevents moisture in dead corners. They are loaded with green, red, and yellow colored powders and marked with the color of the toner outside the box for future convenience. In addition, there are four sets of original black toner cartridges. Next we can print it in color.
Color pictures to be output are processed into c.m.y. K color Slices Using Photoshop and other software. Color Separation is also very convenient for some typographical software and can also be output through the network as needed. When different color slices are output, replace them with the toner cartridges of the corresponding color and print them four times on the same piece of paper to get the color picture.
Pay attention to the following points for better printing:
1. First, the grayscale effect of the printer image, that is, the gray level, must be smooth and uniform, and there should be no line breaks. Some printers claim a gray scale of 128, and the effect is unsatisfactory. Instead of looking at indicators only, it depends on the actual results. Of course, the resolution must be larger than DPI.
2. Print and locate again. Whether it is a 'u' or 'l' paper structure, you need to keep about 20 pieces of paper in the tray for positioning. It is easier to locate the 'U' structure, that is, to mark the rear of the paper and locate the position when printing repeatedly. To prevent the paper from being misplaced, you can place a proper paper wheel or a few appropriate magnets on the paper. For the 'l' structure, open the chassis and paste a few moderate plastic fenders at the appropriate position. It can be used for positioning when paper is placed without affecting paper delivery.
3. Color Printing sequence: blue, red, yellow, and black.
Print Quality. I won't change it if I use an inkjet printer of more than 4 thousand yuan. I changed it from an old A3 printer of more than yuan. Especially on ordinary paper, the second is no slower than the ink jet printer, and the third is lower than the ink jet printer. Value for money.
Experience is not obvious when printing a single image. However, if multiple images are single or single, you can avoid too frequent drum change. After processing a color, you can change the color and drum. In this way, the processing speed is more than 10 minutes. For simple text color, you only need to print the text separately, the operation is very simple, but the color is limited to green, red, yellow, black, too monotonous. If you only use one or two colors, such as red files, you can use the following colors: Green, product, yellow, and red. It is not suitable for full-color text printing of special characters or extremely fine lines, which is caused by positioning and outlets. Authentic color laser printers cannot avoid small characters caused by outlets. Text of common size can be printed in full color.
This method is used on a variety of printers, and the change of powder should be matched with the drum. Similarly, color printing can be performed on a dot matrix printer.
Zhou zhongming