The use description of green laser pointer is given in the working instruction

The inspector is checking the content of acceptance standard of  green laser pointer .
TV, film is synthesized by the self-luminous colors to its synthesis rule is called "additive principle", three colors of red, green, blue, secondary color as "white." Printing, coating is formed by absorbing some of the light color, so the rule is called "subtraction theory", three colors of cyan, magenta, yellow, secondary color is "black." Color laser printers color in the end is how to synthesize it? HP's technology, for example to do an analysis. ImageRet2400 HP Color Layering technology is the technology used. If the OK to print the basic resolution of 600DPI, 600DPI resolution images can be calculated, the pixel spacing between the center of the 42 micron. HP uses a diameter of 5 microns Ultra Precise ultra-fine toner, in fact, the effect can be achieved 2400DPI, 2400DPI resolution when the distance between the center pixel of about 10 microns. In other words, if the final result is 600DPI print color pixel resolution, then a pixel, you can use 16 × 16 个 cyan, magenta, yellow and black toner particles plus four blank to modulation of the pixel color, because the human eye is unable to distinguish the color of these fine particles, so the human eye can see is the blending of the total effect. The use description of  green laser pointer  is given in the working instruction.
This technology can provide many kinds of colors in the end, calculated permutations and combinations in a classic example: There are cyan, magenta, yellow, black, white five colors of an infinite number of balls in the jar-packing in five, and now free to work out from 16 balls into an empty jar, the total would work out how many possible outcomes? The calculated value is ImageRet2400 technology can theoretically achieve the number of colors, according to the manufacturer's argument is that hundreds of thousands. If at the present level of processing of nanomaterials, carbon particle diameter of 5 nm is not a problem, then the existing 5-micron toner particles can be separated along the diameter of 1000 times, you can imagine this bold theory of laser printers technology with color vision, of course, fine particles to a certain degree of recognition for the human eye is completely lost to thin down the significance. Whether it is black and white laser printer or color laser printer, the basic working principle is the same, they have adopted a similar electrostatic copiers photography, prints the contents into a drum on the lattice in units of pixel bitmap image, and then transfer onto the printing paper to form the content. The director is directly in charge of centralized management of drawing of  green laser pointer .
The only difference is that with the light source copiers, copiers using ordinary white light, and laser printers use a laser beam. Below we will be the most simple black and white laser printer, for example, details of the laser printer works. From a functional structure, laser printers print engine and print controller is divided into 2 parts. Laser printers print engine from Canon, Minolta, Xerox, Brother, Samsung, Hitachi and other manufacturers offer a few engines.