High-frequency drive

Many high-end printers work this way. The advantage is that when many users share a printer, you can issue a print command without having to wait, and can save the waiting time for data communications transmission, but its price is also more expensive. Grating laser printer or dot latent image formation. Laser printer to print out the text or images, if under a magnifying glass, you will find the text or image is composed by a lot of white and black points (also known as dot-matrix graphics) ordinary dot matrix printing results. The former is a lattice arrangement by controlling the laser beam on and off, while the latter is by printing the needle hit the lattice arrangement. The user asks for more details of  green laser pointer .
The raster image is a digital image of a video, you need the printer's raster conversion processing of video data to be rasterized and converted to the printer using the raster image printing, the so-called raster image is composed by an independent point image. Such as printed in the newspaper or on the TV screen image is a raster image. Laser printers, dot matrix arrangement is composed of binary data matrix control, each point corresponds to a binary digital injection laser beam by computing controller lasers to the surface of the drum, known as "exposure, exposure point known as "pixel". To print a text or an image, you need a lot of "pixels". Therefore, the number of pixels within the unit area is more, the higher the print resolution. The parameter of  green laser pointer  cannot be revised randomly.
If a laser scanning device along the axial level surface of the drum, the injection of 300 points per inch, and the photosensitive drum is driven by the main motor in accordance with the uniform rotation of 1/300 laser printer can be per square inch 300 × 300DPI The resolution to print out the text or images. Now, high-end laser printer output accuracy can be up to 2400DPI. Formed by the pixel raster image and go through the acousto-optic modulator, high-frequency drive, scanner synchronization and optical systems together to complete. Acousto-optic modulator laser printers, we all know, TV receives picture and sound from the television signal modulation of the sound and light into electrical signals emitted by the. The user is checking the parameter of  green laser pointer .
The TV receives the signal after demodulation to restore the image and sound. The beam emitted by the laser printer laser also contains data, information conversion process is similar to the TV transmission of information process. But this process is the conversion by acousto-optic modulator. Acousto-optic modulator modulation frequency up to 30MHz or so, the characteristics of stability, most laser printers using this modulator. The working principle of the acousto-optic modulator is the Bragg diffraction characteristics of sound and light effects, and control of laser beam propagation direction. The laser beam wishes to complete the task of graphic information of the image, and graphic information modulation. The client thinks the parameter of  laser pointer     is good enough.