Introduction to the hottest image information outp

Introduction to image information output equipment

I. laser printer

laser printer is the product of combining laser scanning technology with electronic Phototypesetting Technology. The development of laser printer originated from Xerox company in the late 1960s. The real popularization and promotion began in the early 1980s, and the production and development of laser printer became rapid in the 1990s, becoming the mainstream product in the printer field

laser printer, also known as laser printer, is one of the main output devices of prepress system. It is widely used in prepress system. It is mainly used to output monochrome proofs for proofreading the size and position of words and images. Laser printer is also used for the output of originals in light printing process and office automation

laser printer mainly consists of two parts, namely, laser printing optical system. It is reported that the optical system of laser printing is composed of laser, acoustooptic modem, polyhedral prism, focusing grating, character generator, etc. The electrophotographic transfer system is composed of photoconductive drum, charging electrode, power dissipation electrode, transfer electrode, cleaner, developing magnetic brush, heater, paper feeding roller, etc

II. Inkjet printer

inkjet printer is a graphic output device that forms an image by controlling the deposition density of fine ink droplets ejected from the nozzle on the substrate. Its most prominent feature is that it is easy to realize colorization. It has developed rapidly in hard copy color output equipment and is widely used in color drawing, color image printing and so on

inkjet printer is a new printing method, which directly sprays ink droplets on recording materials without passing through intermediaries. From the working principle of inkjet printing technology, it can be divided into continuous inkjet mode and random inkjet mode. The difference between these two ink-jet printing technologies is that: the continuous ink-jet mode can continuously spray ink drops. When not printing, the sprayed ink is not stored in a special abdominal cavity, which is filtered and re injected into the ink tank for reuse; The random inkjet method is relatively simple. It has no complex circulation system such as jet pump, closed valve, pressure regulator, filter, etc

III. laser Imagesetter

the working process of laser Imagesetter is generally closely combined with rip and automatic film processor. Rip converts the layout information processed at the front end into bitmap information with the corresponding output resolution of the laser Imagesetter, transmits it to the laser Imagesetter, and drives its recording device to expose on the film. After exposure, it is sent to the automatic film processor or tensile machine for development, fixing A series of post-treatment such as washing and drying

laser phototypesetting output refers to the use of a laser Phototypesetter to accurately record the produced page on the photographic film with a small laser beam. It is the finished product output process of the system. Among the various output devices of the computer, the laser Imagesetter has the highest output speed and is also the most expensive device in the system. The operation is also more complex and professional, which is generally in the charge of a specially assigned person. It is very important to master the correct use and maintenance methods of the imagesetter and the film development methods

IV. direct plate making machine (CTP)

CTP was first applied to the electronic engraving gravure printing cylinder of gravure printing in 1981. It can only be used in the printing of newspapers and commercial forms. Since the PS version was applied to the offset press in the 1950s, the offset plate making process has been the process of photosensitive film, plate making and printing. This kind of technological process forms the point loss in the plate making process due to the use of point light exposure. In order to improve the point reproduction rate, we must pay attention to its protection and maintenance in the process of ordinary use, and speed up the plate making speed. In the late 1970s, some companies in the United States and Japan began to develop CTP systems and plates based on advanced powder metallurgy technologies such as injection molding, warm pressing, and spray molding. Primary products were formed in the 1980s, and CTP technology basically formed a relatively perfect system in the 1990s. With the rapid development of computer technology and the improvement of the properties of photosensitive and heat sensitive polymers, CTP system is gradually used in business and magazine printing

with the rapid development of computer technology and the improvement of the properties of photosensitive and heat sensitive polymers, CTP system is gradually used in business and magazine printing. CTP technology has the advantages of fast plate making speed, saving film and prepress cost, low production cost, labor saving, short plate making time, dot sharpness and good printing quality

reprinted from: printing industry