Common Hardware glossary! Absolutely authoritative! (Go !) 10. Printer terminology

10. Printer terminology
　　
Control Language: currently, Post Script is the most commonly used language. The standard page description language used by international organizations for the publishing industry. On a color laser printer, it precisely locates the color, make the printer output images in the field, the color displayed on the monitor, and the color scanned by the scanner to achieve better coordination and unification. Currently, the Post Script Level 2 Language is widely used.
　　
Color saturation: Package saturation refers to the degree of filled color of the output in a Dot, that is, the color coverage ratio. The color saturation standards vary for different types of printers. It is related not only to the design structure and working mode of the printer, but also to the printing media used (such as paper. For color laser printers, because they are extremely fine toner melting (or hot pressing) on the printing paper, it is easy to achieve a good color saturation. For color ink-jet printers, only the paper that meets the quality requirements can achieve the ideal color saturation.
　　
Grayscale enhancement technology: this technology is a common method to improve the output quality of laser printers. It increases the gray level (level) of the output without changing the original pixel size of the printer. This technology is mainly achieved through the printer ASIC chip, while increasing the memory capacity of the Print Controller as an auxiliary means. Because different manufacturers use different ASIC chips and different solutions, the final gray enhancement effect is very different. Among commercial products, EPSON's MGT (Micro Gray Technology) is one of the best.
　　
PCL: PCL (Printing Control Language) is a page description Language standardized by HP. When Printing in a Windows environment, you must first convert the Windows bitmap format to the PCL format code, in this way, after receiving the printer, the CPU will explain and print it. Although other companies also have their own print control languages, their applicability is not as good as that of PCL.
　　
Print interface: the print interface, which was used in the early days as a Parallel interface named SPP (Standard Parallel Port) until the high-end 486, this multi-year consistent interface was replaced by EPP (Enhanced Parallel Port: Enhanced Parallel interface. Since EPP is more than 10 times higher than SPP, it has been popularized quickly. EPP not only meets the needs of high-speed printer transmission, but also is compatible with the SPP port. Now, another high-speed parallel Port-ECP (Enhanced Capabilities Port: Enhanced high-energy interface) is in use. Due to the support of the DMA (DirectMemory Access: Direct Memory Access) mode, it has a good development prospect.
　　
Color Resolution enhancement technology: this technology can improve the performance of color series printers in three aspects: one is to improve the Edge Effect of the image; the second is to improve the gray-scale quality of the image; the third is to increase the color level. Due to the different types of printers, the color Resolution enhancement technology varies with the color inkjet printer, the color laser printer, and the thermal conversion printer. In addition, due to paper, ink, toner and other factors, when the resolution is increased to a certain extent, it is half the effort to pursue DPI. This is especially true for color printers. Because for color output, more points per inch may not necessarily produce better output results. In this case, other related factors (such as color saturation) it plays an important role.
　　
Resolution enhancement technology: after abandoning the dedicated resolution enhancement card, some professional vendors have successively launched this technology. Its core is to improve the output quality without increasing (or increasing) the hardware cost. This technology can improve the printing effect. Early resolution enhancement technologies include HP REt, EPSON RITech, Apple Fine Print, and Destiny EET. Other practical investments include Canon's AIR, EPSON's MGT, and NEC's AMB. After abandoning the dedicated resolution enhancement card, some professional manufacturers have successively launched this technology. Its core is to improve the output quality without increasing (or increasing) the hardware cost. This technology can improve the printing effect. Early resolution enhancement technologies include HP REt, EPSON RITech, Apple Fine Print, and Destiny EET. Other practical investments include Canon's AIR, EPSON's MGT, and NEC's AMB.
　　
Resolution: it is an important technical indicator for printers. Since it has an important impact on the output quality, the printer is usually measured by the Resolution level. The unit of measurement is DPI (Dot Per Inch ). It indicates the number of printable points per inch. For example, the resolution of a printer is 600 DPI, which means that the output is printed at 600 dots per inch. The higher the DPI value, the finer the print output effect, the more realistic the output time, of course, the more expensive the price. Color Resolution enhancement technology this technology can improve the performance of color series printers in three aspects: one is to improve the Edge Effect of the image; the other is to improve the gray-scale quality of the image; third, increase the color level. Due to the different types of printers, the color Resolution enhancement technology varies with the color inkjet printer, the color laser printer, and the thermal conversion printer. In addition, due to paper, ink, toner and other factors, when the resolution is increased to a certain extent, it is half the effort to pursue DPI. This is especially true for color printers. Because for color output, more points per inch may not necessarily produce better output results. In this case, other related factors (such as color saturation) it plays an important role. After abandoning the dedicated resolution enhancement card, some professional manufacturers have successively launched this technology. Its core is to improve the output quality without increasing (or increasing) the hardware cost. This technology can improve the printing effect. Early resolution enhancement technologies include HP REt, EPSON RITech, Apple Fine Print, and Destiny EET. Other practical investments include Canon's AIR, EPSON's MGT, and NEC's AMB. After abandoning the dedicated resolution enhancement card, some professional manufacturers have successively launched this technology. Its core is to improve the output quality without increasing (or increasing) the hardware cost. This technology can improve the printing effect. Early resolution enhancement technologies include HP REt, EPSON RITech, Apple Fine Print, and Destiny EET. Other practical investments include Canon's AIR, EPSON's MGT, and NEC's AMB.
　　
Ppm (pages per minute): The number of output pages per minute is an important indicator for Color Inkjet Printers, laser printers (including color lasers), and thermal conversion printers to measure the output speed. The ppm value refers to the average speed of continuous printing. If only one page is printed, you need to add the homepage push time. Specific to a type of product, because the output object (with plain text, with color text and with true color photos, coupled with different coverage rates) is different, in addition, the testing standards of the manufacturers are not uniform, which leads to a large gap in ppm indicators. Since this ppm can only serve as a reference value. PCL (printing Control Language) is a page description language standardized by HP. When printing in a Windows environment, it must first convert the Windows bitmap format to the PCL format code, in this way, after receiving the printer, the CPU will explain and print it. Although other companies also have their own print control languages, their applicability is not as good as that of PCL. The print interface is a parallel interface named spp (standard parallel port) in the early days. Until the high-end 486, this multi-year consistent interface was called by EPP (enhanced Parallel Port: enhanced parallel interfaces. Since EPP is more than 10 times higher than spp, it has been popularized quickly. EPP not only meets the needs of high-speed printer transmission, but also is compatible with the SPP port. Now, another high-speed parallel port-ECP (enhanced capabilities port: enhanced high-energy interface) is in use. Due to the support of the DMA (directmemory access: Direct Memory Access) mode, it has a good development prospect.