Study of Color Business Printing Paper (I)

Today, black-and-white printers have become popular in homes and offices. Color business printers have become the trend of development. Whether in the digital printing of business office or home, color printing is becoming more and more popular because color is a powerful, powerful and attractive expression tool with strong visual impact. . Especially in business, color can convey relevant information more clearly and effectively by emphasizing some important details. Some studies have pointed out that color can increase the readership of information transmission by 40%, improve people’s understanding by 75%, and increase their learning ability and interest by up to 75%.

In the black and white document and image output process, although the inkjet printer has many advantages, such as its own lower price, better image output, but also many deficiencies, such as a simple text printing effect is poor, the printing consumables have a short life cycle ,high cost. Compared with ink-jet printers, laser printers have obvious advantages in terms of text effects and printing costs, especially in terms of character accuracy, and print effects are comparable to those of factory printing; therefore, they are used in homes, businesses, and business offices. With booming development, black-and-white laser printers have firmly monopolized the document printing market and have shown a strong upward trend. The output media of the black-and-white laser printer is mainly paper. There are no special requirements for such paper, but it requires good paper formation, high whiteness, and flatness of the paper. Currently, computer paper and static electricity are used more often. Copy paper can also use plain printing and writing paper.

On the contrary, in the field of color printing, color inkjet printers are widely used due to their low prices and the use of water-based inks, which don't emit charged toxic particles during printing and endanger people's health. For color laser printers, despite their high image resolution and good color stability, the color density and fidelity of the print are difficult to match with color inkjet printing. Therefore, inkjet printers occupy a dominant position in color image output.

Inkjet printing technology entered the Chinese market for more than ten years, but it has developed rapidly. It has been widely used in office automation, digital photography, advertising production, computer graphics, CAD renderings, geographic information systems, remote mapping, and printing proofing. .

Based on the principle of color inkjet printing, the performance of printing paper for color ink jet printers is high, and ordinary ink jet printing paper cannot be used. On the contrary, the requirements for color laser printing paper are not very high. Only waterproof, moisture and weather resistance are required. The need for special color laser printing paper requires specialized production.

2 classification of color business printing paper

Due to the continuous development of printing technology, a wide variety of printers are used for color documents and image output. According to the principle of color printing, full-color printing methods can be roughly divided into ink-jet printing, color laser printing, sublimation printing, and thermal printing. . Correspondingly, according to the output mode and output requirements of the color printing apparatus, the color business printing paper can be subdivided into color inkjet printing paper, color laser printing paper, thermal printer paper and thermal sublimation printing paper.

2. 1 color inkjet paper

There are many types of ink jet paper, but the color ink jet paper is different from ordinary paper. The color ink jet paper needs good ink absorption and ink fixation, can absorb water-based ink, and can not spread the ink to the periphery. In order to completely maintain the original color and clarity. The printing performance of the color ink-jet printing paper is mainly determined by the structure and function of the ink-absorbing layer, not only to quickly and evenly absorb the ink, to prevent the occurrence of blemishes, capillary phenomena and strikethrough during the ink drying process, but also to ensure good Print quality, color reproduction, good dot roundness, high printing density, high color density and color intensity, especially high-gloss paper-grade color inkjet printing paper, require clear print images, printing density High, the level of silver salt photos can be achieved in terms of vivid colors, detail levels, and color fastness.

Color ink-jet printing paper can be divided into ordinary color ink-jet printing paper, matte coated color ink-jet printing paper and glossy cloth color ink-jet printing paper, in which gloss-coated color ink-jet printing paper has the best performance, and the price is also The highest, with a high gloss, high whiteness of the paper, good ink absorption, printing image hierarchy, color saturation, strong color expression, similar to the photo-level image effect, but its absorption of liquid speed and With reduced water resistance, it is the highest grade inkjet printing paper and is widely used in the commercial field.

2.2 Color Laser Paper

Color laser printers are low-cost, high-efficiency, high-quality color print output devices. However, compared with color inkjet printers, color laser printers print images are not very good performance in the overall color saturation of the picture is dark, less transitional levels, and more close to prints than silver salt photo-level image effects. In addition, a layer of silicone oil is always attached to the print surface of the output of a conventional color laser printer. The reflection of the entire screen is strong.

The imaging principle of a color laser printer is similar to that of a black and white laser printer. Laser scanning is used to form a charge latent image on a toner cartridge. Then the toner is adsorbed and the toner is transferred to the printing paper, except that the monochrome laser printer has only one type. Black toner, while color laser printers use toners of yellow, red, cyan, and black colors. Based on this, the performance requirements of color laser printing paper are not very high, as long as there is high whiteness, the paper surface is flat, the difference between the two surfaces is small, and the loss of the printing equipment is less. However, if it is to be used for the production of high-end renderings, tenders, exquisite brochures, and certain special uses for waterproofing and moisture-proofing, the base paper should be processed to obtain good color printing effects and corresponding functions.

2. 3 color thermal paper and dye-sublimation printing paper

Thermal-sensing printing is the use of specially-treated heat-sensitive special-purpose printing paper, an advanced technology that incorporates silver salt photography and thermal recording. The printing process does not require ribbon and ink. The printing paper itself contains yellow (y), magenta (M), and blue (C) dye layers. When the print paper is exposed to the thermal energy of the print head and the UV fuser lamp, the color is released.

Sublimation printing is also the use of heat-sensing technology. The principle is to "move" color dyes to the print media by some means to form brilliant images. Dye sublimation transfer printing uses special paper output, the output is exquisite and exquisite, and the quality can be comparable to silver salt photos. Although sublimation printing photos works well, due to its slower printing speed, higher requirements are imposed on printing paper, and printing costs are also very high, which makes it difficult to gain popularity in the business field.

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