In the 90s of the 20th century, it was honored as the era of powder science in the world. During this period, according to the development of powder technology, high-quality color film, color video tape, and other products came into being, which enriched people's lives and entertainment. The printing industry is no exception. The blessings of powder technology advancement are not shallow. This article describes the application of dusting imaging technology.
The status of color printing in the office environment
In today's office environment, the requirements for color printing are on the rise. However, the status quo is that color printers with a balance between cost and performance have not yet been commercialized, and they are still dominated by monochrome printers. Although the popularity of the Internet and the advancement of computers and information technology can expect the office to go paperless, the current reality is that the amount of printing paper in the office is increasing. Moreover, it is highly desirable to obtain the required document types, on-demand printers that can immediately arrange for printing, and a device that can take into account copying and facsimile with versatility. In order to pursue higher-quality documents and data, it is necessary to find ways to achieve the same advantages as existing black-and-white printers and achieve higher printing speeds and lower costs. The following describes color printing using dusting technology, which shows that it is possible to comprehensively solve the above problems. In the future, we hope that this technology will become the mainstream of printing equipment in the office environment.
Spray printing structure
The following four items can be achieved by dusting.
1. Full color printing
2. High-speed printing
3. Cheap and little working capital
4. High quality
Dusting is a direct printing in which a toner is directly applied to a recording medium such as paper. It is completely possible to quickly obtain stable and high quality prints at low cost.
Figure 1: Structure of dusting printing
The dusting printing structure is as shown in FIG. 1 , and the charged toner is ejected through a fine-pored thin substrate (FPC) toward a back electrode to which a high voltage of 1 KV is applied, and adheres to the paper passing between the FPC and the back electrode. The fine holes arranged on the FPC are equipped with a ring electrode, and the toner is sprayed on the toner according to the voltage controlled by an actuator. The toner adhered to the paper constitutes a fine dot, which is attached to the ring electrode through the surrounding ring electrode. The dots form words and images together, and then, like a laser printer, the toner is fixed on the paper by pressure and heat, and at the same time, the FPC is cleaned in preparation for the next printing.
Spray printing features
(a) Less color misalignment
In color printing, due to the deviation of the toner positioning, the color will be misaligned, which will affect the image quality. In terms of dusting, as shown in FIG. 2, in a precise rack, the four-color printing heads are arranged in series, and only the recording medium is moved during the development process. Because of the above, to improve accuracy and reduce the occurrence of color misalignment. At the same time, the purpose of reducing manufacturing costs is to simplify the structure.
(B) Resolution
At present, the dusting technology has reached a good book quality of 600dpi. Even if it is possible to reach 1200dpi, the Aray company mentioned later, in order to improve the quality of photo books, it is better to use a multi-step gray scale to complete the printing, considering the improvement of the resolution, and the development focuses on the latter.
Figure II: Print Head
(C) Gray Scale
The above-mentioned multi-step ash ladder is actually one of the biggest advantages of dusting. As shown in Fig. 3, the glue stamping modulation method can finely adjust the gray ladder rule equivalent to the point part, and obtain excellent book quality with a low resolution. At present, it is still being developed with an eight-step grey scale, and the technology for realizing the sixteenth tone is being explored.
Figure 3: Energy levels of a multi-step ash trap
(D) high-speed printing can be done at high speed. For the current development, the A4 size vertical full color produces 12 to 16 pieces per minute, which is equivalent to a standard office monochrome laser printer. If you do a simple calculation on the table, the potential for dusting is 600 dpi for resolution, 100 seconds for printed rubber, and 84 full-color vertical shots for A4. In fact, from the point of view of FPC manufacturing problems, development schedules and other constraints, it is not easy to achieve this level of performance, but in the future it is entirely possible to reach a level of 30 sheets per minute.
(E) Low cost
In terms of structure, if the constituent parts are reduced, miniaturization and low cost are entirely possible. In addition, on existing laser printers, the photosensitive drum must be replaced on a regular basis, but on powdered printers, the FPC can be used permanently, so the working capital can be kept low.
Aray's dusting technology
Here is a brief description of the dusting technology developed by the Swedish company Aray. The company's strategy is to use the dusting technology invented by Ove Larson, the founder of 1986, to provide its patent licenses to manufacturers of printers, copiers and fax machines. At the same time, new developments and patents, including peripheral and complementary technologies, are used to protect new developments. The user is granted the right to use patented technology and technical decisions, as well as the right to use the powdered trademark.
As one of the development bases in Sweden, Aray Japan was established in Yokoya, Japan in 1997. This is an effort to provide services to Japanese users. Of the company’s forty-five employees, thirty-two are engaged in development research. The current goal is to have a powdered color printer with the following features and characteristics to complete commercialization through a patent license in 2002.
1. Pocket-sized full-color printer for office use
2. 12 to 16 prints per minute
3. Eight-step gray ruler
4. Multiply $2,000
The prospects are to promote high speed, improve image quality, multi-level adjustment of gray scale, and reduce costs. At the same time, we are also discussing the application of dusting technology in addition to paper and OHP film, with more recording media as an object, and expanding the application approach.
summary
It can be predicted that the performance of color printing equipment will also expand in the future. In the office environment, it is more widely used, and in particular, dusting printers with various advantages will occupy a more important position. With it, information such as advertising materials or company presentations that were originally printed on the outside, will be printed and distributed at any time, anywhere, depending on the number of copies needed.
The status of color printing in the office environment
In today's office environment, the requirements for color printing are on the rise. However, the status quo is that color printers with a balance between cost and performance have not yet been commercialized, and they are still dominated by monochrome printers. Although the popularity of the Internet and the advancement of computers and information technology can expect the office to go paperless, the current reality is that the amount of printing paper in the office is increasing. Moreover, it is highly desirable to obtain the required document types, on-demand printers that can immediately arrange for printing, and a device that can take into account copying and facsimile with versatility. In order to pursue higher-quality documents and data, it is necessary to find ways to achieve the same advantages as existing black-and-white printers and achieve higher printing speeds and lower costs. The following describes color printing using dusting technology, which shows that it is possible to comprehensively solve the above problems. In the future, we hope that this technology will become the mainstream of printing equipment in the office environment.
Spray printing structure
The following four items can be achieved by dusting.
1. Full color printing
2. High-speed printing
3. Cheap and little working capital
4. High quality
Dusting is a direct printing in which a toner is directly applied to a recording medium such as paper. It is completely possible to quickly obtain stable and high quality prints at low cost.
Figure 1: Structure of dusting printing
The dusting printing structure is as shown in FIG. 1 , and the charged toner is ejected through a fine-pored thin substrate (FPC) toward a back electrode to which a high voltage of 1 KV is applied, and adheres to the paper passing between the FPC and the back electrode. The fine holes arranged on the FPC are equipped with a ring electrode, and the toner is sprayed on the toner according to the voltage controlled by an actuator. The toner adhered to the paper constitutes a fine dot, which is attached to the ring electrode through the surrounding ring electrode. The dots form words and images together, and then, like a laser printer, the toner is fixed on the paper by pressure and heat, and at the same time, the FPC is cleaned in preparation for the next printing.
Spray printing features
(a) Less color misalignment
In color printing, due to the deviation of the toner positioning, the color will be misaligned, which will affect the image quality. In terms of dusting, as shown in FIG. 2, in a precise rack, the four-color printing heads are arranged in series, and only the recording medium is moved during the development process. Because of the above, to improve accuracy and reduce the occurrence of color misalignment. At the same time, the purpose of reducing manufacturing costs is to simplify the structure.
(B) Resolution
At present, the dusting technology has reached a good book quality of 600dpi. Even if it is possible to reach 1200dpi, the Aray company mentioned later, in order to improve the quality of photo books, it is better to use a multi-step gray scale to complete the printing, considering the improvement of the resolution, and the development focuses on the latter.
Figure II: Print Head
(C) Gray Scale
The above-mentioned multi-step ash ladder is actually one of the biggest advantages of dusting. As shown in Fig. 3, the glue stamping modulation method can finely adjust the gray ladder rule equivalent to the point part, and obtain excellent book quality with a low resolution. At present, it is still being developed with an eight-step grey scale, and the technology for realizing the sixteenth tone is being explored.
Figure 3: Energy levels of a multi-step ash trap
(D) high-speed printing can be done at high speed. For the current development, the A4 size vertical full color produces 12 to 16 pieces per minute, which is equivalent to a standard office monochrome laser printer. If you do a simple calculation on the table, the potential for dusting is 600 dpi for resolution, 100 seconds for printed rubber, and 84 full-color vertical shots for A4. In fact, from the point of view of FPC manufacturing problems, development schedules and other constraints, it is not easy to achieve this level of performance, but in the future it is entirely possible to reach a level of 30 sheets per minute.
(E) Low cost
In terms of structure, if the constituent parts are reduced, miniaturization and low cost are entirely possible. In addition, on existing laser printers, the photosensitive drum must be replaced on a regular basis, but on powdered printers, the FPC can be used permanently, so the working capital can be kept low.
Aray's dusting technology
Here is a brief description of the dusting technology developed by the Swedish company Aray. The company's strategy is to use the dusting technology invented by Ove Larson, the founder of 1986, to provide its patent licenses to manufacturers of printers, copiers and fax machines. At the same time, new developments and patents, including peripheral and complementary technologies, are used to protect new developments. The user is granted the right to use patented technology and technical decisions, as well as the right to use the powdered trademark.
As one of the development bases in Sweden, Aray Japan was established in Yokoya, Japan in 1997. This is an effort to provide services to Japanese users. Of the company’s forty-five employees, thirty-two are engaged in development research. The current goal is to have a powdered color printer with the following features and characteristics to complete commercialization through a patent license in 2002.
1. Pocket-sized full-color printer for office use
2. 12 to 16 prints per minute
3. Eight-step gray ruler
4. Multiply $2,000
The prospects are to promote high speed, improve image quality, multi-level adjustment of gray scale, and reduce costs. At the same time, we are also discussing the application of dusting technology in addition to paper and OHP film, with more recording media as an object, and expanding the application approach.
summary
It can be predicted that the performance of color printing equipment will also expand in the future. In the office environment, it is more widely used, and in particular, dusting printers with various advantages will occupy a more important position. With it, information such as advertising materials or company presentations that were originally printed on the outside, will be printed and distributed at any time, anywhere, depending on the number of copies needed.
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