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Although paper manufacturers may not be very clear about the true meaning of "digital technology." But they do know that digital printing needs their help to get products like offset quality...
A variety of digital printing processes have been around for a few years, and we have seen the direction of short-run printing in the industry. Laser and inkjet printers have become necessary tools for small offices or SOHO families. Xeikon and Indigo's digital presses have quickly expanded into the short and medium-volume print markets. The advent of these technologies presented new challenges to paper manufacturers and paper applicators to ensure the normal operation of these systems and obtain acceptable print quality.
Maybe in the next few years, there will be good dry toners, liquid toners appear, so that the ability to run inkjet printers. However, for paper producers, the improvement of paper performance is also a key part of the work. Its biggest technical problem is undoubtedly that the paper manufacturer must be able to produce coated paper for production that the user can accept, and that the paper also needs to be cost-effective, easy to accept, and can be used simultaneously on various printing presses. This goal may soon be realized. This article discusses the key issues that are manifested in the printing performance of each digital process.
The production of such coated papers must be developed in accordance with new printing techniques and ink transfer requirements (eg, ink absorbency and surface strength). The current modern digital printing technology is different from the traditional printing technology, so the current coated paper cannot meet the requirements in production. Therefore, there are new regulations on the physical and chemical properties of the coated paper used. At present, the use of coated paper for offset printing machines has a wide application field, and to make it a universal paper for inkjet, laser, and various other digital printing presses is just a matter of course.
Types of Digital Presses Digital presses have the following very important features:
1) Directly use digital data to generate printed surface information;
2) It is very easy to reimage the printed surface;
3) Information with changing content can be printed on each sheet.
Although this definition is an acronym for various forms of digital printing presses, this article mainly focuses on inkjet and toner-type printing systems. Currently, these two devices occupy a large proportion of the market. These systems, unlike the DI type printers, have new requirements on the paper surface, and therefore pose new challenges to paper producers and coating companies.
As technology advances, expectations for print quality will inevitably increase. And now, we may already be able to accept the quality of inkjet printers printing on uncoated paper, and we may expect the next generation of such printers to be able to obtain the quality of print magazine effects on coated paper. In order to obtain satisfactory digital printing effects on coated paper, further improvements in various aspects are required, and the price of such paper should be comparable to that of conventional paper.
Dry powder printing machine In the consumption of paper, non-contact printing is mainly based on dry powder electrostatic printing. Each office will have a monochrome laser printer. With the advent of Xeikon and related products, this market has expanded. As far as paper, office copying, laser printers and short-run digital presses are concerned, the same requirements can be met; paper specifications for toner transfer and melting technologies are new. In most systems, the transfer of toner relies primarily on electrostatics, and the melting condition is the effect of heat.
These differences result from the paper feeding and stacking requirements. Some laser printers demand more paper for better performance. This type of paper requires a short cycle of operation and is subjected to drag and push in the printer. If the office's laser printers are sheet-fed, the problem mainly occurs with paper feeds, double sheets, or multiple sheets.
For paper manufacturers, one of the most important parameters to control is resistance performance (Keithley resistance gauges can be used). If the resistance of the surface is very high, the static electricity absorbed by the paper will be high, and the paper sheets will stick together, which will cause misfeeds or double sheets, and even interfere with the control signals of the printer. If the resistance of the paper is low, the transfer performance of the toner is poor, so that the density of the printed image is low. Resistance performance is usually adjusted by the paper manufacturer using salt, but the resistance of the paper is very sensitive to changes in humidity. For this reason, office laser printers or Xeikon-type devices are used to control the humidity of environmental conditions. (To be continued)
A variety of digital printing processes have been around for a few years, and we have seen the direction of short-run printing in the industry. Laser and inkjet printers have become necessary tools for small offices or SOHO families. Xeikon and Indigo's digital presses have quickly expanded into the short and medium-volume print markets. The advent of these technologies presented new challenges to paper manufacturers and paper applicators to ensure the normal operation of these systems and obtain acceptable print quality.
Maybe in the next few years, there will be good dry toners, liquid toners appear, so that the ability to run inkjet printers. However, for paper producers, the improvement of paper performance is also a key part of the work. Its biggest technical problem is undoubtedly that the paper manufacturer must be able to produce coated paper for production that the user can accept, and that the paper also needs to be cost-effective, easy to accept, and can be used simultaneously on various printing presses. This goal may soon be realized. This article discusses the key issues that are manifested in the printing performance of each digital process.
The production of such coated papers must be developed in accordance with new printing techniques and ink transfer requirements (eg, ink absorbency and surface strength). The current modern digital printing technology is different from the traditional printing technology, so the current coated paper cannot meet the requirements in production. Therefore, there are new regulations on the physical and chemical properties of the coated paper used. At present, the use of coated paper for offset printing machines has a wide application field, and to make it a universal paper for inkjet, laser, and various other digital printing presses is just a matter of course.
Types of Digital Presses Digital presses have the following very important features:
1) Directly use digital data to generate printed surface information;
2) It is very easy to reimage the printed surface;
3) Information with changing content can be printed on each sheet.
Although this definition is an acronym for various forms of digital printing presses, this article mainly focuses on inkjet and toner-type printing systems. Currently, these two devices occupy a large proportion of the market. These systems, unlike the DI type printers, have new requirements on the paper surface, and therefore pose new challenges to paper producers and coating companies.
As technology advances, expectations for print quality will inevitably increase. And now, we may already be able to accept the quality of inkjet printers printing on uncoated paper, and we may expect the next generation of such printers to be able to obtain the quality of print magazine effects on coated paper. In order to obtain satisfactory digital printing effects on coated paper, further improvements in various aspects are required, and the price of such paper should be comparable to that of conventional paper.
Dry powder printing machine In the consumption of paper, non-contact printing is mainly based on dry powder electrostatic printing. Each office will have a monochrome laser printer. With the advent of Xeikon and related products, this market has expanded. As far as paper, office copying, laser printers and short-run digital presses are concerned, the same requirements can be met; paper specifications for toner transfer and melting technologies are new. In most systems, the transfer of toner relies primarily on electrostatics, and the melting condition is the effect of heat.
These differences result from the paper feeding and stacking requirements. Some laser printers demand more paper for better performance. This type of paper requires a short cycle of operation and is subjected to drag and push in the printer. If the office's laser printers are sheet-fed, the problem mainly occurs with paper feeds, double sheets, or multiple sheets.
For paper manufacturers, one of the most important parameters to control is resistance performance (Keithley resistance gauges can be used). If the resistance of the surface is very high, the static electricity absorbed by the paper will be high, and the paper sheets will stick together, which will cause misfeeds or double sheets, and even interfere with the control signals of the printer. If the resistance of the paper is low, the transfer performance of the toner is poor, so that the density of the printed image is low. Resistance performance is usually adjusted by the paper manufacturer using salt, but the resistance of the paper is very sensitive to changes in humidity. For this reason, office laser printers or Xeikon-type devices are used to control the humidity of environmental conditions. (To be continued)