Inkjet printing is expanding into many kinds of applications all over the world, especially, desktop printing for home and office and wide format printing for signage. On the other hands, in printing industry, analogue printing like as offset printing and screen printing are still being used. In comparison with analogue printing, digital printing such as Inkjet has not only significant of unnecessary of plate, variable, elaborated decoration, but also contribution of saving of energy and waste water for human society. This contribution for human society can be achieved to spread in mass production.
Until now, productivity of inkjet printing is not enough. Inkjet printing only has been used in small batch production. To replace analogue printing as mass production, high productivity is required.
We have been studied and developed inkjet technologies, ink, print head and printing system to enter mass production application. Recently we finally succeeded to develop a new print head with high productivity. This head is adopted new technologies, high frequency drive method and high packing nozzle chip.
In this paper we will explain how and to what extent the inkjet technologies have entered into applications of mass production by showing our products for those markets.

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The digital printing market has been growing in spite of the shrinkage of the conventional printing market. Continuous web press printers require wide printing width, high speed color, low running cost and medium print quality, and as a result inkjet technology is considered especially suitable. This paper describes the elements and technologies used for inkjet printers in order to understand their nature in comparison with electric photography which also realizes digital printing. Items such as data processing, which enables variable data and on demand printing, paper control system and principal printing process affect the ability to achieve high speed inkjet printing. Although there are other limitations related to cost and spatial restriction, jetting from nozzle, and flying and landing of ink droplets onto the paper are recognized as the most important principal processes that enable non-contact printing at high speed. Therefore, the behavior of flying droplets was discussed experimentally and theoretically, considering the airflow generated between the printhead and paper during the feeding operation. As a result, it was clarified that the paper feeding speed limit in high speed printing is affected more by the displacement of ink dots due to a difference in drop velocity than by the airflow.

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Textile inkjet printing using disperse dyes is drawing interest as an environmentally friendly method for dyeing fabrics, and its usage is expected to expand due to its strong brightness and fastness properties.
With a focus on dyes and dyeing properties, this article describes: properties of dispersed dyes; the 3 textile inkjet printing methods; prominent examples of dyes; precautions for stabilizing dispersement and creating inks using dispersed dyes; and challenges currently faced in this field.

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Various dyestuffs have been used for inkjet inks to improve chromo saturation, image quality and so on and the performance of ink is greatly dependent on the characteristics of the dyestuff. Generally dyestuffs are dispersed by polymer to be used in the ink and polymer characteristics strongly affect the performance of dyestuff dispersion. In this paper, the basic performances of dyestuff emulsions prepared with various polymers by phase inversion emulsification method were studied as a key component for inkjet inks. As a result, the initial viscosity of dyestuff emulsion has a high correlation with the product of the four factors, the amount of polymer in the emulsion, the hydrodynamic radius of the polymer, the neutralization degree and the acid value. The product of the four factors presents the surface density of the neutralized acid of the emulsion and helps us to predict the viscosity of the emulsion. Moreover, it turned out that the emulsion diameter is not influenced by molecular weight of the polymer and the neutralized surface acid amount per emulsion serves as an index of emulsifiability. The marker fastness was found to be related to the re-dispersability of the emulsion which could be controlled by hydrophobicity and hydrophilicity of the polymer.

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The evaluation of adhesion and pressure sensitive adhesives properties has an important role in fundamental for ensure of the product development and dependability. In this report, the importance and need of evaluation methods in practical use were considered. In addition, the measurement uncertainty was introduced as the effective methods to show the measurement dependability. By these discussion, it has been shown that the evaluation is useful as an important activity for ensure the reliability of adhesion performance. In the evaluation for the dependability, which is shown by the measurement uncertainty, it has been recommended to report the uncertainty source caused by the measurement or test as additional information.

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Fluoro-resin paint had been good situation of appearances and non corrosion with many track records even after over 25 years. The super high durability has effects to perform long term traffic services, lower life cycle cost, lower VOC and saving energy. Especially LCCs are getting 1/3rd or 1/4th comparing with Polyurethane coatings. The usage is spreading worldwide recently.

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