TrueFit is the inline density measurement system used to enable the highest levels of print quality consistency for the TruePress series of digital offset presses. TrueFit is positioned above the paper delivery area of the TruePress and consists of a newly developed capture head and lamp unit. It reads the control strip on the printed sheets in real time as they are being delivered, enabling more efficient control of ink densities during printing. And because ink densities are being read and displayed on the operation panel in real time, constant ink density control can be achieved without needing to remove sheets for measurements. This streamlines and increases the efficiency of the operator’s work.

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A New Printing Quality Control System for Web Offset Printing has been developed in Toppan Printing Co., Ltd. This new system consists of three systems, “Color Image Monitoring System”, “Ink/Water Balance Control System”, and “Press Control System”. The “Color Image Monitoring System” measures the color of images on running web. The “Ink/Water Balance Control System” measures the thickness of ink and water on the ink-rollers, and calculates ink/water balance. The “Press Control System” integrates the information from the above two systems, and adjusts the amount of ink and fountain solution supply. The control test has been done several times, and it is the result that a variation of printing color is reduced dramatically.

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[in Japanese]

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We researched the distribution in the CMYK space on a practical printing front. We made a color target for color management as the result. Though this color target consists of only 598 colors, the condition of the actual printing are reflected in it. We confirmed that this color target was useful. When the average value of the color difference is small, value of color difference doesn’t sometimes correspond to result of subjective evaluation. We examined the colors to which the operator of actual front was attached importance in subjective evaluation by using this color target.

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We examined color correction effect to fit different printing color reproduction condition, using printing machine with color control system and that front-end system. Image converted by color matching processing part in front-end system, apply it to target profile and device profile was printed to printing plate. In this result, we could fit printing color reproduction practically.

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We have developed a network system which can transfer mass data on the broad band network. This system consists of Home-servers and Gate-servers, and delivers data by packing it into a “container”. This system has four concepts of rapidity, obstacle-proof, safety, and simplicity. In order to realize these concepts, it implements functions such as a resume, a compression and decompression, an encryption, a tracking, an automatic transceiver, a directions document appending, and a notice mailing. On the printing process among remote factories, this system realizes more smooth workflow, than using conventional physical media.

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[in Japanese]

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The printing process consists of many processes from a picture design to product delivery. Conventionally, each of these processes is divided according to each specialty nature, and each process had separated them comparatively clearly. However, in connection with digitization of a process, a process classification becomes ambiguous gradually and the flow of the information between processes stopped corresponding to the conventional process classification. This is based on change of a process classification, and change of information circulation form. Therefore, the broad information in connection with the printed-matter product manufacture in a printing process needs to be established as an information system which can circulate freely in the future. In order to show that Database AMPAC is effective in the design of a printing process, we tried extraction of a printing process related parameter, and coding to Database AMPAC format. We checked Database AMPAC could use effectively from design to printing process.

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To obtain maximum efficiency in all the processes of printing production, from design through to post-printing, a well-structured unified model, which covers the whole process, would need to be defined in advance. In this paper, we have compared the two competitive models - CIP4 JDF and Database AMPAC. We also make the sample conversions between CIP4 JDF and Database AMPAC with our conversion program, to verify the flexibility of Database AMPAC.

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The objective of this study is to clarify ink film peeling mechanism in deinking from the surface chemical point of view. Also the final target focuses on obtaining an environment-friendly deinking treatment. In the previous paper, by assuming that ink peeling is occurred when the deinking solution penetrates into the interface between ink film and the ink supporting material, the residual ink amount was evaluated in relation to the ratio of the penetration strength to the adhesion strength. The perfect ink film peelinglimit did not result in the ratio of ideal value of about 1, but 0.65. This describes that another remaining factor effecting on the ratio will newly be predicted. In this paper, penetration behaviors of deinking solution into the surface of ink film that would be considered to be one of the parameters were investigated.

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In accordance with the development of Thermal Laser Technique, Commercial Sales of Thermal CTP plates has been increasing numbers. Among them Posi type has following merits and several plate providers set off their own products. Authors proposed and showed that introducing PNSC Technology to raise the ability level as a printing material was achieved to a great extent

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Boehmite treatment and the electrodeposition of siliceous film on boehmite film were investigated in order to make direct image aluminum lithographic plates. Boehmite treatment was carried out in water at temperature of above 95°C. Siliceous films were electrodeposited in sodium silicate solution (SiO₂/Na₂O molar ratio: 3.1). The transfer of oleophilic imaging material to boehmite films and ink receptivity of the electrodeposited surface were examined. The transfer of the imaging material was improved by boehmite treatment. The electrodeposition made boehmite film hydrophilic in short time.

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The possibility of the reformation of organic titanium complex coating to hydrophilic by UV irradiation and UV irradiation after heating was tested. As the result, the coating was reformed to a hydrophilic property by UV irradiation after heating (over two hundreds fifty degrees centigrade) in a short time, and its possibility of the application for processless CTP was recognized.

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A stable solution of mixtures consisting of organic titanium, organic zirconium and ethanol were applied to the aluminum foil surface and formed water repellent coatings. After which it was done reforming by dipping in a citric acid water solution at room temperature. And its wettability with water improved. The water rinsing after dipping in a citric acid or not is the factor for the degree of hydrophilicity. We applied this to non image area for multi direct planographic printing plate which can be correspond to variable image output source. This hydorophilic film is used for non image areas of the multi direct planographic printing plate and the use of pigment type ink for inkjet on the image area or by the transfer of toner imaging material by a laser-printer. It led to the possible application of it to short-run multi direct plates. By this procedure a printing with short-run was realized.

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The demand for thin, light, unbreakable, flexible displays is stronger than ever for use in devices like electronic books and paper-like displays. One of the most promising candidates is the OLED. In this report, we have developed a highly flexible barrier film for OLED by bonding a low hydrogen permeability and a low oxygen permeability. In the other hand, we have applied a gravure printing method to OLED. Using these technologies, we have succeeded in the prototyping of a red and green area-emitting color display. Moreover the authors demonstrated the feasibility of forming 100 μm line patterns of light-emitting material with specific lines for the RGB colors. This indicates that it should be possible to mass-produce highly flexible, full-color, OLED.

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In this report we have demonstrated that carrier transport in calamitic liquid crystalline semiconductive materials does not suffer from structural defects even when the thickness of liquid crystalline layer exceed 100 mm. Furthermore, we firstly achieved the image recording with the liquid crystalline semiconductor by utilizing of its superior photo-electrical properties: a 2-phenylnaphthalene was used as a thick photoconductive layer (100mm) between ITO-coated glass substrate and an insulative PET film of 12mm; the photo-induced capacitive image on the PET film was developed with toner as in case of Electrophotography. The resulting defect-free toner image proved that the domain boundary of the polydomain structure does not obstruct the charge transport in the liquid crystalline semiconductor.

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We started a study about Digital Halftone Screening Technology as new securities design. This technology is based on the PostScript^TM language. We understood that more complicated halftone dot generation was possible if we used a mathematics function. However, this technique needed knowledge of a mathematics function and skill of the PostScript^TM language. Thus we did two new suggestion. The one approach enabled more flexible halftone dot generation without using a mathematics function. Another approach arranged two kinds of images on the same plane equally and made it possible to get being perceivable or an invisible image. We named this technology “multi-image screen”. In this announcement, I report the development process and introduce various trial products.

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Nowadays most printed matter consists of halftone dots made by digital process. In recording halftone image, we have to trade off speed for quality. Until now we use higher screen ruling to get high image quality at the expense of recording time. In order to solve this tirade-off, we develop the “Co-Re SCREENING”. This screening technology enables us to use the lower output resolution in imaging the higher screen ruling. We examined to realize good tone reproduction in halftone. Also, we developed the new detecting method of the single color moiré using the output simulation and human visual systems.

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