NIHON GAZO GAKKAISHI (Journal of the Imaging Society of Japan)
Online ISSN : 1880-4675
Print ISSN : 1344-4425
ISSN-L : 1344-4425
Current issue
Displaying 1-17 of 17 articles from this issue
Preface
Regular Paper
  • Yuki YOKOYAMA, Wataru SUZUKI, Toshihiko SUZUKI, Yutaka KANAI, Kenji AK ...
    2022 Volume 61 Issue 4 Pages 311-320
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL FREE ACCESS

    In the electrophotography development process, various development parameters are optimized to obtain excellent and stable development quality. Focusing on the neutralization rate and starvation defect as important development characteristics, we describe forming mechanism of the starvation defect, and also we investigated the relationship with the important development parameters. It was clarified that the starvation defect is mainly formed by the following three mechanisms ; insufficient development by edge effect of electric field while passing at pre-nip region, repairing of insufficient development while passing at inside-nip region, and electric scavenging while passing at post-nip region. In addition, it was clarified that the neutralization rate and starvation level vary depending on the developer density and velocity as intermediate characteristics. It is useful that development parameters which optimize these characteristics.

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Feature Articles on Copying Machine Heritage
Imaging Today
  • Atsuki KIMURA
    2022 Volume 61 Issue 4 Pages 341-350
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    The pulp and paper industry emits large amout of CO2. Due to the high dependency on fossil fuels, transition toward net-zero is essential. On the other hand, the majors put effort into paper product as plastic substitutes, especially barrier paper for packaging due to enforcement of the new law : The Plastic Resource Circulation Act.

    The concept of circular economy is “promote resource cycling, reduce waste, while efficient utilization of untapped resources”. In the case, this paper introduce CaMISHELL® that is branded the eggshell paper and nanocellulose as a plant-derived next generation.

    Fuel switching is the key to achieve carbon neutrality in the industry, and innovative technologies are drawing attention. However, early practical application is difficult, the transition period, it is essential to contribute to a reduction in CO2 emissions of society as a whole by providing products made of carbon-neutral and environmentally friendly materials, by using “biorefinery” technologies for manufacturing chemical products from woody resources.

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  • Yasutomo NOISHIKI, Misaki WAKABAYASHI, Yuta SHAMOTO, Moeka NAMIOKA
    2022 Volume 61 Issue 4 Pages 351-357
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    The Oji Group is developing a new SILBIO series of packaging paper-based materials that can be substitutes for disposable plastic films for packaging, as the movement to reduce plastics is rapidly spreading on a global scale, stemming from the issue of marine waste. SILBIO Series consists of four lineups that differ in concept : barrier paper with gas barrier properties, “SILBIO BARRIER”, translucent barrier paper with content visibility in addition to gas barrier, “SILBIO CLEAR”, aluminum vapor deposition paper with light shielding and high gas barrier properties similar to those of aluminum vapor deposition film, “SILBIO ALBA”, heat sealing paper with emphasis on heat sealability, and so on. Although many problems still remain to be solved in order to popularize paper materials as packaging materials, it is hoped that SILBIO series will contribute to the solution of global environmental problems even a little.

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  • Sadanao OKUDA
    2022 Volume 61 Issue 4 Pages 358-362
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    The most important issue for the printing inks industry to be addressed in order to achieve the SDGs (Sustainable Development Goals) is the production and product development of printing inks that are sustainable and environmentally friendly, as set out by the companies. We have been an industry pioneer in the development of environmentally friendly inks, and the ratio of environmentally friendly inks to actual domestic sales volume in FY2020 (our standard) has reached approximately 95%. Based on product design that balances quality, functionality and environmental friendliness, we are accelerating development of water-based inks, biomass inks and the products that are expected to be applied to recyclable plastics in addition to less usage of petrochemical materials. Thereby we will have wide range products that contribute to the reduction of greenhouse gas emissions and other environmental impacts at various stages of the supply chain.

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  • Takako SATOH
    2022 Volume 61 Issue 4 Pages 363-369
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    In recent years, the transition to a Circular Economy has become a common recognition as a global issue next to climate change countermeasures. In order to utilize limited resources in the future, it is indispensable to enable efficient and sustainable use of natural resources, and the trend from ownership to use needs to accelerate. In 1994, the Ricoh Group established the “Comet CircleTM” as a concept for realizing a Circular Economy. In line with the concept of the Comet Circle, we have promoted the effective life cycle use of resources and have been promoting efforts toward the realization of a Circular Economy for many years. In this paper, we will introduce the concept for realizing a Circular Economy of the Ricoh Group and Reuse and Recycling Businesses of multifunction devices and printers under the title of “Policies and Strategies to Materialize a Circular Economy, Toward Improving Resource Efficiency.”

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  • Katsuhito GOMI
    2022 Volume 61 Issue 4 Pages 370-373
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    Printing using paper has the aspect of increasing various environmental loads such as water resources, forest resources, mineral resources, and CO2 emissions. On the other hand, paper has universal value and is expected to continue to be used above a certain level. Epson has released PaperLab A-8000, a dry papermaking machine that can complete the recycling of paper resources in the office. A-8000 reduces the environmental impact of papermaking, enhances the sense of security of information, provides the value of producing various recycled papers at high speed, and reduces a mental resistance to printing and the use of paper.

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  • Yusuke NAGATA
    2022 Volume 61 Issue 4 Pages 374-378
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    The world is going toward paperless as the digital and IT (information technology) technologies advance. In the business setting however remain the values of paper which cannot be easily replaced by digital technologies. Duplo developed and distributes the compact paper making system RECOTiO to realize the in-house paper recycling by individual companies and to preserve beautiful features of paper as media.

    RECOTiO uses water only to recycle 100% used paper. The paper made by the system then can be recycled repeatedly and contributes to the SDGs (sustainable development goals) activities of the companies.

    To preserve the limited resources for future, we aim to establish and spread the culture of in-house paper recycling by individual companies.

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  • Takeshi ASHIZAWA, Satoshi KUNII
    2022 Volume 61 Issue 4 Pages 379-385
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    With the corporate message “Kirei Lifestyle” in mind, we have started initiatives to reduce environmental impact, aiming to solve current social issues and contribute to a recycling-oriented society in the future, as well as to shift from a conventional linear economy to a circular economy. In this report, we introduce the technology of reduction innovation in digital printing for flexible packaging using LUNAJET®, the water-based pigment inkjet ink, in order to create a new eco-value chain, and report the calculation results of reduction in environmental damage contributed by the innovations. In addition, we will introduce the development of thermo-responed LUNAJET® ink as an initiative for recycling innovation aimed at horizontal recycling. We are working on these digital eco-printing solutions with the cooperation of related industries and consumers.

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  • Tetsuo OHKAWA
    2022 Volume 61 Issue 4 Pages 386-391
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    CO2 Zero Printing is still no a familiar words for everyone yet. In this research, the importance of practicing CO2 Zero Printing and how can we possible contribute to make our society better while balancing the environment and the economy through CO2 Zero Printing will be state.

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Imaging Highlight
  • Kousuke TAKEUCHI, Naohiro HAYAISHI
    2022 Volume 61 Issue 4 Pages 392-396
    Published: August 10, 2022
    Released on J-STAGE: August 10, 2022
    JOURNAL RESTRICTED ACCESS

    Deep learning-based image processing technology offers amazing performance depending on ingenuity. In the Japanese manufacturing industry, there is important information that occurs during the manufacturing process. This information is multidimensional, and humans are not good at interpreting it. We combined deep learning, which is good at multidimensional operations, and statistical estimation, which represents human knowledge, to create a model that performs better than conventional image processing.

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Lectures in Science
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