In this study, image sensor pixels were fabricated on PET (polyethylene terephthalate) films by integrating organic transistors using liquid crystalline organic semiconductor Ph-BTBT-10 and organic photodetector using liquid crystalline phthalocyanine derivatives 8H₂Pc. Also, we used photo cross-linkable polymer poly (vinyl cinnamate) as patternable gate insulator of organic transistors. The fabricated image sensor pixels were confirmed to exhibit pixel switching by the transistors. The linear dynamic range was 51 dB, and the pixel exhibited a highly linear photo-current response between light irradiation of 10 nW/cm²and 100 µW/cm², where the resistance of ON state transistor is smaller than that of the photodetector. Below light irradiation of 10 nW/cm², output current was limited by dark current of photodetector. 2.6 ms response time was achieved and it is an operating speed of 12 rows of output per frame at 30 fps.

An ink dot after landing on paper shifts from the landed position due to droplet settling interference. The dot shift degrades the print quality, particularly graininess. In this research, we focused on the landing order of dots and clarified the mechanism of image quality deterioration due to the interference. We developed a new halftone technology to suppress the shift and improves filling on the paper with mixed droplet types. Under high-speed printing conditions that tend to degrade the image quality, we improved the graininess in high density areas by optimizing the dot placement. Furthermore, we reduced the ink consumption by efficiently filling the dots.

Inkjet printers have advanced significantly since achieving photo-quality output in the 2000s, driven by innovations in inkjet heads. Key developments include droplet miniaturization, increased productivity, and large-scale, high-speed industrial printers. Technologies such as larger heads, ink circulation systems, and the use of high-viscosity inks have enabled digital printing in commercial, textile, and packaging sectors. Moreover, inkjet printers are adapting to societal and environmental changes through the development of UV-curable inks and hybrid printing systems. These technologies are also being applied to emerging fields like electronics and 3D printing, further expanding the potential of inkjet technology for diverse applications.

In recent years, the commercial and industrial printing field has been shifting from analog printing, mainly using offset methods, to digital printing such as inkjet printing, which contributes to greater efficiency in short-run, small-lot printing and reduced labor costs. To respond to these trends, KYOCERA Document Solutions Inc. launched the TASKalfa Pro 15000c high-speed cut-sheet inkjet printer in 2019 and the FOREARTH textile inkjet printer in 2024. This paper reports on these digital printers that use these environmentally friendly water-based inks.

Phase-change UV ink has been developed as a technology to suppress the coalescence of ink droplets in high-speed printing and to achieve fast drying. Phase-change UV ink is in a liquid state at high temperatures, but as soon as it hits the paper, it cools, the wax added to the ink crystallizes, and the ink change a gel state. However, the cooled wax precipitates on the image surface, reducing the suitability for varnishing and lamination. Therefore, by observing the surface of the image using atomic force microscopy (AFM) and evaluating the relationship between the type of wax, gelation, and surface properties, we succeeded to select the optimal wax and formulation of the ink. It is expected that inkjet applications will continue to develop further with advances in technology to improve image quality and post-processing.

Fujifilm Business Innovation Corporation has introduced the Jet Press 1160CF to the market in 2022 which is color inkjet continuous feed printing system. This system achieves high quality printing with high density ink and high productivity at a maximum speed of 160 m/min, and is also compatible with matte coated papers and offset papers.

In recent years, against the background of changes in production sites, requirements for production printers have been changing from simple machine specifications such as image quality and printing speed to more diverse requirements such as operability, energy-saving performance, and productivity efficiency. In this report, we introduce the product concept of Jet Press 1160CF, and outline the key technologies newly adopted to enable high-speed and high-quality imaging.

FUJIFILM exhibited Revoria Press GC12500, its first digital printing machine that is fully adapted to B2XL^＊ paper size (^＊extra large : up to 750×662 mm) using dry electrophotographic (EP) technology, demonstrated to print on B2XL paper at Drupa 2024. In the dry EP, heating toner by far-infrared rays in fixing process and the density of the magnetic brush in development process make it possible to ensure suitability for B2XL paper and uniformity of in-plane density. As a result, the quality like offset printing can be obtained, and it is expected to improve the efficiency of the printing workflow. The dry EP system equipped with these technologies has the potential to solve the problems of printing companies by improving operational efficiency and securing human resources by enabling hybrid arrangement with offset printing.

The RICOH Pro C9000 series is a flagship model that promotes the shift from offset to digital printing in the commercial print market. There is increasing demand for printing on lighter materials, such as flyers, and for handling a wide variety of media. The RICOH Pro C9500, the latest model, features a sliding fusing method that improves print quality. This method uses a sliding pad and pressure roller to create a nip, addressing issues like uneven luster on thin paper and waves on synthetic paper. It also supports paper weights down to 40 g/m². To improve durability, a sliding sheet and oil application mechanism have been added. These innovations make it possible to handle diverse media and maintain high productivity. This paper discusses the benefits of this advanced fusing technology and its technical details.

The inkjet printing technology has been introduced to the Japanese textile/apparel industries and fashion distribution for some time and is becoming increasingly popular. It is hoped to play a vital role in the digital transformation (DX) of the Japanese fashion business. However, the definitions of “digital textiles” and the Japanese term for inkjet printing on textiles, “inkjet nassen,” vary depending on the stakeholders involved at different stages of the fashion business. This paper summarizes the broadest interpretations of “digital textiles” in its current usage and examines how “nassen” technology has been applied in modern Japanese textile dyeing methods. Then, the future of the Japanese fashion business is explored by positioning inkjet printing not just as a technological tool but as the latest successor to Japanese motif dyeing methods, which have long been valued for producing high-quality and value-added products—products that inkjet printing could continue to differentiate from competitors overseas.