ABSTRACT. We have investigated the fast speed and patenting fabrication process of liquid crystalline organic semiconductors by blade coating using substrate surface with solution-wettable and unwettable regions. When thin films are fabricated at liquid crystal temperature at high speed 900mm/min, the resulting films show fine patterning and flat thin films. Bottom gate and top contact type organic field effect transistors (OFETs) with the patterned organic semiconductor thin films show high OFET mobility over 10 cm2/Vs and small variation, which comes from the flat, good molecular alignment and high crystallinity of patterned organic semiconductor thin films.

ABSTRACT. This is an explanation on the freeware HYRes IV that has released in March this year. HYRes is a software tool designed by the author, for use in accurately gauging the resolution of a digital camera using a resolution chart compliant with ISO standard. It supports the measurement methods described in both ISO 12233 and CIPA standard DC-003, and conventional two versions HYRes 3.1 and HYRes ACE have already been provided by CIPA and have contributed to the camera industry and users. However, recent PC OS progress has induced them become useless. HYRes IV is the integration of the functions of those two software and has been renewed to run on the latest OS where IV is an abbreviation for the Integrated Version.

ABSTRACT. An unmanned aerial vehicle (UAV) have attracted much attention in the fields of remote sensing, mapping for vegetation monitoring, and precision agriculture because of their ability to collect aerial data with high spatial and temporal resolution. The raw images captured in a defined flight path are processed, but before that, based on the spectrum of illumination, correction is one of the key technical issues. Radiometric calibration using empirical or manufacturer's methods is required to convert the raw digital data. There are two main ways to do this, one using calibrated reflectance panel (CRP) and the other using daylight sensors, which are attached to the airframe or device separately from the camera.

ABSTRACT. Introduction the current situation of the photography industry, trends in the camera industry and its technologies, from the aspect of the image input and output equipment field by camera industry engineer. In recent years, smartphones with cameras have become popular, and the camera market has changed greatly. In interchangeable lens camera systems, not only SLR cameras but also cameras that do not have mirrors in cameras called mirrorless cameras are becoming popular. In addition, compact cameras are devolving with high magnification zoom, environmental resistance, and 360-degree shooting and so on. Infer future changes in the photography and camera industries from the rapidly changing industry and technology trends.

ABSTRACT. The study about internal structure of scoria corns contributes a volcanic hazard estimation. Typical internal structure of scoria cones has been studied by observing cross section of outcrops or making numerical model by ballistic analysis of an active scoria cones. However, it is difficult to predict the internal structure of the scoria cone like the Izu-Omuroyama because it is non-active and no out crops. We will present a result of a pilot observation of multi-directional muography at the Izu-Omuroyama volcano. The Omuroyama volcano, which is located at Ito city, Shizuoka-pref., is one of largest scoria cones in the world. As the muon detectors, nuclear emulsion cloud chambers were used. As a result, we found a non-axisymmetric density structure in the volcano.

ABSTRACT. We have carried out measurement of ν_μ charged-current interaction using an emulsion detector. To study neutrino-nucleus interactions around 1 GeV energy region, we exposed the emulsion detector to the neutrino beam corresponding to 4.0 × 10^19 protons on target with the mean energy of 1.49 GeV. The emulsion detector is suitable for precision measurements of charged particles from neutrino interactions with a low momentum threshold owing to their high granularity. In this report, we will show the cross section and multiplicity measurements using iron-target emulsion detector in 2016.

ABSTRACT. The NINJA experiment is aimed to measurement precise cross section of neutrino and various targets such as water, iron, carbon etc. NINJA has conducted experiments on various scales so far. In recent years, J-PARC E71a experiment which using about 75kg water target has been completed in early 2020 and is now under analysing. J-PARC E71b with few hundred kilogram water target including heavy water is planned for 2022 to 23. The world's first experiment using heavy water target and nuclear emulsion films (NINJA Run9) was carried out in J-PARC for preparing and studying of E71b from February to April 2021. Scanning and analysing of they are currently underway. We will present the current status and future plans of the NINJA experiment.

ABSTRACT. NIT (Nano Imaging Tracker) is the nuclear emulsion using ultra-fine-crystals, and the NIT has the directional sensitivity to sub-micron length events. Such super high resolution tracking detector has capability of detecting the dark matter in the universe. The velocity of recoil nucleus induced by the dark matter is expected as β = v / c ～10^-3, while that of the electrons such as  ¹⁴C in gelatin which is noise in this study has  β ～ 10^-1. As the  stopping power mechanisms between those are different, investigation of difference for detection mechanism  and sensitivity for the NIT is very important for higher nose reduction and fundamental study for more detail understand of the NIT device.  In this study,  NIT was exposed with 3.48GeV carbon ions (pseudo noise) and 30keV carbon ions (pseudo signal) to evaluate the temperature dependence of each crystal sensitivity. As a result, the temperature characteristics of the crystal sensitivity for 3.48GeV carbon ions and 30keV carbon ions were different. Especially, we observed decrease in crystal sensitivity by lowering the temperature at around -50 ℃.

ABSTRACT. In today's complex digital prepress environments, application settings and RIP settings can have a significant effect on the results of the printed materials. However, PDF workflow systems' compliance with PDF/X settings is questionable. Many workflows are still changing the important properties of a PDF file. This is prohibited in the ISO-15930 because the result that the creator has seen and accepted in software or on a proof will be different from the final printed product if such changes applied in a later stage. This study identified seven critical properties and to test them accordingly. Utilizing pictorial indicators and reference images for indicators of errors. The test reveals that all the issues tested are real-world issues, particularly in a print production environment

ABSTRACT. This research applied LDM 3D printing to fabricate nano-Titanium dioxide (TiO2) thin film on an electrode or anode. The aim of research was to study the effect of parameters for setting the printer, such as nozzle size, printing speed, air pressure and nozzle distance from the electrode surface, on the quality of TiO2 thin film and related sheet resistance. The experiment began with the paste samples preparation by mixing between the ready-made nano-TiO2 PST-18NR (P25) with ethanol 99.5% and the flow of each paste was considered. Then a printing test was performed by adjusting the combination of the variation of the printer parameters.

ABSTRACT. To prepare the nanofibers or nanowires, currently different materials are used in printed electronics applications, such as Au, Ag and Cu etc. Among other metal NPs, Ag NP ink has been employed most extensively because of its excellent electrical conductivity and oxidation stability. However, in recent decades the industry demands the low-cost materials for reliable application without sacrificing the quality of the devices. For this purpose, currently we used low-cost materials such as high viscous CuO NP ink to fabricate fine line by near field electrospinning method to connect two electrodes of glass substrate. In this research, we demonstrate that Cu conductive fine line can be fabricate using electrospinning method for printing the fine line and green laser for sintering.

ABSTRACT. Large-scale two-dimensional single-crystalline copper nanosheets (Cu NSs) are synthesized by a simple hydrothermal method. The combination of a mild reductant, stabilizer, and shape modifier allow the dimensional control of the Cu nanocrystals from one-dimensional (1D) nanowires to two-dimensional (2D) nanosheets. We successfully synthesized Cu NSs with an average edge length of 10 μm, and these Cu NSs are the largest copper 2D crystals synthesized by a solution-based process so far. The application of the metallic 2D crystals as a printable electrode prove their feasibility as a conductive filler. And also, we observed outstanding electromagnetic interference shielding (EMI SE) efficiency from the hierarchical porous film with layer-by-layer assembly of 2D Cu NSs.

ABSTRACT. Color appearances are described in terms of brightness, colorfulness, hue (absolute attributes) or lightness, chroma, hue (relative attributes) following CIE color appearance model, which has been developed for surface colors mainly and does not applicable for lighting colors. In the case of the lighting, luminance and correlated color temperature (CCT) are the main descriptors to provide the color information roughly corresponding to brightness and hue. Nowadays, as the various colored lightings are widely used, color descriptions based on color appearance are needed for the lighting as well.

In this talk, current on-going researches on lighting color appearance will be introduced including warm-cool based correlated color temperature and chroma and brightness perception of the lightings.

ABSTRACT. The Japanese Society of Printing Science and Technology (JSPST) and The Illuminating Engineering Institute of Japan have provided "Guidelines for viewing conditions of printed matter using LED lightings for color evaluation". Old guidelines “JSPST-1998” was defined the conditions that Ra was more than 95, minimum Ri was more than 90, and color temperature was 5000K, etc. We conducted subjective and quantitative evaluations with the 14 LED lightings of 11 manufactures as to whether there is any difference from the high color rendering fluorescent lamps for color evaluation. The gist of new guidelines is that the LED lightings conformed in JSPST-1988 is practically useful for observing printed matter from these experiment results.

ABSTRACT. The recent development of solid-state lamps enables us more flexible lighting environments. The appearance of an object is influenced by its material and shape, and also lighting conditions. We introduce our research on color constancy and adaptation to demonstrate how color and colorfulness perception of objects changes depending on the spectral power distribution of lighting and after adapting to the lighting environment. We also show the effect of lighting diffuseness on the appearance of objects. Glossiness and roughness perception change by the diffuseness of illumination. Besides, lighting condition with moderate diffuseness is suitable for reproducing the accurate or ideal surface appearance. It is important to consider both lighting and object properties for the evaluation of object's appearance.