Papers by Keyword: Printing

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Authors: Taik Min Lee, Tae Goo Kang, Jeong Soon Yang, Dong Soo Kim, Jeong Dai Jo, Byung Oh Choi, Kwang Young Kim
Abstract: This paper presents the design, fabrication, and performance test of a gap adjustable piezoelectrically-actuated DoD(drop-on-demand) molten metal injector for application to the 3D microstructure manufacturing or printed electronics. In the design process, we propose the gap adjustable mechanism of the piezoelectrically-actuated inkjet system to control the volume and velocity of the ejected molten metal droplets. In the experimental process, we fabricate the DoD metal injector and measure the volumes and velocities of the ejected droplets for molten metal as well as pure water to compare the ejecting performance for the different viscosity of ink and the operating temperature of the system.
Authors: Zhi Yong Gao
Abstract: Lots of unearthed objects and historical documents indicate the paper-making technology which had been invented in Western Han Dynasty moved to Japan through the Korean peninsula. This paper took the development of paper-making technology and how it spread to the major countries of East Asia as a clue to find out evidence of the early transmission of traditional handmade paper from the ancient literature, archaeological materials, research papers, and museum collections. Literature studies, field inspections and the traditional ways of recovery process were the main methods we used. After collecting and studying the materials, we drew the outline of the general picture of traditional handmade paper transmitting in the major countries of East Asia, and made a discussion about the relevant issues on the condition that the traditional handmade paper how to adapt to the geographical variation and the printing technology.
Authors: Qiang Guo, Yu Kui Li
Abstract: Using insulation slurry as composite material, the wall-shaped support spacer was designed and fabricated on the cathode back-plane. In the fabrication course of support spacer, the high effective screen-printing technique was employed to prepare the insulation slurry layer on the separation layer surface of cathode back-plane. And the conventional sintering process was utilized to solidify the printed insulation slurry layer subsequently. Many insulation slurry layers were sintered and stacked to form the support spacer arranged in equilateral triangle form. The carbon nanotube was used as field emitter, and the field emission display panel was fabricated and sealed with glass frit, which possessed good field emission characteristics and better image uniformity.
Authors: Andrzej Zbrowski, Tomasz Samborski, Eugeniusz Matras
Abstract: The article presents the structure and operation of the developed system for graphic personalisation of cards and paper sheets. The system is responsible for the input of unique graphics in the form of prints corresponding with suitable data recorded in the memory of a microprocessor. In the verification process, an electronic record is compared with alphanumerical information, and the conformity of digital graphics with the print is checked. The system was used in the construction of a process line for producing RFID-secured documents. The system has a modular structure and is composed of two modules responsible for the prints and automatic verification of graphic personalisation. The printing module enables the application of the print in the form of alphanumerical signs or unique graphic symbols and a barcode, which is conducted according to the structure of the database from which information on personalisation is obtained. The verification module compares the electronic record from the microprocessor with alphanumerical information and checks whether digital graphics agree with the print. Printing is performed using an inkjet printhead, whereas for the verification process, a digital line scan camera is applied. Mechatronic positioning systems enable the printhead and camera shift freely along the print and inspection area and allow changes in positioning speed parameters.
Authors: Shi Min Ni, Qing Shan Li, Xin Yuan Shen
Abstract: The title introduced Anion anionic additive, character and application. Anionic additive can apply in paint, textile, coating, foam, plastic, etc. The structure of opal shale and the mechanism of release anion were discussed. The opal shale was comminuted by the airflow method. The average diameter of the opal shale granule was observed by granularity instrument. The result indicated that size is about 0.40-5.0μm. The printing poplin with high performance was achieved by intermingle technology and the generally printing means. The anion number (4000 ions /cm3) in printing poplin was measured.
Authors: Charoon Klaichoi, Rattanaphol Mongkholrattanasit, Nattadon Rungruangkitkrai
Abstract: The purpose of this research was to study the white resist printing with colour resistant material from flour of wild taro (Colocasia esculenta (L.) Schott) and using pigment as dyestuffs. The optimal ratio of colour resistant materials from flour of giant taro were compose of 19% wild taro corm, 30% water, 34% sodium chloride, 13% calcium hydroxide, and 3% vegetable oil. The fixation of printing by using hot air at 110 °C for 3 minutes can resist dyestuffs and also easy to remove the flour of giant taro. The pattern at resist printing area of fabrics shows sharpness and whiteness. The colour fastness results were ranging between fair to good level.
Authors: Rattanaphol Mongkholrattanasit, Nattadon Rungruangkitkrai, Janya Pikul, Wancheng Sittikijyothin
Abstract: Tamarind gums from different areas in Thailand (Uthaithani, Ang Thong, and Nakhon Sawan) as a thickening agent were used for printing on polyester fabric with disperse dye in comparison to the commercial tamarind gum from India as presently used in textile printing. All tamarind gum samples presented high polysaccharide and protein contents. The obtained results indicated that the properties as colour values, colour strength (K/S), overall fastness properties, handling, and sharpness of printed polyester fabric were good to very good levels. Only slight differences were observed between our tamarind gum samples and commercial one.
Authors: Kai Yin Guo, Ren Cheng Tang
Abstract: The reactive dyes originally designed for cotton were applied to silk printing. The influence of alkali category and dosage, temperature and relative humidity of vapor was discussed in the case of the use of 2% dye, and the staining on white ground during soaping was also discussed. The satisfactory printing effect was achieved when 1% NaHCO3 or KHCO3 was used as an alkaline agent, and steaming was performed at 102-105°C and 90% relative humidity. The level of staining on the white ground was found to vary with dye catagories. This study indicates that the specially selected reactive dyes can be successfully used in silk printing.
Authors: Jiraporn Choomchit, Jantip Suesat, Sae Be Porntip
Abstract: Development of chitosan as a thickener for direct printing of natural dye on cotton fabric was investigated. Chitosan was applied as a thickener at various concentrations and its effect on the print properties was determined in comparison with the typical printing thickener, sodium alginate. The results exhibited that chitosan affected the fabric properties by increasing fabric yellowness and stiffness. However, with increasing chitosan concentrations, the yellowness reduced only marginally. Direct printing on cotton fabric with 3% Natural Chestnut at varying chitosan concentrations showed that the optimum chitosan concentration for the printing was at 3%w/v, being equivalent to the viscosity of 17,800 mPa. The 3%w/v chitosan imparted the ultimate color yield, print outline sharpness and a minimal dye bleeding on the unprinted area of the fabric. Use of chitosan concentration higher than 3%w/v led to poor print properties on the fabric. The efficiency as a thickener of chitosan was found to be superior to sodium alginate. A high color yield and good color fastness properties on cotton fabric were rendered in the case of chitosan thickener at the same applied concentration with sodium alginate.
Authors: Wei Zhao, Hong Yong Xie
Abstract: Degradation of printing and dyeing wastewater after aerobic biochemical treatment by photocatalysis is studied by using a rotating photoreactor and TiO2 photocatalyst of Degussa P25. Effects of irradiation time and pH value on removing efficiency are investigated. The results show that the COD down to about 80mg/L can be achieved at the irradiation time of about 4-5 hours at mild pH values. At the pH value from 1.5 to 3.2, the COD down to about 80mg/L can be achieved at the irradiation time less than 1 hour, and the COD down to about 20mg/L could be achieved at the irradiation time of about 4 hours at a pH value of about 3.2.
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