A ‘button-shaped’ three-dimensional (3D) radio-frequency identification (RFID) tag combining 3D printing and inkjet printing technologies in fabrication for the first time is proposed. The button shape facilitates the tag’s integration with clothes for the purposes of identification and access control. The proposed tag features a compact size (radius 15 mm, height 7.5 mm) and a good performance...

We present an option for colour image segmentation applied to printing quality assessment in offset lithographic printing by measuring an average ink dot size in halftone pictures. The segmentation is accomplished in two stages through classification of image pixels. In the first stage, rough image segmentation is performed. The results of the first segmentation stage are then utilized to colle...

Background: A lack of information on the overall characteristics of work-related diseases in the printing press industry in Ghana holds back the development of effective disease prevention strategies in the industry. Objective: To identify the commonest disease conditions and factors that influence workers in the printing press industry to visit the hospital. Study design: A prospective descrip...

Screen printing has been the dominant method of thick film deposition because of its low cost. Many experiments in industry have been done and many models of the printing process have been developed since the 1960’s. With a growing need for denser packaging and a drive for higher pin count, screen printing has been refined to yield high resolution prints. However, fine line printing is still co...

The movable type printing press was the great innovation in early modern information technology, but economists have found no evidence of its impact in measures of aggregate productivity or income per person. This paper examines the technology from a new perspective by exploiting city-level data on the establishment of printing presses in 15th century Europe. I find that between 1500 and 1600, ...

The purpose of this study was to investigate the effect of type of alcohols and humectants in inks formulation, and the papers surface morphology on the ink-jet printing properties. In order to investigate the influence of alcohol and humectant types on printing properties, the optimum ink formulation from previous study, which contained C.I. Reactive Blue 21 Ink2 was formulated with different ...

This study details the use of printing and other additive processes to fabricate a novel amperometric glucose sensor. The sensor was fabricated using a Au coated 12.7 μm thick polyimide substrate as a starting material, where micro-contact printing, electrochemical plating, chloridization, electrohydrodynamic jet (e-jet) printing, and spin coating were used to pattern, deposit, chloridize, prin...

Thin film transistors are at the heart of integrated circuits. Modern computer processor chips can contain more than 2 billion transistors. Such chips are currently fabricated by expensive lithography processes and fabrication facilities can cost more than one billion US dollars. In a future era of cheap, disposable electronics such cost structures will not be practical. Printed electronics how...

the fabrication of complex-shaped parts out of (wt %) co-28cr-6mo alloy by three-dimensional printing (3dp) was studied using two grades of the alloy with average particle sizes of 20 and 75 μm. to produce sound specimens, 3dp processing parameters were tuned. the sintering behavior of the powders was characterized by the dilatometric analysis. batch sintering in argon atmosphere at 1280 °c for...

3D printing has been hailed as a game changer in the manufacturing sector, with major imprints across multiple domains. Players from several industries are investing heavily in 3D printing, with the possibility of extending its applicability to daily use products coming to the fore. With speculation and limited information blurring the line between reality and fiction, it is critical to analyze...