نتایج جستجو برای: flexography printing

تعداد نتایج: 30311  

Introduction: In many countries, the noise has been ranked among the important risk factors in the printing industries. The purpose of this study is to design a tool for Assessing the level of knowledge, attitude and practice of the printing industry workers in the field of hearing protection and determining its validity and reliability. Methods: To design a questionnaire, 35 questions were pr...

Journal: :Analytical chemistry 2014
Bethany C Gross Jayda L Erkal Sarah Y Lockwood Chengpeng Chen Dana M Spence

Nearing 30 years since its introduction, 3D printing technology is set to revolutionize research and teaching laboratories. This feature encompasses the history of 3D printing, reviews various printing methods, and presents current applications. The authors offer an appraisal of the future direction and impact this technology will have on laboratory settings as 3D printers become more accessible.

1993
Victor Ostromoukhov

The present paper studies the chromaticity gamut of multi-color printing processes. Heptatone (7color) printing – the most promising variant of multi-color printing – offers a significantly larger gamut than a conventional CMYK printing process, approaching CRT and film gamuts. The behavior of the process in the device-independent CIE-XYZ and CIE-L*u*v* colorimetric spaces is explored using the...

2016
Qi Liu Taoran Le Sailing He Manos M. Tentzeris

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...

Journal: :Image Vision Comput. 2005
Lars Bergman Antanas Verikas Marija Bacauskiene

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...

2012
Kwame Nkrumah

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...

2001
Jianbiao Pan Gregory L. Tonkay Alejandro Quintero

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...

2010
Jeremiah Dittmar

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 ...

Journal: :ECS journal of solid state science and technology : JSS 2015
Xiaosong Du Christopher J Durgan David J Matthews Joshua R Motley Xuebin Tan Kovit Pholsena Líney Árnadóttir Jessica R Castle Peter G Jacobs Robert S Cargill W Kenneth Ward John F Conley Gregory S Herman

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...

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