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Laser Printing of Conductive Silver Lines

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Digital printing of functional electronic devices is a major field of research and developments nowadays. Among others, progress is made to replace or supplement thick-film screen-printing technology by inkjet printing.

Inkjet printing is already a very developed technology to print passive elements of thick-film electronics. In addition to inkjet, a new approach of printing functional elements is launched at the Institute of Automation Technology of the Helmut Schmidt University / University of the Federal Armed Forces Hamburg (HSU). Electrophotography is a very promising way to print conductive and non-conductive thick-film elements. It offers a completely solvent-free method with high printing speed and a high potential regarding precision.

At HSU, a prototype printer is used to print conductor lines on LTCC tape. The corresponding toner is based on conductive silver powder. The approach aims for achieving a complete, conductive layout after firing. The parameters of the printer and its construction are optimized, to gain necessary thickness of lines without losing their sharpness. Several silver toners are utilized and compared. As a result, conductive silver lines are successfully printed and improved in density and thickness.
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Document Type: Research Article

Publication date: 2010-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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