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Substrate Alignment for Single and Multilayer Ink Jet Materials Deposition in Digital Fabrication Systems

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As materials deposition technologies for digital fabrication evolve, the inevitable push toward volume manufacturing will necessitate the application of alignment and inspection technologies to monitor and control the production process. Many of these processes will depend on ink jet deposition of materials onto substrates with previously or subsequently applied structures or images. The successful function of the end product will depend on the precise alignment of materials from layer to layer. This paper describes the development of a Substrate Alignment Tool (SAT) using machine vision methodologies for rapid in-line measurement and adjustment of the alignment between layers. In addition, the SAT can double as an Image Analysis Tool (IAT) for in situ monitoring of process quality. This paper will focus on the design and use of the SAT for ink jet applications. Of particular concern to this study will be the identification of error sources and their contribution to process accuracy and repeatability.

Document Type: Research Article

Publication date: January 1, 2007

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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