On-line Vision System for Ink-jet Printed Media
Abstract:Vision and Recovery for Nozzle Failures
The implications for inkjet technology to be modified to print colour images on a wide range of new surfaces has quickly been recognised. This is particularly apparent for wide format designs. Using specialist inks, short run designs can be inkjet printed onto everything from floor coverings, to walls, to textiles, to ceramics.
Speed and reliability are two important factors that can be developed to improve production printer results. Nozzle blocking can be a serious problem when using exotic inks and media. Imperfect prints mean wasted time, materials and energy. This problem has been particularly seen in the textile industry where attempts to inkjet print textile with specialist inks have proven problematic.
Research at Leeds addresses these problems with emphasis being on the development of a vision and control system that enables detection and rectification of faults. Using two CCD arrays at either side of each colour print head and an appropriately tuned illumination source, live images can be processed to detect blocked nozzles. Results can be reported to a control system for online rectification. Colour line scan technology is still expensive in comparison to the technology used in desktop scanners. Work is being undertaken to create hybrid-scanning devices that use low cost linear arrays that potentially allow each head to have its own independent detection system.
Document Type: Research Article
Publication date: 2002-01-01
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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