UV Curing of Ink Jet Printing
A number of variables of a UV curing lamp system, which can be designed or selected to produce the most efficient result, are discussed. Variables include power, irradiance, spectral radiance, infra-red irradiance, and dichroic treatment of radiation and lamp geometry. The interaction with the optical and physical characteristics of materials such as spectral absorptivity, optical thickness, and diffusivity, result in limitations of the cure “window.” Typically, this cure “window” is limited by loss of key physical properties, including adhesion, solvent resistance and scratch resistance.
The four key factors of UV lamps are: UV irradiance (or intensity), spectral distribution (wavelengths) of UV, total UV energy, and infra-red radiation. The ability to manage the various lamp characteristics and match them to the optical properties of the curable materials, widens the range in which UV curing is a faster, more efficient production process. Practical keys are suggested which will facilitate an analytical approach to process optimization and monitoring. UV curing systems for moving-head printers and stationary-head printers are discussed.
The ability to match all of these lamp characteristics to the optical and physical properties of a UV curable material widens the range of tools available to the process designer, and yields more efficient and stable UV curing processes in production.
Document Type: Research Article
Publication date: 2001-01-01
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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