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Paper Transport in Duplex Color Radiation Fusing, Continuous and Flash

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We had reported earlier (NIP 18) the use of high intensity continuous radiation and pulsed radiation for color independent radiant fusing. We had found that there is a potential if special developed sharp melting dry ink is used.

At duplex fusing of sheet substrates with electrophotographic engines of duplex loop type the paper passes twice the fusing station with the risk of reheating the first image above softening point. We have analyzed different methods of paper feeding in the fusing area: With radiant fusing the heating time is relatively long with the risk of backside damage. Thus a non-contact paper feeding in the heating zone followed by a non contact paper feeding in the following cooling zone is required.

At flash fusing the energy is incorporated into the surface for short time intervals only and backside problems are not expected. To prove this we evaluated the time dependant backside temperature of the substrate after flash fusing with a fast pyrometer. We could prove that backside image artifacts of toner back side layers in full color printing start well above the flash energy density necessary for fusing. Thus conventional contact paper transport means like KaptonĀ® belts are sufficient for duplex color flash fusing of sheet materials.
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Document Type: Research Article

Publication date: 2003-01-01

More about this publication?
  • 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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