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Does the Halftone Print Still Need a Photographic Quality?

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Many patented screening techniques were brought to the market during the last decade as a challenge to the conventional ones. The “photographic quality” prevailed in their advertised advantages to indicate on a higher definition of prints thereby produced. However, for example, in FM and error diffusion screening the increase of spatial resolution is accompanied by the structural non-uniformity and loss of tone rendition. Lower printability has to be compensated by reduction the NSR of a printing system, i.e. by the use of a finer, hence costly, consumables and plate-ink-paper interaction. That resulted in poor practical implementation of these techniques in spite of their availability in the prepress software and equipment of the most vendors.

To the contrary, resolution and sharpness are improved in the Adaptive Screening technology with no effect on the printability of a halftone structure. For the stationary image area it stays exactly the same as in a widely used conventional methods. At the same time, the halftone dots or the parts thereof no more exist at contour and fine detail and don't destroy the latter. As our experimental printing shows, the effect of an improvement is different for various kinds of jobs and printing conditions. So, this effect is to be discussed with taking into account:

- the sampling factor (SF);

- screen ruling value;

- dot pattern geometry for the stationary image area.
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Document Type: Research Article

Publication date: 2002-01-01

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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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