Concept

Letterpress printing

Related publications (50)

Recovering Neugebauer colorant reflectances and Ink-spreading curves from printed color images

Spectral reflection prediction models, although effective, are impractical for certain industrial applications such as self-calibrating devices and online monitoring because their calibration requires specific color-constant calibration patches. Using the ...

Wiley-Blackwell2014

High-resolution 1D moirés as counterfeit security features

Jürgen Brugger, Roger Hersch, Katrin Sidler Arnet, Victor Javier Cadarso Busto, Sylvain Chosson

A moire is an interference pattern that appears when two different periodic structures are overlaid. The image created is extremely sensitive to small variations in the original layers and is thus very interesting for anti-counterfeit protection. We presen ...

Nature Publishing Group2013

A novel fuel processing platform for micro-scale solid oxide fuel cells

Paul Muralt, Thomas Maeder, Bo Jiang, Dimos Poulikakos

Recently, the development of micro-scale solid oxide fuel cells (µ-SOFCs) has become a promising research topic in the area of portable energy production. A µ-SOFC system, which can provide 1 to 2 W electrical power under an operating temperature of 550°C ...

2012

Flexible and Robust Calibration of the Yule-Nielsen Model for CMYK Prints

Thomas Bugnon

Spectral reflection prediction models, although effective, are impractical for certain industrial applications such as self-calibrating devices and online monitoring because of the requirements imposed by their calibration. The idea emerged to make the cal ...

EPFL2011

Why Going Towards Plastic and Flexible Sensors?

Nico de Rooij, Danick Briand, Caglar Ataman, Jérôme Courbat, Francisco Molina Lopez, Andres Felipe Vasquez Quintero

The emergence of the fields of wearable devices, e-textiles and smart packaging brings new requirements on electronics and sensing systems. One or a combination of the following properties can be desired for their proper operation and to meet the functiona ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2011

Constrained Acquisition of Ink Spreading Curves From Printed Color Images

Roger Hersch, Thomas Bugnon

Today's spectral reflection prediction models are able to predict the reflection spectra of printed color images with an accuracy as high as the reproduction variability allows. However, to calibrate such models, special uniform calibration patches need to ...

2011

Printed array of thin-dielectric metal-oxide-metal (MOM) tunneling diodes

Dirk Grundler, Hagen Klauk

A large area array of metal-oxide-metal (MOM) tunneling diodes with an ultrathin dielectric (∼3.6 nm aluminum oxide) have been fabricated via a transfer-printing process. The MOM diodes exhibit an excellent tunneling behavior that is suitable for rectifyin ...

American Institute of Physics2011

Querypoint Debugging

Claude Petitpierre, Salman Mirghasemi

To fix a bug, software developers have to examine the bug-gy execution to locate defects. They employ different ap-proaches (e.g., setting breakpoints, inserting printing statements in the code) to navigate over buggy execution and inspect program state at ...

2010

Analyzing halftone dot blurring by extended spectral prediction models

Roger Hersch, Mathieu Hébert

Spectral prediction models for halftone prints generally assume homogeneously thick and sharply edged ink dots, i.e., bilevel halftones. In real prints, the ink thickness often decreases at the boundaries of the ink dots, thereby forming continuous-level h ...

2010

Calibrating the ink spreading curves enhanced Yule-Nielsen modified spectral Neugebauer model with the two-by-two dot centering printer model

Roger Hersch, Romain Rossier

The Yule-Nielsen modified spectral Neugebauer model enhanced for accounting for ink spreading in the different ink superposition conditions (EYNSN) requires measuring the reflectances of halftone calibration patches in order to compute the ink spreading cu ...

2009

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