Concept

Presse typographique

Publications associées (100)

MICROFABRICATED MOLDS FOR INKJET APPLICATIONS

Jürgen Brugger, Vahid Fakhfouri, Kristopher Pataky, Yun Luo

Inkjet printing (IJP) is a contactless method of printing and has found wide applications in the packaging and printing industries. In order to get patterned micro-structures with specific morphology via inkjet technology, predefined molds from SU8 with di ...

2006

An Ink Spreading Model for Dot-On-Dot Spectral Prediction

Roger Hersch, Adish Kumar Singla

Due to increasing printing accuracies and the possibility of printing several droplets at the same pixel location, there is a renewed interest in dot-on-dot printing models. In the present contribution, we improve a dot-on-dot spectral prediction model rel ...

2006

An Ink Spreading Model for Dot-On-Dot Spectral Prediction

Roger Hersch, Adish Kumar Singla

2006

Spectral reflection and dot surface prediction models for color halftone prints

Roger Hersch, Patrick Emmel, Frédérique Crété

The proposed new spectral reflection model enhances the classical Clapper-Yule model by taking into account the fact that proportionally more incident light through a given colorant surface is reflected back onto the same colorant surface than onto other c ...

2005

Spectral prediction and dot surface estimation models for halftone prints

Roger Hersch, Patrick Emmel, Frédérique Crété

We propose a new spectral prediction model as well as new approaches for modeling ink spreading which occurs when printing ink layer superpositions. The spectral prediction model enhances the classical Clapper-Yule model by taking into account the fact tha ...

SPIE-Int. Soc. Opt. Eng2003

A Prediction Model for Reflection on Varnished Metallic Plates

Roger Hersch, Mathieu Hébert, Patrick Emmel

Several models predict the reflectance of a rough metallic surface. They are however not adapted to the surfaces used in the packaging industry, such as boxes made of printed metallic plates. For printing purposes, metallic surfaces need to be varnished. L ...

Society for Imaging Science and Technology2002

Parameterizable fonts based on shape components

Roger Hersch, Changyuan Hu

We propose a new, highly flexible font description method that explicitly describes characters as assemblies of parameterizable shape components. By varying global parameters, we can derive fonts that vary in weight, condensation, and shape. Fonts made of ...

2001

Predicting transmittance spectra of electrophotographic color prints

Roger Hersch, Patrick Emmel, Safer Mourad

For dry toner electrophotographic color printers, we present a numerical simulation model describing the color printer response based on a physical characterization of the different electrophotographic process steps. The proposed model introduces a Cross T ...

Society of Photo-Optical Instrumentation Engineers2001

Neugebauer and Demichel: dependence and independence in n-screen superpositions for colour printing

Roger Hersch, Isaac Amidror

The Neugebauer equations and the Demichel equations on which they are based are one of the basic tools for modeling colour printing systems that use the halftoning technique. However, these equations implicitly assume that the colour ink distributions in t ...

Wiley2000

Predicting Monochrome Color Transmittance Spectra of Electrophotographic Prints

Roger Hersch, Patrick Emmel, Safer Mourad

We create a computer based numerical model to predict the color spectra of printed patches on dry toner electrophotographic printers. The goal of this research is to obtain a simplified model describing the input-output behavior of the printers based on th ...

Society for Imaging Science and Technology2000

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