In this work we use laser direct-write (LDW) to fabricate patterned [Ru(dtb-bpy)3](PF 6 )2 electroluminescent devices under ambient processing conditions. Device fabrication is accomplished via laser micromachining of a transparent conducting oxide top electrode, LDW printing the active organo-metallic material, and vapor depositing the bottom electrode. Nuclear magnetic resonance spectroscopy ...

Hongzheng Jin (SID Student Member) James C. Sturm Abstract — A transfer-printing method for the patterning of thin polymer layers is described. A hard stamp with a raised feature is brought into contact with a spin-coated organic film under elevated pressure and temperature to break the films. The patterned film is then transfer printed onto the devices. This method is used to print red/green/b...

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 Transfer Efficiency designed to predict the color transmittance spectra of multi-color prints by taking into account the transfer influence of...

Automated visual inspection of industrial textile printing has the potential to increase the overall print quality. In this article, we investigate whether all printed colors can be detected by CCD cameras and determine the color measurement precision.Occurring deviations in color values of homogenouesly colored textile patches are explained by the dichromatic reflection model. An extra clue is...

The recent increase in the use of desktop color applications has increased the need for color management systems, which in turn depend upon device profiles to exchange color information. Device profiles for color printers are based upon printer models. The typical desktop-color user has a binary (halftone) printer. Many models have been proposed for binary color printers; these are traced begin...

CMYK color separation is a technique commonly used in printing to reproduce mutli-color images. However, the color planes are generally not perfectly aligned with respect to each other when they are rendered by the imaging stations. This phenomenon, called color plane mis-registration, causes gap and halo artifacts. Trapping algorithms aim to reduce these artifacts by scanning through an image,...

A framework for clustered-dot color halftone watermarking is proposed. Watermark patterns are embedded in the color halftone on per-separation basis. For typical CMYK printing systems, common desktop RGB color scanners are unable to provide the individual colorant halftone separations, which confounds per-separation detection methods. Not only does the K colorant consistently appear in the scan...