Ink for Web Offset

Ink feed control in a web-fed offset printing press

Automatic and robust ink feed control in a webfed offset printing press is the objective of this work. To achieve this goal an integrating controller and a multiple neural models-based controller are combined. The neural networks-based printing process models are built and updated automatically without any interaction from the user. The multiple models-based controller is superior to the integr...

OFFSET INK TACK AND RHEOLOGY CORRELATION: - I: ink rheology as a function of concentration

This paper is divided into two parts with the aim to compare visco-elastic structure relaxation of a presheared offset ink with observed ink tack development on a representative absorbent multi-coated paper. The methods used include oscillatory and shear rheometry in part I, and comparison with the SeGan Ink Surface Interaction Tester (ISIT) in part II. By diluting the ink with mineral oil, a p...

Reducing Ink Consumption on Press: Using GCR or UCR Separations and Re-separations for Offset Printing

An Architecture for Ink Annotations on Web Documents

There have been recent improvements in document technologies like the standardization of object interfaces to access and manipulate the properties of web documents. There has also been significant progress in pen based computing for recognition of digital ink in desktops, tablets and handheld devices. These have necessitated a need for further research on annotation architectures for digital do...

Distribution of Offset Ink Constituents in Paper Coating and Implications for Print Quality

The implications arising from the distribution of offset ink components in a paper coating structure are presented. The work focuses on two mechanisms causing differential distribution of ink constituents, namely (a) adsorption chromatography, resulting from coating pigment chemistry and morphology variables, and (b) latex-oil diffusional interaction. Adsorption chromatographic fractionation an...