Artists have different parameters to, for example, colour scientists, for considering the quality of the finished image. An analysis of the work is based on an artist's conception of the work and a subjective assessment of print surface, colour and image quality, which although may appear to be based on the same criteria as a reproduction, the impact on the viewer is quite different. This prese...

In the operation of a printing press, color control depends very much on the operator's skill and experience. However, with the development of the color control system by color scale, the conventional operator's skill is being replaced by numerical evaluation of color quality, and productivity is greatly enhanced. Recently, it has been attempted to measure the whole print image and develop a co...

Calls for blind proficiency testing in forensic science disciplines intensified following the 2009 National Academy of Sciences report and were echoed 2016 by President’s Council Advisors on Science Technology. Both practitioners scholars have noted that “open” tests, which analysts know they are being tested, allow test-taking behavior is not representative routine casework. This study reports...

The design for the environment (DfE) tools are used to include the environmental objectives into all of the company’s processes, and their suppliers and customers if possible. This paper investigates the benefits of applying DFE tools in the graphic arts industry, specifically the book production process. A present book production process in a print shop was redesigned taking into account the q...

We demonstrate the use of photometric stereo to enhance the recovery of both visible and plastic fingerprints. Examples are given that show the recovery of visible prints from rough surfaces and a plastic print from a patterned surface. This approach improves the quality of the print by reducing the effects of variations in the background surface. It provides a cheap and effective way to improv...

This paper proposes a method to verify the finger print of any individual based on ridge edge detection. MATLAB is used as the programming tool. The method detects the ridge endings and bifurcations of an individual finger print. The quality of the finger print image is enhanced by preprocessing for better performance. The verification, takes into account of the relative positions and alignment...

In the newspaper printing industry, offset is the dominating printing method and the use of multicolour printing has increased rapidly in newspapers during the last decade. The offset printing process relies on the assumption that an uniform film of ink of right thickness is transferred onto the printing areas. The quality of reproduction of colour images in offset printing is dependent on a nu...

The effects of coating formulation on thermal characteristics of coating layers (namely thermal diffusivity, specific heat capacity and heat conductivity) were systematically studied and their impact on xerography print quality was evaluated. Model coatings were prepared using ground calcium carbonate or kaolin pigment mixed with styrene butadiene latex binder in various proportions (from 6 to ...