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Home >How Colour Copiers Work : Operating Principles of Colour Copiers

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Operating Principles of Colour Copiers

 

Scanning the original (Scanner)

We perceive colour based on light information reflected off objects that reaches our eyes. We perceive an apple as red because of the red light reflected off the surface of the apple. The scanning component of a copier operates based on the same principle. It recognises the colours of the original using light information reflected off it.

Printing (Printer)

A printing press reproduces an array of colours by combining ink of four colours: yellow (Y), magenta (M), cyan (C), and black (Bk). Based on colour data converted from the light data, the copier's printing component uses toner of the three primary colours of pigment, yellow (Y), magenta (M), and cyan (C), plus black (Bk), to reproduce the colours of the original document.

High-quality colour image reproduction

The quality of colour image reproduction is affected by factors dependent on the copier, including the technological level of the scanner, the accuracy with which the image signal is converted, the reproduction precision of the output device, the properties of the toner, and the paper quality. The bizhub colour Series employ advanced computational processing to improve the accuracy of the above elements and produce results that closely match the characteristics of the human sense of sight. In addition, they incorporate image quality adjustment functions that allow subtle manipulation of colours for even more lifelike reproduction of colour originals.

The Three Primary Colours of Pigment


The three primary colours of pigment are yellow (Y), magenta (M), and cyan (C). Mixing these three colours equally produces black. Examples of reproducing colours by mixing the three primary colours of pigment are colour copiers and colour printers.
 

Image Quality Adjustment


By adjusting qualities such as the hue, brightness (value), chroma, and colour balance, the characteristics of copies of the same original can vary as shown below. The bizhub colour Series copiers allow precise adjustment of each of these items.


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