Design For Print: Key aspects of Colour and Print_

Offset lithography

Etched into aluminium, wrapped around a cylinder transfer of ink onto offset rubber blanket this then transfer to the print surface.

http://www.youtube.com/watch?v=VpAuDrs5ocg

Web offset machine - 

High speed

Run on rolls not sheets

Folding built in

Rotogravure 

Copper plate,with mirror image,

Transfers ink directly to the print surface, usually on rolls. Durable plates and great for longer print runs.

Typical print-

High volume, durable, magazines newspapers, back notes

Flexography

A positive, mirror image rubber polymer plate, on a cylinder, transfers a sticky ink directly to the print surface. Usually roller fed

Packaging designs - High quality print, Bottles, Cartons

Digital printing - the reproduction of images by translating the digital code direct from the computed to a material an intermediate physical process.

Ideally suited to short run or specials on a range of print media from paper to metal

Screen print - A print making technique that uses a woven mesh to support an ink blocking stencil.

Pad printing, A printing process that can be transferred onto a 2d image onto a 3d object

Key aspects of colour theory:

Understanding the practical use of colour.

Subtractive 

CMYK

Additive

RGB

Subtractive colour

The more you mix the darker the colour becomes

Additive Colour

The more you ad the lighter the colour becomes

CMYK vs RGB

Colour space comparison.