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A Journey into Printing
by Conrad Presione
http://www.fewprinting.com
Following are the most commonly used printing processes.
Each process produces a distinct, splendid and elegant
product. Every process has its own distinct characteristic.
The Surface Printing process is the most widely used
process. This uses a print cylinder covered in light
weight urethane. The desired design is applied to the
cylinder or drum by removing the material around the
desired design leaving the design a raised surface. You
can print by applying ink to the raised surface and then
pressing the inked roller against the surface to be printed
on, thereby achieving a design transfer. Each color of your
design uses a different roller.
Mini prints and country patterns can be produced by using
Flexographic Printing. Delicate designs and tonal effects
can be achieved when using this process. It is very
similar to Surface Printing only the print cylinders are
made of a flexible material like rubber.
The screen printing process is mainly used to produce
special and custom-made products. It can be achieved either
in rotary or flat screens. The most common hand screens
popularly known as silk screen printing are done with the
help of flat mesh screens by holding inside the frame.
Cover up the screen area with a resist like wax that will
block all the screen openings. Please make sure the design
image area which was reproduced on the mesh screen is not
covered by the resist. Now, apply ink to the flat screen.
Push the ink along the screen surface using a rubber
squeegee. You can successfully apply ink to the design area
onto the wallcovering except those already blocked areas.
You will need one screen for each color.
Similar in process to the Screen printing is the Rotary
Screen process which produces bright and solid color
designs. It uses a rotary or cylindrical screens. The ink
is fed into the image area of the screen using and
internal squeegee blade. The Resist covers the screen
except the desired image area. Special 3 dimensional inks
are used to give the product a unique look. This process
was invented to replace and speed up the Hand Screen
Printing process.
Gravure printing is the costliest process of all. It uses
special photochemical process and copper plating. Gravure
printing is very famous as it can reproduce a complete
range of visual effects and render an almost photographic
effect. You can achieve a complete and constant color
deposit which ranges from 100% full tone to 5% tone.
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