printing types

8/6/2019 Printing Types

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Printing Types..

By Amber Redican


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Gravure

Gravure is a printing method in which an image is applied to a printingsubstrate by use of a metal plate. The image to be reproduced is etched

into the metal plate, sometimes with the use of a laser . The metal plate is

put in ink during the process and then wiped clean before putting it on the

substrate. Gravure, is a long process that also costs quite a bit more than

other printing methods. To create a Gravure print you have to be highly

skilled and patient, but even though it takes a long time, with lots of

processes and waiting, the result is very good. You do not need technology

for this, apart from ink, cloths and water. End result:


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Letterpress

Letterpress printing is relief printing of text and image using a press with a"type-high bed" printing press and movable type, in which a reversed,

raised surface is inked and then pressed into a sheet of paper to obtain a

positive right-reading image. In addition to the direct impression of inked

movable type onto paper or another receptive surface, letterpress is also

the direct impression of inked printmaking blocks such as photo-etched

zinc "cuts" (plates), linoleum blocks, wood engravings, etc., using such a

press.


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Screen PrintingScreen printing was first used by the Chinese almost 2000 years ago. They used human hair stretched across a

wooden frame to form the screen. To that they attached a stencil made from leaves stuck together intodifferent shapes. This was probably the first application of screen printing ever. Equipment Used In Screen

Printing No matter what kind of screen printing machine you have, there is some basic equipment that will

be required. The stencil or screen is of prime importance since it determines the design and image output.

It refers to the frame, the mesh and the photosensitive material on which the image is created. The

Squeegee is the rubber held in a rigid handle. Ink of course. The substrate refers to the surface on which

the design is to be printed. The machine base, which holds the substrate and allows the screen to print on

it and is often the base of the entire screen printing unit. Applications OfScreen Printing The substrate or

surface on which screen printing can be carried out are too many to be named. Any surface that can bestretched and printed on is a surface for screen printing. Posters, computers, signs, flyers, advertisements

on buses, t-shirts and even watch dials are screen printed. It doesnt take long to make, and costs very

little. Anyone can do it.


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Offset Litho

Offset lithography is a printing technique which is widely used around the world. Mostbooks, newspapers, and magazines are printed using offset lithography, and this

printing technique is widely regarded as the workhorse of printing, because it is

fast, efficient, cheap, and relatively easy. The first step in offset lithography is

making a plate with the image to be printed. If the image is in black and white,

only a single plate is required, because the plate can simply be inked with black

ink. Color images are produced using a four-color separation process, in which four

different plates are made for the cyan, magenta, yellow, and key (black) inks; when

the plates are printed, the colors blend together visually, creating a color image.

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