Research of the Different Printing Techniques

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    Research of the different printing

    techniques

    Luke Bradley

    &Mark Neale

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    Many methods have been devised since very early times to

    produce a surface from which a number of identical

    impressions could be taken. Printing of a sort could be said to

    exist as soon as the Sumerian made a triangular pointed tool

    to impress cuneiform symbols on clay, or used a hollowed out

    seal, sometimes cylindrical in form, to mould a figure in relief

    on the same material.

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    All information taken from

    http://www.roeandmoore.co.uk/Pr

    inting%20Techniques.asp

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    Intaglio

    Indents or irregularities are printed onto a plate. A heavy ink or

    other pigment is applies to the plate and then later removed from

    the surface before printing but the pigment remains in the

    indentations. Under pressure these paterns of ink may be

    transferred to a plastic material such as a damp paper, clay, meltedsulphur or wet plaster on the. Etching and engraving are generally

    printed by this method.

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    Woodcut

    Woodcut is one of the oldest methods used

    in the fine art of printmaking. The artists

    design or drawings are made on a piece of

    wood (usually Beachwood). And the

    untouched areas are then cut away using a

    Chisel with a concave blade leaving the

    image which is then inked. Woodcut prints

    are produced by pressing the selected

    paper onto the inked image.

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    Line Engraving

    This is done using a copper plate and a cutting tool called a graver

    or. The cutting is made direct in the copper with a square or lozenge

    graver. In these prints the classical manner of holding the graver has

    been adopted: Against the palm, the blade between the second

    finger, and thumb driven in the line of the forearm. The tool issharpened with under surfaces true, parallel and without small

    turned-up facets used by lettering engravers.

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    EtchingIn principle the plate is sealed with a protected with acover which resists acids. By applying acids of different

    strengths to these openings for different amounts of time

    the metal is eaten away to a greater or lesser extent. The

    coatings used may be applied by dabbing or rolling on

    heated plates essentially they should resist acid perfectly,adhere to the plate, and support indefinitely needling or

    scratching without cracking off. The Coatings used usualy

    consist of bitumen, beeswax and resin

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    AquatintAlso using acid to eat away the plate but it isagain applied in areas rather than in patterns.In one method, resin dust is deposited on theplate, the plate is then heated to make thegrains melt and adhere to it, and areas ofdifferent shades are etched by successive

    stopping's during the progress of the biting.Graduations of strength are also made bymanipulation of the acid, by rocking theplate, or by applying acid in focused parts.Normally this method gives characteristicallyopaque tones in prints in contrast to the

    transparent tone in the soft-groundtechnique-although a heavier coverage ofresin will reduce this, and any previous workon a the plate will, of course, be exposed toattack by acid.

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    Drypoint

    This method involves the use of a point (steel,sapphire, or diamond) directly on the plate, oneof the simplert more skilled methods of workinga plate. However owing to the fragility of the

    result in printing and the extreme variety of lineobtained by different angles of cutting, it is foundto involve greater manual dexterity than themore mechanically elaborate etching process.This flange may be double, fine and sharp like aknife-edge; single and strong; or single and saw-edged.

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    Mezzotint

    Mezzotint - (mezzo = half and tinta = tone), is a reverse engraving

    process used on a copper or steel plate to produce illustrations in

    relief with effects of light and shadow. The surface of a master plate

    is roughened with a tool called a rocker so that if inked, it will print

    solid black. It was widely used in the 18th and 19th centuries toreproduce portraits and other paintings. But later on was caused to

    become obsolete and out dated.

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    Lithography

    Printing technique using a planographic process in whichprints are pulled on a special press from a flat stone ormetal surface that has been chemically sensitized so thatink sticks only to the design. Originally the process was used

    on stone. The process starts with drawing the image on thestone by using a greasy black lithographic pencil. Theseusually take a few days, depending on the size andcomplexity of the image. The main problem is that theimage is permanent and can not me erased. Smallcorrections can be made with a sharp knife, but major

    corrections are needed, it is necessary to start again on anew stone.

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    Giclee

    A giclee is a computerized reproduction technique in which the

    image is generated from a digital file and printed by a special ink jet

    printer, using ink, acrylic or oil paints. Giclee printing is one of the

    most accuracy and richness of colour available in any reproduction

    techniques.It can be printed on paper or canvas and re-touched by hand with

    paint etc. Today this is a very common form of printing or

    reproducing art work to a high quality. Many artists reproduce their

    paintings onto paper as signed limited editions, using this method

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    Digital

    Digital

    Photocopying

    Laser printing

    Inkjet

    Desktop publishing

    Digital screen printing

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    Photocopying

    A photocopier is a machine that makes paper

    copies of documents and other visual images

    quickly and cheaply. The first widely used copy

    machine for offices was invented by James

    Watt in 1779.

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    Laser printing

    The laser printer was invented at Xerox in

    1969 by researcher Gary Starkweather, A laser

    printer is a common type of computer printer

    that rapidly produces high quality text and

    graphics on plain paper.

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    Inkjet

    Inkjet printers have certainly come a long way in the last two

    decades. And although we didnt see them in the stores until

    the 1980s, it was as far back as the mid 1970s when printer

    companies recognised that inkjet technology was going to be

    the wave of the future. But initially, companies were faced

    with the challenge of creating an inkjet printer that was

    affordable while at the same time could provide quality

    printouts. The more popular type of inkjet printer was

    invented by Siemens in 1977. These printers, sprayed ink onlywhere needed and although they were less expensive, they

    were slower than continuous inkjet printers.

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    Desktop publishing

    in the mid 1980s, Apple Computer, Adobe,

    Aldus and Hewlett-Packard each produced key

    technologies that, when combined, allowed

    graphic designers, publishers and pre-press

    professionals to bring the whole publishing

    process in-house.

    Desktop publishing began in 1985 with theintroduction of MacPublisher.

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    Digital screen printing

    Screen printing is a printing technique that uses a woven

    mesh to support an ink-blocking stencil.

    Screen printing first appeared in a recognizable form in China

    during the Song Dynasty . Japan and other Asian countries

    adopted this method of printing.

    Screen printing was largely introduced to Western Europefrom Asia sometime in the late 18th century, but did not gain

    large acceptance or use in Europe until silk mesh was more

    available for trade from the east and a profitable outlet for

    the medium discovered.