offset printing(1)
Post on 30-Oct-2015
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OFFSET PRINTING In Depth 1 BY AHMED HUSSEIN
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DeskJet OutdoorInk jet ( )( )
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:1- Prepress
2- Press 3- Postpress .
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prepress(1)
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:1- 2- 3-
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1- PC & Mac * Workflow System
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Workflow System . Esko, Heidelberg, Cero
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CMKYCMYkY
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2- + ( +) 4 C,M,Y,K
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1 - 2 - 3 - 30
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Xrite
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0.150.30... Structure of Offset plates
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3-
. . 4 C,M,Y,K See + exposeSee - exposeDigital Expose(2)Analogue Expose(1)
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1- 2- 3- )
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( ) 220-270 (conventional or thermal plates )
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CTP conventional or thermal plates
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( ) ( )
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Ugra Test PLATE SCOP , IC PLATE X-RITE
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Plate ScopeUgra Test
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Press(2)
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( ) . ()
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1- : .2- : - - - - 3- 4- 5-
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:1- Damping rollers2- 3- 4- Ink rollers5- Plate roller6- Blanket roller7- Impresser cylinder
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:1- Sheet offset2- Web offset
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1- Sheet offset fed 10% ph =4.5-5.5 cold set ( ) * 77*103-79-103 -41*50-60.5*74*
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1- Web offset fed 10% ph =4.5-5.5 heat set Heidlberg , Kba , Manroland
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Set off SunChemical(Hartman) , Flient, * xrite - Gretagmakbth
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Post Press(3)
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:1- 2- .
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1-
:1- .2- .
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3- Folding & Creasing . 8 16 3264Folding & Creasing 1Folding & Creasing 2Folding & Creasing A
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:.- ( ) - ( ) ( ) - SEE
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5-
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2-
( ) ( ) ()() :1- 2- ( )
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