OFFSET PRINTING In Depth 1 BY AHMED HUSSEIN

DeskJet OutdoorInk jet ( )( )

:1- Prepress

2- Press 3- Postpress .

prepress(1)

:1- 2- 3-

1- PC & Mac * Workflow System

Workflow System . Esko, Heidelberg, Cero

CMKYCMYkY

2- + ( +) 4 C,M,Y,K

1 - 2 - 3 - 30

Xrite

0.150.30... Structure of Offset plates

3-

. . 4 C,M,Y,K See + exposeSee - exposeDigital Expose(2)Analogue Expose(1)

1- 2- 3- )

( ) 220-270 (conventional or thermal plates )

CTP conventional or thermal plates

( ) ( )

Ugra Test PLATE SCOP , IC PLATE X-RITE

Plate ScopeUgra Test

Press(2)

( ) . ()

1- : .2- : - - - - 3- 4- 5-

:1- Damping rollers2- 3- 4- Ink rollers5- Plate roller6- Blanket roller7- Impresser cylinder

:1- Sheet offset2- Web offset

1- Sheet offset fed 10% ph =4.5-5.5 cold set ( ) * 77*103-79-103 -41*50-60.5*74*

1- Web offset fed 10% ph =4.5-5.5 heat set Heidlberg , Kba , Manroland

Set off SunChemical(Hartman) , Flient, * xrite - Gretagmakbth

Post Press(3)

:1- 2- .

1-

:1- .2- .

3- Folding & Creasing . 8 16 3264Folding & Creasing 1Folding & Creasing 2Folding & Creasing A

4-

:.- ( ) - ( ) ( ) - SEE

5-

2-

( ) ( ) ()() :1- 2- ( )