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10 Cards in this Set

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The Perfect Process
The perfect offset printing process depends on many chemical and physical specifics of the materials and components involved in the process.

Simply stated we want to print the thinnest ink film with the least amount of water or pressure
What are the influence of the printing plates?
-Surface tension of the the ink accepting area
-Surface tension of the non-images areas
-surface roughness(non-image area)
-Micro-structure of the non image area
-Type of material
-How plate was created
SSSMTH
What are the influence surface Tension Basics?
When a film of ink and film of water come into contact with one another, the decisive factor is not whether there is some sort of repulsion, but in which liquid cross section splitting occurs,

Offest ink have higher cohesion properties than water
What are the influence of inking rollers?
-Characteristic of roller coverings
-surface tension of the roller material
-Surface roghness
-Pressure in the nip(throw-on)
CSSP
What are the influence of the blanket ?
-Surface tension of the blanket
-Surface roughness
-Compressibility
-Ink acceptance and ink transfer
-swelling/Hardness/release behavior
SSCI
What are the influence of the ink?
-Surface tension(in relation to dampening solution)
-Viscosity, Tack, etc.(Rheological Proper.)
_Temperature Behavior
-Emulsification Behavior
-Ink composition
-Drying behavior
SVTEID
What are the influence of the dampening solution?
-Water hardness?Impurities
-additives to the solution
-pH value, surface tension
-Rheological Properties
-Rheological Properties dependence on temperature
WAPRR
What are the influence of the substrate?
-Print-ability properties
-pH value
-Work ability properties(stretch/picking)
PPW
What are the printig pess?
-Designof the print unit
-Design of the inking unit
-Design of the dampening unit
-Design of the ink feed system(metering)
-Temperature control
DDDDT
What is the coventional printing with master?
SCREEN RELIEF LITHO GRAVURE
letterpress Flexo Offset waterless litho ........................ ...Ink..... ........................ ........................Substrate......................... .....Prepress-->Press-->Post press..........