Advance Litho Quiz 1

Front 1

The Perfect Process

Back 1

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

Front 2

What are the influence of the printing plates?

Back 2

-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

Hint 2

SSSMTH

Front 3

What are the influence surface Tension Basics?

Back 3

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

Front 4

What are the influence of inking rollers?

Back 4

-Characteristic of roller coverings
-surface tension of the roller material
-Surface roghness
-Pressure in the nip(throw-on)

Hint 4

CSSP

Front 5

What are the influence of the blanket ?

Back 5

-Surface tension of the blanket
-Surface roughness
-Compressibility
-Ink acceptance and ink transfer
-swelling/Hardness/release behavior

Hint 5

SSCI

Front 6

What are the influence of the ink?

Back 6

-Surface tension(in relation to dampening solution)
-Viscosity, Tack, etc.(Rheological Proper.)
_Temperature Behavior
-Emulsification Behavior
-Ink composition
-Drying behavior

Hint 6

SVTEID

Front 7

What are the influence of the dampening solution?

Back 7

-Water hardness?Impurities
-additives to the solution
-pH value, surface tension
-Rheological Properties
-Rheological Properties dependence on temperature

Hint 7

WAPRR

Front 8

What are the influence of the substrate?

Back 8

-Print-ability properties
-pH value
-Work ability properties(stretch/picking)

Hint 8

PPW

Front 9

What are the printig pess?

Back 9

-Designof the print unit
-Design of the inking unit
-Design of the dampening unit
-Design of the ink feed system(metering)
-Temperature control

Hint 9

DDDDT

Front 10

What is the coventional printing with master?

Back 10

SCREEN RELIEF LITHO GRAVURE
letterpress Flexo Offset waterless litho ........................ ...Ink..... ........................ ........................Substrate......................... .....Prepress-->Press-->Post press..........