Graphic Design & Printing Technology

Graphic Design & Printing Technology

Alcohol dampening solution:- Iso Propyl Alcohol (IPA) is added to conventional
dampening solution at 10 to 15%. IPA reduces the surface tension of water
and thus considerably increases the wetting power. IPA makes dampening film
more uniform and allows a thinner application.

Other press room chemicals

Other chemicals used in a press room are plate developers, gumming and
preserving chemicals, image removers, blanket lift, plate cleaners (special
cleaners for conventional plates and thermal plates), deposits remover, wash
up solution.
Practical Activity

Paper

1. Collect different kinds of paper.


2. Find out the GSM of a given paper sample.


3. Collect different size of paper (Conventional and International paper sizes).


4. Collect different types of cover paper.


5. Identify various kinds of paper and boards used for different printing jobs
   such as notice, cover printing, visiting card, envelope and packaging
   industry


6. Paper calculation method for sheets, boards and reel.


7. Different paper testing methods
   
   
   • Curl test
   
   
   • Grain direction test
   
   
   • GSM test
   
   
   • Moisture content test of paper
   
   
   • Paper smoothness test
   
   
   • Roughness test
   
   
   • Gloss test
   
   
   
   


8. List out the paper warehousing methods.

2. Ink

1. Use of various types of inks on different types of paper.


2. Ink mixing processes.


3. Ink calculation method.


4. Ink testing methods.