Name of the University : Jadavpur University
Department : Printing Engineering
Degree : M.Tech
Subject Code/Name : Printing & Packaging Material
Year/Sem : I/I
Website : jaduniv.edu.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/dspace.jdvu.ac.in/5399-Printing%20&%20Packaging%20Material%20Technology.pdf
Printing & Packaging Material Technology Question :
M. TECH. In Printing engineering And Graphic Communication :
First semester Examination 2014 :
Use separate answer script for each part PART :
Related : Jadavpur University Printing Surface Preparation B.E Question Paper : www.pdfquestion.in/5393.html
Answer 50 marks :
1. a) What are the properties the base of photographic films should have? What are the different types of materials used as base of photographic films?
(b) What do you mean by subbing? How subbing is achieved?
(c) Discuss the ionic structure of silver halide grain?
(d) Discuss the varying properties of photographic emulsions o far as image quality is concerned.
(e) Discuss in brief on PulsedXenon Lamps,
2. a) Why Aluminium is selected as base metal for Offset image carrier?
(b) Discuss in brief the different method adopted for improving the surface texture of the base Al before application of light sensitive coating in Offset image carrier preparation. –
c)What kind of surface treatment method is to be adopted to improve the adhesion of the diazo coating on grained Al plate?
(d) Discuss in brief what are the different types of Diazo compounds used in additive presensitized plates.
3. a) What happens when one-step additive developer is applied on additive diazo plates during development?
(b) Thermal type Computerto-plate on Albase produces sharp hard dot. Why?
(c) Discuss in brief the basic structure of waterless offset plate.
4. (a)Discuss the basic structure of solid sheet photopolymer plates used in flexography,
b)What are the different types of photopolymers used in flexographic image carrier preparation?
(c) Define photoinitiator. How does it work? Give some example of photoinitiator, d)What are the advantages and disadvantages of photopolymer plates? 5122)520
5.a) What are advantages and disadvantages of rubber type flexo plates?
(b) What are the different types of rubber materials used in flexo plates?
(c) What are the advantages of computer to plates?
Printing And Packaging Material Technology :
Time : Three hours
Full Marks : 100
PART – II :
1. a) What do you understand by ISO standard paper? How they are utilized in printing industry?
b) Determine the footage of a roll of substance 55 book, with caliper .004 inch and a roll diameter of 40 inches, that is wound on a -inch core. 3
c) Determine the weight of a roll of newsprint that measures 36 inches wide and 40 inches in diameter. The roll is wound on a 3-inch core. The basis weight of the stock is 30 lbs, with a caliper of .0025 inch. Basic size of the newsprint is 24 inches x 36 inches. 3
2. a) Which basic factors should one keep in mind during impact printing ink formulation? 3
b) Write down the general characteristics of lithographic inks. 6
c) Why finest ink film thickness is produced in offset lithography in comparison to other printing processes? 3
d) Explain the quickset drying mechanism for lithographic inks. 8
3. a) What are the main ingredients of flexographic ink?
b) On which factors does the choice of these ingredients depend?
c) Write down the formulation of flexographic paper ink.
d) What are the main features of gravure pigments?
e) Write down the basic formulation of a typical gravure ink.
4. Write short notes on the following.
a) Inkjet printing ink
b) Thermochromic ink
c) Phosphorescent ink
d) Metallic ink
Syllabus :
Printing and Packaging Material Technology :
The creation of color by light emission, absorption, scattering and interference. The interaction of light with dilute suspensions of pigment particles and dyes in solution. The interaction of light with concentrated pigment dispersions and dyed textile materials.
Development of the Kubelka-Munk two flux radiation transfer theory and its application to pigmented and dyed materials. Standard methods of characterisation of the optical properties of pigmented and dyed materials.
Computer based methods of color match prediction and color match correction of pigmented and dyed materials. The optical properties of non-homogeneous systems such as metallic finishes, wood stains, and fibre blends.