Graphic Reproduction B.E Question Paper : jaduniv.edu.in
Name of the University : Jadavpur University
Department : Printing Engineering
Degree : B.E
Subject Code/Name : Graphic Reproduction
Year/Sem : II/I
Website : jaduniv.edu.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/dspace.jdvu.ac.in/5406-2nd%20Yr.%20Graphic%20Reproduction.pdf
Graphic Reproduction Question Paper :
Bachelor Of Printing Engineering Examination, 2010 :
(2Year-1Semester)
Time : Three hours
Related : Jadavpur University Flexo & Gravure B.E Model Question Paper : www.pdfquestion.in/5405.html
Full Marks : 100
Answer any FIVE questions.
1. a)Simple lenses are not used in Graphic Reproduction” – Justify. 4
b) Discuss various defects in process lenses and show their remedies. 10
c) What do fnumbers printed on the lens body indicate? 2
d) How magnification factor affects exposure time? 4
2. a) Why chemical ripening is at all required in the manufacturing of dry gelatin halide emulsion? 2
b) Why doctoring is necessary in the manufacturing of dry gelatin halide emulsion? Explain it briefly. 15
c) Compare among functions of different layers of a black and white process film. 8 d) What do you mean by Gamma? Explain briefly. • – 4
3a) How a Continuous-tone development solution works? 8
b) What is optical density? Describe the basic principle of a densitometer with supporting . diagram. — 26
c)How optical density of a negative image can be enhanced? 4
4. a) What are the basic requirements of a light source for Graphic Reproduction Camera
b) Describe the different light sources used in Graphic Reproduction. 17
5. a) How Penumbrahelps the formation of dots of varying sizes in halftone images? Show with supporting diagram. 7
b) Why halftones are at all required in reproduction processes? 4
c) How is the black printer negative prepared? 6
d) What sort of special exposure is required in halftone preparation and why? l 2
6. a) Compare between contact screen and glass crossline screen. 7
b) Discuss the role of colour separation filters in colour separation photography. 7
c) What will happen if
i) lith emulsion is used for continuous tone work? 3
ii) an orthochromatic emulsion is used for colour separation photography? 3
7. a) Make a comparison between direct and indirect method of colour separation with supporting block diagram. 10
b) Explain why in colour reproduction methods colour correction is a necessity. Describe any one colour correction technique. 55
8. Write short notes on any four : 20
a) Lens flare
b) Gelatin
c) Moire” pattern d) Screen angle
e) Filter indices
Syllabus :
Graphic Reproduction :
Basic principles of reproduction camera. Overview of reproduction cameras, Contact printer, Enlarger, Layout of a darkroom, Camera lens, Depth of field, Hyper focal distance, Aperture & Iris diaphragm
Panchromatic, Orthochromatic, Blue sensitive films, Process films, exposure, developer & their ingredients, development, film speed & sensitivity, Silver halide chemistry, Basic sensitometry, Gamma, Characteristic curve
Densitometry, Colour filters, Colour separation, Halftone, Screen angles, Black printer, Colour correction. Digital photography and transmission scanner.
References :
** Burden, J. W., Graphic Reproduction Photography, Focal Press, London.
** Adams J. Michael, Faux D. David, Rieber J. Lloyd, Printing Technology, Delmar Publishers
** Cogoli John E., Graphic Arts Photography : Black and white, GATF
** Wentzel Fred, Graphic Arts Photography : Color, GATF
** Eldred Nelson R., Chemistry for the Graphic Arts, GATF
Graphic Reproduction Laboratory :
1. Study of different darkroom equipments
2. Study of developing solution
3. Procedure and handling the film, exposing, processing and drying
4. Preparation of line negative
5. Production of positives by contact printing
6. Preparation of halftone
7. Preparation of continuous tone bromide photograph using Enlarger
8. Retouching
9. Densitometric analysis
10. Digital reproduction photography
11. Digital inputting of transmission originals using transparency scanner