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2003 Course Surface Preparation - II

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Total No. of Questions : 6] [Total No. of Pages : 2 [3664] - 259 P 1351 B.E. (Printing) SURFACE PREPARATION - II (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Question Nos. 1 and 4 are compulsory. Out of remaining attempt 2 questions from Section I and 2 questions from Section II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. SECTION - I Q1) a) b) Explain in detail stages in Rubber plate-making. Explain the benefits of Photopolymer over Rubber plates. [10] [8] OR a) b) Q2) a) b) Explain in detail Design specifications for Flexography. State the benefits of Flexography. [12] [6] Write notes on [6] i) Insufficient density of a negative. ii) Effect of Main exposure. Calculate % shortening and new negative length for 2.84 mm plate thickness having printed length of 50 cm. [10] OR a) b) Mention the requirements of negative for Flexo Plate. Mention the safety precaution for Flexo Plate. Q3) Explain in detail processing of 2.84 mm Flexo Plate. [8] [8] [16] OR Q6) a) b) Explain various Flexo Plate mounting techniques. Write notes on i) Measuring the Plate thickness. ii) Orientation of Photopolymer plate. [10] [6] P.T.O.

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