This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Gravures”.
1. __________ (also called intaglio) utilizes an indented area of the plate from which to print.
a) Screen printing
b) Gravure printing
c) Cadmium sulphide printing
d) Stencil printing
View Answer
Explanation: It’s a type of intaglio printing process in which engraving the image onto an image carrier. The image is engraved onto a cylinder because, like offset printing and flexography, it utilizes a rotary printing press.
2. In the gravure process the leaves with raised areas free of ink, and the ink is transferred from the __________
a) Gravure plates
b) Depressed area
c) Rotogravure
d) Spot
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Explanation: It utilizes 2 film positives, one of which is a film positive of the image in which solid areas, text, variable-density image the other being a special gravure screen, containing b/w 100:200 lines per inch. The screen is utilized to “convert” the solid image into many tiny cells.
3. Web printing with the gravure process is called __________ The edges of printed areas have a serrated appearance.
a) Gravure plates
b) Depressed area
c) Rotogravure
d) Spot
View Answer
Explanation: The printing system utilising a rotary press with intaglio cylinders, typically running at high speed and utilized for long print runs of magazines and stamps. It also utilizes an indented area of the plate from which to print.
4. Gravure printing is usually carried out as a web process on lightweight.
a) True
b) False
View Answer
Explanation: Gravure printing is usually carried out as a web process on lightweight which is below 40 lb/ream coated or uncoated groundwood paper with minimal pressure on the plate.
5. The major components of a rotogravure press is the engraved cylinder.
a) True
b) False
View Answer
Explanation: Gravure cylinders are usually made of steel and plated with copper, though other materials, e.g. ceramics could also be utilized. A doctor blade to remove the ink from the non-printing area, and the impression roller.
6. The __________ is held in the plate by a series of cells or wells etched in a metal surface, often copper.
a) Starch
b) Pulp
c) Ink
d) Lignin
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Explanation: The cells are filled by rolling the plate cylinder in a bath of ink. Ink is removed from the non-printing areas by a doctor blade. A metal (generally Cu, Zn or steel) plate is covered with a waxy ground which’s resistant to acid.
7. The resolution of gravure is __________ or more lines per inch.
a) 10
b) 20
c) 140
d) 150
View Answer
Explanation: It’s the way into printed electronics due to which the potential of high resolution prints, smooth layers, and the variety of processable materials. The resolution of gravure is 150 or more lines per inch.
8. __________ methods utilize a computer controlled oscillating diamond that penetrates variable distances to cut the copper plate, which results in pyramid shaped cells of variable depth and variable area.
a) Electro chemical
b) Mechanical
c) Electro-mechanical
d) Chemical
View Answer
Explanation: It’s utilized to measure intraocular pressure is presented. A light probe was made to collide with an eye (cornea or sclera) and to bounce back.
9. ___________ is a method which utilizes a mechanically engraved or chemically etched copper or steel plate. Ink is applied to the plate and doctored off.
a) Zinc engraving
b) Aluminium engraving
c) Steel engraving
d) Copper plate engraving
View Answer
Explanation: The ruling machine created parallel straight or wavy lines very close together, usually for utilize with etching. Another one of these tools is the geometric lathe.
10. This method is capable of very sharp images and is utilized for printing currency and certificates with fine details. What is the name of the method?
a) Zinc engraving
b) Aluminium engraving
c) Steel engraving
d) Copper plate engraving
View Answer
Explanation: The lathe is utilized to engrave images on plates, which are in turn engraved on rolls for such utilizes as printing banknotes. This machine utilizes a master template to lightly engrave a duplicate image which could be then engraved by hand or etched with acid.
Sanfoundry Global Education & Learning Series – Pulp and Paper.
To practice all areas of Pulp and Paper, here is complete set of 1000+ Multiple Choice Questions and Answers.