Printing Technology

Printing Technology

diplomainprinting

Print communication is one of the strongest and powerful media of mass communication which is growing very rapidly. Books, newspapers and magazines come to mind most often when people think about printed products. Everyone is familiar with such products. Print is power. According to famous saying “Book lives longer than author himself” and “Book is an indispensable document in its own field” also establishes the importance of print.
                        The printed material either book, magazine or newspaper has a strong impact on society and plays a key role in nation building. We find the existence of print in every sphere of our life and it plays crucial role in educating the people and to provide them clear picture of what is going on in and around the world. The invention of movable type and printing press by Johannes Gutenberg has actually revolutionized print media. Gutenberg printed the first book on a printing press with movable type in 1453. This invention transformed the way the world received printed material.

  • Diploma Printing Technology
  • First Semester
  • Second Semester
  • Third Semester
  • Fourth Semester
Printing is a part of the mass communication process. It involves several skills. Printing industry is an industry in which technical skills holds the prime importance. Each person engaged in performing typesetting, designing, pasting, plate making, image setting, camera work, printing and binding has a specific and specialized role to perform and contribute for the final output.

Printing means presentation. It is the presentation of our ideas, views, thoughts, news & events, expressions and skill in the form of printed text or graphic format. In other words, it is a tool to express creativity using technical skills. It is a multi-disciplinary profession, which deals with text and graphics to make a final print by transferring ink on paper or board or other materials. The printed material either book, magazine or newspaper has a strong impact on society and plays a key role in nation building. Print media influences every sphere of our life. It not only helps in educating people but also provide them a clear picture of what is going on in and around the world.

1.DIFFERENT PRITING PROCESSES Each of the printing processes has particular properties, characteristics and associated costs which make it more suitable for certain classes of work than others. It has to be acknowledged, however, that there is a considerable amount of common ground where two or more printing processes may regularly be used to produce a certain printed product – eg -books printed by offset litho, flexography and letterpress, newspapers by offset litho (cold-set) and flexography, reel-fed labels by flexography and letterpress, periodicals printed by sheet-fed, heat-and cold-set web offset, also web-fed gravure.

2.PRINTED PRODUCTS

Printed products form an important part of every person’s life. Right from the time we get up in the morning till we go back to sleep we use or come in contact with some printed products. There are number of printed products available each having its own style and format, design and makeup. The orange juice bottle’s labels, the coffee packet, the railway tickets, the timetable, the information leaflet for medicines, the paper money that we use to pay our magazines these all are printed. Print is essential part of a society focusing intensively on communication. Print is one of several communication media.

3.MATERIALS – PAPER

Paper is a thin material produced by pressing together moist fibers, typically cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. Paper is a versatile material with many uses. Whilst the most common is for writing and printing upon, it is also widely used as a packaging material, in many cleaning products, in a number of industrial and construction processes, and even as a food ingredient – particularly in Asian cultures.

4.BASICS OF OFFSET PRINTING

Offset printing or web offset printing is a commonly used printing technique in which the inked image is transferred (or “offset”) from a plate to a rubber blanket, then to the printing surface. When used in combination with the lithographic process, which is based on the repulsion of oil and water, the offset technique employs a flat (planographic) image carrier on which the image to be printed obtains ink from ink rollers, while the non-printing area attracts a water-based film (called “fountain solution”), keeping the non-printing areas ink-free.

1.MATERIALS – INK Ink is a liquid or paste that contains pigments or dyes and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, or quill. Thicker inks, in paste form, are used extensively in letterpress and lithographic printing.

2.DIGITAL WORKFLOW

Printing organizations led their customers into a digital workflow, starting with the early adoption of CTP and digital prepress technologies. Print providers made good and sure that they were ready and able to process digital files before they asked their customers for them.

3.FILM ASSEMBLY

Film assembly is the process of precisely positioning and fastening one or more film negatives or positives onto a sheet.

4.POST PRODUCTION TECHNIQUES

Post-press operations consist of cutting, folding, assembling, and binding. Not all printed products, however, are subjected to all of the processes. For example, simple folded pamphlets do not undergo binding. There are many additional lesser post-press finishing processes such as varnishing, perforating, drilling, etc. Other substrates may be subjected to finishing processes that involve pasting, mounting, laminating, and collating. There are also a number of post-press operations unique to screen printing including die cutting, vacuum forming, and embossing.

1.OFFSET MACHINE PRINTING

Offset printing, also called offset lithography, is a method of mass-production printing in which the images on metal plates are transferred (offset) to rubber blankets or rollers and then to the print media. The print media, usually paper, does not come into direct contact with the metal plates. This prolongs the life of the plates. In addition, the flexible rubber conforms readily to the print media surface, allowing the process to be used effectively on rough-surfaced media such as canvas, cloth or wood.

2.SOLVING OFFSET PRESS PROBLEMS

In this section we’ll dive deep to pinpoint the most effective techniques for troubleshooting offset press-related problems. From controlling press components in dampening systems, to cylinder pressure, to roller settings, and maintenance for optimizing press performance—here you’ll learn, step-by-step, how solve the trickiest print-related problems and gain proven techniques to make your pressroom problem free.

3.PLATE MAKING, CTP

Computer to plate (CTP) is an imaging technology used in modern printing processes. In this technology, an image created in a Desktop Publishing (DTP) application is output directly to printing. This compares with the older technology, Computer to film (CTF), where the computer file is output onto a photographic film. This film is then used to make a printing plate, in a similar manner to a contact proof in darkroom photography.

4.COLOUR/PHOTO REPRODUCTION

The success of a color reproduction lies in how close the reproduced scene is to the original scene. Note that the term ‘close’ can be measured both quantitatively and qualitatively. There are two types of color reproduction system, additive and subtractive. Photo Reproduction is concerned with photo graphic duplication of an original into a negative or positive film in order to make a master printing surface ie plate. From the master printing surface many similar copies of the original is printed

1.OFFSET MACHINE PRINTING

Offset printing, also called offset lithography, is a method of mass-production printing in which the images on metal plates are transferred (offset) to rubber blankets or rollers and then to the print media. The print media, usually paper, does not come into direct contact with the metal plates. This prolongs the life of the plates. In addition, the flexible rubber conforms readily to the print media surface, allowing the process to be used effectively on rough-surfaced media such as canvas, cloth or wood.

2.SOLVING OFFSET PRESS PROBLEMS

In this section we’ll dive deep to pinpoint the most effective techniques for troubleshooting offset press-related problems. From controlling press components in dampening systems, to cylinder pressure, to roller settings, and maintenance for optimizing press performance—here you’ll learn, step-by-step, how solve the trickiest print-related problems and gain proven techniques to make your pressroom problem free.

3.QUALITY CONTROL MEASURES

Color and quality control starts with color management in prepress, ICC profiles, press fingerprinting and adoption of tools such as G7 and increasingly involves in-line inspection on the press and binding lines with the intent of creating closed-loop systems for printing process control.

4.PRESS MANAGEMENT

Management is the process of giving direction and controlling the various activities of the people to achieve the objectives of an organization.

5.INDUSTRIAL VISIT

Institute organizes industrial visits to enhance the knowledge of our students and to prepare them well in advance to be a qualified professional in the field.