Printing techniques unit 7
- 1. Type Technique Method Advantage s Disadvanta ges Example (picture) Hand Etching Etching is the process of using strong acid or mordant to cut into the unprotected parts of a metal surface to create a design. Many circuits can be etched at once. Circuits can be very compact - the etched tracks replace wires and leads. The main disadvanta ge is that if the circuit needs to be updated, then the it will need to be re- designed and re- etched from scratch, and that etching uses some nasty chemicals that can be harmful to the environme nt. Linocut Linocut is a printmaking technique, a variant of woodcut in which a sheet of linoleum Carving is enabled, printing is possible, and embossing is enabled, rubbing, tough and sturdy, different surfaces, easy for simple designs. It’s not great if you’re unskilful because it is very complex’s so people might find it hard. Screen print Screen printing is a printing technique that uses a woven mesh to support an ink-blocking stencil to receive a desired image. The main advantage is the unique visual result it creates. Can be reused many times, they can eventually become warped
- 2. and uneven. Woodcut Woodcut— occasionally known as xylography—is a relief printing artistic technique in printmaking in which an image is carved into the surface of a block of wood An advantage is that it is cheaper to buy. Need a special tool and it takes a lot of time to do it. Lithography Lithography is a method of printing originally based on the principle that oil and water do not mix. - It is very fast - It does fast print runs - It is cheap - The images produced are clear and sharp - It cannot produced very high quality prints - It cannot do small print runs so people who want to print in small numbers cannot. - The materials are complex to use. Mechanica l Letterpress Letterpress printing is a technique of relief printing using a printing press, a process by which many copies are produced by repeated direct impression of an inked. Letterpress printing uses raised, inked, reversed images pressed against paper to create a properly oriented picture or page of text. rubber stamping a hundred pages would take a lot of time, letterpress printing, although high in quality, is slow to assemble.
- 3. Gravure a type of intaglio printing process, which involves engraving the image onto an image carrier Photograp hic quality, Bright colors, Superior color registration Its main disadvanta ge is the high cost and the time needed to engrave gravure cylinders Screen process Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen to fill the open mesh apertures with ink. The screen printing process affords one the opportunity to print images and text on a variety of promotiona l items. Images for screen printing have to be simple in design and reduced to definite lines or shapes that will print well Digital Photocopyin g is a machine that makes paper copies of documents and other visual images quickly and cheaply Advantages for photocopier s include making copies of pages quickly, relatively cheaply and easy correlation of pages Disadvanta ges include the need for maintenanc e, annual servicing and the high cost to purchase. Laser printing Laser printing is an electrostatic digital printing process. It produces high- quality text and graphics Colour printing is possible Print quality is good Noiseless Printing speed is Not be the printer of choice for everyone, Due to the cost of ink, running an inkjet printer
- 4. high Most models are relatively light weight and compact so they don't take up too much space on the desk over time is a more expensive than a laser printer. Prints emerge from the printer slightly wet and may need time to dry. Printing is slower and therefore inkjets aren't designed for high volume printing Inkjet Type of computer printing that recreates a digital image by propelling droplets of ink onto paper, plastic, or other substrates. Low cost High quality of output, capable of printing fine and smooth details Capable of printing in vivid color, good for printing pictures Easy to use Reasonabl y fast Quieter than dot matrix Print head is less durable, prone to clogging and damage Expensive replaceme nt ink cartridges Not good for high volume printing Printing speed is not as fast as laser printers
- 5. printer No warm up time Desktop publishing The creation of documents using page layout skills on a personal computer. Desktop publishing software can generate layouts and produce typographic quality text and images comparable to traditional typography and printing. Costs efficient- easy to use it is possible to place elements on the page and then move them around as you wish to create the desired product Disadvanta ges are it takes a long time to install it might not give all the tool as Photoshop