Lithography originally used an image drawn (etched) into a coating of wax or an oily substance applied to a plate of lithographic stone as the medium to transfer ink to a blank paper sheet, and so produce a printed page.
In modern lithography, the image is made of a polymer coating applied to a flexible aluminum plate. It uses simple chemical processes to create an image. For instance, the positive part of an image is a water-repelling hydrophobic substance, while the negative image would be water-retaining hydrophilic Thus, when the plate is introduced to a compatible printing ink and water mixture, the ink will adhere to the positive image and the water will clean the negative image. This allows a flat print plate to be used, enabling much longer and more detailed print runs than the older physical methods of printing (e.g., intaglio printing letterpress printing. To print an image lithographically, the flat surface of the stone plate is roughened slightlyetchedand divided into hydrophilic regions that accept a film of water, and thereby repel the greasy ink; and hydrophobic regions that repel water and accept ink because the surface tension is greater on the greasy image area, which remains dry. The image can be printed directly from the stone plate (the orientation of the image is reversed), or it can be offset by transferring the image onto a flexible sheet (rubber) for printing and publication.
As a printing technology, lithography is different from intaglio printing (gravure), wherein a plate is either engraved etched or stippled to score cavities to contain the printing ink; and woodblock printing and letterpress printing, wherein ink is applied to the raised surfaces of letters or images. Most types of books of high-volume text are printed with offset lithography the most common form of printing technology. Etymologically, the word lithography also denotes photolithography, a micro fabrication technique used to make integrated circuits and microelectromechanical systems, as such are more technologically akin to etching than lithography, printing from a stone plate.
Wall art has almost forever been in existence with a variety of wall art décor designs and paintings being displayed on walls for decorative purposes. Living space is no longer enough for just space and sitting but as a depiction of individual taste and life style.??Wall art has almost forever been in existence with a variety of wall art décor designs and paintings being displayed on walls for decorative purposes. Living space is no longer enough for just space and sitting but as a depiction of individual taste and life style. People will always form an impression of you with regards to your taste in wall art and décor and therefore you can use wall art as a way of showing people your taste and preferences. How you decorate your home is just and extension of your personality. Tapestry wall art is a form of art that is depicted on woven textile and this type of wall art boasts of great detail in design. ??Tapestries have been used for as long as we can remember as both functional and aesthetic wall art and décor aspects. There are different types of tapestry décor accessories such as throw, floor rugs, table mats and cushions. This type of wall art comes in a variety of categories depending on the content of the illustration such as abstract wall art; people wall art, renaissance art, vintage art and landscape wall art among others. The abstract wall art is a revolutionary modern wall art that consists of dynamic designs that definitely blends in with almost any type of décor due to variety in colour and simplicity of design. Landscape wall art is also great and gives that natural feel to your home.
Wall art is usually a way of portraying lifestyle through elegance in design and tapestry wall art pictures sophistication written all over them. They are great for adding that elegant touch to your space and the tapestry wall arts can almost blend with any other complementary type of wall art.
The author of this article has expertise in canvas wall art. The articles on large wall art, modern wall art reveals the authors knowledge on the same. The author has written many articles on cheap wall art as well.