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Etching
Etching is traditionally the process of using strong acid or mordant to cut into the unprotected parts of a metal surface to create a design in intaglio (incised) in the metal. In modern manufacturing, other chemicals may be used on other types of material. As a method of printmaking, it is, along with engraving, the most important technique for old master prints, and remains in wide use today. In a number of modern variants such as microfabrication etching and photochemical milling, it is a crucial technique in modern technology, including circuit boards. In traditional pure etching, a metal plate (usually of copper, zinc or steel) is covered with a waxy ground which is resistant to acid. The artist then scratches off the ground with a pointed etching needle where the artist wants a line to appear in the finished piece, exposing the bare metal. The échoppe, a tool with a slanted oval section, is also used for "swelling" lines. The plate is then dipped in a bath of aci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etching (microfabrication)
Etching is used in microfabrication to chemically remove layers from the surface of a wafer (electronics), wafer during manufacturing. Etching is a critically important process module in fabrication, and every wafer undergoes many etching steps before it is complete. For many etch steps, part of the wafer is protected from the etchant by a "masking" material which resists etching. In some cases, the masking material is a photoresist which has been patterned using photolithography. Other situations require a more durable mask, such as silicon nitride. Etching media and technology The two fundamental types of etchants are liquid-phase ("wet") and plasma (physics), plasma-phase ("dry"). Each of these exists in several varieties. Wet etching The first etching processes used liquid-phase ("wet") etchants. This process is now largely outdated but was used up until the late 1980s when it was superseded by dry plasma etching. The wafer can be immersed in a bath of etchant, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rembrandt
Rembrandt Harmenszoon van Rijn (; ; 15 July 1606 – 4 October 1669), mononymously known as Rembrandt was a Dutch Golden Age painter, printmaker, and Drawing, draughtsman. He is generally considered one of the greatest visual artists in the history of Art of Europe, Western art.Gombrich, p. 420. It is estimated that Rembrandt's surviving works amount to about three hundred paintings, three hundred etchings and several hundred drawings. Unlike most Dutch painters of the 17th century, Rembrandt's works depict a wide range of styles and subject matter, from portrait painting, portraits and self-portraits to landscapes, genre scenes, allegorical and historical scenes, biblical and mythological subjects and animal studies. His contributions to art came in a period that historians call the Dutch Golden Age. Rembrandt never went abroad but was considerably influenced by the work of the Italian Old Masters and Bentvueghels, Dutch and Flemish artists who had studied in Italy. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Master Print
An old master print (also spaced masterprint) is a work of art produced by a printing process within the Western tradition (mostly by Old Masters). The term remains current in the art trade, and there is no easy alternative in English to distinguish the works of "fine art" produced in printmaking from the vast range of decorative, utilitarian and popular prints that grew rapidly alongside the artistic print from the 15th century onwards. Fifteenth-century prints are sufficiently rare that they are classed as old master prints even if they are of crude or merely workmanlike artistic quality. A date of about 1830 is usually taken as marking the end of the period whose prints are covered by this term. The main techniques used, in order of their introduction, are woodcut, engraving, etching, mezzotint and aquatint, although there are others. Different techniques are often combined in a single print. With rare exceptions printed on textiles, such as silk, or on vellum, old master print ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printmaking
Printmaking is the process of creating work of art, artworks by printing, normally on paper, but also on fabric, wood, metal, and other surfaces. "Traditional printmaking" normally covers only the process of creating prints using a hand processed technique, rather than a photographic reproduction of a visual artwork which would be printed using an electronic machine (Printer (computing), a printer); however, there is some cross-over between traditional and digital printmaking, including risograph. Prints are created by transferring ink from a Matrix (printing), matrix to a sheet of paper or other material, by a variety of techniques. Common types of matrices include: metal plates for engraving, etching and related intaglio printing techniques; stone, aluminum, or polymer for lithography; blocks of wood for woodcuts and wood engravings; and linoleum for linocuts. Screens made of silk or synthetic fabrics are used for the screen printing process. Other types of matrix substrates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatint
Aquatint is an intaglio printmaking technique, a variant of etching that produces areas of tone rather than lines. For this reason it has mostly been used in conjunction with etching, to give both lines and shaded tone. It has also been used historically to print in colour, both by printing with multiple plates in different colours, and by making monochrome prints that were then hand-coloured with watercolour. The term colour etching, frequently used in the art trade, is potentially ambiguous, but most often means one of these two options. It has been in regular use since the later 18th century, and was most widely used between about 1770 and 1830, when it was used both for artistic prints and decorative ones. After about 1830 it lost ground to lithography and other techniques. There have been periodic revivals among artists since then. An aquatint plate wears out relatively quickly, and is less easily reworked than other intaglio plates. Many of Goya's plates were reprin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francisco Goya
Francisco José de Goya y Lucientes (; ; 30 March 1746 – 16 April 1828) was a Spanish Romanticism, romantic painter and Printmaking, printmaker. He is considered the most important Spanish artist of the late 18th and early 19th centuries. His paintings, drawings, and engravings reflected contemporary historical upheavals and influenced important 19th- and 20th-century painters. Goya is often referred to as the last of the Old Masters and the first of the Modern art, moderns. Goya was born in Fuendetodos, Aragon to a middle-class family in 1746. He studied painting from age 14 under José Luzán, José Luzán y Martinez and moved to Madrid to study with Anton Raphael Mengs. He married Josefa Bayeu in 1773. Goya became a court painter to the Spanish Crown in 1786 and this early portion of his career is marked by portraits of the Spanish aristocracy and royalty, and Rococo-style List of Francisco Goya's tapestry cartoons, tapestry cartoons designed for the royal palace. Althoug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground (etching)
A ground is waxy material applied to the surface of a metal etching plate. A metal etching plate is a piece of sheet metal, usually copper, zinc, steel, or aluminium. The ground resists the acid or mordant which is used for etching, protecting areas of the metal plate. Grounds are made from a variety of materials including tar, asphaltum, paint (including spray paint), oil pastels, and other materials manufactured specifically for etching. Most commonly, a ground is applied evenly over the surface of the metal sheet (also known as the etching plate), and then removed using scratching and other mark making techniques to reveal bare metal underneath. In the traditional technique this is done with a metal needle. However, different grounds enable the artist to create different types of marks. Some types of grounds, such as an aquatint Aquatint is an intaglio printmaking technique, a variant of etching that produces areas of tone rather than lines. For this reason it has mostly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etched Carnelian Beads
Etched carnelian beads, or sometimes bleached carnelian beads, are a type of ancient decorative bead made from carnelian with an etched design in white, which were probably manufactured by the Indus Valley civilization during the 3rd millennium BCE. They were made according to a technique of alkaline-etching developed by the Harappans, and vast quantities of these beads were found in the archaeological sites of the Indus Valley civilization. They are considered as an important marker of ancient trade between the Indus Valley, Mesopotamia, and Ancient Egypt, as these precious and unique manufactured items circulated in great numbers between these geographical areas during the 3rd millennium BCE, and have been found in numerous tomb deposits. Production technique Etched carnelian beads with characteristic designs are widely known from various Indus Valley civilization sites dating to the 3rd millennium BCE, such as at Mohenjo-Daro, and these beads "were exported to the Mesopota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intaglio (printmaking)
Intaglio ( ; ) is the family of printing and printmaking techniques in which the image is incised into a surface and the incised line or sunken area holds the ink. It is the direct opposite of a relief print where the parts of the matrix that make the image stand ''above'' the main surface. Normally copper, or in recent times zinc, sheets called plates are used as a surface or matrix, and the incisions are created by etching, engraving, drypoint, aquatint or mezzotint, often in combination. Collagraphs may also be printed as intaglio plates. After the decline of the main relief technique of woodcut around 1550, the intaglio techniques dominated both artistic printmaking as well as most types of illustration and popular prints until the mid 19th century. The word "intaglio" describes prints created from plates where the ink-bearing regions are recessed beneath the plate's surface. Though brass, zinc, and other materials are occasionally utilized, copper is the most commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engraving
Engraving is the practice of incising a design on a hard, usually flat surface by cutting grooves into it with a Burin (engraving), burin. The result may be a decorated object in itself, as when silver, gold, steel, or Glass engraving, glass are engraved, or may provide an Intaglio (printmaking), intaglio printing plate, of copper or another metal, for printing images on paper as prints or illustrations; these images are also called "engravings". Engraving is one of the oldest and most important techniques in printmaking. Wood engravings, a form of relief printing and stone engravings, such as petroglyphs, are not covered in this article. Engraving was a historically important method of producing images on paper in artistic printmaking, in mapmaking, and also for commercial reproductions and illustrations for books and magazines. It has long been replaced by various photographic processes in its commercial applications and, partly because of the difficulty of learning the techni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photochemical Machining
Photochemical machining (PCM), also known as photochemical milling or photo etching, is a chemical milling process used to fabricate sheet metal components using a photoresist and etchants to corrosively machine away selected areas. This process emerged in the 1960s as an offshoot of the printed circuit board industry. Photo etching can produce highly complex parts with very fine detail accurately and economically. This process can offer economical alternatives to stamping, punching, laser or water jet cutting, or wire electrical discharge machining (EDM) for thin gauge precision parts. The tooling is inexpensive and quickly produced. This makes the process useful for prototyping and allows for easy changes in mass production. It maintains dimensional tolerances and does not create burrs or sharp edges. It can make a part in hours after receiving the drawing. PCM can be used on virtually any commercially available metal or alloy, of any hardness. It is limited to material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circuit Board
A printed circuit board (PCB), also called printed wiring board (PWB), is a laminated sandwich structure of conductive and insulating layers, each with a pattern of traces, planes and other features (similar to wires on a flat surface) etched from one or more sheet layers of copper laminated onto or between sheet layers of a non-conductive substrate. PCBs are used to connect or "wire" components to one another in an electronic circuit. Electrical components may be fixed to conductive pads on the outer layers, generally by soldering, which both electrically connects and mechanically fastens the components to the board. Another manufacturing process adds vias, metal-lined drilled holes that enable electrical interconnections between conductive layers, to boards with more than a single side. Printed circuit boards are used in nearly all electronic products today. Alternatives to PCBs include wire wrap and point-to-point construction, both once popular but now rarely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
