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Engraving Of An-named Physician Examining A Urine Sample
Engraving is the practice of incising a design onto a hard, usually flat surface by cutting grooves into it with a burin. The result may be a decorated object in itself, as when silver, gold, steel, or glass are engraved, or may provide an 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 engraving is a form of relief printing and is not covered in this article, same with rock engravings like petroglyphs. 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 It has long been replaced by various photographic processes in its commercial applications and, partly because of the difficulty of learning the technique, is much less common in printmaking, where it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photoengraving
Photoengraving is a process that uses a light-sensitive photoresist applied to the surface to be engraved to create a mask that protects some areas during a subsequent operation which etches, dissolves, or otherwise removes some or all of the material from the unshielded areas of a substrate. Normally applied to metal, it can also be used on glass, plastic and other materials. A photoresist is selected which is resistant to the particular acid or other etching compound to be used. It may be a liquid applied by brushing, spraying, pouring or other means and then allowed to set, or it may come in sheet form and be applied by laminating. It is then exposed to light—usually strong ultraviolet (UV) light—through a photographic, mechanically printed, or manually created image or pattern on transparent film. Alternatively, a lens may be used to project an image directly onto it. Typically, the photoresist is hardened where it receives sufficient exposure to light, but some photoresis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantograph
A pantograph (, from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen. If a line drawing is traced by the first point, an identical, enlarged, or miniaturized copy will be drawn by a pen fixed to the other. Using the same principle, different kinds of pantographs are used for other forms of duplication in areas such as sculpting, minting, engraving, and milling. Because of the shape of the original device, a pantograph also refers to a kind of structure that can compress or extend like an accordion, forming a characteristic rhomboidal pattern. This can be found in extension arms for wall-mounted mirrors, temporary fences, pantographic knives, scissor lifts, and other scissor mechanisms such as the pantograph used on electric locomotives and trams. History The ancient Greek engineer Hero of Alexandria described pant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Die (manufacturing)
A die is a specialized machine tool used in manufacturing industries to cut and/or form material to a desired shape or profile. Stamping dies are used with a press, as opposed to drawing dies (used in the manufacture of wire) and casting dies (used in molding) which are not. Like molds, dies are generally customized to the item they are used to create. Products made with dies range from simple paper clips to complex pieces used in advanced technology. Continuous-feed laser cutting may displace the analogous die-based process in the automotive industry, among others. Die stamping Blanking and piercing are two die cutting operations, and bending is an example of a die forming operation. Die forming Forming operations work by deforming materials like sheet metal or plastic using force (compression, tension, or both) and rely on the material's mechanical properties. Forming dies are typically made by tool and die makers and put into production after mounting into a press. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engraving
Engraving is the practice of incising a design onto 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 engraving is a form of relief printing and is not covered in this article, same with rock engravings like petroglyphs. 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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Security Printing
Security printing is the field of the printing industry that deals with the printing of items such as banknotes, cheques, passports, tamper-evident labels, security tapes, product authentication, stock certificates, postage stamps and identity cards. The main goal of security printing is to prevent forgery, tampering, or counterfeiting. More recently many of the techniques used to protect these high-value documents have become more available to commercial printers, whether they are using the more traditional offset and flexographic presses or the newer digital platforms. Businesses are protecting their lesser-value documents such as transcripts, coupons and prescription pads by incorporating some of the features listed below to ensure that they cannot be forged or that alteration of the data cannot occur undetected. A number of technical methods are used in the security printing industry. Security printing is most often done on security paper, but it can also occur on plastic mate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Letterhead
A letterhead is the heading at the top of a sheet of letter paper (stationery). It consists of a name, address, logo or trademark, and sometimes a background pattern. Overview Many companies and individuals prefer to create a letterhead template in a word processor or other software application. That generally includes the same information as pre-printed stationery but at lower cost. Letterhead can then be printed on stationery or plain paper, as needed, on a local output device or sent electronically. Letterheads are generally printed by either the offset or letterpress methods. In most countries outside North America, company letterheads are printed A4 in size (210 mm x 297 mm). In North America, the letter size is typically 8.5 x 11 inches (215 x 280 mm). Although modern technology makes letterheads very easy to imitate, they continue to be used as evidence of authenticity.Federal Evidence Review, Editor's blog, 2009. http://federalevidence.com/blog/2009/a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Engraving
Steel engraving is a technique for printing illustrations based on steel instead of copper. It has been rarely used in artistic printmaking, although it was much used for reproductions in the 19th century. Steel engraving was introduced in 1792 by Jacob Perkins (1766–1849), an American inventor, for banknote printing. When Perkins moved to London in 1818, the technique was adapted in 1820 by Charles Warren and especially by Charles Heath (1785–1848) for Thomas Campbell's ''Pleasures of Hope'', which contained the first published plates engraved on steel. The new technique only partially replaced the other commercial techniques of that time such as wood engraving, copper engraving and later lithography. Process Confusingly, the printmaking technique used in steel engravings is, after the earliest years in the 1820s, normally a combination of etching and true engraving, with etching becoming dominant in later examples, after the technique became popular again in the 1830s. En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Line Engraving
Line engraving is a term for engraved images printed on paper to be used as prints or illustrations. The term is mainly used in connection with 18th- or 19th-century commercial illustrations for magazines and books or reproductions of paintings. It is not a technical term in printmaking, and can cover a variety of techniques, giving similar results. Steel engraving is an overlapping term, for images that in fact are often mainly in etching, mostly used for banknotes, illustrations for books, magazines and decorative prints, often reproductive, from about 1820 to the early 20th century, when the technique became less used. ''Copperplate engraving'' is another somewhat outdated term for engravings. With photography long established, engravings made today are nearly all artistic ones in printmaking, but the technique is not as common as it used to be; more than other printmaking techniques, engraving requires great skill and much practice, even for an experienced artist. Technique ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warsaw
Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officially estimated at 1.86 million residents within a greater metropolitan area of 3.1 million residents, which makes Warsaw the 7th most-populous city in the European Union. The city area measures and comprises 18 districts, while the metropolitan area covers . Warsaw is an Alpha global city, a major cultural, political and economic hub, and the country's seat of government. Warsaw traces its origins to a small fishing town in Masovia. The city rose to prominence in the late 16th century, when Sigismund III decided to move the Polish capital and his royal court from Kraków. Warsaw served as the de facto capital of the Polish–Lithuanian Commonwealth until 1795, and subsequently as the seat of Napoleon's Duchy of Warsaw. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Museum, Warsaw
The National Museum in Warsaw ( pl, Muzeum Narodowe w Warszawie), popularly abbreviated as MNW, is a national museum in Warsaw, one of the largest museums in Poland and the largest in the capital. It comprises a rich collection of ancient art ( Egyptian, Greek, Roman), counting about 11,000 pieces, an extensive gallery of Polish painting since the 16th century and a collection of foreign painting ( Italian, French, Flemish, Dutch, German and Russian) including some paintings from Adolf Hitler's private collection, ceded to the museum by the American authorities in post-war Germany. The museum is also home to numismatic collections, a gallery of applied arts and a department of oriental art, with the largest collection of Chinese art in Poland, comprising some 5,000 objects. The museum boasts the Faras Gallery with Europe's largest collection of Nubian Christian art and the Gallery of Medieval Art with artefacts from all regions historically associated with Poland, supplement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Pierre Norblin De La Gourdaine
Jean-Pierre Norblin de La Gourdaine ( pl, Jan Piotr Norblin; 15 July 1745 – 23 February 1830) was a Polish- French painter, draughtsman, engraver and caricaturist. Born in France, from 1774 to 1804 he resided in the Crown of the Kingdom of Poland, where he obtained citizenship. He is considered one of the most important painters of the Enlightenment in Poland. He achieved great success in Poland. Given many commissions from some of the most notable families of the country, he stayed there for many years, not returning to Paris until the early 19th century. His style showed the influence of Antoine Watteau, and combined the Rococo tradition of charming '' fêtes galantes'' and '' fêtes champêtres'' with a panorama of daily life and current political events, captured with journalistic accuracy. He created a gallery of portraits of representatives of all social classes in the last years of the Polish–Lithuanian Commonwealth. Life Born in Misy-sur-Yonne in 1745, Norblin sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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