Camtasia Studio

Camtasia Studio

Camtasia Studio

Download : Camstudio free

The original CamStudio was released as an open source product by RenderSoft software in October 2001.[2] The source code license was converted to the GNU General Public License in December 2002 with release 1.8.[3] The Source code of versions 1.0, 1.4 and 2.0 are still available at SourceForge.

In 2003, the company was acquired by eHelp Corporation who owned a competing product called RoboDemo (now calledAdobe Captivate[4][5][6]). eHelp Corporation released an updated version as CamStudio 2.1 under a proprietary software license only and removed the ability to create SWFs.[7] A succession of acquisitions led to the company being owned byAdobe.

Development of CamStudio 2.0 (the last open-source version) was resumed and released as free software again in September 2007 with the CamStudio 2.5 Beta 1 release.[8] Accordingly, it was re-branded as CamStudio Open Source.

CamStudio 3 is a complete rewrite of the project in the pre-alpha stages of development as of April 19, 2010[needs update].[9]

Malicious software[edit]

There have been ongoing reports about malicious code contained in some binaries of the software. In January 2014, the binary on the webpage was reported to be infected with the trojan, Artemis!0FEA2B12900D.

This edit from Nick Smith, the “caretaker” of CamStudio, “to finance future development, CamStudio has chosen to use an ad-supported installer offering other free software during the installation process. Regardless of what AV software is reporting, CamStudio unequivocally is *not* infected with a trojan or any other malicious software. It is possible that software offered via the installer could be triggering the alert, but CamStudio and the installer are both clean.”

Comodo blocked “CamStudio_Setup_v2.7.2_r326_(build_19Oct2013).exe” from installing, stating that it had a “[email protected]” infection. Nick Smith suggested disabling Comodo. Later, “PC Utilities Pro – PC Optimizer Pro” was reportedly being installed and being run without people’s permission. Systems were infected with the following: “PUP.Optional.Delta.A”, “PUP.Optional.Spigot.A”, “PUP.Optional.InstallCore.A”, “Rogue.Multiple”, “PUP.Optional.CrossRider.A”.

In 2013, Google-run website Virustotal declared that CamStudio contains malicious software, where most anti-virus programs detected Artemis Trojan in CamStudio installer file.[10]

At the beginning of 2015, CamStudio installation was still distributing a malicious software, though the prior uninfected installers could be obtained from SourceForge. The installer used by CamStudio also appeared to violate the conditions set forth in the first offer, not only changing all search engines and homepages to Yahoo – the stated actions – but installing a batch script to ensure that the homepages and search providers could never be set back.[needs update]

As of March 2016, the developers of CamStudio reported via forum post that the ad wrapper in the CamStudio installer had been removed and that it no longer offers third-party software or installs malware; however, they did not provide evidence of independent verification in the post.[11] In a VirusTotal analysis of the installer acquired from the official download URL on 10 August 2016, AVware, Dr. Web and VIPRE antivirus tools said it was infected with “InstallCore” while the remaining 51 said it was clean

 

Offset printing is a widely used printing technique where 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 film of water, keeping the non-printing areas ink-free.

Screenprinting (1907)[edit]

Main article: Screenprinting

Screenprinting has its origins in simple stencilling, most notably of the Japanese form (katazome), used who cut banana leaves and inserted ink through the design holes on textiles, mostly for clothing. This was taken up in France. The modern screenprinting process originated from patents taken out by Samuel Simon in 1907 in England. This idea was then adopted in San Francisco, California, by John Pilsworth in 1914 who used screenprinting to form multicolor prints in a subtractive mode, differing from screenprinting as it is done today.

Flexography[edit]

Main article: Flexography

A flexographic printing plate.

Flexography (also called “surface printing”), often abbreviated to “flexo”, is a method of printing most commonly used for packaging (labels, tape, bags, boxes, banners, and so on).

A flexo print is achieved by creating a mirrored master of the required image as a 3D relief in a rubber or polymer material. A measured amount of ink is deposited upon the surface of the printing plate (or printing cylinder) using an anilox roll. The print surface then rotates, contacting the print material which transfers the ink.

Originally flexo printing was basic in quality. Labels requiring high quality have generally been printed Offset until recently. In the last few years great advances have been made to the quality of flexo printing presses.

The greatest advances though have been in the area of PhotoPolymer Printing Plates, including improvements to the plate material and the method of plate creation. —usually photographic exposure followed by chemical etch, though also by direct laser engraving.

Photocopier (1960s)[edit]

Main article: Photocopier

Xerographic office photocopying was introduced by Xerox in the 1960s, and over the following 20 years it gradually replaced copies made by Verifax, Photostat, carbon paper,mimeograph machines, and other duplicating machines. The prevalence of its use is one of the factors that prevented the development of the paperless office heralded early in the digital revolution.

Thermal printer[edit]

Main article: Thermal printer

A thermal printer (or direct thermal printer) produces a printed image by selectively heating coated thermochromic paper, or thermal paper as it is commonly known, when the paper passes over the thermal print head. The coating turns black in the areas where it is heated, producing an image.

Laser printer (1969)[edit]

Main article: Laser printer

The laser printer, based on a modified xerographic copier, was invented at Xerox in 1969 by researcher Gary Starkweather, who had a fully functional networked printer system working by 1971.[30][31] Laser printing eventually became a multibillion-dollar business for Xerox.

The first commercial implementation of a laser printer was the IBM model 3800 in 1976, used for high-volume printing of documents such as invoices and mailing labels. It is often cited as “taking up a whole room,” implying that it was a primitive version of the later familiar device used with a personal computer. While large, it was designed for an entirely different purpose. Many 3800s are still in use.

The first laser printer designed for use with an individual computer was released with the Xerox Star 8010 in 1981. Although it was innovative, the Star was an expensive ($17,000) system that was only purchased by a small number of laboratories and institutions. After personal computers became more widespread, the first laser printer intended for a mass market was the HP LaserJet 8ppm, released in 1984, using a Canon engine controlled by HP software. The HP LaserJet printer was quickly followed by other laser printers from Brother Industries, IBM, and others.

Most noteworthy was the role the laser printer played in popularizing desktop publishing with the introduction of the Apple LaserWriter for the Apple Macintosh, along with Aldus PageMaker software, in 1985. With these products, users could create documents that would previously have required professional typesetting.

Dot matrix printer (1970)[edit]

Main article: Dot matrix printing

A dot matrix printer or impact matrix printer refers to a type of computer printer with a print head that runs back and forth on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like a typewriter. Unlike a typewriter or daisy wheel printer, letters are drawn out of a dot matrix, and thus, varied fonts and arbitrary graphics can be produced. Because the printing involves mechanical pressure, these printers can create carbon copies and carbonless copies.

Each dot is produced by a tiny metal rod, also called a “wire” or “pin”, which is driven forward by the power of a tiny electromagnet or solenoid, either directly or through small levers (pawls). Facing the ribbon and the paper is a small guide plate (often made of an artificial jewel such as sapphire or ruby [2]) pierced with holes to serve as guides for the pins. The moving portion of the printer is called the print head, and when running the printer as a generic text device generally prints one line of text at a time. Most dot matrix printers have a single vertical line of dot-making equipment on their print heads; others have a few interleaved rows in order to improve dot density.

Inkjet printer[edit]

Main article: Inkjet printer

Inkjet printers are a type of computer printer that operates by propelling tiny droplets of liquid ink onto paper.

Dye-sublimation printer[edit]

Main article: Dye-sublimation printer

A dye-sublimation printer (or dye-sub printer) is a computer printer which employs a printing process that uses heat to transfer dye to a medium such as a plastic card, printer paper or poster paper. The process is usually to lay one color at a time using a ribbon that has color panels. Most dye-sublimation printers use CMYO colors which differs from the more recognised CMYK colors in that the black dye is eliminated in favour of a clear overcoating. This overcoating (which has numerous names depending on the manufacturer) is effectively a thin laminate which protects the print from discoloration from UV light and the air while also rendering the print water-resistant. Many consumer andprofessional dye-sublimation printers are designed and used for producing photographic prints.

Digital press (1993)[edit]

Main article: Digital printing

Digital printing is the reproduction of digital images on a physical surface, such as common or photographic paper or paperboard-cover stock, film, cloth, plastic, vinyl, magnets,labels etc.

It can be differentiated from litho, flexography, gravure or letterpress printing in many ways, some of which are;

  • Every impression made onto the paper can be different, as opposed to making several hundred or thousand impressions of the same image from one set of printing plates, as in traditional methods.
  • The Ink or Toner does not absorb into the substrate, as does conventional ink, but forms a layer on the surface and may be fused to the substrate by using an inline fuser fluid with heat process (toner) or UV curing process (ink).
  • It generally requires less waste in terms of chemicals used and paper wasted in set up or makeready (bringing the image “up to color” and checking position).
  • It is excellent for rapid prototyping, or small print runs which means that it is more accessible to a wider range of designers and more cost effective in short runs.

Frescography (1998)[edit]

With CAM-program created Frescography

Screenshot of a CAM program for designing frescographies.

Main article: Frescography

Frescography is a method for reproduction/creation of murals using digital printingmethods, invented in 1998 by Rainer Maria Latzke, and patented in 2000. The frescography is based on digitally cut-out motifs which are stored in a database. CAMsoftware programs then allow to enter the measurements of a wall or ceiling to create a mural design with low resolution motifs. Since architectural elements such as beams, windows or doors can be integrated, the design will result in an accurately and tailor-fit wall mural. Once a design is finished, the low resolution motifs are converted into the original high resolution images and are printed on canvas by Wide-format printers. The canvas then can be applied to the wall in a wall-paperhanginglike procedure and will then look like on-site created mural.

3D printing[edit]

Main article: 3D printing

Three-dimensional printing is a method of converting a virtual 3D model into a physical object. 3D printing is a category of rapid prototyping technology. 3D printers typically work by ‘printing’ successive layers on top of the previous to build up a three dimensional object. 3D printers are generally faster, more affordable and easier to use than other additive fabrication technologies.[32]

Technological developments[edit]

Woodcut[edit]

Main article: Woodcut

Woodcut is a relief printing artistic technique in printmaking in which an image is carved into the surface of a block of wood, with the printing parts remaining level with the surface while the non-printing parts are removed, typically with gouges. The areas to show ‘white’ are cut away with a knife or chisel, leaving the characters or image to show in ‘black’ at the original surface level. The block is cut along the grain of the wood (unlike wood engraving where the block is cut in the end-grain). In Europe beechwood was most commonly used; in Japan, a special type of cherry wood was popular.

Woodcut first appeared in ancient China. From 6th century onward, woodcut icons became popular and especially flourished in Chinese Buddhism. Since the 10th century, woodcut pictures appeared as illustrations in Chinese books, on banknotes such as Jiaozi (currency), and as single sheet images. Woodcut New Year pictures are also very popular with the Chinese.

In China and Tibet printed images mostly remained tied as illustrations to accompanying text until the modern period. The earliest woodblock printed book, the Diamond Sutracontains a large image as frontispiece, and many Buddhist texts contain some images. Later some notable Chinese artists designed woodcuts for books, the individual print develop in China in the form of New Year picture as an art-form in the way it did in Europe and Japan.

In Europe, woodcut is the oldest technique used for old master prints, developing about 1400, by using on paper existing techniques for printing on cloth. The explosion of sales of cheap woodcuts in the middle of the century led to a fall in standards, and many popular prints were very crude. The development of hatching followed on rather later than inengraving. Michael Wolgemut was significant in making German woodcut more sophisticated from about 1475, and Erhard Reuwich was the first to use cross-hatching (far harder to do than in engraving or etching). Both of these produced mainly book-illustrations, as did various Italian artists who were also raising standards there at the same period. At the end of the century Albrecht Dürer brought the Western woodcut to a level that has never been surpassed, and greatly increased the status of the single-leaf (i.e. an image sold separately) woodcut.

Engraving[edit]

Main article: Engraving

Engraving is the practice of incising a design onto a hard, flat surface, by cutting grooves into it. The result may be a decorated object in itself, as when silver, gold or steel are engraved, or may provide an intaglio printing plate, of copper or another metal, for printing images on paper, which are called engravings. Engraving was a historically important method of producing images on paper, both in artistic printmaking, and also for commercial reproductions and illustrations for books and magazines. It has long been replaced byphotography in its commercial applications and, partly because of the difficulty of learning the technique, is much less common in printmaking, where it has been largely replaced by etching and other techniques. Other terms often used for engravings are copper-plate engraving and Line engraving. These should all mean exactly the same, but especially in the past were often used very loosely to cover several printmaking techniques, so that many so-called engravings were in fact produced by totally different techniques, such as etching.

In antiquity, the only engraving that could be carried out is evident in the shallow grooves found in some jewellery after the beginning of the 1st Millennium B.C. The majority of so-called engraved designs on ancient gold rings or other items were produced by chasing or sometimes a combination of lost-wax casting and chasing.

In the European Middle Ages goldsmiths used engraving to decorate and inscribe metalwork. It is thought that they began to print impressions of their designs to record them. From this grew the engraving of copper printing plates to produce artistic images on paper, known as old master prints in Germany in the 1430s. Italy soon followed. Many early engravers came from a goldsmithing background. The first and greatest period of the engraving was from about 1470 to 1530, with such masters as Martin Schongauer, Albrecht Dürer, and Lucas van Leiden.

Etching[edit]

Main article: 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 in intaglio in the metal (the original process—in modern manufacturing other chemicals may be used on other types of material). As an intaglio method of printmaking it is, along with engraving, the most important technique forold master prints, and remains widely used today.

Halftoning[edit]

Main article: Halftone

Halftone is the reprographic technique that simulates ones it is continuous tone imagery through the use of equally spaced dots of varying size.[33] ‘Halftone’ can also be used to refer specifically to the image that is produced by this process.[33]

The idea of halftone printing originates from William Fox Talbot. In the early 1850s he suggested using “photographic screens or veils” in connection with a photographic intaglioprocess.[34]

Several different kinds of screens were proposed during the following decades, but the first half-tone photo-engraving process was invented by Canadians George-Édouard Desbarats and William Leggo Jr.[3] On October 30, 1869, Desbarats published the Canadian Illustrated News which became the world’s first periodical to successfully employ this photo-mechanical technique; featuring a full page half-tone image of His Royal Highness Prince Arthur, from a photograph by Notman.[4] Ambitious to exploit a much larger circulation, Debarats and Leggo went to New York and launched the New York Daily Graphic in March 1873, which became the world’s first illustrated daily.

The first truly successful commercial method was patented by Frederic Ives of Philadelphia in 1881.[34][35] But although he found a way of breaking up the image into dots of varying sizes he did not make use of a screen. In 1882 the German George Meisenbach patented a halftone process in England. His invention was based on the previous ideas of Berchtold and Swan. He used single lined screens which were turned during exposure to produce cross-lined effects. He was the first to achieve any commercial success withrelief halftones.[34]

Xerography[edit]

Main article: Xerography

Xerography (or electrophotography) is a photocopying technique developed by Chester Carlson in 1938 and patented on October 6, 1942. He received U.S. Patent 2,297,691for his invention. The name xerography came from the Greek radicals xeros (dry) and graphos (writing), because there are no liquid chemicals involved in the process, unlike earlier reproduction techniques like cyanotype.

In 1938 Bulgarian physicist Georgi Nadjakov found that when placed into electric field and exposed to light, some dielectrics acquire permanent electric polarization in the exposed areas.[5] That polarization persists in the dark and is destroyed in light. Chester Carlson, the inventor of photocopying, was originally a patent attorney and part-time researcher and inventor. His job at the patent office in New York required him to make a large number of copies of important papers. Carlson, who was arthritic, found this a painful and tedious process. This prompted him to conduct experiments with photoconductivity. Carlson experimented with “electrophotography” in his kitchen and in 1938, applied for a patent for the process. He made the first “photocopy” using a zinc plate covered with sulfur. The words “10-22-38 Astoria” were written on a microscope slide, which was placed on top of more sulfur and under a bright light. After the slide was removed, a mirror image of the words remained. Carlson tried to sell his invention to some companies, but because the process was still underdeveloped he failed. At the time multiple copies were made using carbon paper or duplicating machines and people did not feel the need for an electronic machine. Between 1939 and 1944, Carlson was turned down by over 20 companies, including IBM and GE, neither of which believed there was a significant market for copiers.

CATEGORIES
TAGS
Share This