Thermal Copier
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A thermal copier or thermocopier (used as a Tattoo transfer copier) is a kind of photocopi er based on the effect of heat. The original sheet feeds in conjunction with the "thermo-sensitive" paper, generating a copy on its specially treated surface. The black parts on the original sheet, once scanned, make the copier activate the heating elements that produce some
chemical reaction A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...
s on the "thermo-sensitive" copy paper that darkens its surface. After the process, a stable black-and-white image is obtained on the cooled film or paper.Patent thermal copier
/ref> There are several types of thermal printers, among them and marketed at present time as ''Tattoo transfer copiers'', there are two main types made by different manufactures: Thermo-head type and Heat lamp type


Thermo-head type

The black parts on the original sheet, once scanned, make the copier activate the heating elements that produce some
chemical reaction A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...
s on the "thermo-sensitive" copy paper that darkens its surface Process: A special "thermo-sensitive" paper is fed into the copier at the same time but in indirect contact to the original. The thermo-sensitive paper is actually feed between the thermal head and the platen. The copier, while scanning the original, sends an electric current to some selected heating elements of the thermal head, which generate heat. The heated elements correspond to the black areas of the original and, being pressed against the copy paper, make the areas they touch on the "thermo-sensitive" substrate, to become darker.


Heating lamp type

Is a copying machine (in a drawer format) with a
lamp Lamp, Lamps or LAMP may refer to: Lighting * Oil lamp, using an oil-based fuel source * Kerosene lamp, using kerosene as a fuel * Electric lamp, or light bulb, a replaceable component that produces light from electricity * Light fixture, or li ...
as a heat source inside. An original sheet is exposed to the before said heat source in conjunction with future copy paper generating a copy on its specially treated surface. Is a kind of
photocopy A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply. Most modern photocopiers ...
based on the effect of heat - When the black parts of the heat-sensitive paper generate some type of
chemical reaction A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...
. The heat lamp makes indirect revealing. After cooling the film or paper, a stable black-and-white image is obtained. Process: A special "heat sensitized" paper is fed into the copier in direct contact to the original. There is a strong
lamp Lamp, Lamps or LAMP may refer to: Lighting * Oil lamp, using an oil-based fuel source * Kerosene lamp, using kerosene as a fuel * Electric lamp, or light bulb, a replaceable component that produces light from electricity * Light fixture, or li ...
within the machine that heats both original and the "heat sensitized" copy paper. Due to its absorption of heat strokes of black colour areas in the original are hotter than the white areas which reflect light and do not become so hot. These black areas of the original being hot and pressed against the copy paper, make areas with "heat-sensitive" substrate in contact with them to become darker.


Uses

* Thermal Transparencies - They have a layer of silver salt / silver halide. When any part of it is heated it becomes dark
brown Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing or painting, brown is usually made by combining the colors orange and black. In the RGB color model us ...
* Heat shield for silk-screen printing. These screens have a special emulsion. When heated, the emulsion is burned revealing silk screen. * Paper Masters for alcohol copiers. Of great use today in the
tattoo A tattoo is a form of body modification made by inserting tattoo ink, dyes, and/or pigments, either indelible or temporary, into the dermis layer of the skin to form a design. Tattoo artists create these designs using several tattooing ...
technique. Each master has 4 sheets ** The top sheet is white. This is the layer where the image will be transferred. ** The second sheet is not attached and is milky white. Normally this sheet is to be disposed before printing. ** The third sheet is carbon paper (purple/blue). Pressing this coating layer with something sharp or applying heat, the ink is transferred to the top sheet leaving a purple/blue image. ** The fourth sheet is yellow and serves to hold the original in place when using it in an alcohol copier or in a
mimeograph A mimeograph machine (often abbreviated to mimeo, sometimes called a stencil duplicator) is a low-cost duplicating machine that works by forcing ink through a stencil onto paper. The process is called mimeography, and a copy made by the proc ...
.


See also

*
Lightbox A lightbox is a translucent surface illuminated from behind, used for situations where a shape laid upon the surface needs to be seen with high contrast. Types Several varieties exist, depending on their purpose: * Various backlit viewing d ...
* Photo mask * Diazo copier *
Photolith A photolith film is a transparent film, made with some sort of transparent plastic (formerly made of acetate). Nowadays, with the use of laser printers and computers, the photolith film can be based on polyester, vegetable paper or laser film pa ...
*
Verifax copier The Kodak verifax is a photo copying approach that uses a wet colloidal diffusion transfer technique patented by Yutzy, H.C. and Yackel, E.C. (1947) The light source is projected to the top crossing the negative being reflected -more or less, accord ...


References

* {{cite book , author = Alan Pipes , title = Production for GraphicDesigners, url=https://books.google.com/books?id=CdbH9hQSiHAC&dq=thermal+printer+3m&pg=PA253, year=2005, publisher=Laurence King Publishing , isbn = 978-1-85669-458-2 , pages = 253–


External links


Demonstration video of a Thermal copier

Demonstration video of a Thermal copier (bis)
Printing Photography equipment