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A transparency, also known in industrial settings as a "viewfoil" or "foil", is a thin sheet of transparent flexible material, typically cellulose acetate, onto which figures can be drawn. These are then placed on an overhead projector for display to an audience. Many companies and small organizations use a system of projectors and transparencies in meetings and other groupings of people, though this system is being largely replaced by video projectors and interactive whiteboards. == Printing on transparencies == Transparencies can be printed on in one of two ways. First, a laser printer can be connected to a computer, which is loaded with a cartridge of cellulose acetate sheets. An image or document is then created within the computer, though images are prevalent due to text being illegible at certain distances from a projection, and then formatted to be printed. From there, the printer is engaged and the document printed onto the sheet of acetate. Some people prefer to test the transparency before sending it out to the person requesting it. Secondly, some black and white or color copiers are able to print onto, or can be configured to handle, acetate sheets. A person may place a document or a book on the surface of the copying machine and make one or several copies onto acetate, if there are simultaneous meetings or if another company or organization wants a copy. Specialist transparencies are available for use with laser printers that are better able to handle the high temperatures present in the fuser unit. For inkjet printers, coated transparencies are available that can absorb and hold the liquid ink - although care must be taken to avoid excessive exposure to moisture, which can cause the transparency to become cloudy; they must also be loaded correctly into the printer as they are only usually coated on one side. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Transparency (projection)」の詳細全文を読む スポンサード リンク
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