Scanners,Photocopy and Laser Printer
Scanner
Scanner OperationThe Cyberware 3D Scanners are designed to scan a wide variety of objects in many configurations. The following sections describe how the scanners work and how they are controlled.
Theory of OperationThe scanner operates on the principle that light in a straight line, reflected off an object, can be viewed at a different angle to reveal a profile of the surface. The greater the angle between the light source and the viewing point, the more pronounced the description of the shape; however, the risk of a given surface being in shadow also increases. The scanner uses a plane of laser light which can be distinguished from most ambient light, and has two viewing points positioned at equal angles on both sides of the light source. A beam splitter (one-way mirror) is used to overlay the two images, so that if one side is shadowed, the other will normally contain the data. A system of mirrors inside the scanner enables the optics to be contained in a smaller space than would otherwise be necessary.
Photocopy system
A photocopy system provides a halftone image of a picture composed of continuous tones by producing a plurality of hollow halftone dots corresponding to the continuous tones. Each of the halftone dots comprises an annulus that has a size that corresponds to the density of a tone on the original picture
Scanner OperationThe Cyberware 3D Scanners are designed to scan a wide variety of objects in many configurations. The following sections describe how the scanners work and how they are controlled.Theory of OperationThe scanner operates on the principle that light in a straight line, reflected off an object, can be viewed at a different angle to reveal a profile of the surface. The greater the angle between the light source and the viewing point, the more pronounced the description of the shape; however, the risk of a given surface being in shadow also increases. The scanner uses a plane of laser light which can be distinguished from most ambient light, and has two viewing points positioned at equal angles on both sides of the light source. A beam splitter (one-way mirror) is used to overlay the two images, so that if one side is shadowed, the other will normally contain the data. A system of mirrors inside the scanner enables the optics to be contained in a smaller space than would otherwise be necessary.
Photocopy system
A photocopy system provides a halftone image of a picture composed of continuous tones by producing a plurality of hollow halftone dots corresponding to the continuous tones. Each of the halftone dots comprises an annulus that has a size that corresponds to the density of a tone on the original picture
Laser Printer
Static electricity is the principle behind laser printing which uses a revolving cylinder, a laser beam, fine powder toner, and heat to create images on paper. Black and white lasers (black toner) are relatively inexpensive and common in many homes and small offices. Color lasers are typically found in service bureaus and commercial printers and may be used to produce high-resolution color digital proofs. Adobe PostScript capabilities found in many laser printers make them popular with graphic designers and desktop publishers who often utilize EPS images and PostScript files. Hewlett-Packard's PCL language is another popular command language used by laser printers.See Laser Printing for more details on operation, history, and current
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