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The most recent development related to photoplotting is laser direct imaging (LDI) which utilizes a high-power laser or xenon lamp to directly expose photoresist on a coated substrate instead of exposing photographic film. This eliminates the handling of photographic film.
103:. Draws are vectors or arcs created by continuous illumination as the imaging head moves over the photosensitive surface. A flash creates a single simple graphic in a location by shining light through an aperture of the appropriate shape at a fixed location.
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onto the photosensitive surface of the film or glass plate. The imaging head assembly traversed over the surface of the media without touching it to produce
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for PCB files, eventually became an industry standard for describing the printed circuit board images such as the copper layers, solder mask and legend.
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is a specialized electro-opto-mechanical machine that exposes a latent image on a medium, usually high-contrast monochromatic (
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with sub-micrometer feature sizes; photomasks are traditionally made by photoreducing photoplotter output.
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and are limited in resolution by the technology in use; in 1998 photoplots with resolvable details of 2.5
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Other application of photoplotters include chemical milling and specialized graphic arts.
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or more were possible. Integrated circuits are made in a similar fashion utilizing
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47:(IC) packaging. In the PCB industry, photoplotting is the first step of making
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386:, 15 September 1970, 3 October 1972. Gerber variable shutter patent.
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The input of photoplotters is a vector graphics file, typically in
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Printed
Circuit Boards: Design, Fabrication, Assembly and Testing
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The
Inventor's Dilemma: The Remarkable Life of H. Joseph Gerber
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Photoplotters are used primarily for industrial production of
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Manufacturers of photoplotters include Gerber
Scientific,
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masks for printed circuit boards. These masks are called
298:. Springer Science & Business Media. pp. 196–.
163:. Springer Science & Business Media. pp. 17–.
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Complete PCB Design Using OrCAD Capture and PCB Editor
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beam focused to one or more spots, modulated at multi-
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control. Once the film has been exposed, it must be
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268:Printed Circuit Board Design Using AutoCAD
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160:Handbook of Printed Circuit Manufacturing
76:The first photoplotter was introduced by
239:. Yale University Press. pp. 167–.
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384:Variable Aperture Photoexposure Device
189:. United Technical Publications. 1989.
157:Raymond H. Clark (6 December 2012).
292:Jorge L.C. Sanz (1 December 1988).
202:Electronic Packaging and Production
106:Modern photoplotters are generally
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328:. Tata McGraw-Hill Education.
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352:Kraig Mitzner (28 May 2009).
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28:, using a light source under
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219:Kempe's Engineers Year-book
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295:Advances in Machine Vision
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400:Electronics manufacturing
118:rates to form the image.
265:Chris Schroeder (1998).
233:David J. Gerber (2015).
322:R. S. Khandpur (2005).
78:Gerber Scientific, Inc.
216:Carill Sharpe (1994).
87:Early machines used a
41:printed circuit boards
205:. Cahners Pub. 1987.
382:Ronald B. Webster,
186:Electronic Products
110:devices that use a
45:integrated circuit
365:978-0-08-094354-1
335:978-0-07-058814-1
305:978-0-387-96822-3
278:978-0-7506-9834-4
246:978-0-300-12350-0
170:978-94-011-7012-3
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18:photoplotter
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108:raster-scan
394:Categories
358:. Newnes.
271:. Newnes.
144:References
62:photomasks
53:photoplots
43:(PCB) and
116:megahertz
34:processed
405:Plotters
134:Orbotech
30:computer
101:flashes
72:History
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138:Ucamco
112:laser
97:draws
360:ISBN
330:ISBN
300:ISBN
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165:ISBN
136:and
99:and
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16:A
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