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公开(公告)号：BR9405287A
公开(公告)日：1995-09-19
申请号：BR9405287
申请日：1994-12-28
Applicant: XEROX CORP
Inventor： FISLI TIBOR , GRAFTON DAVID A
Abstract: A system for eliminating differential scan line bow from raster output scanners aligns at least the chief exit ray (66, 67) of each scanning light beam (61, 62) with the system axis (65). By aligning the chief exit rays to be essentially parallel to the system axis, the overall bow is reduced, and the bow of different scan lines (63, 64) is essentially identical. Thus, bowed scan lines from different stations in a multi-station printer, or from different passes in a multi-pass printer are generally identical and aligned.
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公开(公告)号：DE3164445D1
公开(公告)日：1984-08-02
申请号：DE3164445
申请日：1981-09-29
Applicant: XEROX CORP
Inventor： BRUEGGEMANN HARRY P , GRAFTON DAVID A , ANTOS RONALD L
IPC: B41J2/47 , G02B26/10 , G02B26/12 , G03G15/04 , G06K15/12 , H04N1/036 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/23 , G02B27/17
Abstract: A raster scanner with laser for generating a scanning beam and compact folded optical system for transmitting the beam to the object to be scanned. The optical system includes a first mirror for guiding the laser beam forward along a downwardly inclined slope to the modulator, a second mirror below the modulator for intercepting the beam from the modulator and folding the intercepted beam to guide the beam backwards along a horizontal plane to a third mirror which folds the beam and guides the beam forward along an upwardly inclined slope against the mirrored facets of a rotating polygon, the polygon scanning the beam through a preset scan arc and returning the beam via a focusing lens to the third mirror, the third mirror folding the scan beam and guiding the scan beam forward, and a fourth mirror for intercepting the scan beam and guiding the beam to the object to be scanned.
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公开(公告)号：DE69428508D1
公开(公告)日：2001-11-08
申请号：DE69428508
申请日：1994-12-22
Applicant: XEROX CORP
Inventor： FISLI TIBOR , GRAFTON DAVID A
Abstract: A system for eliminating differential scan line bow from raster output scanners aligns at least the chief exit ray (66, 67) of each scanning light beam (61, 62) with the system axis (65). By aligning the chief exit rays to be essentially parallel to the system axis, the overall bow is reduced, and the bow of different scan lines (63, 64) is essentially identical. Thus, bowed scan lines from different stations in a multi-station printer, or from different passes in a multi-pass printer are generally identical and aligned.
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公开(公告)号：CA1179536A
公开(公告)日：1984-12-18
申请号：CA437168
申请日：1983-09-20
Applicant: XEROX CORP
Inventor： ANTOS RONALD L , BRUEGGEMANN HARRY P , GRAFTON DAVID A
IPC: G02B27/00
Abstract: A raster scanner with laser for generating a scanning beam and compact folded optical system for transmitting the beam to the object to be scanned. The optical system includes a first mirror for guiding the laser beam forward along a downwardly inclined slope to the modulator, a second mirror below the modulator for intercepting the beam from the modulator and folding the intercepted beam to guide the beam backwards along a horizontal plane to a third mirror which folds the beam and guides the beam forward along an upwardly inclined slope against the mirrored facets of a rotating polygon, the polygon scanning the beam through a preset scan arc and returning the beam via a focusing lens to the third mirror, the third mirror folding the scan beam and guiding the scan beam forward, and a fourth mirror for intercepting the scan beam and guiding the beam to the object to be scanned.
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公开(公告)号：CA1166051A
公开(公告)日：1984-04-24
申请号：CA384307
申请日：1981-08-20
Applicant: XEROX CORP
Inventor： ANTOS RONALD L , BRUEGGEMANN HARRY P , GRAFTON DAVID A
IPC: B41J2/47 , G02B26/10 , G02B26/12 , G03G15/04 , G06K15/12 , H04N1/036 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/23 , G02B27/00
Abstract: A raster scanner with laser for generating a scanning beam and compact folded optical system for transmitting the beam to the object to be scanned. The optical system includes a first mirror for guiding the laser beam forward along a downwardly inclined slope to the modulator, a second mirror below the modulator for intercepting the beam from the modulator and folding the intercepted beam to guide the beam backwards along a horizontal plane to a third mirror which folds the beam and guides the beam forward along an upwardly inclined slope against the mirrored facets of a rotating polygon, the polygon scanning the beam through a preset scan arc and returning the beam via a focusing lens to the third mirror, the third mirror folding the scan beam and guiding the scan beam forward, and a fourth mirror for intercepting the scan beam and guiding the beam to the object to be scanned.
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Patent Agency Ranking
公开(公告)号：CA1061616A
公开(公告)日：1979-09-04
申请号：CA240347
申请日：1975-11-21
Applicant: XEROX CORP
Inventor： GRAFTON DAVID A
Abstract: A scanning system is provided which uses directed light from a scanning element, which directed light is reflected from a curved reflective surface for scanning across a medium with a planar object surface. The scanning element includes a planar reflective facet, such as the planar mirrored surface of a galvanometer, which scans the light across the curved reflective surface in a direction normal to its axis of curvature. To provide a linear focal line, the planar surface is tilted from its optical axis by a first angle and is off-set for rotation thogonal to the optical axis of the curved surface.
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公开(公告)号：DE2548921A1
公开(公告)日：1976-06-16
申请号：DE2548921
申请日：1975-10-31
Applicant: XEROX CORP
Inventor： GRAFTON DAVID A
Abstract: A scanning system is provided which uses directed light from a scanning element, which directed light is reflected from a curved reflective surface for scanning across a medium with a planar object surface. The scanning element includes a planar reflective facet, such as the planar mirrored surface of a galvanometer, which scans the light across the curved reflective surface in a direction normal to its axis of curvature. To provide a linear focal line, the planar surface is tilted from its optical axis by a first angle and is off-set for rotation about an axis at a second angle from an optical axis orthogonal to the optical axis of the curved surface.
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公开(公告)号：DE69428508T2
公开(公告)日：2002-05-08
申请号：DE69428508
申请日：1994-12-22
Applicant: XEROX CORP
Inventor： FISLI TIBOR , GRAFTON DAVID A
Abstract: A system for eliminating differential scan line bow from raster output scanners aligns at least the chief exit ray (66, 67) of each scanning light beam (61, 62) with the system axis (65). By aligning the chief exit rays to be essentially parallel to the system axis, the overall bow is reduced, and the bow of different scan lines (63, 64) is essentially identical. Thus, bowed scan lines from different stations in a multi-station printer, or from different passes in a multi-pass printer are generally identical and aligned.
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公开(公告)号：CA1129232A
公开(公告)日：1982-08-10
申请号：CA346319
申请日：1980-02-22
Applicant: XEROX CORP
Inventor： BRUEGGEMANN HARRY P , GRAFTON DAVID A
Abstract: An all mirror facet tracking system including first and second spherical mirrors. Both of the mirrors can be located along the same system axis on opposite sides of a rotating multi-faceted polygon which has its axis of rotation on the system axis. To reduce coma, the spherical mirrors are located along orthogonal system axes and a flat folding mirror is provided between the two spherical mirrors to reduce the angle of incidence of the chief ray with the second spherical mirror.
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公开(公告)号：CA990558A
公开(公告)日：1976-06-08
申请号：CA172182
申请日：1973-05-24
Applicant: XEROX CORP
Inventor： GRAFTON DAVID A , MYCEK EDWARD G , ADAMS LLOYD M , DOUGLAS JAMES R
IPC: G03B21/11
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