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公开(公告)号：DE602006015119D1
公开(公告)日：2010-08-12
申请号：DE602006015119
申请日：2006-04-04
Applicant: XEROX CORP
Inventor： MESTHA LALIT K , LOVE TONYA L , HSU TA-CHEN , DONALDSON PATRICIA J
IPC: G03G13/01
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公开(公告)号：BR0302445A
公开(公告)日：2004-08-24
申请号：BR0302445
申请日：2003-07-22
Applicant: XEROX CORP
Inventor： HUBBLE FRED F , III , LOVE TONYA L , ROBBINS DANIEL A , WALLACE STANLEY J
IPC: G03G15/00
Abstract: A sheet curl measurement system and method and an automatic sheet decurling system controlled thereby for the printed paper sheets output of printer. The sheet curl may be remotely sensed without contacting or interfering with the motion of the sheets in their normal sheet path, using a simple but accurate optical sheet curl sensor operating on a portion of the moving sheet at an angle thereto and perpendicularly thereto, with displacement insensitive optics, in both an angular direction substantially parallel to the sheet movement direction and an angular direction substantially transverse to the sheet movement direction, with ratioing of the two output signals.
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公开(公告)号：CA2435403C
公开(公告)日：2007-01-02
申请号：CA2435403
申请日：2003-07-16
Applicant: XEROX CORP
Inventor： HUBBLE FRED F III , LOVE TONYA L , WALLACE STANLEY J , ROBBINS DANIEL A
Abstract: A sheet curl measurement system and method and an automatic sheet decurling system controlled thereby for the printed paper sheets output of printer. The sheet curl may be remotely sensed without contacting or interfering with the motion of the sheets in their normal sheet path, using a simple but accurate optical sheet curl sensor operating on a portion of the moving sheet at an angle thereto and perpendicularly thereto, with displacement insensitive optics, in both an angular direction substantially parallel to the sheet movement direction and an angular direction substantially transverse to the sheet movement direction, with ratioing of the two output signals.
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公开(公告)号：BRPI0506025A
公开(公告)日：2006-09-19
申请号：BRPI0506025
申请日：2005-12-22
Applicant: XEROX CORP
Inventor： HUBBLE FRED F III , LOVE TONYA L , MESTHA LALIT K , ROBBINS DANIEL A
IPC: G01N21/31
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公开(公告)号：CA2435403A1
公开(公告)日：2004-01-23
申请号：CA2435403
申请日：2003-07-16
Applicant: XEROX CORP
Inventor： HUBBLE FRED F III , WALLACE STANLEY J , ROBBINS DANIEL A , LOVE TONYA L
Abstract: A sheet curl measurement system and method and an automatic sheet decurling system controlled thereby for the printed paper sheets output of printer. The sheet curl may be remotely sensed without contacting or interfering with the motion of the sheets in their normal sheet path, using a simple but accurate optical sheet curl sensor operating on a portion of the moving sheet at an angle thereto and perpendicularly thereto, with displacement insensitive optics, i n both an angular direction substantially parallel to the sheet movement direction and an angular direction substantially transverse to the sheet movement direction, with ratioing of the two output signals.
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Patent Agency Ranking
公开(公告)号：CA2386833A1
公开(公告)日：2002-11-22
申请号：CA2386833
申请日：2002-05-17
Applicant: XEROX CORP
Inventor： HUBBLE FRED F III , MESTHA LALIT K , LOVE TONYA L , SKINNER GARY W , ROBBINS DANIEL A
Abstract: A method is provided for measuring the color of irregular surface materials, including textiles which may provide dissimilar color measurement s from different viewing angles, by illuminating a sampling area of the irregular surface material approximately perpendicularly thereto and measuring the color reflected from that area at a substantial angle, preferably about 45 degrees, with a plurality of separate photodetectors arrayed circularly arou nd the illuminated sampling area of irregular surface material to receive the reflected illumination from substantially opposing directions and at a substantial angle to the illuminated area, for providing a more accurate yet lower cost color measurement system for textiles that can be used easily, quickly, and uncritically in terms of the handling, positioning and orientation of the textile material being tested.
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公开(公告)号：CA2373648C
公开(公告)日：2005-03-22
申请号：CA2373648
申请日：2002-02-27
Applicant: XEROX CORP
Inventor： HUBBLE FRED F III , LOVE TONYA L , ROBBINS DANIEL A
Abstract: An improved and lower cost color spectrophotometer, especially suitable for an on-line color printer color control system, in which plural different spectra LEDs sequentially perpendicularly illuminate a common and substantially circularly illuminated color test area, which may be variably spaced and variably oriented relative to the spectrophotometer, through a common central lens system, and also the reflected illumination therefrom may be measured at 45 degrees thereto by averaging the outputs of photodetectors spaced around that circularly illuminated color test area, to provide reduced sensitivity to the variable angular or azimuthal orientation of the color test area relative to the spectrophotometer, and which photodetectors may be so illuminated by 1:1 optics for spatial insensitivity .
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公开(公告)号：BR0201888A
公开(公告)日：2003-04-22
申请号：BR0201888
申请日：2002-05-21
Applicant: XEROX CORP
Inventor： HUBBLE FRED F , LOVE TONYA L , ROBBINS DANIEL A
Abstract: An improved and lower cost color spectrophotometer, especially suitable for an on-line color printer color control system, in which plural different spectra LEDs sequentially perpendicularly illuminate a common and substantially circularly illuminated color test area, which may be variably spaced and variably oriented relative to the spectrophotometer, through a common central lens system, and also the reflected illumination therefrom may be measured at 45 degrees thereto by averaging the outputs of photodetectors spaced around that circularly illuminated color test area, to provide reduced sensitivity to the variable angular or azimuthal orientation of the color test area relative to the spectrophotometer, and which photodetectors may be so illuminated by 1:1 optics for spatial insensitivity.
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公开(公告)号：CA2373648A1
公开(公告)日：2002-11-22
申请号：CA2373648
申请日：2002-02-27
Applicant: XEROX CORP
Inventor： ROBBINS DANIEL A , LOVE TONYA L , HUBBLE FRED F III
Abstract: An improved and lower cost color spectrophotometer, especially suitable for an on-line color printer color control system, in which plural different spectra LEDs sequentially perpendicularly illuminate a common and substantially circularly illuminated color test area, which may be variably spaced and variably oriented relative to the spectrophotometer, through a common central lens system, and also the reflected illumination therefrom may be measured at 45 degrees thereto by averaging the outputs of photodetectors spaced around that circularly illuminated color test area, to provide reduced sensitivity to the variable angular or azimuthal orientation of the color test area relative to the spectrophotometer, and which photodetectors may be so illuminated by 1:1 optics for spatial insensitivity .
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10.发明专利
公开(公告)号：JP2002365139A
公开(公告)日：2002-12-18
申请号：JP2002111632
申请日：2002-04-15
Applicant: XEROX CORP
Inventor： HUBBLE FRED F III , LOVE TONYA L , ROBBINS DANIEL A
Abstract: PROBLEM TO BE SOLVED: To effectively measure a color contactlessly. SOLUTION: In this on-line color printer control system, substantially circular common irradiation color test areas set in various intervals and orientations with respect to a spectrophotometer 12 are irradiated in order vertically by plural LEDs D1, D2, D3, D4 of different spectra via a common central lens system 13, and reflected beams from the test areas are measured at about 45 deg. with respect to the test areas. Outputs of photodetectors D12 provided with spacing in a periphery of the circular irradiation color test areas are averaged to abate sensitivity to the orientations of various angles or direction angles of the color test areas with respect to the spectrophotometer.
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