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公开(公告)号：DE69516489D1
公开(公告)日：2000-05-31
申请号：DE69516489
申请日：1995-11-29
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY , BULLOCK ROGER L , FLECK THOMAS J , PIETROWSKI KENNETH W , TABB CHARLES H , YU ZHAO-ZHI , GWALTNEY MARK A
Abstract: In a multi-color imaging apparatus utilizing a recharge step (d) between two image creation steps (B,C;38,E) for recharging a charge retentive surface (10) to a predetermined potential pursuant to forming the second of the two images, a first corona generating device (36) recharges the charge retentive surface to a higher absolute potential than the predetermined potential, and then a second corona generating device (37) recharges the charge retentive surface to the predetermined potential. An electrical charge associated with the first image is substantially neutralized after being recharged by the first and second corona generating device.
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公开(公告)号：BR9505518A
公开(公告)日：1997-10-28
申请号：BR9505518
申请日：1995-11-24
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY J , BULLOCK ROGER L , FLECK THOMAS J , PIETROWSKI KENNETH W , TABB CHARLES H , YU ZHAO-ZHI , GWALTNEY MARK A
Abstract: In a multi-color imaging apparatus utilizing a recharge step (d) between two image creation steps (B,C;38,E) for recharging a charge retentive surface (10) to a predetermined potential pursuant to forming the second of the two images, a first corona generating device (36) recharges the charge retentive surface to a higher absolute potential than the predetermined potential, and then a second corona generating device (37) recharges the charge retentive surface to the predetermined potential. An electrical charge associated with the first image is substantially neutralized after being recharged by the first and second corona generating device.
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公开(公告)号：JP2000347480A
公开(公告)日：2000-12-15
申请号：JP2000133142
申请日：2000-05-02
Applicant: XEROX CORP
Inventor： FLECK THOMAS J , PIETROWSKI KENNETH W , SONG JING QING
Abstract: PROBLEM TO BE SOLVED: To uniformize the potentials of a toner sticking area and a toner non sticking area of a photoreceptor when electrifying the photoreceptor again in an image-on-image-process of a color electrophotographic printing device of a once-pass method. SOLUTION: In the electrifying device 22, (a) a corona generating element 202 to generate electrifying ions, (b) a grid 208 that is imparted with a bias grid potential, installed a specified distance away from the corona generating element 202 and where ion is allowed to pass through grid wire and continue to adhere to its surface until charge that is sufficiently near the grid potential is reached on the surface and (c) an electrode 210 to increase the uniformity of the charge on the above mentioned surface in conjunction with the grid are provided.
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公开(公告)号：BR0001752A
公开(公告)日：2001-01-02
申请号：BR0001752
申请日：2000-05-12
Applicant: XEROX CORP
Inventor： FLECK THOMAS J , PIETROWSKI KENNETH W , SONG JING QUING
Abstract: In an electrostatographic imaging apparatus employing at least one charging device , scorotron which consists of one or more fine wires supported on insulated blocks spaced between the photoconductive surface and a conductive or insulative surface parallel to it. A screen or grid is interposed between the corona wires and the photoconductive surface and the grid is maintained at a potential roughly equal to the potential desired on the photoconductive surface. The scorotrons geometry, the individual wires are from 1/2 to 11/2 inches apart and are spaced from the grid by about 3/4 of an inch. Field enhancement electrode(s) are placed on the screen and are biased at the same potential as the screen. The field enhancement electrode(s) enhance electrical performance.
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Patent Agency Ranking
公开(公告)号：DE69515001D1
公开(公告)日：2000-03-16
申请号：DE69515001
申请日：1995-11-29
Applicant: XEROX CORP
Inventor： PIETROWSKI KENNETH W , ING SAMUEL W , BULLOCK ROGER L , FLECK THOMAS J , TABB CHARLES H , YU ZHAO-ZHI , FOLKINS JEFFREY J , BRAY DANIEL M , EDMUNDS CYRIL G
Abstract: A multi-color imaging apparatus uses a recharge step between image creation steps in order to condition a charge retentive surface (10) prior to forming the second and subsequent images. A voltage sensitive corona generating device (36,51,61) having a high characteristic slope described in a graph of the current delivered to a charge receiving surface (I) vs. grid minus charge receiving surface voltage (V) is used to both reduce the residual toner voltage across the previously toned image and to charge the toned and untoned areas of the charge retentive surface to a substantially uniform level, so that developability conditions for the subsequent image are improved.
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公开(公告)号：DE60015852T2
公开(公告)日：2005-03-31
申请号：DE60015852
申请日：2000-05-11
Applicant: XEROX CORP
Inventor： FLECK THOMAS J , PIETROWSKI KENNETH W , SONG JING QING
Abstract: In an electrostatographic imaging apparatus employing at least one charging device , scorotron which consists of one or more fine wires supported on insulated blocks spaced between the photoconductive surface and a conductive or insulative surface parallel to it. A screen or grid is interposed between the corona wires and the photoconductive surface and the grid is maintained at a potential roughly equal to the potential desired on the photoconductive surface. The scorotrons geometry, the individual wires are from 1/2 to 11/2 inches apart and are spaced from the grid by about 3/4 of an inch. Field enhancement electrode(s) are placed on the screen and are biased at the same potential as the screen. The field enhancement electrode(s) enhance electrical performance.
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公开(公告)号：DE69515001T2
公开(公告)日：2000-07-20
申请号：DE69515001
申请日：1995-11-29
Applicant: XEROX CORP
Inventor： PIETROWSKI KENNETH W , ING SAMUEL W , BULLOCK ROGER L , FLECK THOMAS J , TABB CHARLES H , YU ZHAO-ZHI , FOLKINS JEFFREY J , BRAY DANIEL M , EDMUNDS CYRIL G
Abstract: A multi-color imaging apparatus uses a recharge step between image creation steps in order to condition a charge retentive surface (10) prior to forming the second and subsequent images. A voltage sensitive corona generating device (36,51,61) having a high characteristic slope described in a graph of the current delivered to a charge receiving surface (I) vs. grid minus charge receiving surface voltage (V) is used to both reduce the residual toner voltage across the previously toned image and to charge the toned and untoned areas of the charge retentive surface to a substantially uniform level, so that developability conditions for the subsequent image are improved.
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公开(公告)号：DE60015852D1
公开(公告)日：2004-12-23
申请号：DE60015852
申请日：2000-05-11
Applicant: XEROX CORP
Inventor： FLECK THOMAS J , PIETROWSKI KENNETH W , SONG JING QING
Abstract: In an electrostatographic imaging apparatus employing at least one charging device , scorotron which consists of one or more fine wires supported on insulated blocks spaced between the photoconductive surface and a conductive or insulative surface parallel to it. A screen or grid is interposed between the corona wires and the photoconductive surface and the grid is maintained at a potential roughly equal to the potential desired on the photoconductive surface. The scorotrons geometry, the individual wires are from 1/2 to 11/2 inches apart and are spaced from the grid by about 3/4 of an inch. Field enhancement electrode(s) are placed on the screen and are biased at the same potential as the screen. The field enhancement electrode(s) enhance electrical performance.
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公开(公告)号：DE69516489T2
公开(公告)日：2000-08-24
申请号：DE69516489
申请日：1995-11-29
Applicant: XEROX CORP
Inventor： FOLKINS JEFFREY , BULLOCK ROGER L , FLECK THOMAS J , PIETROWSKI KENNETH W , TABB CHARLES H , YU ZHAO-ZHI , GWALTNEY MARK A
Abstract: In a multi-color imaging apparatus utilizing a recharge step (d) between two image creation steps (B,C;38,E) for recharging a charge retentive surface (10) to a predetermined potential pursuant to forming the second of the two images, a first corona generating device (36) recharges the charge retentive surface to a higher absolute potential than the predetermined potential, and then a second corona generating device (37) recharges the charge retentive surface to the predetermined potential. An electrical charge associated with the first image is substantially neutralized after being recharged by the first and second corona generating device.
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