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公开(公告)号：DE60018859T2
公开(公告)日：2005-07-28
申请号：DE60018859
申请日：2000-08-08
Applicant: XEROX CORP
Inventor： PIETROWSKI KENNETH W , RADULSKI CHARLES A
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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：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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Patent Agency Ranking
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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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：DE69113532D1
公开(公告)日：1995-11-09
申请号：DE69113532
申请日：1991-07-02
Applicant: XEROX CORP
Inventor： PIETROWSKI KENNETH W , RADULSKI CHARLES A
IPC: G03G15/16
Abstract: An electrophotographic device includes a flexible belt-type charge retentive member (10), bearing a developed latent image and brings a sheet of paper or other transfer member into intimate contact with the charge retentive surface at a transfer station (D) for electrostatic transfer of toner from the charge retentive surface to the sheet. At the transfer station, a resonator (150, 152) suitable for generating vibratory energy is arranged in line contact with the back side of the charge retentive , to uniformly apply vibratory energy to the charge retentive member surface at a position opposite the transfer coronode, or peak transfer field, of the conrona transfer device (40), or slightly upstream therefrom. Toner is released from the electrostatic and mechanical forces adhering it to the charge retentive surface at the line contact position.
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公开(公告)号：CA2082354A1
公开(公告)日：1993-05-09
申请号：CA2082354
申请日：1992-11-06
Applicant: XEROX CORP
Inventor： GROSS ROBERT A , PIETROWSKI KENNETH W
IPC: G03G15/16
Abstract: A method and apparatus for extending the electrical life of a bias transfer roll (32) is disclosed. The apparatus includes a biasing member (48) comprising a bias roll member or other charging device for reversing current flow through the bias transfer roll (32). The apparatus of the present invention permits reversal of current flow through a bias transfer roll (32) to replenish ions depleted therefrom during the transfer process.
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公开(公告)号：BRPI0503010A
公开(公告)日：2006-03-01
申请号：BRPI0503010
申请日：2005-07-14
Applicant: XEROX CORP
Inventor： FACCI JOHN S , KUMAR AJAY , MCGRATH RACHAEL L , ZONA MICHAEL F , PIETROWSKI KENNETH W
IPC: G03G15/02
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