Detack and stripping system
AssigneeXerox Corporation
InventorGerald M. Fletcher
Life of this patent
Estimating the term…
Abstract
In an electrostatographic copying system where a toner image on a photoreceptor is transferred to a copy sheet with transfer charges, which charges are removed from the copy sheet by passing the copy sheet under a detacking corona generator, the body of the copy sheet is supported to insure its stripping from the photoreceptor at a point under the detack corona generating electrode where the transfer charge thereon is only partially neutralized, while a restricted minor area of the lead edge of the copy sheet is stripped further downstream, where it has been substantially fully neutralized, at a fixed position controlled by a mechanical stripper finger.
Claims10
In an electrostatic image reproduction system wherein an image on a first image support surface member is transferred to a second image support surface member at a transfer station by means of electrostatic transfer means leaving an electrostatic transfer charge on the second image support member, and wherein the second image support member is then subjected to transfer charge neutralizing corona emissions by movement through a defined corona emission area from neutralizing corona emission means having a corona emitting element therein to neutralize the transfer charge on the second image support member, and wherein the second image support member is stripped from the first image support member by stripping means and transported away from said first image support member with transport means, and wherein said second image support member moves through the transfer station with a lead edge first, the improvement comprising the steps of:
- stripping the lead edge of the second image support member away from the first image support member at a first fixed stripping position which is after the lead edge has moved through substantially the entire defined area of said neutralizing corona emissions from said neutralizing corona emission means by mechanically preventing the movement of the lead edge on said first image support member beyond said first fixed stripping position by the stripping means, and
- then, after the lead edge of the second image support member has been stripped away from the first image support member, shifting the stripping position of the remainder of the second image support member to a second fixed stripping position intermediately of said defined area of corona emissions by holding a portion of the second image support member on the transport means at a fixed position spaced relative to the first image support surface and the transfer charge neutralizing corona emitting element.
In an electrostatic image reproduction system wherein an image on a first image support surface member is transferred to a second image support surface member at a transfer station by electrostatic transfer means leaving an electrostatic transfer charge on the second image support member, and wherein the second image support member is then subjected to transfer charge neutralizing corona emissions by movement, with a lead edge first, through a defined corona emission area from neutralizing corona emission means having a corona emitting element therein to neutralize the transfer charge on the second image support member, and wherein the second image support member is stripped from the first image support member by stripping means and transported away from said first image support member by transport means, the improvement wherein:
- said stripping means strips the lead edge of the second image support member away from the first image support member at a first fixed stripping position located after the lead edge has moved through substantially the entire defined area of said neutralizing corona emissions from said neutralizing corona emission means by said stripping means positively mechanically preventing the movement of the lead edge on said first image support member beyond said first fixed stripping position, and
- said transport means shifting the stripping position of the remainder of the second image support member to a second fixed stripping position which is intermediate said defined area of corona emissions, and substantially spaced from said first fixed stripping point, by holding a portion of the second image support member on said transport means at a fixed position spaced relative to the first image support surface and the transfer charge neutralizing corona emitting element after the lead edge of the second image support member has been stripped away from the first image support member.
Dependencies are inferred from the claim text.