公开(公告)号：US10233042B1

公开(公告)日：2019-03-19

申请号：US15876643

申请日：2018-01-22

Applicant: XEROX CORPORATION

Inventor： Timothy D Slattery ,  Douglas K Herrmann

IPC: B65H3/14 ,  B65H5/22 ,  B65H3/12 ,  B65H3/48

Abstract: Both the inboard and outboard fluffer nozzles of a top vacuum corrugation feeder are configured to allow adjustability in angle of air flow. This is to allow the direction of the air to be angled more towards the lead edge or trail edge of a top few sheets in a stack of specialty sheets. The fluffer nozzles are also adjustable in a horizontal plane for positioning at desired locations along the sheet stack. This allows the air to overcome barriers created by the design of specialty media that would otherwise trap the air and prevent it from being distributed between sheets. The cross-section of the nozzles is also adjustable, providing a smaller or wider throat in order to allow the air velocity to be optimized to best separate the sheets in problem areas.

公开(公告)号：US10011453B1

公开(公告)日：2018-07-03

申请号：US15685232

申请日：2017-08-24

Applicant: XEROX CORPORATION

Inventor： Ron E Dufort ,  Steven R Moore ,  Timothy D Slattery ,  Erwin Ruiz ,  Charles J Bennett ,  Linn C Hoover

IPC: B65H31/10 ,  B65H31/36 ,  B65H43/06 ,  B65H31/12 ,  B65H31/28 ,  B65H7/20

CPC classification number: B65H31/10 ,  B65H7/20 ,  B65H31/12 ,  B65H31/28 ,  B65H31/36 ,  B65H43/04 ,  B65H43/06 ,  B65H2405/15 ,  B65H2511/152 ,  B65H2511/16 ,  B65H2511/17 ,  B65H2511/20 ,  B65H2553/612 ,  B65H2801/06 ,  B65H2220/03 ,  B65H2220/02 ,  B65H2220/11

Abstract: A sheet stacking system is disclosed that has improved tolerance for sheets that are not flat. Successive sheets are aligned onto a stack by a plurality of registration belts. The heights of the pivoting registration belts are compared with one another to determine the unevenness of the top of the stack. This unevenness is represented by the difference between the heights of the highest and lowest registration belt Δstack-height and is monitored to quantify the planarity of the top of the stack. When the unevenness (Δstack-height) exceeds a threshold, the system switches to a modified method to control the elevation of the stack. This method may include stopping the machine from stacking before the unevenness is too large for the registration belts to uniformly drive sheets. This invention prevents the stacker from attempting to stack when sheets are expected to skew thereby preventing jams and unusable stacks.