Sheet stacking apparatus
Patent 4974828 Issued on December 4, 1990. Estimated Expiration Date: 
February 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPaper sorter Drive system for a collator Sheet handling device Sheet sorting apparatus Image forming apparatus Original feeding apparatus Sheet sorter Patent #: 4676499 InventorsAssigneeApplicationNo. 492296 filed on 02/28/1990US Classes:271/293, With means to increase spacing between receiver defining portions271/176, Responsive to delivered sheet271/202, With means to vary speed of sheets on conveyor(s)271/270, With means to vary speed of conveyor sheet271/294, Receivers moving into registry with delivery zone271/314Rotary conveyorExaminersPrimary: Schacher, Richard A.Attorney, Agent or FirmInternational ClassB65H 029/20Foreign Application Priority Data1986-08-20 JPAbstractA sheet stacking apparatus usable with an image forming apparatus having a sheet discharging outlet includes a sheet stacking portion, a conveyer for receiving a sheet material from the sheet outlet of the image forming apparatus and for conveying the sheet material to the sheet stacking portion, speed controller for changing a conveying speed of the conveyer to provide a first conveying speed while the sheet material is being confined by the image forming apparatus and to provide a second conveying speed which is higher than the first speed after the sheet material is released from the image forming apparatus. | |
