Document transport system
AssigneeAddressograph Multigraph Corporation
InventorWilburn F. Bradbury
Life of this patent
Estimating the term…
Abstract
The drawings and specification set forth a structure in which one sheet at a time is dispensed to a utilization device, which is a table top and a belt drag conveyor. As the sheet is dispensed from the feeder, it trips a switch which starts the utilization device and turns off the feeder. The utilization device may be a photocopier table, for example, and the drag conveyor brings the document to be copied to a specific register line without the use of stops which might damage the forward edge of a document. The system is coordinated by a controller which will supply the documents to be copied at a maximum rate one after the other for collating, or on command, according to operator preference.
Claims2
In a photocopier having a transparent document positioning table, first and second spaced belt guides positioned above said table, a belt reeved over said guides with the bottom run resting on said table and a return run extending between the tops of said guides, said belt forming an entrance nip as it loops over said first guide to the table surface,
- the provision of a drive system for said belt to cause said belt to first move a sheet presented to the entrance nip to an exposure station on said table, to pause, and then resume moving to initiate exit of the sheet, comprising:
- a rotatable power driven shaft connected to said belt to drive said belt;
- means to sense presentation of the lead edge of a sheet to said nip and to initiate rotation of said power driven shaft and the resulting belt drive motion in response thereto;
- a circuit control means for:
- 1. assuming control of said belt drive motion from said means to initiate rotation in response to initial rotation of said power driven shaft;
- 2. continuing the drive motion of the belt for a predetermined belt advancement across the table sufficient to have transported the sensed lead edge of a sheet from said nip to a predetermined lead edge position for exposure, and then stopping the drive at that position;
- and
- 3. reinstating drive motion of the belt subsequent to an exposure sequence, for a further travel sufficient to have transported a sheet off of the exposure station.
Dependencies are inferred from the claim text.