Sheet delivery device
AssigneeMitsubishi Jukogyo Kabushiki Kaisha
InventorsTadashi Hirakawa, Arifumi Okamoto
Life of this patent
Estimating the term…
Abstract
A sheet delivery device of the type in which each sheet delivered by a moving suction unit is received and delivered again by feed rolls. The sheet delivery device features a control unit which detects whether or not each sheet is delivered in synchronization with the operation timing of equipment positioned on the downstream side of delivery effected by the feed rolls and sends a signal obtained when no synchronized delivery takes place to a rotation driving unit of the feed rolls to change the revolution speed of the feed rolls thereby to realize the synchronized delivery of each sheet. Oblique delivery of the sheet is corrected by the use of divided, independently rotation controlled pairs of feed rolls.
Claims8
A sheet delivery device comprising:
- a movable suction unit for moving individual sheets in a sheet delivery direction away from a sheet supply position at which one or more sheets are supplied to said delivery device;
- sheet processing equipment located along said sheet delivery direction for processing each sheet moved by said movable suction unit;
- feed rolls positioned between said movable suction unit and said sheet processing equipment for delivering sheets from said movable suction unit to said sheet processing equipment, said feed rolls including at least one first roll, a first motor connected to said first roll, at least one second roll spaced from said first roll in a direction perpendicular to said sheet delivering direction and a second motor connected to said second roll, said first and second motors being operable to correct the orientation of each sheet by independently rotating said first and second rolls at different speeds and said first and second motors being operable to adjust the speed of delivery of each sheet to correspond to the operation of said sheet processing equipment;
- sheet orientation sensor means for detecting the orientation of each sheet delivered by said feed rolls;
- sheet processing equipment sensor means for detecting a reference point in operation of said sheet processing equipment;
- sheet position sensor means for detecting when each sheet arrives at a reference position;
- and
- control unit means connected to said first and second motors, said sheet orientation sensor means, said sheet processing equipment sensor means and said sheet position sensor means for individually controlling rotation of said first and second rolls to correct any deviation in the orientation of each sheet and for controlling the speed of delivery of each sheet to correspond with the operation of said sheet processing equipment.
Dependencies are inferred from the claim text.