Sheet handling mechanism for duplicating machine with duplexing capability
AssigneeAM International, Inc.
InventorStanley Witczak
Life of this patent
Estimating the term…
Abstract
A sheet handling mechanism for use in a duplicating machine for duplicating images on both sides of copy sheets including a first printing couple for transferring a first image to a first side of a copy sheet and a second printing couple for transferring a second image to a second side of the sheet. The sheet handling mechanism includes a conveyor movable between the first and second printing couples. Gripper mechanism are operatively associated with the conveyor for gripping the lead end of a copy sheet issuing from the first printing couple and rotating the sheet about an axis generally parallel to the direction of movement of the conveyor to present the second side of the sheet, lead end first, to the second printing couple.
Claims14
In a duplicating machine for duplicating images on both sides of copy sheets including a first printing couple for transferring a first image to a first side of a copy sheet and a second printing couple for transferring a second image to a second side of the sheet, means for handling said sheets for duplexing said images thereon, comprising:
- conveyor means movable between said first and second printing couples;
- and
- means operatively associated with said conveyor means for gripping the lead end of a copy sheet issuing from said first printing couple and rotating the sheet about an axis generally parallel to the direction of movement of said conveyor means to present the second side of the sheet to said second printing couple.
In a duplicating machine for duplicating images on both sides of copy sheets including a first printing couple for transferring a first image to a first side of a copy sheet and a second printing couple for transferring a second image to a second side of the sheet, means for handling said sheets for duplexing said images thereon, comprising:
- a pair of generally parallel, endless drive chains movable along forward and return runs between said first and second printing couples;
- a gripper bar for engaging the lead end of a copy sheet as the sheet issues from said first printing couple;
- means mounting said gripper bar transversely between said drive chains for movement with the drive chains;
- rotating means between said gripper bar and said mounting means for rotating the sheet about an axis generally parallel to the direction of movement of the drive chains to present the second side of the sheet to said second printing couple;
- and
- cam means disposed at a predetermined location along said forward run of said drive chains and operatively associated with said rotating means for effecting said rotation of said gripper bar.
Dependencies are inferred from the claim text.