Procedure and device for separation of sheets of a medium
OwnerHelmut Steinhilberinventor
Life of this patent
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Abstract
Sheets (12, 14) of a medium stored in a stack (10) are separated and fed into an office machine. The edge of the top sheet (12) is lifted off the corresponding edge of the following second sheet (14). At least one separator (26) is inserted into the gap (32) resulting from the lifting of the top-sheet (12) and the top sheet (12) is lifted by the separator from the following sheet (14). This causes a reduction of the friction between the top sheet (12) and the following sheet (14) during separation of the top sheet (12), so that the electrical charge of the sheets (12, 14) generated by this friction is minimized.
Claims20
A method for separation of sheets of a medium for feeding to a machine, wherein the sheets are kept in a stack for feeding to the machine in a feed direction, the method comprising:
- advancing the top sheet of the stack in the feed direction further than the following sheet on the stack such that the top sheet interacts with a lifting system;
- after advancing the top sheet in the feed direction further than the following sheet, the lifting system lifting a front edge of the top sheet of the stack from the following sheet on the stack, wherein a significant non-edge portion of a bottom surface of the top sheet remains in contact with a top surface of the following sheet;
- moving at least one elongated separator from a front side of the stack facing the feed direction into a gap formed between the lifted edge of the top sheet and the corresponding edge of the following sheet;
- and
- moving the separator in the opposite direction of the feed direction between the top sheet and the following sheet in order to substantially separate the bottom surface of the top sheet from the top surface of the following sheet.
A method for separation of sheets of a medium for feeding to a machine, wherein the sheets are kept in a stack for feeding to the machine in a feed direction, the method comprising:
- advancing the top sheet of the stack in the feed direction further than the following sheet on the stack such that the top sheet interacts with a lifting system;
- after advancing the top sheet in the feed direction further than the following sheet, the lifting system lifting a front edge of the top sheet of the stack from the following sheet on the stack such that the top sheet bows due to its weight and a non-edge portion of a bottom surface of the top sheet remains in contact with a top surface of the following sheet;
- moving at least one elongated separator from a front side of the stack facing the feed direction into a gap formed between the lifted edge of the top sheet and the corresponding edge of the following sheet;
- and
- moving the separator in the opposite direction of the feed direction between the top sheet and the following sheet in order to substantially separate the bottom surface of the top sheet from the top surface of the following sheet.
A device for separation of sheets of a medium for feeding to a machine, wherein the sheets are kept in a stack for feeding to the machine in a feed direction and the top sheet of the stack is lifted from the following sheet on the stack at a front edge of the top sheet facing the feed direction and fed to the machine, the device comprising:
- an advancement apparatus configured to advance the top sheet of the stack in the feed direction further than the following sheet on the stack;
- a lifting apparatus configured to receive the top sheet from the advancement apparatus and lift the front edge of the advanced top sheet facing the feed direction from the following sheet such that a significant non-edge portion of a bottom surface of the top sheet remains in contact with a top surface of the following sheet;
- and
- at least one elongated separator at the front side of the stack facing the feed direction configured for movement in the opposite direction of the feed direction into a gap formed between the lifted edge of the top sheet and the following sheet in order to substantially separate the bottom surface of the top sheet from the top surface of the following sheet.
Dependencies are inferred from the claim text.