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1. 发明公开

EP4219365A1 SHEET STACKER FOR THIN OR WEAK PRINT MEDIA 审中-实审
公开(公告)号：EP4219365A1
公开(公告)日：2023-08-02
申请号：EP22154460.4
申请日：2022-02-01
申请人： Canon Production Printing Holding B.V.
发明人： VAN DONGEN, Peter J.W. , KUYPERS, Hermanus M. , ZEELEN, Frank J.W.
IPC分类号： B65H29/52 , B65H29/40 , B65H29/24
摘要： When using a flipping wheel to flip sheets of weak or long media, there is a risk that these sheets collapse upon themselves. To reduce this risk, a method of stacking sheets is provided comprising the steps of:
- flipping a sheet (S) while holding its leading edge (LE) and bringing said leading edge (LE) down towards a stack support (68);
- bringing a trailing portion of the sheet (S) into contact with a guide member (90) positioned over the stack support (68);
- forming an overpressure in an inner volume (IV) of the bent sheet (S) during flipping, while its trailing portion is in contact with the guide member (90); and
- maintaining said overpressure and contact while a trailing edge (TE) of the sheet (S) travels along the guide member (90).

2. 发明公开

EP4089042A1 SHEET STACKER MODULE, METHOD OF STACKING SHEETS, AND CORRESPONDING SOFTWARE PRODUCT 审中-实审
公开(公告)号：EP4089042A1
公开(公告)日：2022-11-16
申请号：EP21173145.0
申请日：2021-05-10
申请人： Canon Production Printing Holding B.V.
发明人： HENDERICKX, Johannes, A.M. , KUYPERS, Hermanus M. , ROSENBOOM, Fabian T. , HOLTMAN, Lodewijk T. , CURRAN, Joshua D. , VERHOEVEN, Erik P.J. , PEULEN, Johannes E.P. , BERGMANS, Maikel W.H. , LINDERS, Luc , LOOIJMANS, Rob J.E.
IPC分类号： B65H31/30 , B65H31/10 , B65H43/06
摘要： A stacker module comprising a lift table (10), a stacker (12) configured to place sheets (14) that are successively supplied thereto onto the top of a stack (18) forming on the lift table (10), a controller (20) configured to lower the lift table as the stack grows, a height-adjustable eject table (22), and an eject mechanism (24) configured to transfer a completed stack (18; 18') from the lift table (10) onto the eject table (22), characterized in that the eject mechanism (24) is height-adjustable for transferring stacks onto the eject table (22) in different height positions of the lift table (10).

3. 发明公开

EP3901073A1 A SHEET FLIPPING DEVICE 有权
公开(公告)号：EP3901073A1
公开(公告)日：2021-10-27
申请号：EP20170437.6
申请日：2020-04-20
申请人： Canon Production Printing Holding B.V.
发明人： ROSENBOOM, Fabian T. , HOLTMAN, Lodewijk T. , KUYPERS, Hermanus M.
IPC分类号： B65H29/40 , B65H29/12 , B65H31/36
摘要： A sheet flipping device comprising:
- a flipping element (10) rotatably disposed adjacent to a sheet receiving plane (14) and having, in its outer periphery, at least two insertion slots (20, 22) for insertion of a respective leading edge of a sheet (48) to be flipped;
- a sheet transport device (44) configured for feeding sheets with their respective leading edges into the insertion slots (20, 22); and
- a controller configured to control the sheet transport device (44) and a rotary drive (54) for the flipping element (10) such that each sheet the leading edge of which has been inserted into one of the insertion slots (20, 22) is temporarily restrained while the transport mechanism (44) continues to feed the sheet, so that the sheet flips over, and the sheet is then dropped onto the receiving plane (14),
characterized in that each insertion slot (20, 22) has a mouth (26) defined between a peripheral surface of the flipping element (10) and a flexible finger (28) that extends tangentially from said peripheral surface, the controller is configured to move one of the insertion slots (20, 22) into a sheet receiving position regardless of whether or not a trailing edge of a preceding sheet has left the sheet transport device, and the flexible finger (28) has sufficient flexibility to be deflected by a sheet which has its trailing edge still held in the sheet transport device (44).

4. 发明公开

EP4299495A1 SHEET STACKER COMPRISING A GRIPPER WITH ADJUSTABLE SHEET HOLDING FORCE 审中-公开
公开(公告)号：EP4299495A1
公开(公告)日：2024-01-03
申请号：EP22182109.3
申请日：2022-06-30
申请人： Canon Production Printing Holding B.V.
发明人： BORCHERT, Christopher J. , VAN DONGEN, Peter J.W. , KUYPERS, Hermanus M.
IPC分类号： B65H29/04 , B65H29/40 , B65H29/06
摘要： Sheet deformation and misalignment of sheets in a stack when stacking sheets can be reduced or even prevented by the steps of:
- a gripper arrangement (14, 114, 214) receiving a first sheet (25) of a first stiffness, the gripper arrangement holding the first sheet by a predetermined, first holding force, and releasing the first sheet from the gripper arrangement by the gripper arrangement moving the first sheet against a stop element (15, 115);
- the gripper arrangement receiving a second sheet (24) of a second stiffness, the gripper arrangement holding the second sheet by a predetermined, second holding force, and releasing the second sheet from the gripper arrangement by the gripper arrangement moving the second sheet against a stop element,
wherein the second stiffness of the second sheet is greater than that of the first sheet and that the second holding force is greater than the first holding force.

5. 发明公开

EP3758945A1 DEFLECTING DEVICE FOR DEFLECTING A CONVEYED SHEET 有权
公开(公告)号：EP3758945A1
公开(公告)日：2021-01-06
申请号：EP19706649.1
申请日：2019-02-25
申请人： Canon Production Printing Holding B.V.
发明人： VROMEN, Thijs G.M. , KUYPERS, Hermanus M. , HOOGENDIJK, Rob , LA VOS, Peter G.
IPC分类号： B41J3/60 , B41J13/00

6. 发明公开

EP4242149A1 AN INKJET SHEET PRINTER WITH A SHEET STACKER COMPRISING A SHEET FLIPPING DEVICE 审中-实审
公开(公告)号：EP4242149A1
公开(公告)日：2023-09-13
申请号：EP22161173.4
申请日：2022-03-09
申请人： Canon Production Printing Holding B.V.
发明人： BORCHERT, Christopher J. , VAN DONGEN, Peter J.W. , KUYPERS, Hermanus M.
IPC分类号： B65H29/40 , B65H43/00
摘要： To prevent deformation to relatively stiffer sheets during flipping, while ensuring reliable holding of relatively weaker sheets, a method for stacking sheets (S) received from a printer (1) by means of a sheet flipping device (12) comprising at least one slot (16, 17) for receiving a leading portion of a sheet (S) is provided. The method comprising the steps of:
- determining a respective insertion depth parameter (D) for a first and a second sheet (S), wherein the second sheet (S) has a greater stiffness than the first sheet (S);
- inserting a length (D1) of the first sheet (S) into at the least one slot (16, 17) in correspondence with its respective insertion depth parameter (D), followed by flipping said first sheet (S);
- inserting a length (D2) of the second sheet (S) into at the least one slot (16, 17) in correspondence with its respective insertion depth parameter (D), followed by flipping said second sheet (S), wherein the inserted length (D1) of the first sheet (S) is greater than that of the second sheet (S).

7. 发明公开

EP3960671A1 SHEET STACKING APPARATUS AND METHOD OF ALIGNING AND STACKING SHEETS 审中-实审
公开(公告)号：EP3960671A1
公开(公告)日：2022-03-02
申请号：EP20193966.7
申请日：2020-09-01
申请人： Canon Production Printing Holding B.V.
发明人： HOLTMAN, Lodewijk T. , ROSENBOOM, Fabian T. , KUYPERS, Hermanus M.
IPC分类号： B65H29/04 , B65H31/26 , B65H9/00
摘要： A sheet stacking apparatus comprising:
- a sheet alignment mechanism (12) configured for aligning a sheet (24) in a predetermined reference position (26);
- a gripper arrangement (14) configured to grip the aligned sheet (24) at at least two spaced-apart points of the sheet and to release the sheet on a stack (20); and
- a holder (18) configured to hold the sheet in position on the stack (20) while the gripper arrangement (14) releases the sheet,
characterized in that the gripper arrangement (14) is movable along a predetermined trajectory for moving the sheet from the reference position (26) to a stacking position (44).

8. 发明公开

EP3636568A1 SHEET TRANSPORT APPARATUS FOR AN INKJET SHEET PRINTER 有权转让
公开(公告)号：EP3636568A1
公开(公告)日：2020-04-15
申请号：EP18199356.9
申请日：2018-10-09
申请人： Canon Production Printing Holding B.V.
发明人： NELLEN, Wilhelmus H.J. , DU BUF, Gerrit P.J. , KUYPERS, Hermanus M.
IPC分类号： B65H5/22 , B41J11/00
摘要： The present invention provides a low costs sheet transport apparatus comprising an endless air permeable belt (101). An endless protrusion (102) is secured onto the belt and extending a predetermined height out of the surface of the belt. A plurality of rollers (110-113) comprising a driving roller (110) driveable by means of an actuator (122) and at least one support roller (111-113) positioned with respect to the driving roller to tension the belt over the plurality of rollers, such that a rotation of the driving roller moves the belt in a transport direction (D) is provided. At least one of the plurality of rollers comprises an endless recess (115) dimensioned to receive the protrusion, such that the protrusion is substantially prevented from transferring driving forces in the transport direction from the plurality of rollers to the belt. The protrusion is suspended within the recess such that it is prevented from transferring forces in the transport direction to belt.

9. 发明公开

EP4011813A1 SHEET STACKER COMPRISING A SHEET FLIPPING DEVICE AND A SUPPORT DEVICE 有权
公开(公告)号：EP4011813A1
公开(公告)日：2022-06-15
申请号：EP20212415.2
申请日：2020-12-08
申请人： Canon Production Printing Holding B.V.
发明人： KUYPERS, Hermanus M. , HOLTMAN, Lodewijk T. , ROSENBOOM, Fabian T.
IPC分类号： B65H29/40 , B65H31/36
摘要： During flipping sheets (S) may fold upon themselves under the influence of gravity. To prevent it a sheet stacker (1; 100; 200) is provided with a support device (20; 120; 220) for supporting an inner surface of the sheet (S) during flipping.

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