Image scanning apparatus and image forming apparatus with repositioning auxiliary medium guide for mixed document widths
An image scanning apparatus which reduces misalignment of documents includes a scanning unit configured to scan images from a first document and a second document having a width that is smaller than a width of the first document, and a document transfer unit configured to automatically feed the first document and the second document. The document transfer unit includes a frame including a feed tray on which the first document and the second document are stacked, a pickup module mounted on the frame, and configured to pick up the first document and the second document and to transfer the first document and the second document, and an auxiliary guide installed in the frame, and configured to change a position according to a height of the first document stacked on the feed tray and to support one side in width direction of the second document.
1. An image scanning apparatus, comprising:
a scanning unit configured to scan a first document and a second document, the second document having a width that is smaller than a width of the first document; and
a document transfer unit configured to automatically feed the first document and the second document,
wherein the document transfer unit comprises:
a frame including a feed tray on which the first document and the second document are to be stacked;
a pickup module installed on the frame, and configured to pick up the first document and the second document from the feed tray; and
an auxiliary guide configured to change a position according to a height of the first document stacked on the feed tray and to support one side of the second document in a width direction of the second document.
2. The image scanning apparatus according to claim 1 , wherein
the frame further comprises a pickup module housing configured to protect the pickup module, and
the auxiliary guide is installed on the pickup module housing provided to the frame and is positioned in front of the pickup module.
3. The image scanning apparatus according to claim 1 , wherein
the document transfer unit further comprises a rail member extending in a width direction of the feed tray, and
the auxiliary guide is movably installed on the rail member.
4. The image scanning apparatus according to claim 3 , wherein the rail member comprises at least one fixing member configured to fix the auxiliary guide at a position corresponding to the width of the second document.
5. The image scanning apparatus according to claim 1 , wherein the document transfer unit further comprises an auxiliary guide transfer apparatus configured to automatically transfer the auxiliary guide to a position corresponding to the one side of the second document.
6. The image scanning apparatus according to claim 1 , wherein the auxiliary guide comprises:
a support member supported on the frame,
a guide arm configured to support the one side of the second document, and
a rotating shaft configured to connect the support member to the guide arm and to change a rotation angle of the guide arm according to the height of the first document.
7. The image scanning apparatus according to claim 1 , wherein at least one surface of the auxiliary guide has a round shape to prevent the second document from being jammed.
8. The image scanning apparatus according to claim 1 , wherein
the document transfer unit further comprises an additional auxiliary guide installed on the frame and is positioned in front of the pickup module, and
the additional auxiliary guide is configured to support one side of a third document in a width direction of the third document, the third document having a width that is smaller than the width of the second document.
9. The image scanning apparatus according to claim 1 , wherein the auxiliary guide changes a rotation angle to place the auxiliary guide on an upper surface of the first document.
10. An image forming apparatus, comprising:
an image scanning apparatus comprising:
a scanning unit configured to scan a first document and a second document, the second document having a width that is smaller than a width of the first document; and
a document transfer unit configured to automatically feed the first document and the second document,
wherein the document transfer unit comprises:
a frame including a feed tray on which the first document and the second document are to be stacked;
a pickup module installed on the frame, and configured to pick up the first document and the second document from the feed tray; and
an auxiliary guide configured to change a position according to a height of the first document stacked on the feed tray, and to support one side of the second document in a width direction of the second document; and
an image forming unit configured to form the scanned first document and the scanned second document on one or more print mediums.
11. An image scanning apparatus, comprising:
a scanning unit configured to scan a first document and a second document, the second document having a width that is smaller than a width of the first document; and
a document transfer unit configured to automatically feed the first document and the second document,
wherein the document transfer unit comprises:
a frame including a feed tray on which the first document and the second document are to be stacked;
a cover unit rotatably coupled with the frame, and configured to be opened or closed;
a pickup module installed on the cover unit, and configured to pick up the first document and the second document from the feed tray; and
an auxiliary guide configured to change a position according to a height of the first document stacked on the feed tray, and to support one side of the second document in a width direction of the second document.
12. The image scanning apparatus according to claim 11 , wherein
the cover unit further comprises a rail member provided at a lower part of the cover unit, and
the auxiliary guide is movably installed on the rail member to move along the rail member in a width direction of the feed tray.
13. The image scanning apparatus according to claim 12 , wherein the rail member comprises at least one fixing member configured to fix the auxiliary guide at a position corresponding to the width of the second document.
14. The image scanning apparatus according to claim 11 , wherein the document transfer unit further comprises an auxiliary guide transfer apparatus configured to automatically transfer the auxiliary guide to a position corresponding to the one side of the second document.
15. The image scanning apparatus according to claim 11 , wherein the auxiliary guide comprises:
a support member supported on the cover unit,
a guide arm configured to support the one side of the second document, and
a rotating shaft configured to connect the support member to the guide arm and to change a rotation angle of the guide arm according to the height of the first document.
16. The image scanning apparatus according to claim 11 , wherein at least one surface of the auxiliary guide has a round shape to prevent the second document from being jammed.
17. The image scanning apparatus according to claim 11 , wherein
the document transfer unit further comprises an additional auxiliary guide installed on the cover unit and is positioned in front of the pickup module, and
the additional auxiliary guide is configured to support one side of a third document in a width direction of the third document, the third document having a width that is smaller than the width of the second document.
18. The image scanning apparatus according to claim 11 , wherein the auxiliary guide changes a rotation angle to place the auxiliary guide on an upper surface of the first document.
19. The image scanning apparatus according to claim 12 , wherein the cover unit further comprises a rail cover member configured to maintain the auxiliary guide on the rail member when the cover unit is opened.
20. An image forming apparatus, comprising:
an image scanning apparatus comprising:
a scanning unit configured to scan a first document and a second document, the second document having a width that is smaller than a width of the first document; and
a document transfer unit configured to automatically feed the first document and the second document,
wherein the document transfer unit comprises:
a frame including a feed tray on which the first document and the second document are to be stacked;
a cover unit rotatably coupled with the frame, and configured to be opened or closed;
a pickup module installed on the cover unit, and configured to pick up the first document and the second document from the feed tray; and
an auxiliary guide configured to change a position according to the height of the first document stacked on the feed tray, and to support one side of the second document in a width direction of the second document; and
an image forming unit configured to form the scanned first document and the scanned second document on one or more print mediums.
21. An image scanning apparatus, comprising:
a frame including a feed tray on which a first document and a second document are to be stacked, the second document having a width that is smaller than a width of the first document;
a cover unit rotatably coupled with the frame;
a pickup module configured to pick up the first document and the second document from the feed tray;
a scanning unit configured to scan the first document after the first document is transferred to the scanning unit from the pickup module, and to scan the second document after the second document is transferred to the scanning unit from the pickup module; and
at least one auxiliary guide configured to prevent a skew of the second document during the transfer of the second document from the pickup module to the scanning unit, and configured to change a position according to a height of the first document stacked on the feed tray, and the at least one auxiliary guide having a guide arm to support one side of the second document in a width direction of the second document.
22. The image scanning apparatus according to claim 21 , further comprising a rail member installed on one of the frame and the cover unit,
wherein the at least one auxiliary guide is installed on the one of the frame and the cover unit and is movable along the rail member.
23. The image scanning apparatus according to claim 21 , wherein a plurality of auxiliary guides which include the at least one auxiliary guide are arranged in a width direction of the feed tray.
24. The image scanning apparatus according to claim 21 , further comprising an auxiliary guide transfer apparatus configured to automatically move the at least one auxiliary guide in a width direction of the feed tray.
25. The image scanning apparatus according to claim 21 , wherein the guide arm is placed on an upper surface of the first document stacked on the feed tray, and rotates according to the height of the first document.
26. The image scanning apparatus according to claim 21 , wherein the pickup module is installed on one of the frame and the cover unit and the at least one auxiliary guide is installed on the one of the frame and the cover unit.
27. The image scanning apparatus according to claim 22 , further comprising an auxiliary guide transfer apparatus coupled to the rail member, and configured to automatically move the at least one auxiliary guide to a position corresponding to the one side of the second document.
28. The image scanning apparatus according to claim 27 , wherein the auxiliary guide transfer apparatus comprises:
at least one sensor member disposed on the rail member, and configured to determine whether the at least one auxiliary guide is located at a position corresponding to the at least one sensor member,
at least one clip member connected to the at least one auxiliary guide,
a transfer member configured to transfer the clip member for moving the at least one auxiliary guide in the width direction of the second document, and
a driving member configured to move the transfer member according to the width of the second document.
29. An image scanning apparatus, comprising:
a feed tray configured to hold a first document having a first width and a second document having a second width which is less than the first width;
a pickup module configured to pick up the first document and the second document from the feed tray;
a scanning unit provided downstream of the pickup module along a scanning path of the first document and second document, and configured to scan the first document and the second document;
a movement guide configured to support both sides of the first document in a width direction of the first document, and configured to support one side of the second document in a width direction of the second document; and
an auxiliary guide provided upstream of the pickup module along the scanning path, and configured to support another side of the second document in a width direction of the second document.
30. The image scanning apparatus according to claim 29 , further comprising a rail member which extends in the width direction of the second document,
wherein
the auxiliary guide is installed on the rail member to be moveable along the rail member so that the auxiliary guide is provided at a position corresponding to the another side of the second document, and
the auxiliary guide comprises:
a support member connected to the rail member,
a guide arm configured to support a side surface of the another side of the second document, and
a rotating shaft configured to connect the support member to the guide arm and to change a rotation angle of the guide arm according to a height of the first document so that an end of the guide arm contacts an upper surface of the first document held in the feed tray.