Transfer of a media sheet within an image forming device
View Patent ↗Devices and methods for directing a media sheet along a media path within an image forming apparatus. The media path includes rollers that form a media nip, one or more deflectors, and a transport belt. The media nip conveys the media sheet along the media path into one or more deflectors. The one or more deflectors are positioned between the nip and the transport belt. The one or more deflectors control the angle of the media sheet as it approaches the transport belt and facilitates attachment of the media sheet to the transport belt. The transport belt then moves the media sheet past one or more image forming units and receives a toner image.
1. A device to direct a media sheet within an image forming apparatus comprising:
a transport belt passing through an image transfer section, the transport belt defining a plane;
a nip positioned upstream from the transport belt along a media path and positioned on the plane, the nip is formed by first and second rolls with the first roll angularly offset from the second roll to direct the media sheet out of the plane; and
a deflector positioned along the media path between the nip and the image transfer section, the deflector positioned out of the plane;
the nip driving the media sheet away from the plane to contact the deflector which then directs the media sheet back towards the plane to contact the belt at a point upstream from the image transfer section.
2. The device of claim 1 , wherein the nip is immediately adjacent to the deflector.
3. The device of claim 2 , wherein the deflector is immediately adjacent to the transport belt.
4. The device of claim 1 , further comprising a second deflector positioned on an opposite side of the plane from the deflector, the second deflector being positioned between the nip and the transport belt.
5. The device of claim 1 , wherein the plane is vertically aligned within the image forming apparatus.
6. The device of claim 1 , wherein a contact point of the deflector is positioned between an end of the belt and the image transfer section.
7. The device of claim 1 , wherein a line drawn through a center of rollers that form the nip is substantially perpendicular to the plane.
8. A device to direct a media sheet within an image forming apparatus comprising:
a transport belt having a first end and a second end, the transport belt having a vertical orientation;
an image transfer section positioned along the belt and between the first and second ends;
a nip upstream from the image transfer section and positioned vertically below the first end of the transport belt; and
a deflector positioned downstream from the nip to direct the media sheet toward the belt at a point upstream from the image transfer section.
9. The device of claim 8 , wherein the image transfer section comprises a transfer nip formed between a photoconductive member and a transfer roll, the transfer nip being distanced away from the first end of the transport belt.
10. The device of claim 8 , wherein the nip is generally within a plane defined by the transport belt.
11. The device of claim 8 , further comprising a fuser positioned vertically above the second end of the transport belt.
12. The device of claim 8 , further comprising an input section positioned vertically below the nip and an output section vertically above the second end of the transport belt.
13. The device of claim 8 , further comprising a second deflector, the second deflector positioned between the nip and the deflector to contact the media sheet as it moves out of the nip and direct the media sheet towards the deflector.
14. A method of directing a media sheet within an image forming apparatus, the method comprising the steps of:
vertically driving the media sheet upward through a nip in a direction that is out of alignment with a transport belt;
deflecting the media sheet that has passed through the nip in a direction towards the transport belt;
attaching the media sheet to the belt; and
vertically moving the media sheet on the belt through at least one image forming section and forming a toner image on the media sheet.
15. The method of claim 14 , further comprising forming an arc in the media sheet after it passes through the nip.
16. The method of claim 14 , further comprising deflecting the media sheet a second time after passing through the nip and before contacting the transport belt.
17. The method of claim 14 , further comprising electrostatically tacking the media sheet to the belt prior to moving the media sheet through the at least one image forming section.
18. The method of claim 14 , further comprising moving the media sheet with the toner image vertically through a fuser and adhering the toner image to the media sheet.
19. The method of claim 18 , further comprising inputting the media sheet from an input positioned vertically below the nip.