BACKGROUND
1. Technical Field
The present disclosure relates to media retrieval mechanisms, and more particularly to a media retrieval mechanism for a printer and a driving device used in the media retrieval mechanism.
2. Description of Related Art
In computing, following completion of a print job, remaining media may need to be retrieved from a media cartridge. However, a delivery arm of a typical printer may obstruct such retrieval.
BRIEF DESCRIPTION OF THE DRAWINGS
Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
FIG. 1 is an exploded, isometric view of an embodiment of a media retrieval mechanism.
FIG. 2 is an enlarged view of a disclosed driving device of a media retrieval mechanism such as, for example, that of FIG. 1.
FIG. 3 is an assembled view of a driving device, pivot shaft and media delivery device of the media retrieval mechanism of FIG. 1.
FIG. 4 is an assembled view of the media retrieval mechanism of FIG. 1.
FIG. 5 is a schematic view of the media retrieval mechanism of FIG. 1 showing the media delivery device in a holding state.
FIG. 6 is similar to FIG. 5, but shows the media delivery device tilted.
DETAILED DESCRIPTION
The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
Referring to FIG. 1, an embodiment of a media retrieval mechanism includes a chassis 10, a pivot shaft 30, a media delivery device 50 and a driving device 70.
The pivot shaft 30 includes a driving shaft 34 and a media delivery shaft 32. The driving shaft 34 can rotate relative to the media delivery shaft 32. The driving shaft 34 has a cross-shaped cross section.
The media delivery device 50 retrieves media from a media cartridge (not shown). The media delivery device 50 includes a cover 52, a roller 54 and a gear assembly 56. The cover 52 includes a pivot portion 524 and a contact portion 522. The pivot portion 524 is around the media delivery shaft 32. The roller 54 is mounted to the contact portion 522. An L-shaped rotating arm 5242 is located on the cover 52 away from the contact portion 522. The media may be printing paper.
FIG. 2 is an enlarged view of a driving device 70 of a media retrieval mechanism such as, for example, that of FIG. 1, the driving device 70 including a sleeve 72 and a driving member 74. The sleeve 72 is engaged with and movable by the driving shaft 34. The sleeve 72 includes a circular mounting portion 722 and a circular extending portion 724. A diameter of the extending portion 724 exceeds that of the mounting portion 722. A flange 7222 protrudes from the mounting portion 722 away from the extending portion 724. The driving member 74 includes a body 742 and an L-shaped driving arm 744. A plurality of resilient contact legs 7422 is located on the body 742 extending towards the extending portion 724. A plurality of supporting feet 7424 protrudes from the body 742 towards the mounting portion 722. Each of the plurality of the supporting feet 7424 has a cuneiform end portion.
Referring to FIG. 3, during assembly of the media retrieval mechanism, the driving member 74 is mounted to the sleeve 72. The contact legs 7422 abut the extending portion 724 and lateral sides of the supporting feet 7424 abut the flange 7222 so that the body 742 is held on the sleeve 72. The driving device 70 is mounted to driving shaft 34 and the media delivery device 50 is mounted to the media delivery shaft 32.
Referring to FIG. 4, the media retrieval mechanism is fixed to the chassis 10 and the pivot shaft 30 may rotate relative to the chassis 10. An end of the driving shaft 34 may be connected to a driving motor (not shown).
Referring to FIG. 5, during use, a plurality of media 100 is held by the contact portion 522 of the media delivery device 50 and the media delivery device 50 is placed in a holding state. The driving shaft 34 is rotated by the driving motor and the driving device 70 rotates accordingly. Further referring to FIG. 6, the driving arm 744 contacts the rotating arm 5242 and tilts the media delivery device 50. The contact portion 522 is elevated and moves away from the media 100, which can be freely retrieved from the chassis 10. When the driving device 70 is released, the contact portion 522 may return to the holding state.
It is also to be understood, however, that even though numerous characteristics and advantages have been set forth in the foregoing description of the embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Patent Application
20110227278
