Not applicable.
This disclosure relates to printers and, more particularly, to assemblies having parts movable to provide access to internal printer components for service or the like.
Conventional printers often have many components packed into a small space so as to reduce the total size and profile of the printer. For example, printers may include a print area including a print head and platen through which media is fed in order to print on the media. In some cases, such as when the media is provided in continuous form and needs to be periodically cut, there may also be a cutting assembly positioned after the print area so as to separate the portion of the media that is printed on from the rest of the continuous piece of uncut media. These components, along with other supporting structural components and transport components, are typically packed tightly together in an internal volume of the printer.
One problem with such conventional printers is that, given their compact construction and the proximity of the internal components to one another, it can be difficult to access the components for service. As one example, if the media jams in the printer, it can be difficult for the end user to fit their hands into the innards of the assembly to clear the jam. Likewise, replacement of parts, such as ink cartridges, cutting blades, and so forth, may require the user to open the printer and attempt to navigate the cramped interior of the printer device with an at least partially obstructed view.
An assembly is disclosed for an ejection area of the printer, in which parts of the ejection chute assembly are movable in such a manner as to provide improved access to the internal components of the printer that are disposed along the media path such as, for example, the cutter assembly and ejection roller for cleaning. This improved access further facilitates the ability of a user to clear a media jam or otherwise service the printer.
The movement of the parts of the chute assembly can also cause at least one of the parts of the chute to shift in such a way as to cover or at least partially block a blade, such as a fixed blade, in a nearby cutting assembly. This can help to prevent inadvertent user contact with one or more of the blades of the cutting assembly during servicing.
Additionally, the various parts of the chute assembly can be linked or coupled in such a way that they move together when the chute assembly is actuated. In one arrangement, a portion of the housing of the printer can be constructed so as to interact with one or more of the chute parts to cause the chute part (along with other coupled chute parts) to move back into place when the door is closed. When the chute parts move together this can mean that, by closing the portion of the housing that provides access to the internal components of the printer, the chute parts can be automatically moved back into position to accommodate printing (i.e., a print position). This avoids the situation in which a user forgets to move one or more components in the chute assembly back into place, thereby creating a new jam when the printer is subsequently operated.
According to one aspect, a printer is disclosed having a media path extending through the printer. The printer includes a frame and a chute assembly. The chute assembly is received within the frame and is pivotable relative to the frame. The chute assembly includes a lower chute part and an upper chute part. The lower chute part is pivotable about a first axis that is fixed relative to the frame. The upper chute part is pivotally coupled to the lower chute part about a second axis that is fixed relative to the lower chute part. The lower chute part and the upper chute part are coupled to one another such that, when the upper chute part pivots about the second axis relative to the lower chute part, the lower chute part automatically pivots about the first axis.
Accordingly, the chute assembly is movable between two positions. The chute assembly can have a print position or closed position in which the media path extends through the chute assembly. This may be the position utilized during typical operation of the printer in which the media that is printed upon and cut extends through a space between the upper and lower chute parts of the chute assembly for ejection. The chute assembly may also have a service position or an open position in which the upper chute part is lifted to provide access to some of the internal components, such as an adjacent cutting or printing assembly portions, for service or maintenance.
In one form of the printer, the printer may include a support fixed relative to the frame, a portion of the chute assembly may be coupled to a slider in which a surface of the slider slidingly engages the support on the frame, and a portion of the chute assembly may be coupled to a cam for actuating the slider. In one embodiment, the slider can be movably coupled to the lower chute part such that the movement of the slider relative to the lower chute part results in a pivoting of the lower chute part about the first axis as the surface of the slider slidingly engages the support. According to one exemplary form, the cam may be fixed with respect to the upper chute part, such that pivoting the upper chute part relative to the lower chute part causes the cam to engage and actuate the slider. This engagement can cause the slider to move relative to the lower chute part which thereby effectuates the pivoting of the lower chute part relative to the first axis as the surface of the slider engages the support.
To reasonably ensure contact between the slider and the support, the lower chute part can be rotationally biased about the first axis so as to urge the surface of the slider into sliding engagement with the support.
In one particular embodiment, the slider may be movably coupled to the lower chute part along a sliding guide rail. In this arrangement, the cam can translate the rotational movement of the upper chute part about the second axis to a linear motion of the slider relative to the lower chute part. In order to transfer the motion of the cam to the slider, the slider may have a boss that engages a guide profile or a cutout of the cam to effectuate a linear motion of the slider. The surface of the slider that slidingly engages the support may include an angled portion (that is angled with respect to the direction of linear motion of the slider) and a flat portion (that lies on the plane parallel with the direction of linear motion of the slider). The angled portion may be used as a ramp that lifts or rotates the lower chute part when the slider is actuated by the cam. When the flat portion is contacted against the support, the flat portion can be so disposed as to maintain a rotational position of the lower chute part with respect to the frame.
So as to create the double-pivoting action of the chute assembly, the first axis and the second axis can be parallel with one another and can also be spaced apart from one another.
The printer may have a cutting assembly adjacent the chute assembly. Although various types of cutting assemblies might be used, in one form, the cutting assembly may include a fixed blade and a moving blade. In view of the structure described herein, when the lower chute part is pivoted upward, the lower chute part can obstruct access to at least a portion of the cutting assembly (such as, for example, a fixed blade).
The lower chute part may be biased in a first rotational direction about the first axis to place or urge the chute assembly in a print position under certain conditions For example, when the angularly inclined portion of the slider contacts the support, the biasing force may urge the slider to shift back towards its position in the print position.
When viewed from one of the ends of the chute assembly, the lower chute part may be biased in a first rotational direction about the first axis to urge the chute assembly in a print position. When the chute assembly is actuated to a service position by pivoting of the upper chute part, a direction of rotation of the upper chute part about the second axis and of the lower chute part about the first axis may occur in a second rotational direction. This second rotational direction of motion during opening can be opposite to the first rotational direction of biasing of the lower chute part.
In some forms, the upper chute part may be connected to the lower chute part using at least one pin arranged along the second axis. However, other forms of hinged or pivotal connection are contemplated and, in some forms, the upper chute part and the lower chute part may bear directly on one another.
The printer may further comprise a housing including a door that provides access to internal components of the printer including the chute assembly. The door and at least one of the upper chute part and the lower chute part can have profiled surfaces for engagement with one another. These profiled surfaces are arranged such that, if the chute assembly is in a service position (i.e., open position) and the door of the housing is closed, an engagement of the profiled surfaces of the door and the chute part(s) will cause the upper chute part and the lower chute part to be rotated so as to place the chute assembly back into the print or closed position.
These and still other advantages of the invention will be apparent from the detailed description and drawings. What follows is merely a description of a preferred embodiment of the present invention. To assess the full scope of the invention, the claims should be looked to as the preferred embodiment is not intended to be the only embodiment within the scope of the claims.
Referring first to
On a left side 22 of the printer 10, there is an ejection chute 24 through which printed and cut media may be ejected. During use, a continuous length of media in the printer 10 first passes though a printer area in which an image or the like (e.g., a barcode, label, text, or other information) is printed on the media. The media that has been printed upon is then fed through a cutting area or cutting assembly 40, shown in
Referring now specifically to
In the form shown, the door 28 is hinged near a bottom edge of the printer 10 such that the door 28 folds down to provide access to the interior of the printer 10. However, the movement of the door 28 relative to the remainder of the housing 30 should not be so limited. For example, the door 28 might be hinged about a side of the printer 10. As still another example, the door 28 might be removable from the printer 10 altogether using a slide-and-lock type arrangement or a clip arrangement.
As can be seen in
Turning now to
As illustrated, the frame 44 includes a bottom platform 46 to which two upright walls are attached including a rear side wall 48 and a front side wall 50. In
Now with additional reference to
A pair of opposed pivots 58 are attached to the outside of the rear side wall 48 and the front side wall 50 to support the lower chute part 54. These pivots 58 also define a first axis of rotation A-A that is fixed relative to the frame 44 and about which the lower chute part 54 of the chute assembly 32 can pivot.
A detailed view of one of the pivots 58 is shown in greater detail in
It will be appreciated that this is but one form that a supporting pivot could take and that other forms are contemplated. For example, the supporting pivot could be attached to the inside of the walls of the frame or be integral with the frame. As still another example, the bearing surfaces on the pivots could be radially inward facing surfaces instead of radially outward facing surfaces. Likewise, a pivot need not directly bear on the lower chute part; there may be a bushing, intermediate bearing, or other structure that establishes the first axis A-A of rotation for the lower chute part relative to the frame.
Returning now to
As shown in
This ramped profile 88 of the slider 76 can engage or be driven against a support 96 that is fixed relative to the frame 44 so as to cause the lower chute part 54 to rotate about axis A-A. In the form shown, the support 96 is affixed to the rear side wall 48. Although only a single support is illustrated on one end of the chute assembly 32, there may be a second support, slider, and cam found on the other end of the chute assembly 32.
The slider 76 can be actuated using a cam 98 that is affixed to the upper chute part 56. The cam 98 is fixed with respect to the upper chute part 56 using fasteners 100, such that a movement or pivoting of the upper chute part 56 relative to the lower chute part 54 about a second axis of rotation B-B (which axis may be established using connecting pins 102 between the upper chute part 56 and the lower chute part 54) causes a shaped arcuate cutout or guide profile 104 of the cam 98 to engage the boss 82 of the slider 76. This engagement causes the slider 76 to move relative to the lower chute part 54 and to effectuate the pivoting of the lower chute part 54 relative to the first axis A-A. Thus, the cam 98 translates the rotational movement of the upper chute part 56 about the second axis B-B into a linear motion of the slider 76 which, at least in the form illustrated, is restricted to linear motion by the sliding guide rail 78.
Before proceeding to describe the overall operation of the chute assembly 32, a few other items of the printer 10 should be described.
In order to rotationally or pivotally bias the lower chute part 54 of the chute assembly 32 to a print position, there may be a biasing element, such as springs 106, which cause the rotation of the lower chute part 54 in a counter-clockwise direction when viewed from a rear side of the printer 10. As shown, the springs 106 are disposed on the right side of axis A-A when the printer 10 is viewed from the rear (which is the same as the left side when the printer 10 is viewed from the front). The springs 106 are seated in a bore 108 in the underside of the lower chute part 54 and contact against the lower part of the frame 44. This arrangement of the springs 106 in the lower chute part 54 results in the slider 76, which is on the other side of axis A-A, being urged into contact or engagement with the support 96 on the frame 44.
It is observed that the spring 106 might be threaded into the bore 108 and held in place by having a projection or tab 109 that extends from the side wall of the bore 108. This tab 109 may extend into a space between portions of the coil of the spring 106, so as to generally inhibit removal of the spring 106 from the bore 108 without counter-rotation of the spring 106 to unthread the spring 106 from the tab 109.
The printer 10 also includes one or more ejection rollers 110, although these ejection rollers 110 are not shown in great detail. See, for example,
Turning now to the operation of the printer 10, and more particularly to the opening and closing of the chute assembly 32,
In
In the print position (and as viewed from the rear side) of
Additionally, with the boss 82 of the slider 76 in its rightmost position, the guide profile 104 of the cam 98 results in the upper chute part 56 being positionally pivoted about axis B-B to its most counter-clockwise position (as view from the rear side).
Notably, in this print position, media fed through and cut by the cutter assembly 40 is directed or fed between the upper chute part 56 and the lower chute part 54. In particular, in
Turning now to
When the upper chute part 56 is lifted, this causes the movement and rotation of the attached cam 98 with the upper chute part 56. As this action occurs, the arcuate guide profile 104 of the cam 98 engages the boss 82 of the slider 76 so as to cause the slider 76 to be moved leftward to an extended position. This results in the ramped profile 88 of the slider 76 being moved over a portion of the support 96. In particular, this leftward movement causes the sequential engagement of the support 96 with the flat portion 92, the angularly inclined portion 90, and the flat portion 94 of the ramped profile 88. Over the span of the angularly inclined portion 90, the lower chute part 54 is caused to pivot clockwise about the axis A-A as the slider 76 ramps up or is driven over the support 96. When the flat portion 94 rests against the support 96, the lower chute part 54 can remain in raised or position, even against the biasing force of the spring 106. If for some reason the rotation of the upper chute part 56 is stopped prior to fully ramping the slider 76 on the support 96 up to the flat portion 94, then the biasing force of the spring 106 may result in the slider 76 being forced leftward back into the retracted position.
Accordingly, the lifting of the upper chute part 56 causes both the rotation or pivoting of the upper chute part 56 about axis B-B and the rotation or pivoting of the lower chute part 54 about axis A-A, both axes being parallel with one another and being spaced apart from one another. Because axis A-A is fixed relative to the frame 44 and axis B-B is defined at a point of connection between the upper chute part 56 and the lower chute part 54, this also means that axis B-B rotates or pivots with respect to axis A-A. From the rear side view, this rotation of axis B-B relative to axis A-A occurs in a clockwise direction when the chute assembly 32 is moved from a closed to an open position.
Notably, a comparison of
Accordingly, the tilting of these components results in better exposure to the adjacent area of the print path P and other internal components. Because both parts 54 and 56 generally pivot away from the cutter assembly 40 and printer assembly, it creates more room for servicing the printer and clearing jams.
Additionally, a comparison of
Finally, with reference to
Accordingly, a printer is disclosed having an improved chute assembly. This new arrangement permits a user to open an area of the chute assembly for service, for example, to clear a paper jam or for cleaning, which simultaneously creates an automatic guard around portions of a cutting assembly. Moreover, if a user forgets to close the chute assembly after service, the closing of a door of the printer can be made to automatically return the chute assembly to its print or closed position.
Many modifications and variations to this preferred embodiment will be apparent to those skilled in the art, which will be within the spirit and scope of the invention. Therefore, the invention should not be limited to the described embodiment. To ascertain the full scope of the invention, the following claims should be referenced.
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Entry |
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PCT International Search Report and Written Opinion for PCT/US2013/056798, corresponding to instant application, 8 pages, mailed Nov. 15, 2013. |
Number | Date | Country | |
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20140060275 A1 | Mar 2014 | US |