# Patent

## Title
Leader devices usable with roll media and image forming system having output member

## Abstract

Leader devices usable with roll media and an image forming system having an output member are disclosed. A leader device may include a leader member having a first end and a second end. The first end may attach to the output member of the image forming system. The leader device may also include an attachment means disposed on the second end of the image forming system for removably attaching the leader member to a leading edge of the roll media.

## Background
BACKGROUND
Image forming systems such as large format printing systems may apply fluid to media. Such large format printing systems may be supplied with media in the form of roll media. The roll media may be transported along a media transport path through a print zone to selectively receive fluid and, subsequently, to an output member.



BRIEF DESCRIPTION OF THE DRAWINGS
Non-limiting examples of the present disclosure are described in the following description, read with reference to the figures attached hereto and do not limit the scope of the claims. In the figures, identical and similar structures, elements or parts thereof that appear in more than one figure are generally labeled with the same or similar references in the figures in which they appear. Dimensions of components and features illustrated in the figures are chosen primarily for convenience and clarity of presentation and are not necessarily to scale. Referring to the attached figures:
FIG. 1 is a block diagram illustrating a leader device according to an example.
FIG. 2 is a schematic cross-sectional view illustrating the leader device attached to roll media of an image forming system according to an example.
FIGS. 3A-3D are perspective views of the leader device FIG. 1 according to examples.
FIGS. 3E and 3F are cross-sectional views of the leader device of FIG. 3D according to examples.
FIG. 4 is a block diagram illustrating a leader device according to an example.
FIG. 5A is perspective view of the leader device of FIG. 4 according to an example.
FIGS. 5B and 5C are cross-sectional views of the leader device of FIG. 5A according to examples.
FIG. 6 is a block diagram illustrating a leader device according to an example.



DETAILED DESCRIPTION
In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which is detected by way of illustration specific examples in which the present disclosure may be practiced. It is to be understood that other examples may be utilized and structural or logical changes may be made without departing from the scope of the present disclosure. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present disclosure is defined by the appended claims.
Image forming systems include large format printers that use roll media to span across a print zone to receive fluid including ink such as latex-based ink, or the like, thereon from a fluid applicator unit. That is, the roll media may be loaded across the print zone to an output member such as an output roller. The roll media may be transported in a media transport direction from the roll media to the output roller. For example, the roll media may be transported through the print zone and wound around the roller member. The image forming system may include a plurality of rollers and a platen to support, guide and/or transport the roll media. Proper and constant tension may be applied to the roll media spanning across the print zone to maintain the respective media relatively flat to reduce media transport failure, image forming system failure and/or printing defects. Roll media, for example, may correspond to media such as paper, plastic, vinyl, and other materials, being supplied in a form of a roll to receive fluid from a fluid applicator unit. An amount of the roll media that is upstream of the print zone when the roll media is initially loaded may be wasted. That is, the initial amount of roll media upstream from the print zone is positioned past the print zone and, thus, may not receive fluid from the print applicator unit. Such roll media may be expensive and, thus, the wasted media may be costly.
In examples, a leader device usable with roll media and an image forming system having an output member may include a leader device including a leader member and an attachment means for removably attaching the leader member to a leading edge of the roll media. For example, the leader device may be a media loading accessory which can be reusable and/or disposable. The cost of the leader device may be significantly less than the cost of wasted material for which it prevents. Alternatively, the leader device may be part of the output member. The leader member may include a first end and a second end. The first end may attach to the output member of the image forming system. The attachment means may be disposed on the second end of the image forming system. The attachment means may removably attach the leader member to a leading edge of the roll media. Additionally, upon initial loading of the roll media, the leader device may be positioned upstream from the print zone in lieu of an amount of roll media that would of otherwise have been wasted. Thus, the initial amount of roll media upstream from the print zone may be reduced. Accordingly, the cost corresponding to wasted material during the initial loading of roll media may be reduced.
FIG. 1 is a block diagram illustrating a leader device according to an example. FIG. 2 is a schematic cross-sectional view illustrating the leader device attached to a roll media of an image forming system according to an example. A leader device 100 may be usable with roll media 25 and an image forming system 210 having an output member 26. Referring to FIGS. 1 and 2, in some examples, the leader device 100 may include a leader member 10 and an attachment means 11. The leader member 10 may include a first end 10a and a second end 10b. The first end 10a of the leader member 10 may attach to the output member 26 of the image forming system 210. The output member 26, for example, may have a slot, clamp, or the like, to receive the first end 10a of the leader member 10. The output member 26 may be an output roller, or the like. The output roller may be a replaceable roller.
Referring to FIGS. 1 and 2, in some examples, the attachment means 11 may be disposed on the second end 10b of the image forming system 210 for removably attaching the leader member 10 to a leading edge 25c (FIG. 3F) of the roll media 25. In some examples, the leader device 100 may be positioned upstream U of the print zone 28 and span the roll media 25 across a print zone 28. Additionally, proper tension is applied to the leader device 100 and the roll media 25. The print zone 28 may be disposed across from a fluid applicator unit 29 such as a printhead, or the like, to receive the roll media 25 and selectively receive fluid there from. The roll media 25 may be transported in a media transport direction dt. That is, the media transport direction dt may correspond to a direction in which the roll media 25 is transported to and from the print zone 28. In some examples, the image forming system 210 may also include a plurality of rollers 24a to guide and/or transport the roll media 25 onto the output member 26 and a platen 24b to support the roll media 25 in the print zone 28. In some examples, in the installed state, the leader device 100 is disposed upstream U from the print zone 28.
FIGS. 3A-3C are perspective views of the leader device of FIG. 1 according to examples. Referring to FIG. 3A, in some examples, the leader device 100 may include a leader member 10 and an attachment means 11 such as glue 31a coupled to the leader member 10. The glue 31a, for example, may have a range of adhesiveness to removably attach the leader member 10 to the roll media 25. That is, the leader device 100 may be sufficiently attached to the roll media 25 and maintain the proper and constant tension. Yet, the attachment means 11 such as glue may be removed from the roll media 25, for example, upon completion of printing on the respective roll media 25 or when otherwise necessary. Referring to FIG. 3B, in some examples, the leader device 100 may include a leader member 10 and an attachment means 11 such as tape 10b coupled to the leader member 10. For example, the tape 31b may be a double-sided tape. The tape 31b, for example, may have a range of adhesiveness to removably attach the leader member 10 to the roll media 25. The tape 11b may be a doubled-sided tape in which one side is attached to the leader member 10 and the other side may removably attach to the roll media 25. The tape 31b may have a removable tape cover (not illustrated) to cover the tape 31b in a cover state and expose the tape 31b to removably attach to the roll media 25 in an uncover state.
Referring to FIG. 3C, in some examples, the leader device 100 may include a leader member 10 and an attachment means 11 such as an adhesive 31c coupled to the leader member 10 and a removable adhesive cover 32c thereon. The adhesive 31c, for example, may have a range of adhesiveness to removably attach the leader member 10 to the roll media 25. The adhesive 31c is attached to the leader member 10 and may removably attach to the roll media 25. The removable adhesive cover 32c may cover the adhesive 31c in a cover state and expose the adhesive 31c to removably attach to the roll media 25 in an uncover state.
FIG. 3D is a perspective view of the leader device of FIG. 1 according to an example. FIGS. 3E and 3F are cross-sectional views of the leader device of FIG. 3D according to examples. Referring to FIGS. 3D-3F, in some examples, the leader device 100 may include a leader member 10 and an attachment means 11 such as a magnetic clip member 33 coupled to the leader member 10. The leader member 10 may also include a length l extending in a media transport direction dt and a width w perpendicular to the length l. In some examples, the leader member 10 may include plastic, or the like. The magnetic clip member 33 may extend across the width w of the leader member 10. Thus, the roll media 25 may be adequately received, orientated and gripped by the magnetic clip member 33.
Referring to FIGS. 3D-3F, in some examples, the magnetic clip member 33 may include an upper section 33a, a lower section 33b, and an intermediate section 33c. The upper section 33a may include an upper contact surface 33d to contact a side surface 25a of the roll media 25. The lower section 33b may include a lower contact surface 33e disposed across from the upper contact surface 33d to contact another side surface 33e of the roll media 25. In some examples, the lower contact surface 33e may include a lower gripping portion 34b and the upper contact surface 33d may include an upper gripping portion 34a In some examples, the upper and lower gripping portions 34a and 34b may include a rough surface, a pad, and/or protrusions, or the like.
Referring to FIGS. 3D-3F, in some examples, the intermediate section 33c may include an alignment surface 33f to align a leading edge 25c of the roll media 25, for example, to reduce skew. The alignment surface 33f may be a wall member to contact and extend in a width-wise direction of the leading edge 25c of the roll media 25 in response to the magnetic clip member 33 being placed in an installed state. That is, the installed state corresponds to the roll media 25 being received by the magnetic clip member 33. The magnetic clip member 33 may also include an exterior surface 36. In some examples, the exterior surface 36 may include a first rounded corner 36a and a second rounded corner 36b. The first rounded corner 36a may correspond to an intersection between the intermediate section 33c and the upper section 33a. The second rounded corner 36b may correspond to an intersection between the intermediate section 33c and the lower section 33b. The respective rounded corners 36a and 36b may reduce damage to the roll media 25, for example, as such corners 36a and 36b contact the roll media 25 when such media 25 is wound on the output member 26. A magnetic field fm may be established between and to attract the upper section 33a and the lower section 33b toward each other to grip the roll media 25.
FIG. 4 is a block diagram illustrating a leader device according to an example. A leader device 100 may be usable with roll media 25 and an image forming system 210 having an output member 26. Referring to FIG. 4, in some examples, the leader device 100 may include a leader member 10 and a clip member 43. The leader member 10 may include a first end 10a to attach to the output member 26 of the image forming system 210. In some examples, the leader member 10 may include plastic, or the like. The clip member 43 may be coupled to the leader member 10. The clip member 43 may removably attach the leader member 10 to the roll media 25 in an installed state. In some examples, the clip member 43 may include metal, or the like.
FIG. 5A is a perspective view of the leader device of FIG. 4 according to an example. FIGS. 5B and 5C are cross-sectional views of the leader device of FIG. 5A according to examples. Referring to FIGS. 5A-5C, in some examples, the leader device 10 may include a leader member 10 and a clip member 43 as previously disclosed with respect to FIG. 4. The leader member 10 may include a length l extending in a media transport direction dt and a width w perpendicular to the length l. The clip member 43 may also include an upper section 33a, a lower section 33b, and an intermediate section 33c disposed between the upper section 33a and the lower section 33b. The upper section 33a may include an upper contact surface 33d to contact a side surface 25a of the roll media 25 in an installed state. The lower section 33b may include a lower contact surface 33e disposed across from the upper contact surface 33d to contact another side surface 25b of the roll media 25 in the installed state.
Referring to FIGS. 5A-5C, in some examples, the intermediate section 33c may include an alignment surface 33f to align a leading edge 25c of the roll media 25, for example, to reduce skew in the installed state. The alignment surface 33f may be a wall member to selectively contact and extend in a width-wise direction of the leading edge 25c of the roll media 25 in response to the clip member 43 being placed in an installed state. That is, the installed state corresponds to the roll media 25 being received by the clip member 43. In some examples, the upper contact surface 33d of the upper section 33a may include an upper gripping portion 34a and the lower contact surface 33e of the lower section 33b may include a lower gripping portion 34b. For example, the upper and lower gripping portions 34a and 34b may include a rough surface, a pad, and/or protrusions, or the like.
Referring to FIGS. 5A-5C, in some examples, the dip member 43 may also include a magnetic unit 55 coupled to at least one of the upper section 33a, the lower section 33b and the intermediate section 33c. The magnetic unit 55 may establish a magnetic field fm between and to attract the upper section 33a and the lower section 33b toward each other to grip the roll media 25 in the installed state. For example, the upper section 33a may have a magnet disposed therein. Additionally, the lower section 33b may include and/or have a ferromagnetic member disposed thereon. The clip member 43 may be in a form of a magnetic clip member 33 (FIGS. 3D-3F) to establish a magnetic field fm between and to attract the upper section 33a and the lower section 33b toward each other to grip the roll media 25 in the installed state. For example, the magnetic clip member 33 itself may include ferromagnetic material, or the like.
Referring to FIGS. 5A-5C, in some examples, the clip member 43 may also include an exterior surface including a first rounded corner 36a and a second rounded corner 36b. The first rounded corner 36a may correspond to an intersection between the intermediate section 33c and the upper section 33a. The second rounded corner 36b may correspond to an intersection between the intermediate section 33c and the lower section 33b. The clip member 43 may extend across the width w of the leader member 10. Thus, the roll media 25 may be adequately received, orientated and gripped by the clip member 43. The upper section 33a, the lower section 33b and the intermediate section 33c of the clip member 33 may be formed of a single unitary and integral member. For example, the single unitary and integral member may be a piece of sheet metal.
FIG. 6 is a block diagram illustrating a leader device according to an example. A leader device 100 may be usable with roll media 25 and an image forming system 210 having an output member 26. Referring to FIG. 6, in some examples, the leader device 100 may include a leader member 10 and a magnetic clip member 33. The leader member 10 may include a length l, a width w and a first end 10a. The length l may extend in a media transport direction dt. The width w may be perpendicular to the length l such that the magnetic clip member 33 extends across the width w of the leader member 10. The first end 10a of the leader member 10 may attach to the output member 26 of the image forming system 210. The leader device 100 may also include a magnetic clip member 33 coupled to the leader member 10. The leader member 10 may include plastic, or the like.
Referring to FIG. 6, in some examples, the magnetic clip member 33 may include an upper section 33a, a lower section 33b, an intermediate section 33c, and an exterior surface 36. The upper section 33a may include an upper contact surface 33d to contact a side surface 25a of the roll media 25. The upper contact surface 33d may include an upper gripping portion 34a. The lower section 33b may include a lower contact surface 33e disposed across from the upper contact surface 33d to contact another side surface 25b of the roll media 25. The lower contact surface 33e may include a lower gripping portion 34b. In some examples, the upper and lower gripping portions 34a and 34b may include a rough surface, a pad, and/or protrusions, or the like. The intermediate section 33c may include an alignment surface 33f to align a leading edge 25c of the roll media 25, for example, to reduce skew. The alignment surface 33f may be a wall member to selectively contact and extend in a width-wise direction of the leading edge 25c of the roll media 25 in response to the magnetic clip member 33 being placed in an installed state. That is, the installed state corresponds to the roll media 25 being received by the magnetic clip member 33.
Referring to FIG. 6, in some examples, a magnetic field fm (FIG. 3F) may be established between the upper section 33a and the lower section 33b to attract the upper section 33a and lower section 33b toward each other to grip the roll media 25. For example, at least one of the upper and lower section 33a and 33b may move toward the other one of the upper and lower section 33a and 33b and contact a respective side 25a and 25b of the roll media 25 in the installed state. The exterior surface 36 may include a first rounded corner 36a and a second rounded corner 36b. The first rounded corner 36a may correspond to an intersection between the intermediate section 33c and the upper section 33a. The second rounded corner 36b may correspond to an intersection between the intermediate section 33c and the lower section 33b. The respective rounded corners 36a and 36b may reduce damage to the roll media 25, for example, as such corners 36a and 36b contact the roll media 25 when such media is wound on the output member 26. The magnetic clip member 33 may include metal such as sheet metal, or the like.
The present disclosure has been described using non-limiting detailed descriptions of examples thereof. Such examples are not intended to limit the scope of the present disclosure. It should be understood that features and/or operations described with respect to one example may be used with other examples and that not all examples of the present disclosure have all of the features and/or operations illustrated in a particular figure or described with respect to one of the examples. Variations of examples described will occur to persons of the art. Furthermore, the terms “comprise,” “include,” “have” and their conjugates, shall mean, when used in the present disclosure and/or claims, “including but not necessarily limited to.”
It is noted that some of the above described examples may describe examples contemplated by the inventors and therefore may include structure, acts or details of structures and acts that may not be essential to the present disclosure and which are described as examples. Structure and acts described herein are replaceable by equivalents, which perform the same function, even if the structure or acts are different, as known in the art. Therefore, the scope of the present disclosure is limited only by the elements and limitations as used in the claims.

## Claims

1. A leader device usable with roll media and an image forming system having an output member, the leader device comprising:
a leader member having a first end to attach to the output member of the image forming system; and
a clip member couple to the leader member, the clip member to removably attach the leader member to the roll media in an installed state, the clip member comprising:
a first section having a first surface to contact a side surface of the roll media in an installed state and a second surface, the first surface having a gripping portion and the second surface opposite the first surface;
a second section having a first surface disposed across from the first surface of the first section to contact another side surface of the roll media in the installed state; and
a magnetic unit coupled to the second surface of the first section.

2. The leader device according to claim 1, wherein the first surface of the second section includes a gripping portion, the first section being a lower section and the second section being an upper section.

3. The leader device according to claim 1, wherein the
magnetic unit is to establish a magnetic field between and to attract the first section and the second section toward each other to grip the roll media in the installed state.

4. The leader device according to claim 1, wherein the leader member further comprises:
a length extending in a media transport direction and a width perpendicular to the length such that the clip member extends across the width of the leader member.

5. The leader device according to claim 1, wherein the leader member further comprises:
a third section disposed between the first section and the second section, the third section having an alignment surface to align a leading edge of the roll media in the installed state.

6. The leader device according to claim 5, wherein the
clip member is to establish a magnetic field between and to attract the upper section and the lower section toward each other to grip the roll media in the installed state.

7. The leader device according to claim 5, wherein the clip member further comprises:
an exterior surface including a first rounded corner and a second rounded corner;
the first rounded corner corresponds to a first intersection between the third section and the first section; and
the second rounded corner corresponds to a second intersection between the third section and the second section, wherein

the alignment surface comprises a wall member extending in a width-wise direction of the leading edge of the roll media to selectively contact the leading edge in response to the clip member being placed in an installed state.

8. A leader device usable with roll media and an image forming system having an output member, the leader device comprising:
a leader member having an first end to attach to the output member of the image forming system; and
a magnetic clip member coupled to the leader member, the magnetic clip member including:
an upper section including:
an upper contact surface to contact a side surface of the roll media, the upper contact surface including an upper gripping portion; and
an upper separation surface opposite the upper contact surface;

a lower section including a lower contact surface disposed across from the upper contact surface to contact another side surface of the roll media, the lower contact surface including a lower gripping portion; and
an intermediate section having an alignment surface to align a leading edge of the roll media; and

a magnetic unit coupled to the upper separation surface of the magnetic clip member;
wherein a magnetic field is established between and to attract the upper section and the lower section toward each other to grip the roll media.

9. The leader device according to claim 8, wherein the leader member further comprises:
a length extending in a media transport direction and a width perpendicular to the length such that the magnetic clip member extends across the width of the leader member.

10. The leader device according to claim 9, wherein the magnetic dip member further comprises:
an exterior surface including a first rounded corner and a second rounded corner;
the first rounded corner corresponding to an intersection between the intermediate section and the upper section; and
the second rounded corner corresponding to an intersection between the intermediate section and the lower section.

11. The leader device according to claim 10, wherein:
the leader member includes plastic; and
the magnetic clip member is a single unitary and integral member.

12. The leader device according to claim 10, wherein the upper gripping portion is a pad.

13. A leader device usable with roll media and an image forming system having an output member, the leader device comprising:
a leader member having:
a first end to attach to the output member of the image forming system; and
a length extending in a media transport direction; and
a width perpendicular to the length; and

a magnetic clip member coupled to the leader member, the magnetic clip member including:
a first section including a first contact surface to contact a side surface of the roll media, the first contact surface including a gripping portion;
a second section including a first contact surface disposed across from the first contact surface of the first section to contact another side surface of the roll media, the first contact surface of the second section including a gripping portion; and
a third section having an alignment surface to align a leading edge of the roll media;
an exterior surface including a first rounded corner and a second rounded corner, the first rounded corner corresponding to an intersection between the third section and the first section and the second rounded corner corresponding to an intersection between the third section and the second section; and
a magnetic unit coupled to the exterior surface of the magnetic clip member at the first section opposite the first contact surface,
wherein a magnetic field is established between and to attract the first section and the second section toward each other to grip the roll media.