JP7328308B2 - Media support device and printer - Google Patents

Description

The present invention relates to a media support device and a printer having the same.

2. Description of the Related Art There is known a printer that sequentially feeds out media from a roll of media and prints on the fed out media. For example, Japanese Patent Application Laid-Open No. 2002-200000 discloses a printer that unrolls a medium from a roll and conveys it by means of a medium conveying means that includes a driving roller and a pinch roller, and rewinds the printed medium with a take-up holder.

Japanese Patent Application Laid-Open No. 2020-90342

The width of the roll on which the media is wound varies. Therefore, a media support device that supports rolls of media before or after printing is required to have a configuration that can accommodate various roll widths. In the media support device, the setting related to the width of the roll is changed each time the width of the roll changes. It is preferable that such a setting change operation related to the width of the roll be easy.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide a media support device whose settings can be easily changed according to the width of the media roll. Another object of the present invention is to provide a printer equipped with such a media support device.

A media support device disclosed herein includes: a support mechanism that rotatably supports a roll around which a sheet-shaped media is wound; and a guide member that supports the support mechanism. The support mechanism includes a roll support member, a support member, and a fixing portion. The roll support member supports the roll. The support member includes a rotary shaft that rotatably supports the roll support member, and an insertion hole penetrating in the first direction and through which the guide member is inserted. The fixed portion has a rotating eccentric cam, and non-slidably fixes the support member to the guide member by the rotation of the eccentric cam.

According to the above-described media support device, by moving the support member along the guide member in the first direction, the position of the roll support member that supports the roll of media in the first direction can be changed according to the width of the roll. can be done. Further, by rotating the eccentric cam, the positions of the supporting member and the roll supporting member in the first direction can be easily fixed. Therefore, it is possible to easily change the setting of the media support device according to the width of the media roll.

1 is a perspective view of a printer according to one embodiment; FIG. 2 is a right side view of the printer; FIG. It is a perspective view from the back side of the printer. Fig. 3 is a perspective view from the left of the right feeder; It is sectional drawing along the left-right direction of the feeder of the right side. FIG. 4 is a vertical cross-sectional view along the front-rear direction of the feeder in an unlocked state; FIG. 4 is a vertical cross-sectional view of the feeder in a locked state; FIG. 11 is a vertical cross-sectional view showing an unlocked state of the feeder of another embodiment; FIG. 11 is a vertical cross-sectional view showing a locked state of the feeder of another embodiment;

An inkjet printer according to one embodiment will be described below with reference to the drawings. It should be noted that the embodiments described herein are, of course, not intended to limit the invention in particular. Further, members and portions having the same action are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted or simplified. In the following description, when the inkjet printer is viewed from the front, the side away from the inkjet printer is the front, and the side closer to the inkjet printer is the rear. In addition, symbols F, Rr, L, R, U, and D in the drawings represent front, rear, left, right, up, and down, respectively. However, these directions are merely for convenience of explanation, and do not limit the installation mode of the inkjet printer.

[Configuration of inkjet printer]
FIG. 1 is a perspective view of a large format inkjet printer (hereinafter referred to as "printer") 10 according to one embodiment. 2 is a right side view of the printer 10. FIG. FIG. 3 is a perspective view of the printer 10 from the rear side. The printer 10 moves the medium 5a wound in a roll in the front-rear direction while unrolling it, and ejects ink from a print head 16 mounted on a carriage 15 that moves in the left-right direction, thereby printing an image on the medium 5a. to form

In this embodiment, the printer 10 is an inkjet printer. In the present embodiment, the “inkjet method” refers to various conventionally known methods including various continuous methods such as a binary deflection method and a continuous deflection method, and various on-demand methods such as a thermal method and a piezoelectric element method. It refers to the inkjet type by

The medium 5a is an object on which an image is printed. The medium 5a is a sheet-shaped recording medium. The material of the media 5a is not particularly limited. The medium 5a may be, for example, paper such as plain paper or inkjet printing paper, or may be a transparent sheet made of resin or the like. A sheet made of metal, rubber, or the like may be used. Also, it may be a cloth. Hereinafter, a roll 5 is a roll of media 5a as a print target.

As shown in FIG. 2, the printer 10 includes a platen 11, a print head 16, a media supply device 20, a transport device 80, and a take-up device 90. A roll 5 of media 5a before printing is loaded in the media supply device 20 . The media supply device 20 supports the roll 5 rotatably in the front-rear direction. The transport device 80 feeds the media 5a from the roll 5 and transports the fed media 5a in the front-rear direction. The print head 16 forms an image on the media 5 a supplied from the media supply device 20 . The winding device 90 winds up the medium 5a on which the image is formed. The printer 10 also includes a carriage moving device (not shown) for moving the carriage 15 in the horizontal direction.

The print head 16 is provided downstream of the media supply device 20 in the transport direction of the media 5a, here on the front side. The print head 16 is mounted on the carriage 15 and arranged above the platen 11 . The print head 16 is configured to eject ink toward the medium 5 a on the platen 11 . The print head 16 moves in the left-right direction by moving the carriage 15 in the left-right direction by a carriage moving device (not shown). The print head 16 forms an image on the medium 5a by ejecting ink while moving in the horizontal direction.

The platen 11 is a support base that supports the media 5a. The platen 11 extends in the front-rear direction and the left-right direction. The medium 5a on the platen 11 is moved back and forth by the conveying device 80. As shown in FIG. As shown in FIG. 2, the conveying device 80 includes pinch rollers 81, grit rollers 82, and a feed motor (not shown). A pinch roller 81 is provided above the platen 11 and presses down the medium 5a from above. A grit roller 82 is provided on the platen 11 . The grit roller 82 is provided at a position facing the pinch roller 81 . A grit roller 82 is connected to the feed motor. When the grit roller 82 rotates while the medium 5a is sandwiched between the pinch roller 81 and the grit roller 82, the medium 5a is conveyed in the front-rear direction.

The pinch roller 81 can be moved vertically by operating a pinch roller lever 83 . The pinch roller 81 presses the medium 5a and separates from the medium 5a by moving up and down. As shown in FIGS. 2 and 3, the pinch roller lever 83 is provided here on the right side of the center of the back side of the printer 10 .

As shown in FIG. 3, the media supply device 20 is provided on the rear side of the printer 10. As shown in FIG. In the media supply device 20 , the roll 5 rotates passively as the media 5 a is pulled by the transport device 80 . As shown in FIG. 3, the media supply device 20 includes a pair of feeders 30 that rotatably support the roll 5, and a first guide pipe 71 and a second guide pipe 71 that support the pair of feeders 30 slidably in the left-right direction. A pipe 72 is provided. The first guide pipe 71 and the second guide pipe 72 extend in the left-right direction. The left-right direction here is a direction parallel to the axial direction of the rolls 5 . The first guide pipe 71 and the second guide pipe 72 are configured by round pipes and supported by the main body of the printer 10 . The second guide pipe 72 is provided forward of the first guide pipe 71 . Therefore, the first guide pipe 71 is located closer to the front than the second guide pipe 72 for the operator working behind the printer 10 . The first guide pipe 71 and the second guide pipe 72 are provided at the same height here.

A pair of feeders 30 are members that hold both ends of the roll 5 . The pair of feeders 30 are engaged with the first guide pipe 71 and the second guide pipe 72 so as to be slidable in the left-right direction. Further, the pair of feeders 30 can be fixed to the first guide pipe 71, although the details will be described later. The left feeder 30 of the pair of feeders 30 is fixed to the first guide pipe 71 after its position is adjusted during the manufacture of the printer 10 . The position of the right feeder 30 is adjusted in the horizontal direction according to the width of the media 5a in the horizontal direction. The feeder 30 on the right side is fixed after its lateral position is adjusted along the first guide pipe 71 and the second guide pipe 72 .

FIG. 4A is a left perspective view of the right feeder (hereinafter simply referred to as feeder) 30. FIG. FIG. 4B is a cross-sectional view of the feeder 30 along the left-right direction. As shown in FIG. 4A, the feeder 30 includes a roll support member 40, a support member 50, and a fixing portion 60. As shown in FIG. The roll support member 40 supports the roll 5 from the outside in the axial direction of the roll 5, here from the right side. The support member 50 is a body portion of the feeder 30 and supports the roll support member 40 rotatably around the axial direction of the roll 5 . The support member 50 is slidably supported in the axial direction of the roll 5 by the first guide pipe 71 and the second guide pipe 72 . The support member 50 is provided further outward than the roll support member 40 in the axial direction of the roll 5, here on the right side. The fixing part 60 is a mechanism for fixing the support member 50 and the first guide pipe 71 so as not to slide.

As shown in FIG. 4A , the roll support member 40 has a roll mounting portion 41 to which the roll 5 is mounted and a handle 42 . The roll support member 40 is rotatably supported by a rotating shaft 51 provided on the support member 50 . The rotating shaft 51 extends in the lateral direction, which is the axial direction of the roll 5 . The rotating shaft 51 is configured to be non-rotatable here. The roll support member 40 is inserted into the rotating shaft 51 and rotates around the rotating shaft 51 . The roll support member 40 rotates together with the roll 5 as the medium 5a is fed out from the roll 5 by the conveying device 80 .

The roll mounting portion 41 protrudes further inward (to the left in this case) in the axial direction of the roll 5 than the handle 42 . The roll mounting portion 41 constitutes the tip (left end) of the roll support member 40 . A right end portion of the roll 5 is mounted on the roll mounting portion 41 . As shown in FIG. 4A, the roll mounting portion 41 has a stepped columnar shape extending in the left-right direction. The roll mounting portion 41 is composed of a first insertion portion 41a, a second insertion portion 41c, and a stepped portion 41e in order from the inner side in the axial direction of the roll 5. As shown in FIG.

A first insertion portion 41a provided at the most distal end in the roll mounting portion 41 is configured in a cylindrical shape. A plurality of protrusions 41b are provided on the cylindrical side surface of the first insertion portion 41a. The multiple protrusions 41b extend in the left-right direction. The plurality of protrusions 41b are provided at regular intervals in the circumferential direction of the first insertion portion 41a. The plurality of projections 41b prevent the roll 5 inserted through the first insertion portion 41a from slipping.

The second insertion portion 41c is provided further outward in the axial direction of the roll 5 than the first insertion portion 41a. The second insertion portion 41c has a columnar shape with a diameter larger than that of the first insertion portion 41a. A roll 5 that is larger than the roll 5 inserted through the first insertion portion 41a is inserted through the second insertion portion 41c. A plurality of protrusions 41d are provided on the cylindrical side surface of the second insertion portion 41c. The multiple protrusions 41d extend in the left-right direction. The plurality of protrusions 41d are provided at regular intervals in the circumferential direction of the second insertion portion 41c. The plurality of protrusions 41d prevent the roll 5 inserted through the second insertion portion 41c from slipping.

The stepped portion 41e is provided further outward in the axial direction of the roll 5 than the second insertion portion 41c. The stepped portion 41e has a thin columnar shape with a larger diameter and a shorter axial length than the second insertion portion 41c. An axially inner surface of the stepped portion 41e constitutes an abutment surface 41f against which the end portion of the roll 5 abuts.

As shown in FIG. 4A , the handle 42 is provided outside the roll mounting portion 41 in the axial direction of the roll 5 . The handle 42 is for rotating the roll support member 40 (roll 5). The operator can rotate the roll support member 40 around the axis of the roll 5 by gripping and rotating the handle 42 . The handle 42 here is configured in a substantially disc shape so that the center of rotation of the roll support member 40 and the center of the handle 42 are aligned. When viewed in the horizontal direction, the handle 42 has a substantially circular shape concentric with the roll mounting portion 41 . The handle 42 is shaped like a disk having a diameter larger than that of the stepped portion 41e.

Here, the handle 42 is provided inside the roll 5 in the axial direction of the support member 50, here to the left. As shown in FIG. 2 , part of the handle 42 protrudes radially outward of the roll 5 from the support member 50 when the roll 5 is viewed in the axial direction. Therefore, it is possible to grasp and operate the handle 42 through the support member 50 from the outside of the support member 50 . As shown in FIG. 4A, the handle 42 has a plurality of recesses 42b that are formed in the outer peripheral portion 42a and recessed radially inward. The plurality of recesses 42b are intended to prevent the operator's hands from slipping when rotating the handle 42. As shown in FIG. A plurality of recesses 42b are provided at equal intervals on the outer peripheral portion 42a of the handle 42 .

In this embodiment, the roll support member 40 is formed as one piece. The roll support member 40 is made of resin, for example. However, the roll support member 40 may be configured by combining a plurality of parts. For example, the roll mounting portion 41 and the handle 42 may be separate bodies. The handle 42 may be provided on the roll support member 40 and configured to be able to rotate the roll support member 40 .

As described above, the support member 50 is provided on the outer side of the roll 5 in the axial direction of the roll support member 40, in this case, on the right side. The support member 50 rotatably supports the roll support member 40 . Further, the support member 50 is supported by the first guide pipe 71 and the second guide pipe 72 so as to be slidable in the left-right direction. The support member 50 extends in the front-rear direction and the up-down direction. The support member 50 here has a substantially triangular shape that widens downward when viewed in the left-right direction. The rotating shaft 51 is provided near the upper vertex of the substantially triangular shape. The support member 50 is provided with a plurality of ribs 50a extending in the front-rear direction and a plurality of ribs 50b extending in the vertical direction. The plurality of ribs 50a and 50b are for reinforcing the support member 50 and improving the strength of the support member 50. As shown in FIG.

As shown in FIG. 4A , the support member 50 includes a support portion 50S that supports the rotating shaft 51, a tubular portion 52, and an engaging recess portion 53. As shown in FIG. The support portion 50S is a portion of the support member 50 having a substantially triangular shape. The cylindrical portion 52 is provided at the rear vertex portion of the two vertices on the base of the substantially triangular support portion 50S. The cylindrical portion 52 is configured in a cylindrical shape extending in the left-right direction. The inner space of the cylindrical tubular portion 52 forms an insertion hole 52a through which the first guide pipe 71 is inserted. The insertion hole 52a penetrates the support member 50 in the left-right direction. The insertion hole 52a is a substantially circular through hole when viewed in the left-right direction. The tubular portion 52 is provided with two stopper holes 52a1 and 52a2 penetrating in the radial direction. The two stopper holes 52a1 and 52a2 are provided side by side in the left-right direction. The stopper hole 52a2 (hereinafter also referred to as the second stopper hole 52a2 as appropriate) is arranged to the right of the stopper hole 52a1 (hereinafter also referred to as the first stopper hole 52a1 as appropriate). As shown in FIG. 4B, the first stopper hole 52a1 is open on the inner peripheral surface of the cylindrical portion 52 on the left side of the support portion 50S. The second stopper hole 52a2 opens to a portion of the inner peripheral surface of the cylindrical portion 52 on the right side of the support portion 50S. 4B is the center line of the support portion 50S in the left-right direction, and the center line of the cylindrical portion 52 in the left-right direction. However, the horizontal center line of the support portion 50S and the horizontal center line of the cylindrical portion 52 need not coincide with each other.

Around the insertion hole 52a, a thick portion 52c is provided that is thicker than the plate thickness of the support member 50 (the plate thickness in the radial direction of the arc portion forming the engaging recess 53). The thick portion 52c supports the central portion of the outer peripheral surface 52b of the tubular portion 52 in the lateral direction, and the outer peripheral surface 52b of the tubular portion 52 is fitted to the thick portion 52c in a non-movable state. are combined. The thick portion 52c is provided at the rear vertex of the two vertices on the base of the substantially triangular shape of the support member 50, and is formed along the entire circumference of the tubular portion 52 (see also FIG. 5). A portion of the thick portion 52c (a portion positioned between a first arm 65a and a second arm 65b of the lever 65, which will be described later) protrudes outward in the radial direction of the insertion hole 52a. is sandwiched between the first arm 65a and the second arm 65b.

The engaging recess 53 is provided at the front vertex of the two lower vertexes of the substantially triangular support portion 50S. The engaging recess 53 has a substantially C-shaped shape with an open front side when viewed in the left-right direction. The engaging recess 53 is a recess recessed rearward. A second guide pipe 72 is inserted through the engaging recess 53 . By inserting the first guide pipe 71 through the insertion hole 52a and inserting the second guide pipe 72 into the engaging recess 53, the posture of the feeder 30 and its position in the front-rear direction and the vertical direction are determined. The feeder 30 can move in the left-right direction along the first guide pipe 71 and the second guide pipe 72 .

The fixing part 60 is a mechanism for fixing and releasing the feeder 30 to the first guide pipe 71 . FIG. 5 is a longitudinal sectional view of the feeder 30 along the front-rear direction. As shown in FIG. 5, the fixed portion 60 includes a first cam 61, a second cam 62 (overlapped with the first cam 61 in FIG. 5), a first stopper 63, and a second stopper 64 (see FIG. 5). 5 includes a lever 65 and a lever 65 overlapping the first stopper 63 (see also FIG. 4A). The fixed portion 60 is configured such that the first cam 61 and the second cam 62 are rotated by vertically rotating the lever 65 . As shown in FIG. 4B, the fixed portion 60 includes a shaft portion 67 connected to the first cam 61 and extending in the left-right direction, and a shaft portion 68 connected to the second cam 62 and extending in the left-right direction. Axial portions 67 and 68 are rotatably inserted into hole portion 52c1 provided in thick portion 52c of feeder 30 . However, the shaft portion may be provided on the thick portion 52c of the cylindrical portion 52 instead of the fixed portion 60. FIG. Axial portions 67 and 68 rotate about rotation axis Ax extending in the left-right direction. By rotating the first cam 61 and the second cam 62, the first stopper 63 and the second stopper 64 appear in the insertion hole 52a or retreat from the insertion hole 52a, respectively. Thereby, the feeder 30 is fixed to or released from the first guide pipe 71 .

As shown in FIG. 5, the first cam 61 is configured to rotate around a rotation axis Ax extending in the left-right direction. The first cam 61 is provided radially outward of the first stopper hole 52 a 1 on the left side of the tubular portion 52 . As shown in FIG. 5, the first cam 61 is an eccentric cam whose distance from the rotation axis Ax varies depending on the position in the circumferential direction. The first cam 61 has a projecting portion 61a that is longer than other portions from the rotation axis Ax. A tip portion 61a1 of the projecting portion 61a is formed in a shape as if it were cut off. The tip portion 61a1 is configured to be flat.

The second cam 62 is provided radially outward of the second stopper hole 52 a 2 on the right side of the cylindrical portion 52 . The second cam 62 rotates in synchronization with the first cam 61 around the rotation axis Ax common to the first cam 61 . The second cam 62 is configured to have the same shape as the first cam 61 when viewed in the direction of the rotation axis Ax (viewed in the horizontal direction). Here, the second cam 62 is configured symmetrically with the first cam 61 .

The first stopper 63 is a member that abuts against the first guide pipe 71 inserted through the insertion hole 52 a to fix the feeder 30 to the first guide pipe 71 . The first stopper 63 is embedded in the support member 50 so as to be exposed on the inner peripheral surface of the insertion hole 52a. Specifically, as shown in FIG. 5, the first stopper 63 is inserted into the first stopper hole 52a1 on the left side from the radially outer side of the cylindrical portion 52, and passes through the first stopper hole 52a1 into the insertion hole 52a. Exposed. More specifically, as shown in FIG. 4B, the first stopper 63 passes through the first stopper hole 52a1 and appears in the insertion hole 52a on the left side of the support portion 50S. The first stopper 63 is provided between the first cam 61 and the insertion hole 52a.

As shown in FIG. 4A, the first stopper 63 is configured in a flat plate shape. As shown in FIG. 5, the surface of the first stopper 63 exposed through the insertion hole 52a (the radially inner surface of the insertion hole 52a) constitutes a contact surface 63a1 that contacts the first guide pipe 71. there is The back surface of the contact surface 63 a 1 forms a force receiving surface 63 a 2 that receives the force of the first cam 61 . The force receiving surface 63a2 is recessed from the entire first stopper 63 toward the contact surface 63a1. Therefore, the thickness of the force receiving portion 63a having both the contact surface 63a1 and the force receiving surface 63a2 is thin. The first stopper 63 has a collar portion 63b that fits into a positioning portion 52d formed around the first stopper hole 52a1.

The first stopper 63 is made of an elastic material, here rubber and resin. Specifically, the contact surface 63a1 of the first stopper 63 is made of rubber, and the force receiving surface 63a2 is made of resin. When receiving the force of the first cam 61, the force receiving portion 63a of the first stopper 63 is elastically deformed radially inward of the insertion hole 52a. As a result, the contact surface 63a1 of the force receiving portion 63a protrudes into the insertion hole 52a. When the contact surface 63a1 is pushed by the first cam 61 and protrudes into the insertion hole 52a, the feeder 30 is fixed to the first guide pipe 71 by the friction between the contact surface 63a1 and the first guide pipe 71. . In a state where the force receiving portion 63a is not pushed by the first cam 61 and the contact surface 63a1 of the force receiving portion 63a is retracted outside the insertion hole 52a, the feeder 30 and the first guide pipe 71 are released. The contact surface 63a1 of the first stopper 63 is made of rubber to ensure deformation when the first cam 61 comes into contact, while the force receiving surface 63a2 with which the first cam 61 contacts is more resistant to abrasion than rubber. It is configured to improve durability by using resin.

The second stopper 64 is embedded in the support member 50 so as to be exposed on the inner peripheral surface of the insertion hole 52a through the second stopper hole 52a2 on the right side. As shown in FIG. 4B, the second stopper 64 passes through the second stopper hole 52a2 and appears in the insertion hole 52a on the right side of the support portion 50S. The second stopper 64 is configured similarly to the first stopper 63 . The second stopper 64 is also made of an elastic material, here rubber and resin. The second stopper 64 appears in the insertion hole 52a according to the rotational position of the second cam 62, and retreats outside the insertion hole 52a. The movement of the second stopper 64 also fixes or releases the feeder 30 and the first guide pipe 71 . FIG. 5 shows a state in which the feeder 30 and the first guide pipe 71 are unlocked (hereinafter also referred to as unlocked state). A state in which the feeder 30 is fixed to the first guide pipe 71, which will be described later, is also called a locked state.

The lever 65 is connected to the first cam 61 and the second cam 62 and rotates the first cam 61 and the second cam 62 . The lever 65, the first cam 61 and the second cam 62 are here constructed as one piece. However, the lever 65, the first cam 61, and the second cam 62 may be configured as separate parts from each other. As shown in FIG. 4A, the lever 65 includes a first arm 65a, a second arm 65b, and a connecting portion 65c. The first arm 65 a has a shape that follows the outer surface of the support member 50 , here, an arc shape that follows the outer peripheral surface 52 b of the tubular portion 52 . As shown in FIG. 5, one end of the first arm 65a is connected to the first cam 61. As shown in FIG.

As shown in FIG. 4A, the second arm 65b is provided to the right of the first arm 65a. The second arm 65b has the same shape as the first arm 65a when viewed in the horizontal direction. That is, the second arm 65b also has an arcuate shape following the outer peripheral surface 52b of the cylindrical portion 52. As shown in FIG. One end of the second arm 65b is connected to the second cam 62 . The connecting portion 65c is connected to the other end of the first arm 65a and the other end of the second arm 65b. The connecting portion 65c extends in the left-right direction. The connecting portion 65c is a portion that connects the first arm 65a and the second arm 65b to improve the strength of the lever 65 and is held by the user when the lever 65 is operated.

The lever 65 is configured to rotate the first cam 61 and the second cam 62 around the rotation axis Ax. By rotating the lever 65, the first cam 61 and the second cam 62 can be rotated around the rotation axis Ax. The lever 65 is provided on the rear side of the feeder 30 and can be operated from the rear side. As shown in FIG. 4A, the horizontal distance between the right end of the first arm 65a and the left end of the second arm 65b (hereinafter referred to as the internal distance between the first arm 65a and the second arm 65b) is equal to that of the cylinder. It corresponds to the lateral width of the thick portion 52 c of the shaped portion 52 .

The feeder 30 on the left side is configured symmetrically with the feeder 30 on the right side. As shown in FIG. 3, the roll support member 40 of the left feeder 30 extends rightward from the support member 50 . The roll support member 40 of the left feeder 30 and the roll support member 40 of the right feeder 30 face each other. The lever 65 of the left feeder 30 is provided on the rear side.

As shown in FIG. 1 , the winding device 90 is provided on the front side of the printer 10 . The winding device 90 includes two guide pipes 91 and 92 , a pair of left and right feeders 93 and 94 , a winding motor 95 , a winding bar 96 and a tension bar 97 . The two guide pipes 91 and 92 are arranged side by side in the front-rear direction and extend in the left-right direction. The pair of left and right feeders 93 and 94 are arranged in a state in which the support members 93b and 94b are turned upside down with respect to the media supply device 20 so that the apexes on which the roll support members 93a and 94a are provided are positioned downward, and the two guide pipes 91 are arranged. , 92. The left feeder 93 is supported by two guide pipes 91 and 92 and fixed at a predetermined position in the left-right direction.

The right feeder 94 is connected to a winding motor 95 . A roll support member 94 a of the right feeder 94 is rotated by a winding motor 95 . Left and right feeders 93 and 94 sandwich a take-up bar 96 . When the roll support member 94a rotates while the left and right feeders 93 and 94 hold the winding bar 96, the winding bar 96 rotates. The rotating winding bar 96 winds the media 5a after printing on the winding device 90 . The winding device 90 thereby forms a roll 5 of the printed media 5a.

The pair of left and right feeders 93 and 94 here are the same as the pair of left and right feeders 30 of the media feeding device 20 except for the roll support members 93a and 94a and the fixing portions 93c and 94c. In this embodiment, the roll support members 93a and 94a are not provided with handles. Since the roll supporting members 93a and 94a of the winding device 90 are rotated by the winding motor 95, it is not assumed to manually rotate the roll 5 of the medium 5a using a handle.

In addition, in this embodiment, the fixed portions 93c and 94c of the take-up device 90 differ from the media supply device 20 in the positions of the rotation shafts of the cams (not shown). In the take-up device 90, the pair of feeders 93 and 94 are used in a state in which the media supply device 20 is turned upside down. 94. Therefore, the rotation axis position of the cam is different from that of the media feeding device 20 so that the load of the roll 5 in the locked state can be supported by the feeders 93 and 94 . However, the feeders 93 and 94 of the take-up device 90 may be the same as the feeder 30 of the media supply device 20 .

The tension bar 97 is provided forward of the winding bar 96 . The tension bar 97 is configured to swing vertically. The tension of the medium 5a on the platen 11 is maintained at a predetermined tension by winding the medium 5a around the tension bar 97 upstream of the take-up bar 96 in the conveying direction.

[Roll setting]
The operation of setting the roll 5 to the media supply device 20 and the operation of feeding the medium 5a from the roll 5 will be described below. First, the operation of setting the roll 5 to the media supply device 20 will be described. In the operation of setting the roll 5 to the media supply device 20, first, the right feeder 30 is brought into the unlocked state (the state shown in FIG. 5). This allows the feeder 30 to move in the horizontal direction along the first guide pipe 71 and the second guide pipe 72 . As shown in FIG. 5, in the unlocked state of the feeder 30, the lever 65 hangs downward with the rotation axis Ax as a fulcrum. At this time, the force receiving surface 63a2 of the first stopper 63 faces the portion of the first cam 61 other than the projecting portion 61a. At this time, the force receiving surface 63a2 of the first stopper 63 and the first cam 61 are separated. The contact surface 63a1 of the first stopper 63 is retracted outside the insertion hole 52a.

The second cam 62 is configured to rotate in synchronism with the first cam 61 about a common rotation axis Ax with the first cam 61 . The second cam 62 is configured to have the same shape as the first cam 61 when viewed in the direction of the rotation axis Ax. Also, the second cam 62 is connected to the lever 65 . Therefore, when the lever 65 is operated, the second cam 62 rotates together with the first cam 61 . Movement of the first cam 61 and movement of the second cam 62 are synchronized. The second stopper 64 appears in the insertion hole 52a in synchronism with the first stopper 63, and retreats to the outside of the insertion hole 52a. Accordingly, at this time, the second stopper 64 is also retracted to the outside of the insertion hole 52a, and the feeder 30 is not locked.

In the operation of setting the roll 5 to the media supply device 20 , next, the roll 5 is set while adjusting the lateral position of the right feeder 30 according to the width of the roll 5 . When the roll 5 is set in the media supply device 20, the roll 5 is sandwiched between the left and right feeders 30, and the left and right ends of the roll 5 abut against the abutment surfaces 41f of the left and right roll support members 40, respectively. At this time, the second insertion portion 41 c of the roll support member 40 is inserted into the inner space of the cylindrical roll 5 . In this state, the right feeder 30 is locked. In the case of the roll 5 of the type into which the first insertion portions 41a of the roll support members 40 are inserted, the left and right ends of the roll 5 are respectively inserted into the first insertion portions 41a of the left and right roll support members 40 and the first insertion portions 41a. 2 hits the step between the insertion portion 41c.

In the lock operation of the feeder 30, the lever 65 is rotated upward. FIG. 6 is a longitudinal sectional view of the feeder 30 in locked state. As shown in FIG. 6, in the locked state of the feeder 30, the first cam 61 is positioned at a rotational position such that the flat tip portion 61a1 of the projecting portion 61a contacts the force receiving surface 63a2 of the first stopper 63. there is Hereinafter, the rotational position of the first cam 61 will also be referred to as lock position P1. At the lock position P1, the projecting portion 61a of the first cam 61 presses the force receiving portion 63a of the first stopper 63 radially inward of the insertion hole 52a. As a result, the first stopper 63 appears in the insertion hole 52a and comes into contact with the first guide pipe 71 inserted through the insertion hole 52a. The thickness of the force receiving portion 63a of the first stopper 63 is thin so that the pressing force of the first cam 61 is easily transmitted to the first guide pipe 71. As shown in FIG. Similarly, the second stopper 64 appears in the insertion hole 52a and contacts the first guide pipe 71 inserted through the insertion hole 52a. As a result, the feeder 30 is fixed to the first guide pipe 71 by the frictional force between the first stopper 63 and the second stopper 64 and the first guide pipe 71 .

As shown in FIG. 6 , when the feeder 30 is locked, the lever 65 is in contact with the outer surface of the support member 50 , more specifically, the outer peripheral surface 52 b of the cylindrical portion 52 . In other words, the lever 65 is configured to contact the outer surface of the support member 50 (here, the outer peripheral surface 52b of the cylindrical portion 52) at a position corresponding to the lock position P1 of the first cam 61 and the second cam 62. ing. Here, the lever 65 is configured such that the inner peripheral surfaces of the first arm 65a and the second arm 65b abut against the outer peripheral surface 52b of the cylindrical portion 52 when the feeder 30 is locked. The user can move the first cam 61 and the second cam 62 to the lock position P1 by rotating the lever 65 upward until it comes into contact with the outer peripheral surface 52b of the cylindrical portion 52 and cannot be moved.

6, when the feeder 30 is locked, the lever 65 is arranged along the outer surface of the support member 50, more specifically along the outer peripheral surface 52b of the tubular portion 52. As shown in FIG. The lever 65 has a shape that follows the outer surface of the support member 50 (here, the outer peripheral surface 52b of the cylindrical portion 52), and is locked at a position corresponding to the lock position P1 of the first cam 61 and the second cam 62. It is configured along the outer surface of the support member 50 (here, the outer peripheral surface 52b of the cylindrical portion 52). Here, the lever 65 is configured such that the inner peripheral surfaces of the first arm 65 a and the second arm 65 b correspond to the outer peripheral surface 52 b of the cylindrical portion 52 . As described above, the inner dimension of the first arm 65a and the second arm 65b corresponds to the width of the thick portion 52c of the cylindrical portion 52 in the left-right direction. Therefore, the thick portion 52c also serves as a guide when the lever 65 is rotated. When the lever 65 approaches the position corresponding to the lock position P1 of the first cam 61 and the second cam 62, as shown in FIG. 4A, the first arm 65a and the second arm 65b move to the left of the thick portion 52c. It rotates along the plane and the right side. The roll 5 is set in the media supply device 20 by the above operations.

[Feed media]
Next, the work of feeding the media 5a from the roll 5 set in the media supply device 20 will be described. In the feeding operation of the medium 5a, the user pulls out the front end of the medium 5a from the roll 5 and inserts it into the rear opening 14 of the printer 10 (see FIG. 3). When the medium 5a is fed out onto the platen 11 through the rear opening 14, the pinch roller lever 83 is operated and the pinch roller 81 is lowered. As a result, the medium 5a is pressed on the platen 11. FIG. After that, the grit roller 82 is driven, and the media 5a is conveyed forward until the front end reaches the winding device 90 . The front end of the medium 5 a is set on the winding bar 96 of the winding device 90 .

In the operation of feeding the medium 5a as described above, or in the transportation of the medium 5a during printing, the transportation direction of the medium 5a may be skewed with respect to the planned transportation direction (here, the front-rear direction). The cause of such skewing is, for example, that the forces required to peel off the media 5a from the roll 5 are different between the left and right sides of the roll 5, or the like. In the printer 10 according to the present embodiment, when skew feeding of the medium 5a occurs, the skew feeding of the medium 5a can be eliminated by operating the media supply device 20 .

Specifically, in the operation of eliminating the skew of the media 5a, the roll mounting portion 41 is rotated rearward (hereinafter, also referred to as reverse rotation) by operating the handle 42 by the user. The fed medium 5 a is rewound onto the roll 5 by the reverse rotation of the roll mounting portion 41 . As a result, the medium 5a follows the axis of the roll 5, and the oblique feeding of the medium 5a is eliminated.

[Action and effect of the present embodiment]
The above is the description of the configuration of the printer 10 according to the present embodiment, the operation of setting the roll 5, and the operation of feeding the medium 5a. The effects of the printer 10 according to this embodiment will be described below.

The printer 10 according to this embodiment includes a handle 42 capable of rotating a roll support member 40 that supports the roll 5 . In the present embodiment, the handle 42 has a portion projecting outward in the radial direction of the roll 5 from the support member 50 that supports the roll support member 40 when viewed in the axial direction of the roll 5 . With such a configuration, the roll support member 40 can be easily manually rotated by operating the handle 42 . In particular, in the present embodiment, a portion of the handle 42 protrudes radially outward of the roll 5 from the support member 50 when viewed in the axial direction of the roll 5 . Therefore, the handle 42 can be operated through the support member 50, and the manual rotation operation of the roll support member 40 is easy. Therefore, as described above, for example, the roll support member 40 can be reversely rotated to eliminate the skew of the media 5a. In addition, for example, the handle 42 can be used to reversely rotate the roll support member 40 to eliminate slack in the medium 5a, or the handle 42 can be used to rotate the roll support member 40 forward when the medium 5a is first fed out. As described above, in the winding device 90, the roll supporting members 93a and 94a are rotated by the winding motor 95 and are not supposed to be manually rotated. Therefore, the roll support members 93a and 94a of the winding device 90 are not provided with handles. On the other hand, since the media supply device 20 is not provided with a motor, the operation of manually operating the roll support member 40 is frequently performed. Therefore, the workability of manually rotating the roll support member 40 by the handle 42 can be improved.

In conventional printers, such a handle was not provided, so when you want to rotate the roll manually, you have to touch the roll to rotate the roll itself, or if there is an operable part on the roll support member ( For example, if the roll support member has a portion exposed to the outside of the roll), the roll support member is rotated by manipulating that portion while avoiding interference with the support member that supports the roll support member. was Therefore, it has been necessary to rotate the roll supporting member, knowing that the roll may be damaged or soiled by touching, or with great effort. According to the printer 10 according to the present embodiment, roll loading can be performed by operating the portion of the handle 42 that protrudes outward from the support member 50 without incurring such danger or exerting a great deal of labor. The portion 41 can be easily manually rotated.

In this embodiment, the support member 50 that rotatably supports the roll support member 40 is provided further outward in the axial direction of the roll 5 than the roll support member 40 , and the handle 42 is positioned closer to the roll than the support member 50 . 5 in the axial direction. According to this configuration, the handle 42 is provided axially inward of the roll 5 relative to the support member 50, so that the length of the roll 5 of the media supply device 20 in the axial direction can be shortened. In the present embodiment, the support member 50 that rotatably supports the roll support member 40 is provided outside the roll support member 40 in the axial direction of the roll 5 . Member 50 can be an obstacle. Even in this case, a part of the handle 42 protrudes radially outward of the roll 5 more than the support member 50 when viewed in the axial direction of the roll 5 . The handle 42 is easy to operate even though it is provided axially inward.

In the present embodiment, the handle 42 is configured in a substantially disc shape such that the center of rotation of the roll support member 40 and the center match. Therefore, the handle 42 can be configured so as not to protrude radially outward of the roll support member 40 so as to be compact. For example, as shown in FIG. 3, members such as a pinch roller lever 83 are generally arranged in the vicinity of the roll support member 40, and it is difficult to secure a space for a handle in the vicinity of the roll support member 40. . In the present embodiment, the handle 42 is configured in a substantially disc shape so that the center of rotation of the roll support member 40 coincides with the center of the roll support member 40, thereby making the handle 42 more compact. .

In this embodiment, the handle 42 is provided with a concave portion 42b that is formed in a substantially circular outer peripheral portion 42a and that is recessed radially inward. The recessed portion 42b makes it easier for the user to grip the handle 42, and the operability of the handle 42 is improved.

In this embodiment, the support member 50 is configured in a substantially triangular shape when viewed in the axial direction of the roll 5 . Therefore, a larger portion of the handle 42 protrudes radially outward of the roll 5 than the support member 50 . Thereby, the handle 42 can be easily grasped. In this embodiment, the support member 50 is configured to support the handle 42 near one vertex thereof. Therefore, the width of the support member 50 in the front-rear direction is small near the handle 42 , and more of the handle 42 protrudes radially outward of the roll 5 than the support member 50 .

In this embodiment, the roll support member 40 has a stepped portion 41e in order to prevent the outer peripheral portion 42a of the handle 42 from becoming difficult to grip due to the end portion of the roll 5 coming into contact with the handle 42. As shown in FIG. A gap is secured between the handle 42 and the roll 5 by abutting the end of the roll 5 against the abutment surface 41f of the stepped portion 41e. This makes it easier to grip the outer peripheral portion 42 a of the handle 42 .

Further, according to the printer 10 of the present embodiment, the support member 50 is slidably supported in the axial direction of the roll 5 by the first guide pipe 71 and the second guide pipe 72 . The feeder 30 includes a fixing portion 60 that fixes the support member 50 and the first guide pipe 71 in a non-slidable manner. The fixed portion 60 has a rotating first cam 61 and fixes the support member 50 and the first guide pipe 71 by the rotation of the first cam 61 . According to such a configuration, by moving the support member 50 in the left-right direction along the first guide pipe 71 and the second guide pipe 72, the position of the roll support member 40 supporting the roll 5 in the left-right direction can be changed to that of the roll 5. Width can be changed. Further, by rotating the first cam 61, the lateral positions of the supporting member 50 and the roll supporting member 40 can be easily fixed. Therefore, the work of changing the position of the feeder 30 according to the width of the roll 5 can be easily performed.

Since the fixing and unlocking operation of the feeder 30 is an operation that only rotates the first cam 61, it is much easier than other fixing and unlocking operations such as tightening and loosening screws. Easy. According to the printer 10 of this embodiment, it is possible to easily perform an operation to change the setting of the media feeding device 20 according to the width of the roll 5 . The setting of the winding device 90 may be changed by moving and fixing the feeder 93 according to the width of the roll 5 .

More specifically, the support member 50 according to the present embodiment has an insertion hole 52a that penetrates the support member 50 in a direction parallel to the axial direction of the roll 5 (here, left and right direction). A first guide pipe 71 is inserted through the insertion hole 52a. The fixed part 60 here includes a rotating first cam 61 and a first stopper 63 . The first stopper 63 is configured to appear in the insertion hole 52 a according to the rotational position of the first cam 61 and abut on the first guide pipe 71 . According to this configuration, by rotating the first cam 61, it is possible to switch between a state in which the first stopper 63 appears inside the insertion hole 52a and a state in which the first stopper 63 is retracted to the outside of the insertion hole 52a. can. Therefore, it is possible to switch between a state in which the feeder 30 can be slid along the first guide pipe 71 and a state in which the feeder 30 is fixed to the first guide pipe 71 .

In the printer 10 according to this embodiment, the first stopper 63 is made of an elastic material. According to such a configuration, when the first stopper 63 appears in the insertion hole 52a, the first stopper 63 is elastically deformed. Therefore, a high fixing force can be obtained without damaging the first guide pipe 71 . Also, if the stopper is made of a material that is difficult to deform, the stopper, the cam, and the guide pipe are required to have high dimensional accuracy. Therefore, the dimensions of the first stopper 63, the first cam 61, and the first guide pipe 71 do not require high accuracy. Therefore, the fixed portion 60 can be easily configured. Although the material of the first stopper 63 is preferably an elastic material, it is not limited to rubber. The same applies to the second stopper 64 as well.

In this embodiment, the fixed portion 60 includes a lever 65 that is connected to the first cam 61 and rotates the first cam 61 . Therefore, the operation of rotating the first cam 61 is easier. The lever 65 has a shape following the outer surface of the support member 50 and is configured to follow the outer surface of the support member 50 at a position corresponding to the lock position P1 of the first cam 61 . According to this configuration, the lever 65 is arranged along the outer surface of the support member 50 when the feeder 30 is locked. Therefore, the feeder 30 in the locked state can be made compact.

In this embodiment, the lever 65 is configured to contact the outer surface of the support member 50 at a position corresponding to the lock position P1 of the first cam 61 . In order to move the first cam 61 to the lock position P1, it is preferable to operate the lever 65 until it comes into contact with the outer surface of the support member 50 and cannot be moved. Therefore, it is easy for the user to understand that the feeder 30 is in the locked state. For example, in a configuration in which a screw is tightened to fix the feeder, it is possible to continue tightening the screw even after fixing, which may damage the feeder or the guide pipe. can reduce such fears.

In this embodiment, the fixed portion 60 includes a second cam 62 that rotates in synchronism with the first cam 61 around a common rotation axis Ax with the first cam 61 . The second cam 62 is here connected to the lever 65 and rotates together with the first cam 61 . The fixed portion 60 also includes a second stopper 64 that protrudes and retracts in the insertion hole 52 a according to the rotational position of the second cam 62 . The second stopper 64 is configured to appear in the insertion hole 52 a in synchronization with the first stopper 63 and abut against the first guide pipe 71 . According to such a configuration, since the fixing force of the second stopper 64 works in addition to the first stopper 63, the fixing force of the feeder 30 can be increased. In addition, since the second cam 62 is also rotated by the same operation as the first cam 61, and the fixing force of the second stopper 64 is also applied, fixing and unlocking operations of the feeder 30 are not complicated.

In this embodiment, the support member 50 includes a cylindrical portion 52 extending in the left-right direction and forming an insertion hole 52a, and extending in a direction intersecting the left-right direction (here, upward or downward) and connected to the cylindrical portion 52. , and a support portion 50</b>S that supports the rotating shaft 51 . The cylindrical portion 52 has a first stopper hole 52a1 that opens on the inner peripheral surface on the left side of the support portion 50S and allows the first stopper 63 to appear in the insertion hole 52a on the left side of the support portion 50S; A second stopper hole 52a2 that opens to the inner peripheral surface on the right side of the support portion 50S and allows the second stopper 64 to appear in the insertion hole 52a on the right side of the support portion 50S is provided. According to such a configuration, tilting in the left-right direction is suppressed when the feeder 30 is locked. The support portion 50S is connected to the tubular portion 52 and extends to intersect the tubular portion 52 . Therefore, the supporting portion 50S tends to tilt the cylindrical portion 52 in the left-right direction due to its weight. For example, if there is only one stopper, the feeder 30 is likely to tilt in the left-right direction and be fixed when locked. However, since the first stopper 63 and the second stopper 64 are separately arranged on the left side and the right side of the support portion 50S, the feeder 30 is less likely to tilt when locked.

[Other embodiments]
A preferred embodiment has been described above. However, the printers disclosed herein are not limited to the embodiments described above.

For example, in the embodiment described above, the handle 42 for rotating the roll support member 40 has a disk-like shape, but the shape of the handle is not limited. The handle may be, for example, a rod-shaped member radially extending in the radial direction of the roll support member.

In the embodiment described above, the handle 42 is arranged axially inward of the roll 5 than the support member 50 that supports the roll support member 40 . However, the handle may be arranged axially outward of the roll relative to the support portion that supports the roll support member. The position of the handle is not particularly limited.

In the above-described embodiment, the cams 61 and 62 and the lever 65 of the fixing portion 60 are configured as one component, and the cams 61 and 62 and the lever 65 and the stoppers 63 and 64 are configured as separate components. However, the configurations of cams, stoppers, and levers are not limited to this. For example, the cam and stopper may be constructed as one piece. In this case, the tip of the projecting portion of the cam may function as a stopper.

Although the stoppers 63 and 64 are made of an elastic material in the above-described embodiments, the material of the stoppers is not particularly limited.

In the embodiment described above, the lever 65 is configured to follow the contour of the support member 50 and to abut against the support member 50 in the locked state. However, the shape and arrangement of the lever are not limited as long as the lever can rotate the cam. For example, the lever does not have to be rotated around the rotation axis extending substantially parallel to the axis of the insertion hole, and may be rotated in another direction. The cam also need not be rotated around the axis of rotation extending substantially parallel to the axis of the insertion hole, and may be rotated in another direction.

In the above-described embodiment, two sets of cams and stoppers are provided and one lever is provided, but the number of sets of cams and stoppers and the number of levers are not limited.

The method of fixing and releasing the fixation between the feeder and the guide pipe is not limited to the method in which the stopper protrudes and retracts in the insertion hole. FIG. 7 is a vertical cross-sectional view showing an unlocked state of the feeder 130 of another embodiment. FIG. 8 is a longitudinal sectional view showing the locked state of the feeder 130. As shown in FIG. As shown in FIGS. 7 and 8, the support member 150 of the feeder 130 according to another aspect may include a gripping portion 151 capable of gripping the first guide pipe 71 by elastic deformation. The gripping portion 151 extends in a direction parallel to the axial direction of the roll 5 (see FIG. 5 , etc.) (here, the left-right direction), and has a C-shaped cylinder with a part cut in the circumferential direction when viewed in the axial direction of the roll 5. are configured in the form of The inner space of the cylindrical grip portion 151 constitutes an insertion hole 152 through which the first guide pipe 71 is inserted.

Force receiving portions 153 and 154 protruding outward in the radial direction of the gripping portion 151 are provided at both circumferential ends of the C-shaped cylindrical gripping portion 151 (both ends facing each other across the gap 151a). It is As shown in FIG. 8 , when the force receiving portions 153 and 154 receive a force that causes the force receiving portions 153 and 154 to approach each other, the grip portion 151 elastically deforms and grips the first guide pipe 71 . As shown in FIG. 7, the grasping portion 151 releases the first guide pipe 71 when the force receiving portions 153 and 154 do not receive such force.

The fixed portion 160 of the feeder 130 has an eccentric cam 161 and is configured to elastically deform the gripping portion 151 by rotating the eccentric cam 161 . The fixing portion 160 thereby fixes the support member 150 and the first guide pipe 71 . The eccentric cam 161 is provided so as to face the back surface of the surface of the force receiving portion 153 on the side of the gap 151a (referred to as force receiving surface 153a). As shown in FIG. 7, the eccentric cam 161 is an eccentric cam whose distance from the rotation axis Ax2 varies depending on the position in the circumferential direction. The eccentric cam 161 has a projecting portion 161a whose distance from the rotation axis Ax2 is longer than other portions. As shown in FIG. 7, when the portion of the eccentric cam 161 other than the projecting portion 161a faces the force receiving surface 153a, the eccentric cam 161 and the force receiving surface 153a are separated from each other. At this time, the grip portion 151 releases the first guide pipe 71 .

As shown in FIG. 8, when the eccentric cam 161 is rotated and the projecting portion 161a is directed toward the force receiving surface 153a, the projecting portion 161a of the eccentric cam 161 contacts the force receiving surface 153a. In this state, the projecting portion 161a of the eccentric cam 161 pushes the force receiving surface 153a so that the force receiving portion 153 on one side approaches the force receiving portion 154 on the other side. As a result, the gripping portion 151 elastically deforms and grips the first guide pipe 71 . As a result, the support member 150 is non-slidably fixed to the first guide pipe 71 . The fixing and unlocking method between the feeder and the guide pipe may be, for example, the method described above.

Furthermore, the technology disclosed herein can be used not only in inkjet printers, but also in other devices equipped with a media support device that supports a roll of sheet-like media. For example, the technology disclosed herein may be used in a cutting device that cuts media into a desired shape with a cutter. Also, the technology disclosed herein may be applied to printers other than inkjet printers.

5 roll 5a media 10 inkjet printer (printer)
16 print head 20 media supply device 30 feeder (support mechanism)
40 roll support member 50 support member 52a insertion hole 60 fixed portion 61 first cam (eccentric cam)
62 Second cam (second eccentric cam)
63 First stopper (stopper)
64 Second stopper 65 Lever 71 First guide pipe (guide member)
151 grip

Claims (8)

a support mechanism that rotatably supports a roll around which a sheet-like medium is wound;
a guide member that extends in a first direction parallel to the axis of the roll and supports the support mechanism slidably in the first direction;
The support mechanism is
a roll supporting member that supports the roll;
a support member including a rotary shaft that rotatably supports the roll support member and an insertion hole penetrating in the first direction and through which the guide member is inserted;
a cam shaft; an eccentric cam that rotates vertically around the cam shaft; a stopper that comes into contact with the guide member by appearing in the insertion hole according to the rotational position of the eccentric cam; and a stopper connected to the eccentric cam. a lever that rotates the eccentric cam, and a fixing portion that non-slidably fixes the support member to the guide member by bringing the stopper into contact with the guide member due to the rotation of the eccentric cam; with
The lever extends along the outer surface of the support member when the support member is fixed to the guide member by the stopper, and the cam shaft serves as a fulcrum when the support member and the guide member are released. is configured to hang below the support member as
The fixed part is
a second eccentric cam that rotates about the cam shaft in synchronization with the eccentric cam;
a second stopper that appears in the insertion hole according to the rotational position of the second eccentric cam and contacts the guide member in synchronization with the stopper;
Media support device. The stopper is made of an elastic material,
The media support device according to claim 1. a support mechanism that rotatably supports a roll around which a sheet-like medium is wound;
a guide member that extends in a first direction parallel to the axis of the roll and supports the support mechanism slidably in the first direction;
The support mechanism is
a roll supporting member that supports the roll;
a support member comprising: a rotation shaft that rotatably supports the roll support member; a support portion that supports the rotation shaft; and a cylindrical portion that extends in the first direction and through which the guide member is inserted;
a cam shaft; a first eccentric cam that rotates around the cam shaft; a first stopper that comes into contact with the guide member by appearing in the cylindrical portion according to a rotational position of the first eccentric cam; A second eccentric cam that rotates about an axis in synchronization with the first eccentric cam, and a guide that appears in the tubular portion in accordance with the rotational position of the second eccentric cam in synchronization with the first stopper. and a second stopper abutting against the member, wherein the support member is abutted against the guide member by the rotation of the first eccentric cam and the second eccentric cam. a fixing portion that is non-slidably fixed to the guide member,
The tubular portion includes a first portion extending in one side of the first direction from the support portion, and a second portion extending in the other side of the first direction from the support portion. ,
The first portion is provided with a first hole that opens to the inner peripheral surface and allows the first stopper to appear in the tubular portion,
The second portion is provided with a second hole that opens on the inner peripheral surface and allows the second stopper to appear in the tubular portion.
Media support device. The fixed portion includes a first arm having one end connected to the first eccentric cam, a second arm having one end connected to the second eccentric cam, and the other end of the first arm and the second arm. and a lever that rotates the first eccentric cam and the second eccentric cam, and a connecting portion that connects the other end,
The support member includes a thick portion provided at a central portion in the first direction of the outer peripheral surface of the cylindrical portion and protruding radially outward from the cylindrical portion,
The distance in the first direction between the first arm and the second arm corresponds to the width of the thick portion in the first direction. and the second arm respectively rotate along both side surfaces of the thick portion in the first direction,
The media support device according to claim 3 . The first stopper and the second stopper are made of an elastic material,
5. The media support device according to claim 3 or 4 . The first arm and the second arm have a shape following the outer surface of the support member, and are configured to follow the outer surface of the support member when the support member is fixed to the guide member. ing,
The media support device according to claim 4 . a media supply device including the media support device according to any one of claims 1 to 6 , and supplying the media from the roll supported by the media support device;
a print head that forms an image on the media supplied from the media supply device;
printer. a printhead for forming an image on media;
A take-up device comprising the media support device according to any one of claims 1 to 6 , wherein the media on which an image is formed by the print head is taken up by the media support device to form the roll; is equipped with
printer.

Images