JP2016064548A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an adhesive of an adhesive layer of a printing medium from being accumulated at the bottom of a protrusion provided on a surface with which the printing medium is brought into contact in a printer.SOLUTION: In an external case 2 of a printer 1 for label printing, roundness is formed at the bottom of a plurality of ribs Ra, Rb, R provided on a surface which is brought into contact with a label continuous body P. The cross-sectional shape of the plurality of ribs Ra, Rb, R is formed into the shape of becoming gradually wider from the tip of the ribs Ra, Rb, R to the bottom. In these cases, an adhesive of the label continuous body P can be prevented from being accumulated at the bottom of each rib Ra, Rb, R. Also, the adhesive of the label continuous body P accumulated at the bottom of each rib Ra can be easily removed.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a printer and, for example, to a printer that prints desired information such as characters, symbols, figures, or barcodes on a label continuum.

  The printer examined by the present inventor is, for example, when transporting the label continuum by rotating the platen roller with one end of the roll of the label continuum sandwiched between the thermal head and the platen roller. This is a label printing printer for printing desired information on a label.

  This printer is described in, for example, Patent Document 1, and a platen roller is provided in a rotatable state at an open end of an opening / closing cover portion of the printer, and a thermal is provided at a position facing the platen roller when the opening / closing cover portion is closed. A printer provided with a head is disclosed.

JP 2008-62597 A

  Incidentally, a plurality of protrusions are formed on the surface of the printer where the label continuum contacts. The plurality of protrusions support the label continuous body in a state where the contact area with the label continuous body is reduced, but the label continuous body adhesive is formed at the corner where the side surface of the protrusion intersects the guide surface. There is a problem that the glue of the layer tends to accumulate, and if the glue accumulates at the corners, it becomes dirty due to the adhesiveness of the glue, and it is difficult to remove dirt because the glue is present at the corners.

  The present invention has been made from the above-described technical background, and makes it difficult for the adhesive of the adhesive layer of the print medium to accumulate at the base of the protrusion provided on the surface of the printer that contacts the print medium. The purpose is to provide technology that can be used.

In order to solve the above-described problem, a printer according to the first aspect of the present invention includes a print medium storage unit that can store a print medium having an adhesive layer inside a housing, and a transport roller that transports the print medium. A print head portion that is provided facing the transport roller inside the casing and performs printing on the print medium, and a surface that contacts the print medium inside the casing A protruding protrusion is formed, and a roundness is formed at the intersection of the side surface of the protrusion and the installation surface.
A printer according to a second aspect of the present invention is the printer according to the first aspect, wherein the protrusion is a guide surface of a guide portion that guides the print medium while being in contact with an end surface in the width direction of the print medium, or It is formed in at least one of the conveyance paths which oppose the said adhesive layer when conveying a printing medium.
According to a third aspect of the present invention, in the printer according to the second aspect, the protrusion formed on the guide surface extends in a direction in which the print medium is accommodated in the print medium accommodating portion. It is formed in a state.
According to a fourth aspect of the present invention, there is provided a printer according to a fourth aspect of the present invention, wherein a print medium storage unit that can store a print medium having an adhesive layer inside the housing, a transport roller that transports the print medium, and the interior of the housing And a print head portion that is provided facing the transport roller and performs printing on the print medium, and a protrusion that protrudes from the surface is formed on a surface that contacts the print medium inside the housing. The protrusion is formed in a cross-sectional shape that becomes wider from the protruding end toward the root.
A printer according to a fifth aspect of the present invention is the printer according to the fourth aspect, wherein the protrusion is a guide surface of a guide portion that guides the print medium while being in contact with an end surface in the width direction of the print medium. It is formed in at least one of the conveyance paths which convey a printing medium.
According to a sixth aspect of the present invention, in the printer according to the fifth aspect, the protrusion formed on the guide surface extends along the direction in which the print medium is accommodated in the print medium accommodating portion. It is formed in a state.
A printer according to a seventh aspect of the present invention is the printer according to any one of the fourth to sixth aspects, wherein the protrusion is formed on a surface facing the adhesive layer of the print medium. And a second protrusion formed on the guide surface of the guide portion that guides the print medium in a state of being in contact with the widthwise end surface of the print medium, and the second protrusion The angle of the projecting end of the first projecting portion is larger than the angle of the projecting end of the first projecting portion.
The printer according to an eighth aspect of the present invention is the printer according to any one of the fourth to seventh aspects, wherein the protrusion is further rounded at the intersection of the side surface of the protrusion and the installation surface. Is formed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to make it difficult for the paste of the adhesive layer of a printing medium to accumulate at the base of the protrusion provided in the surface which a printing medium contacts inside a printer.

1A is an overall perspective view of a printer according to an embodiment of the present invention in a normal issue state, and FIG. 1B is an overall perspective view of a release issue state of the printer of FIG. It is a whole perspective view which shows the external appearance of the printer of FIG. 1, and a label continuous body in the open state of an opening-and-closing cover part. 1A is a schematic configuration diagram viewed from the side surface of the printer at the time of normal issuance in FIG. 1A, and FIG. 1B is a schematic configuration diagram viewed from the side surface of the printer at the time of issuance of peeling in FIG. is there. It is the perspective view which looked at the opening-and-closing cover part from the gear side. It is an expansion perspective view of the protrusion head part of the opening-and-closing cover part of FIG. FIG. 6 is a side view of the opening / closing cover part of FIG. 5. It is the perspective view which looked at the opening-and-closing cover part from the paper storage part side. It is a perspective view of the principal part of an opening-and-closing cover part and a conveyance board. It is a perspective view of the conveyance board which opposes the 1st surface of the protrusion head of an opening-and-closing cover part at the time of closing of an opening-and-closing cover part. It is the perspective view which looked at the opening-and-closing cover part and the conveyance board from the lower side. It is the perspective view which looked at the opening-and-closing cover part, the conveyance board, and the paper guide mechanism part from the downward side. It is sectional drawing of the rib formed in the surface which a label continuous body contact | connects inside a printer. (A)-(c) is sectional drawing of the rib formed in the surface which contacts a label continuous body in the printer which concerns on one embodiment of this invention. FIG. 2 is a plan view of a guide surface of a guide plate installed in a paper storage unit of the printer of FIG. 1. It is sectional drawing of the rib formed in the surface which a label continuous body contact | connects inside the printer which this inventor examined.

  Hereinafter, an embodiment as an example of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted. The terms in the embodiment will be briefly described as follows.

  “Feed” refers to an operation for conveying a continuous label body (printing medium) for printing, and “feed direction (printing conveyance direction)” refers to a direction for conveying the continuous label body for printing, specifically, continuous labeling. The direction in which the body is sent from the paper supply unit to the thermal head. Back feed refers to the operation of printing the desired information on the desired label of the label continuum, then feeding the label continuum in the direction opposite to the feed direction and returning the other labels to the print start position. The feed direction refers to the direction in which the label continuum is transported for backfeeding, specifically the direction in which the label continuum is fed from the thermal head side to the paper supply unit side.

  Peeling is issued when a continuous label (label with a mount) in which a plurality of labels are temporarily attached to a long belt-like mount at a predetermined interval is used as a continuous label. The normal issue is a method of issuing from the printer without removing the label from the mount. Normal issuance includes continuous issuance and non-sepa (registered trademark) issuance. In the case of a label with a mount, continuous issuance in which a plurality of labels are continuously issued without being peeled off from the mount is applied. In the case of a continuous label (a label without a mount) that is transported in a state where there is no mount and the adhesive layer on one side is exposed, non-separator issuance that issues labels one by one is applied.

  1A is an overall perspective view of the printer according to the present embodiment in a normal issue state, FIG. 1B is an overall perspective view of the printer shown in FIG. 1A, and FIG. FIG. 2 is an overall perspective view showing the external appearance of the printer of FIG. 1 and the label continuum in the open state.

  As shown in FIG. 1, the printer 1 of the present embodiment is, for example, a portable label printer formed in a flat rectangular parallelepiped shape. It has a dual-type configuration that can be switched between normal issue and issue without peeling. Although the printer 1 can be used (sideways) with the issue port side facing upward, a belt hook (not shown) provided on the bottom surface of the printer 1 is used as the operator's belt. It can also be used (vertically used) with the issue port side facing sideways by hooking or by attaching a shoulder belt (not shown) and hanging it over the shoulder of the operator.

  As a print medium of the printer 1, for example, a label continuum P (a label without a mount) that is transported in a state where there is no mount and the adhesive layer is exposed is used as shown in FIG. In this case, a position detection mark (not shown) indicating the position of the label is formed on the adhesive layer side of the label without a mount at every predetermined interval along the longitudinal direction. In addition, on the surface of the label without mount (the back side of the surface on which the adhesive layer is formed, the printing surface), there is a thermosensitive coloring layer that develops a specific color (black, red, etc.) when it reaches a predetermined temperature range. Is formed.

  However, the print medium is not limited to the above-described one, and for example, a continuous label body having a long strip-shaped mount and a plurality of labels temporarily attached at predetermined intervals along the longitudinal direction thereof. (Label with mount) may be used. In this case, the label application surface of the mount is coated with a release agent such as silicone so that the label can be easily released. In addition, position detection marks (not shown) are formed on the back side of the label sticking surface of the mount so as to indicate the label positions at predetermined intervals along the longitudinal direction. The thermosensitive coloring layer described above is formed on the surface (printing surface) of the label. In addition, for example, a continuous sheet (a label without a mount) without a mount and an adhesive layer may be used, and not only papers but also a film (a label without a mount) that can be printed by a thermal head is used. Also good. In the case of a continuous sheet or film, a position detection mark can be provided.

  The printer 1 includes an outer case 2, an opening / closing cover portion 3, a peeling unit portion 4, a paper storage portion (print medium storage portion) 6 (see FIG. 2), and a paper guide mechanism portion 7 (see FIG. 2). I have.

  The outer case 2 is an external housing that forms a part of the outer shape of the printer 1, and includes a main body case 2a and a front cover portion 2b. The main body case 2a is formed of, for example, a plastic box-like body having an opening formed on one surface. Further, the battery cover portion Cb is pivotally supported on one side surface of the main body case 2a so as to be opened and closed. On the other hand, the front cover portion 2b is formed of, for example, a plastic lid formed so as to partially cover the opening of the main body case 2a, and is screwed to the main body case 2a. On the surface of the front cover portion 2b, a display portion Dp, an operation button Bc, a power button Bv, a cover open button (release member) Bp, a pair of release lever portions Lc and Lc, and a cutter Ct are mounted. ing. The display unit Dp is, for example, an LCD (Liquid Crystal Display) that displays operation commands, messages, and the like. The operation button Bc is a button for operating the operation and setting of the printer 1, and the power button Bv is a button for turning on / off the power of the printer 1. Between the front cover portion 2b and the opening / closing cover portion 3, an issuing port for the label continuous body P after printing is formed.

  The open / close cover unit 3 is an open / close cover for the paper storage unit 6, and one end in the longitudinal direction of the open / close cover unit 3 (open end: the central side in the longitudinal direction of the external case 2) is separated from and approaches the external case 2. The other end portion in the longitudinal direction of the opening / closing cover portion 3 is pivotally supported by the opening / closing support shaft at the one end portion in the longitudinal direction of the outer case 2 while being movable in the direction. The opening / closing cover 3 is urged in the opening direction (the direction in which the opening end of the opening / closing cover 3 is separated from the outer case 2) by a torsion spring disposed on the opening / closing support shaft at the other end in the longitudinal direction. Yes.

  A platen roller (conveyance roller) 10 is pivotally supported at the open end of the opening / closing cover 3 in a state of being rotatable in the forward and reverse directions. The platen roller 10 is a conveying unit that conveys the label continuous body P, and is installed in a state of extending along the width direction (short direction) of the label continuous body P. The platen roller 10 is made of, for example, a non-adhesive material such as a resin containing silicone or silicone rubber so that the adhesive of the label continuum P does not stick. A gear 10 b is connected to one end of the platen shaft 10 a of the platen roller 10. The gear 10b is engaged with a gear or the like (not shown) installed in the outer case 2 when the open / close cover portion 3 is closed, and mechanically connected to a stepping motor (not shown) for driving the roller via the gear or the like. Connected to.

  A peeling pin 11 is installed along the platen roller 10 in the vicinity of the platen roller 10 on the open end side of the opening / closing cover 3. The peeling pin 11 is a peeling member that peels the label from the mount when a label with a mount is used as the label continuum P, and both end portions in the longitudinal direction are pivotally supported by the opening / closing cover portion 3.

  Sensors 12 (12a, 12b) are installed on the surface of the open / close cover portion 3 on the open end side where the label continuum P faces. The sensor 12a is, for example, a sensor that detects the presence or absence of the label continuum P, and includes a transmissive optical sensor or the like. On the other hand, the sensor 12b is, for example, a sensor that detects a label position (the position detection mark or the like), and is configured by a reflective optical sensor or the like.

  The peeling unit unit 4 has a function of separating the transport path between the backing sheet and the label by peeling the label from the backing sheet when the peeling is issued in the case of using the label with the mounting as the label continuum P, and is supported by the peeling unit unit 4. The nip roller 4 a is installed in a state where it can be moved to a normal issue position inside the printer 1 and a peeling issue position outside the printer 1. The nip roller 4a is a member that is disposed so as to face the platen roller 10 at the time of release issuance, and is a member that sandwiches and conveys the mount inserted between the nip roller 4a and the platen roller 10 between the nip roller 4a and the platen roller 10. The nip roller 4 a is driven to rotate following the rotation of the platen roller 10.

  As shown in FIG. 2, the sheet storage unit 6 is a space for storing the roll-shaped label continuous body P, and a pair of guide plates (guide units) 7 a of the sheet guide mechanism unit 7 is installed therein. Yes. The paper guide mechanism unit 7 is a mechanism unit that supports and guides the label continuous body P according to its width. The pair of guide plates 7a supports the roll-shaped label continuous body P in a rotatable state while being in contact with both end surfaces in the width direction (axial direction) of the roll-shaped continuous label P, and conveys the label continuous body P. Is a member that can be moved along the width direction of the label continuum P so that the position can be changed according to the width of the label continuum P.

  A plurality of ribs Ra projecting from the guide surface are formed at predetermined intervals along the longitudinal direction of the printer 1 on the guide surface in contact with the label continuum P in each of the pair of guide plates 7a. Each rib Ra is formed in a shape extending along a direction in which the label continuous body P is accommodated in the paper accommodating portion 6 (a direction from the opening surface of the main body case 2a toward the bottom surface facing the opening surface). .

  Next, the internal structure of the printer 1 will be described with reference to FIG. 3A is a schematic configuration diagram of the printer at the time of normal issuance in FIG. 1A, and FIG. 3B is a schematic configuration diagram of the printer at the time of issuance of peeling in FIG. 1B.

  Inside the outer case 2, a head bracket 27, a thermal head (printing head portion) 28, a coil spring 29, a peeling unit portion 4, and a transport plate 30 are adjacent to each other on the opposite side of the paper storage portion 6 and the platen roller 10. Installed.

  The head bracket 27 is a member for holding the thermal head 28 and holding the open / close cover portion 3 in a closed state, and is installed in a swingable manner on the opposite side of the platen roller 10 when the open / close cover portion 3 is closed. . The opening / closing cover portion 3 is held by the head bracket 27 by fitting the platen shaft 10 a of the platen roller 10 into a groove formed in the head bracket 27. A pressing portion 27 a is integrally formed with the head bracket 27. The pressing portion 27a is arranged at a position (directly below) facing the cover open button Bp. When the cover open button Bp is pressed, the pressing portion 27a is also pressed and swings, and the opening / closing cover portion 3 by the head bracket 27 is moved. The holding state is released. When the holding state of the opening / closing cover 3 is released, the opening / closing cover 3 is automatically opened by the urging force of the torsion spring 31 disposed on the opening / closing support shaft 3a on the other end in the longitudinal direction. It has become.

  The thermal head 28 is a printing unit that prints information such as characters, symbols, figures, or barcodes on the label continuum P. The thermal head 28 faces the platen roller 10 when the opening / closing cover unit 3 is closed. It is mounted on the head bracket 27 via the circuit board 32 in a state where the print surface 28 is directed to the paper route. On the printing surface of the thermal head 28, a plurality of heating resistors (heating elements) that generate heat when energized are arranged side by side along the width direction (short direction) of the label continuum P. The circuit board 32 is a wiring board that transmits a print signal to the thermal head 28.

  The coil spring 29 is a member that urges the head bracket 27 and the thermal head 28 toward the platen roller 10 when the open / close cover 3 is closed, and is installed on the back side of the head bracket 27 (the back side of the mounting surface of the circuit board 32). Has been. The head bracket 27 is pressed against the platen roller 10 by the biasing force of the coil spring 29. As a result, the thermal head 28 is pressed against the platen roller 10 via the label continuum P, and the platen shaft 10a fitted in the groove of the head bracket 27 is pressed to hold the opening / closing cover part 3 by the head bracket 27. Is maintained.

  The transport plate 30 is a member that forms a sheet passing route for transporting the sheet-like label continuous body P (see FIG. 2) sent out from the sheet storage unit 6 toward the platen roller 10 (the transport plate 30). Will be described later).

  In such a printer 1, in order to print information on the label of the label continuum P, one end of the roll-shaped label continuum P in the paper storage unit 6 is pulled out, and between the thermal head 28 and the platen roller 10. When the platen roller 10 is rotated in the sandwiched state and the continuous label P is conveyed in the feed direction, the print timing is determined based on the timing signal detected by the sensor 12, and the print signal transmitted to the thermal head 28 is converted. Based on this, the heating resistor of the thermal head 28 is heated to print desired information on the label of the label continuum P. In the feed process and the back feed process, the adhesive layer of the sheet-like label continuous body P faces the open end side of the open / close cover part 3 and the platen roller 10 side in a bare state.

  Next, the structure of the opening / closing cover part 3 will be described with reference to FIGS. 4 is a perspective view of the opening / closing cover portion as viewed from the gear 10b side, FIG. 5 is an enlarged perspective view of a protruding head of the opening / closing cover portion of FIG. 4, FIG. 6 is a side view of the opening / closing cover portion of FIG. It is the perspective view which looked at the opening-and-closing cover part from the paper storage part side.

  On the back side of the open end portion of the opening / closing cover portion 3, an inner cover portion 3b is attached in a detachable state with screws N. The inner cover portion 3b is integrally formed with a protruding head portion 3c that protrudes in a direction away from the platen roller 10 at the open end of the open / close cover portion 3. The protruding head 3c is formed so that its thickness gradually becomes narrower in the direction away from the platen roller 10. On the platen roller 10 side of the protruding head 3c, holding portions 3d are integrally formed on both ends in the longitudinal direction of the platen roller 10. The holding portion 3d is bent so as to surround a part of the outer periphery of the platen shaft 10a. The holding part 3d holds the platen shaft 10a (that is, the platen roller 10) in a rotatable state. As described above, the member for holding the platen shaft 10a (the platen roller 10) is formed integrally with the protruding head 3c, so that the component for holding the platen shaft 10a (the platen roller 10) is provided separately. Since the number of points can be reduced, the printer 1 can be reduced in size, and the cost of the printer 1 can be reduced.

  The protruding head 3c has a first surface S1, a second surface S2 located on the back side thereof, and a third surface (connecting portion) S3 located at the tip of the protruding head 3c. Yes. The first surface S1 is an inner wall surface that forms a sheet passing route (conveying path at the time of feeding and back feeding) of the sheet-like label continuum P, and the sheet-like label continuum when the opening / closing cover portion 3 is closed. It is an inner wall surface facing the P adhesive layer. The sensors 12a and 12b described above are provided on the first surface S1. Further, an overhang portion 3e is formed integrally with the protruding head 3c at the end on the platen roller 10 side on the first surface S1. The projecting portion 3e is formed in a state of projecting in a direction intersecting the first surface S1 so as to face a part of the outer periphery of the platen roller 10 from end to end in the longitudinal direction of the platen roller 10. Yes.

  The second surface S2 is an inner wall surface that faces the paper storage unit 6 (that is, the outer periphery of the roll-shaped label continuum P) when the opening / closing cover unit 3 is closed, for example, the outer periphery of the roll-shaped label continuum P. It is formed in a curved shape to match. The third surface S3 is an inner wall surface that is provided so as to intersect the first surface S1 and the second surface S2 and connects the first surface S1 and the second surface S2. The third surface S3 is formed in a substantially flat shape, for example. However, the shape of the third surface S3 is not limited to a flat shape, and may be formed in a curved shape, for example.

  A direction intersecting the longitudinal direction of the platen roller 10 on the surface of the protruding head 3c (the surface of the overhang portion 3e, the first surface S1, the second surface S2, and the third surface S3). A plurality of ribs R are provided at predetermined intervals along the longitudinal direction of the platen roller 10. Each rib R includes a first rib portion (first protrusion) R1, a second rib portion (second protrusion) R2, a third rib portion (third protrusion) R3, a fourth rib It has a rib part (fourth protrusion) R4 and a fifth rib part (fifth protrusion) R5.

  The first rib portion R1 of the rib R is formed so as to protrude from the surface of the overhang portion 3e when viewed from the side surface of the opening / closing cover portion 3. When viewed toward the first surface S1, the first rib portion R1 extends in a direction intersecting the longitudinal direction of the platen roller 10, and the end on the platen roller 10 side in the extending direction. While the portion terminates in a state of being sharpened toward the tip, the first surface S1 side is connected to the second rib portion R2 in the extending direction of the first rib portion R1.

  The first rib portion R1 has a function of peeling the label continuum P from the platen roller 10 in the backfeed process (hereinafter referred to as a label peeling function), and the height of the first rib portion R1 and the first rib portion R1. The tip shape of the rib portion R1 on the platen roller 10 side is set from the viewpoint of the label peeling function. Here, when there is no first rib portion R1, in the backfeed process, the sheet-like continuous label P is slightly attached to the outer periphery of the platen roller 10 from the position of the thermal head 28 toward the protruding head 3c. As a result of the feeding, it may be caught in the gap between the platen roller 10 and the protruding head 3c, and may stick to the end of the protruding head 3c on the platen roller 10 side to cause jamming. On the other hand, in the present embodiment, the continuous label P is sent from the position of the thermal head 28 to the protruding head 3c side in a state of being slightly adhered to the outer periphery of the platen roller 10 in the backfeed process. On the way, the label continuous body P can be peeled off from the outer periphery of the platen roller 10 by the first rib portion R1. In this case, the sheet-like label continuous body P can be peeled off from the outer periphery of the platen roller 10 on the upstream side in the backfeed direction (downstream side in the feed direction) as compared with the case where the first rib portion R1 is not provided. For this reason, it is possible to prevent the sheet-like label continuous body P from being caught in the gap between the platen roller 10 and the protruding head 3c or sticking to the end of the protruding head 3c on the platen roller 10 side. Therefore, it is possible to prevent the jam from occurring during the back feed process.

  Further, the above-described overhang portions 3e are provided on both sides in the width direction (short direction) of the first rib portion R1. Here, when only the first rib portion R1 is provided without providing the overhang portion 3e, the height of the first rib portion R1 is increased in order to achieve the label peeling function, and the first rib portion R1. As a result, the mechanical strength of the first rib portion R1 may decrease and the first rib portion R1 may be deformed. On the other hand, in the present embodiment, by providing the overhanging portion 3e, the height of the first rib portion R1 is reduced as compared with the case where there is no overhanging portion 3e (the aspect ratio is lowered). Therefore, the mechanical strength of the first rib portion R1 itself can be increased. Further, by providing the overhanging portion 3e so as to sandwich the first rib portion R1 on both sides in the width direction in the leg portion of the first rib portion R1, the mechanical strength of the first rib portion R1 is increased. Can do. That is, the overhanging portion 3e reduces the aspect ratio of the first rib portion R1 and holds both sides in the width direction of the leg portion of the first rib portion R1, thereby mechanically moving the first rib portion R1. It has a function as a reinforcing member that increases strength. Thereby, the deformation of the first rib portion R1 can be prevented.

  The second rib portion R2 of the rib R is formed in a state of protruding from the first surface S1 when viewed from the side surface of the opening / closing cover portion 3. The second rib portion R2 is disposed in the vicinity of the overhang portion 3e. The second rib portion R2 also extends in a direction intersecting the longitudinal direction of the platen roller 10 when viewed toward the first surface S1, and one end portion in the extending direction is as described above. Are connected to the first rib portion R1, but the other end terminates between the platen roller 10 and the third surface S3.

  The third rib portion R3 of the rib R is formed in a state of protruding from the first surface S1 when viewed from the side surface of the opening / closing cover portion 3. The third rib portion R3 also extends in a direction intersecting the longitudinal direction of the platen roller 10 when viewed toward the first surface S1. The third rib portion R3 is formed on the extension line of the second rib portion R2, but is not connected to the second rib portion R2, and is a third portion separated from the second rib portion R2. It is arrange | positioned in the vicinity of this surface S3. That is, there is a region without the rib R between the second rib portion R2 and the third rib portion R3, and the first surface S1 of the protruding head 3c of the opening / closing cover portion 3 The rib R extending along the conveyance direction is divided between the platen roller 10 and the third surface S3.

  Here, in the back feed process, the sheet-like label continuous body P bends in a direction approaching the first surface S1 of the protruding head 3c, but the first rib portion R1 and the first rib S1 are formed on the first surface S1. By providing the second rib portion R2 and the third rib portion R3, the contact portion of the adhesive layer of the sheet-like label continuous body P can be changed to the first rib portion R1, the second rib portion R2, and the third rib portion R3. It can be limited to the rib portion R3. For this reason, since it can suppress or prevent that the adhesive layer of the sheet-like label continuous body P sticks to 1st surface S1 in a back feed process, generation | occurrence | production of the jam resulting from the sticking is suppressed. Or it can be prevented. Further, in the back feed process, the sheet-like label continuous body P can be smoothly transported, and the power for transporting the label continuous body P can be reduced, so that the battery consumption of the printer 1 can be reduced. . In particular, in the present embodiment, the second rib portion R2 and the third rib portion R3 are divided in each of the plurality of ribs R, so that the sheet-like label continuous body P is formed in the backfeed process. The area where the pressure-sensitive adhesive layer contacts the second rib portion R2 and the third rib portion R3 can also be reduced. For this reason, the conveyance property of the label continuous body P in a back feed process can further be improved.

  The fourth rib portion R4 of the rib R is formed in a state of protruding from the third surface S3 of the distal end surface of the protruding head 3c when viewed from the side surface of the opening / closing cover portion 3. The fourth rib portion R4 also extends along a direction intersecting the longitudinal direction of the platen roller 10 when viewed toward the third surface S3, and one end in the extending direction is the first surface. The other rib is connected to the third rib portion R3 of S1, and the other end is connected to the fifth rib portion R5 of the second surface S2. The projection length (projection height) of the fourth rib portion R4 is longer than the projection lengths of the first rib portion R1, the second rib portion R2, the third rib portion R3, and the fifth rib portion R5. (High) is formed. Thereby, the sheet-like label continuous body P at the time of a feed process is conveyed in the state supported by two contact (2 places) with the platen roller 10 and 4th rib part R4.

  At the time of this feeding process, the roll-shaped continuous label P of the paper storage unit 6 is drawn out into a sheet shape and passes through the fourth rib portion R4 at the tip of the protruding head 3c, and the thermal head 28 and the platen roller 10. Sent between. At this time, the leading end of the protruding head 3c of the opening / closing cover part 3 protrudes, so that the sheet-like label continuous body P can be turned into the roll-shaped label continuous body regardless of the diameter of the roll-shaped label continuous body P. P can be peeled well from P.

  Further, at the time of the feeding step, the label continuous body P is sent in a state in which the pressure-sensitive adhesive layer is in contact with the fourth rib portion R4 of the tip (third surface S3) of the protruding head 3c. That is, by providing the fourth rib portion R4, the place where the pressure-sensitive adhesive layer of the label continuum P contacts on the third surface S3 side can be limited to the fourth rib portion R4. For this reason, it is possible to reduce the contact resistance that occurs when the pressure-sensitive adhesive layer of the sheet-like label continuum P is in contact with the third surface S3 during the feeding step, so that it is possible to suppress printing disturbance caused by the contact or Can be prevented. Moreover, since it can suppress or prevent that the adhesive layer of the sheet-like label continuous body P adheres to 3rd surface S3 at the time of a feed process, generation | occurrence | production of the jam resulting from the adhesion is suppressed or Can be prevented. In addition, normally, the adhesive layer of the sheet-like label continuous body P does not contact the first surface S1 side during the feeding step, but the adhesive layer of the sheet-like continuous label body P is first changed depending on the operation situation. Even when approaching the surface S1, the contact location of the adhesive layer can be limited to the first rib portion R1, the second rib portion R2, and the third rib portion R3. For this reason, since it can suppress or prevent that the adhesive layer of the sheet-like label continuous body P sticks to 1st surface S1 at the time of a feed process, generation | occurrence | production of the jam resulting from the sticking is suppressed. Or it can be prevented. As a result, the sheet-like label continuous body P can be transported smoothly, and the power for transporting the label continuous body P can be reduced, so that the battery consumption of the printer 1 can be reduced.

  The fifth rib portion R5 of the rib R is formed in a state of protruding from the second surface S2 when viewed from the side surface of the opening / closing cover portion 3. The projection length (projection height) of the fifth rib portion R5 is lower than the projection length (projection height) of the first rib portion R1, the second rib portion R2, and the third rib portion R3. The fifth rib portion R5 extends along the rotation direction of the roll-shaped label continuous body P when viewed toward the second surface S2. By providing the fifth rib portion R5, when the roll-shaped label continuous body P rolls in the paper storage portion 6, the outer periphery of the roll-shaped continuous label body P contacts on the second surface S2 side. Since the place to perform can be substantially limited to the fifth rib portion R5, the frictional resistance when the roll-shaped label continuous body P rotates can be reduced.

  Next, the structure of the conveyance plate 30 of the printer 1 will be described with reference to FIGS. FIG. 8 is a perspective view of the main part of the opening / closing cover part and the conveying plate, FIG. 9 is a perspective view of the conveying plate facing the first surface of the protruding head of the opening / closing cover part when the opening / closing cover part is closed, and FIG. FIG. 11 is a perspective view of the cover portion and the transport plate as viewed from below, and FIG. 11 is a perspective view of the open / close cover portion, the transport plate and the paper guide mechanism as viewed from below. In FIG. 8, the transport plate 30 is shown through to show the facing relationship between the transport plate 30 and the protruding head 3c.

  When the opening / closing cover part 3 is closed, the conveying plate 30 is secured to the opposite side of the first surface S1 of the projecting head 3c of the opening / closing cover part 3 in a detachable state by screws or the like. In the transport plate 30, a plurality of ribs Rb extending in a direction intersecting the longitudinal direction of the platen roller 10 are formed on the surface of the protruding head 3 c facing the first surface S <b> 1. It is provided at predetermined intervals along the direction. Each rib Rb of the transport plate 30 is provided directly opposite each rib R formed on the first surface S1 of the protruding head 3c on the opposite side of the transport plate 30. Thereby, since the contact positions of the ribs R and Rb with respect to the label continuum P can be made the same, the positions of the rib marks formed on the label continuum P by the contact of the ribs R and Rb can be made the same. . For this reason, compared with the case where the opposing position of the rib R and the rib Rb is shifted, the number of rib trace lines left in the label continuum P can be reduced.

  In the center of the width direction (longitudinal direction of the platen roller 10) of the lower side portion (the bottom surface side in the outer case 2) of the transport plate 30 is partially directed from the lower side portion of the transport plate 30 toward the bottom surface in the outer case 2. A support piece 30a is formed extending in the direction. As shown in FIGS. 10 and 11, a pinion gear (gear member) 7 b is pivotally supported on the bottom surface of the tip of the support piece 30 a so as to be rotatable along the bottom surface in the outer case 2. On the other hand, as shown in FIG. 11, a pair of rack portions 7c and 7c extending in a strip shape toward each other are provided at the bottom of each of the pair of guide plates 7a and 7a. The pair of rack portions 7c and 7c are arranged so as to sandwich the pinion gear 7b in a state where a plurality of irregularities formed on the respective long sides are engaged with the irregularities of the pinion gear 7b described above. Thereby, when one guide plate 7a is moved in one direction in the width direction of the roll-shaped label continuous body P, the other guide plate 7a is moved in the one direction by the action of the pinion gear 7b and the rack portion 7c. Moves in the opposite direction. As described above, by providing the pinion gear 7 b on the support piece 30 a below the transport plate 30, it is possible to reduce the size of the printer 1 compared to the case where the pinion gear 7 b is provided on the bottom surface in the outer case 2.

  Next, the cross-sectional shapes of the above-described ribs Ra, Rb, and R will be described with reference to FIGS. FIG. 12 is a cross-sectional view of a rib formed on the surface of the printer that contacts the label continuum, and FIGS. 13A to 13C are formed on the surface that contacts the label continuum in the printer of this embodiment. 14 is a plan view of a guide surface of a guide plate installed in the paper accommodating portion of the printer of FIG. 1, and FIG. 15 is a surface on which the label continuum is in contact with the inside of the printer examined by the present inventor. It is sectional drawing of the formed rib. 12 and 13 show a cross section that intersects the extending direction of the ribs.

  As shown in FIG. 15, in the rib Rx formed on the surface with which the label continuum P is in contact with the inside of the printer examined by the present inventors, the intersection of the side surface S4 of the rib Rx and the installation surface S5 of the rib Rx is formed. It is formed at a substantially right angle. In this case, the glue G of the adhesive layer of the label continuum P is easily collected at the corners of the ribs Rx. If the glue G accumulates at the corners, the glue G becomes dirty and the glue G is adhered to the corners. There is a problem that dirt is difficult to remove.

  Therefore, in the present embodiment, as shown in FIG. 12, the side surface S4 of each rib Ra, Rb, R (R1 to R5) and the installation surface S5 of each rib Ra, Rb, R (R1 to R5) Roundness (rounded corners) was formed at the intersection. That is, the ribs Ra, Rb, R are formed to have the same width from the tip (projecting end) toward the root, but the side surfaces S4 of the ribs Ra, Rb, R and the ribs Ra, Rb, R are installed. The intersecting portion with the surface S5 is not formed at a right angle, and the side surface S4 of the rib Ra, Rb, R is formed at the intersecting portion of the side surface S4 of the rib Ra, Rb, R and the installation surface S5 of the rib Ra, Rb, R. A curved surface is formed that bends so that the width of the ribs Ra, Rb, and R becomes wider toward the installation surface S5. FIG. 12 shows a cross section that intersects the extending direction of the ribs Ra, Rb, and R. However, the cross section cut along the extending direction of the ribs Ra, Rb, and R also includes the ribs Ra, Rb, and R. Roundness is formed at the intersection of the side surface S4 and the installation surface S5 of the ribs Ra, Rb, R. In this way, the side surface S4 of the ribs Ra, Rb, R and the installation surface S5 of the ribs Ra, Rb, R are rounded at the intersection, so that the label continuum P is formed at the base of the ribs Ra, Rb, R. It is possible to prevent the glue from accumulating. Moreover, even if the glue of the label continuous body P accumulates at the base of the ribs Ra, Rb, R, it can be easily removed. Such a rib (protrusion) having a rounded base is formed on at least one of the guide surface of the guide plate 7a or the conveyance path facing the adhesive layer of the label continuum P when the label continuum P is conveyed. ing.

  As another example, as shown in FIGS. 13A and 13B, the cross-sectional shape of the rib Ra formed on the guide surface of the guide plate 7a and abutting on the side surface of the roll-shaped label continuous body P is as follows. You may form in the shape which becomes wide toward the base from the front-end | tip of rib Ra. That is, the external angle θa formed by the side surface S4 of the rib Ra and the installation surface S5 is formed to be an obtuse angle larger than 90 degrees. In Fig.13 (a), the front-end | tip part of rib Ra is formed in the curved surface shape. In FIG. 13B, the rib Ra is formed in a flat shape so that the tip end of the rib Ra intersects the side surface (parallel to the installation surface S4). FIGS. 13A and 13B show a cross section that intersects the extending direction of the rib Ra, but the cross section cut along the extending direction of the rib Ra also extends from the tip of the rib Ra toward the root. And wider (that is, the external angle θa formed by the side surface S4 of the rib Ra and the installation surface S5 is an obtuse angle). Thus, by making the cross-sectional shape of the rib Ra of the guide plate 7a wide from the tip of the rib Ra toward the root, the angle θa of the base angle of the rib Ra can be made obtuse, Since the outer angle can be made wider than in the case of the rib Rx in FIG. 15, the paste of the label continuum P can be less likely to accumulate at the root of the rib Ra than in the case of FIG. 12. Moreover, the paste of the label continuous body P accumulated at the base of the rib Ra can be removed more easily than in the case of FIG.

  The rib (projection) having such a cross-sectional shape is formed on at least one of the guide surface of the guide plate 7a or the conveyance path facing the adhesive layer of the label continuum P when the label continuum P is conveyed. Yes. That is, the cross-sectional shape of the rib Ra is formed on the surface of the printer 1 that is in contact with the label continuum P on the bottom surface of the ribs Rb, R or the outer case 2 formed on the portion where the label continuum P contacts. It can also be applied to ribs).

  As shown in FIG.13 (c), in the rib R (R1-R5) formed in the surface of the protrusion head part 3c of the opening-and-closing cover part 3, the cross-sectional shape is from the front-end | tip of rib R (R1-R5). It is formed in a shape that becomes wider toward the root. That is, the external angle θb formed by the side surface S4 of the rib R and the installation surface S5 is formed to be an obtuse angle larger than 90 degrees. In FIG. 13C, a cross section that intersects the extending direction of the rib R is shown, but the cross section cut along the extending direction of the rib R is also rooted from the tip of the rib R (R1 to R5). It is formed in a shape that becomes wider toward the outside (that is, the external angle θb formed by the side surface S4 of the rib R and the installation surface S5 is an obtuse angle). However, in the ribs R (R1 to R5), the angle θc of the tip (projecting end) is formed to be smaller than the angle θd of the tip (projecting end) of the rib Ra, and the tip of the rib R is the rib Ra. It is sharper and sharper than the tip. Alternatively, the area in contact with the label continuum P at the tip (projection end) of the rib (first projection) R (R1 to R5) of the projection head 3c is the rib ′ (second profile) of the guide plate 7a. The protrusion Ra is formed smaller than the area in contact with the label continuum P. Thus, in the ribs R (R1 to R5) on the surface of the protruding head 3c, the contact area between the ribs R (R1 to R5) and the label continuum P can be reduced as described above. In addition to preventing the P adhesive layer from sticking, glue is accumulated at the roots of the ribs R (R1 to R5) in the same manner as the ribs Ra of the guide plate 7a in FIGS. 13 (a) and 13 (b). It is also possible to make it difficult, and the glue of the label continuum P accumulated at the base of the ribs R (R1 to R5) can be easily removed.

  On the other hand, as shown in FIG. 14, in the guide plate 7a, the label continuum P rotates as indicated by the arrow in a state where both end surfaces in the width direction of the label continuum P are in contact with the guide surface. If the tips of the ribs Ra are sharp, both end surfaces in the width direction of the label continuum P are scraped by the ribs Ra and paper dust is generated. Therefore, in the present embodiment, in the rib ′ (second projecting portion) Ra of the guide plate 7a, the angle θd of the tip (projecting end) is set to the rib (first projecting portion) of the projecting head 3c. Part) R (R1 to R5) is formed at an angle larger than the angle θc of the tip (projecting end) of R. Alternatively, the area of the rib (second protrusion) Ra that contacts the label continuous body P in the rib (second protrusion) Ra of the guide plate 7a is the tip of the rib (first protrusion) R (R1 to R5) of the protruding head 3c ( It is formed wider than the area in contact with the label continuum P at the protruding end. Thereby, the malfunction that the label continuous body P is scraped by the rib Ra of the guide plate 7a at the time of rotation of the label continuous body P in the feed process and paper dust is generated can be suppressed or prevented.

  The surface of the transport plate 30 is in contact with the surface without the adhesive layer in the label continuum P, but when a label without a mount having an adhesive layer is used as the label continuum P, the surface of the label continuum P is also adhesive. Since the layer may adhere, the adhesive of the adhesive layer may adhere to the base of the rib Rb on the surface of the transport plate 30. Therefore, as shown in FIGS. 13A and 13B, the rib Rb of the transport plate 30 is also formed in a shape that becomes wider from the tip of the rib Rb toward the root. That is, the external angle θa formed by the side surface S4 of the rib Rb and the installation surface S5 is formed to be an obtuse angle larger than 90 degrees. Thereby, like the rib Ra of the guide plate 7a of FIGS. 13A and 13B, the paste of the label continuum P can be hardly accumulated at the base of the rib Rb of the transport plate 30. Moreover, the paste of the label continuous body P collected at the base of the rib Ra of the transport plate 30 can be easily removed. Further, as shown in FIG. 13C, the rib Rb of the transport plate 30 may have a shape with a sharper tip than the rib Ra of the guide plate 7a of FIGS. 13A and 13B. As a result, the above-described problem of glue accumulation can be avoided, and rib marks can be suppressed or prevented from remaining on the surface of the label continuous body P.

  In addition, in FIGS. 13A to 13C, in addition to forming the ribs Ra, Rb, and R (R1 to R5) from the leading ends toward the roots, the same as described in FIG. The ribs Ra, Rb, Rb are further provided by rounding the intersections between the side surfaces S4 of the ribs Ra, Rb, R (R1-R5) and the installation surfaces S5 of the ribs Ra, Rb, R (R1-R5). , R (R1 to R5), the paste of the label continuum P can be made difficult to accumulate.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the embodiment disclosed in this specification is an example in all respects and is limited to the disclosed technology. It is not a thing. That is, the technical scope of the present invention should not be construed restrictively based on the description in the above-described embodiment, but should be construed according to the description of the scope of claims. All modifications are included without departing from the technical scope equivalent to the described technique and the gist of the claims.

  For example, in the above-described embodiment, the case where the present invention is applied to a combined type printer that can be used for both the normal issue and the release issue has been described. However, the present invention is not limited to this, and only the normal issue or the release is possible. It can also be applied to a printer that can only be issued.

  Further, the rib shape shown in FIG. 12 or 13 may be applied only to the rib Ra of the guide plate 7a, only the ribs Ra and R (R1 to R5), or only the ribs Ra and Rb. In this case, in the printer, the rib shape shown in FIG. 13 or 15 may be applied to the rib to which the rib shape shown in FIG. 12 is not applied. Further, in the printer, the rib shape shown in FIG. 12 or 15 may be applied to the rib to which the rib shape shown in FIG. 13 is not applied.

DESCRIPTION OF SYMBOLS 1 Printer 2 External case 3 Opening / closing cover part 3b Inner cover part 3c Protruding head 3d Holding part 3e Overhang part 6 Paper accommodating part 7 Paper guide mechanism part 7a Guide plate 10 Platen roller 27 Head bracket 28 Thermal head 29 Coil spring 30 Conveying plate P label continuum S1 first surface S2 second surface S3 third surface S4 side surface S5 installation surface Ra rib Rb rib R rib R1 first rib portion R2 second rib portion R3 third rib portion R4 second 4 rib part R5 5th rib part (theta) a- (theta) d angle

Claims (8)

A print medium accommodating portion capable of accommodating a print medium having an adhesive layer inside the housing;
A transport roller for transporting the print medium;
A print head portion provided inside the housing to face the transport roller and for printing on the print medium;
With
A protrusion that protrudes from the surface is formed on the surface in contact with the print medium inside the housing.
A printer in which a roundness is formed at an intersection between a side surface of the protrusion and an installation surface.   The protrusion is provided on at least one of a guide surface of a guide portion that guides the print medium in a state of being in contact with an end surface in the width direction of the print medium or a conveyance path that faces the adhesive layer when the print medium is conveyed. The printer according to claim 1, wherein the printer is formed.   The printer according to claim 2, wherein the protrusion formed on the guide surface is formed in a state extending in a direction in which the print medium is accommodated in the print medium accommodating portion. A print medium accommodating portion capable of accommodating a print medium having an adhesive layer inside the housing;
A transport roller for transporting the print medium;
A print head portion provided inside the housing to face the transport roller and for printing on the print medium;
With
A protrusion that protrudes from the surface is formed on the surface in contact with the print medium inside the housing.
The printer, wherein the protrusion is formed in a cross-sectional shape that becomes wider from the protruding end toward the base.   The protrusion is formed on at least one of a guide surface of a guide portion that guides the print medium or a conveyance path that conveys the print medium while being in contact with an end surface in the width direction of the print medium. The printer according to claim 4.   6. The printer according to claim 5, wherein the protrusion formed on the guide surface is formed in a state extending in a direction in which the print medium is accommodated in the print medium accommodating portion.   The protrusion includes a first protrusion formed on a surface facing the pressure-sensitive adhesive layer of the print medium, and a guide surface of a guide portion that guides the print medium in contact with the widthwise end surface of the print medium. And an angle of the projecting end of the second projecting portion is larger than an angle of the projecting end of the first projecting portion. The printer according to any one of 4 to 6.   The printer according to any one of claims 4 to 7, wherein the protrusion is further rounded at an intersection between a side surface of the protrusion and an installation surface.

Images