JP2011031488A - Label printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label printer enabled to prevent setting failures of a label paper. <P>SOLUTION: The label printer 1A includes a mounting part 3 where a label roll 20A wound with the long label paper 2A is set, a platen roller 5 which conveys the label paper 2A drawn out from the label roll 20A set to the mounting part 3, a printing head 7 which prints to a label of the label paper 2A conveyed by the platen roller 5, a first label width regulating guide 40 which is set on the upstream side in a conveyance direction of the label paper 2A to the printing head 7 and platen roller 5 to regulate a position in the width direction of the label paper 2A, and a first separation preventing guide 41 which prevents separation of the label paper 2A from the first label width regulating guide 40. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a label printer that conveys a long label sheet and prints on a label.

  In various industrial fields, including labeling of various products, labeling of products at food departments such as supermarkets, shipping slips, invoices, and parts labels at product manufacturers, etc., label printing, called label printers, is performed. The printer is active.

  As a label used in such a label printer, a label with release paper is usually used. As the label with release paper, a label roll is used in which a label paper having a plurality of label pieces attached to the surface of a long release paper is wound in a roll shape.

  A label printer that uses such a long label sheet is provided with a label guide that regulates the position in the width direction of the label sheet pulled out from the label roll (for example, see Patent Document 1).

Japanese Utility Model Publication No. 2-150254

  In the label printer, a cover is provided to be openable and closable with respect to the printer body, and the label roll is set by opening the cover. In the operation of setting the label roll, the label sheet pulled out from the label roll is placed between the label guides, and the cover is closed to set the label sheet in the correct position.

  However, in the conventional label printer, the label paper placed between the label guides may be detached from the label guide due to curling of the label paper, and may not be set at the correct position. For this reason, it is necessary to hold the label paper by hand when closing the cover, which is troublesome.

  SUMMARY An advantage of some aspects of the invention is that it provides a label printer that can prevent a defective set of label sheets.

  In order to solve the above-described problems, the present invention provides a mounting unit in which a label roll around which a long label sheet is wound is set, and a transport unit that transports the label sheet drawn from the label roll set in the mounting unit. A printing unit that prints on the label of the label sheet conveyed by the conveying unit, and upstream of the printing unit and the conveying unit in the conveyance direction of the label sheet, and regulates the position in the width direction of the label sheet The label printer includes a label width regulating unit and a detachment preventing unit that prevents the label paper from detaching from the label width regulating unit.

  In the label printer of the present invention, the label paper pulled out from the label roll set in the mounting portion is regulated in the width direction by the label width regulating means and prevented from coming off from the label width regulating means by the detachment preventing means. Is done.

  According to the label printer of the present invention, it is possible to prevent the label paper guided by the label width restricting means from being detached from the label width restricting means, and thus it is possible to prevent the label paper from being set defective. Further, it is not necessary to hold the label paper by hand when setting the label paper, and the label setting operation can be easily performed.

It is a perspective view which shows an example of the label printer of this Embodiment. It is a perspective view which shows an example of the label printer of this Embodiment. It is a perspective view which shows an example of the label printer of this Embodiment. It is a sectional side view which shows an example of an internal structure of the label printer of this Embodiment. It is a sectional side view which shows an example of an internal structure of the label printer of this Embodiment. It is a perspective view which shows an example of a guide unit. It is a perspective view which shows an example of a guide unit.

  Hereinafter, an embodiment of a label printer of the present invention will be described with reference to the drawings.

<Example of Configuration of Label Printer of this Embodiment>
1 to 3 are perspective views illustrating an example of a label printer according to the present embodiment, and FIGS. 4 and 5 are side sectional views illustrating an example of an internal configuration of the label printer according to the present embodiment.

  A label printer 1A of the present embodiment includes a label roll 20A around which a label paper 2A having a first group width shown in FIG. 1 is wound, and a label having a second group width shown in FIG. 2 wider than the width of the first group. The label roll 20B around which the paper 2B is wound can be set. As the width of the first group, a label width of about 30 mm is assumed. In addition, as the width of the second group, label widths of about 50 mm and about 40 mm are assumed.

  The label paper 2A has a plurality of labels attached to a long release paper having the width of the first group, and the label roll 20A has an outer surface on which the surface that is one surface on which the labels are attached faces outward. In a form called winding, the label sheet 2A is wound around a hollow core 21A.

  Similarly, the label paper 2B has a plurality of labels attached to a long release paper having a width of the second group that is wider than the width of the first group, and the label roll 20B has one of the labels attached. The label paper 2 </ b> B is wound around a hollow core 21 </ b> B in a form called “external winding” in which the surface, which is a surface, faces outward.

  The label printer 1 </ b> A has a configuration in which a label roll 20 </ b> A or a label roll 20 </ b> B is set and a configuration that can be attached to and detached from the mounting unit 3. A guide unit 4 is provided that is attached to the section 3 and has a first label width regulation guide 40 that regulates the position in the left-right direction that is the width direction of the label paper 2A.

  In addition, the label printer 1A includes a label sheet 2A pulled out from the label roll 20A set in the mounting unit 3 via the guide unit 4 or a label sheet 2B pulled out from the label roll 20B set in the mounting unit 3. The platen roller 5 is provided.

  Furthermore, the label printer 1A prints on the transport path 6 constituting the transport path of the label paper 2A or the label paper 2B transported by the platen roller 5 and the label of the label paper 2A or the label paper 2B transported by the platen roller 5. A print head 7 is provided.

  The label printer 1A also regulates the second label width regulation guide 8 that regulates the position in the left and right direction, which is the width direction of the label sheet 2B, and the position in the left and right direction that is the width direction of the label sheet 2A or the label sheet 2B. A discharge side label width regulation guide 9 is provided.

  The label printer 1A includes a printer main body 10 having a mounting portion 3, a platen roller 5, a transport guide 60 that configures a transport path 6, and the like, a transport guide 61 that configures the transport path 6, a print head 7, and the like. The printer main body 10 is provided with a cover 11 that can be opened and closed with the shaft portion 10a as a fulcrum.

  In the label printer 1A, when the cover 11 is opened, the conveyance guide 61 is retracted upward, and the label roll 20A or the label roll 20B can be set in the mounting portion 3, and the label paper 2A or the label roll 20B pulled out from the label roll 20A. The label paper 2B pulled out from the printer can be set in the transport path 6.

  As shown in FIG. 4, in the label printer 1 </ b> A, when the cover 11 is closed, the conveyance guide 60 and the conveyance guide 61 face each other and the conveyance path 6 is configured. In the label printer 1A, when the cover 11 is closed, the platen roller 5 and the print head 7 face each other, and the label paper 2A or the label paper 2B set in the conveyance path 6 is pressed against the platen roller 5 and the print head 7. The

  The platen roller 5 is an example of a transport unit, and is disposed on the lower side with the transport path 6 in between. The platen roller 5 is rotationally driven in both forward and reverse directions by a motor (not shown). The print head 7 is an example of a printing unit, and is disposed on the upper side of the conveyance path 6 and is urged toward the platen roller 5 by a spring. In this example, the print head 7 is a thermal head because the label attached to the label paper 2A or the label paper 2B is a thermal paper.

  In the label printer 1A, when the label roll 20A is set in the mounting portion 3, when the platen roller 5 is rotationally driven in the forward direction, the label paper 2A set in the transport path 6 is transported in the forward feed direction, and forward feed is performed. Printing is performed on the label conveyed in the direction by the print head 7. Further, the label sheet 2A set on the conveyance path 6 is conveyed in the forward feed direction, whereby the label sheet 2A wound around the label roll 20A is pulled out. When the platen roller 5 is rotationally driven in the reverse direction, the label paper 2A set in the transport path 6 is transported in the reverse feed direction, and the print head 7 is aligned with the print start position.

  When the label roll 20 </ b> B is set in the mounting unit 3, when the platen roller 5 is rotationally driven in the forward direction, the label paper 2 </ b> B set in the transport path 6 is transported in the forward feed direction and transported in the forward feed direction. The label is printed by the print head 7. Further, the label paper 2B set on the transport path 6 is transported in the forward feed direction, whereby the label paper 2B wound around the label roll 20B is pulled out. When the platen roller 5 is rotationally driven in the reverse direction, the label paper 2B set in the transport path 6 is transported in the reverse feed direction, and the print head 7 is aligned with the print start position.

  The label printer 1A includes a guide roller 62 that guides the label paper 2A drawn from the label roll 20A or the label paper 2B drawn from the label roll 20B to the conveyance path 6.

  The guide roller 62 is an example of guide means, and is arranged in the transport path 6 on the upstream side of the platen roller 5 and the print head 7 with respect to the transport direction of the label paper 2A or the label paper 2B, and rotates toward the transport guide 61. Provided possible. The guide roller 62 guides the label paper 2A drawn from the label roll 20A or the label paper 2B drawn from the label roll 20B in a direction along the inclination of the transport path 6.

  In the label printer 1A, the label roll 20A and the label roll 20B are externally wound, and the print head 7 is arranged on the upper side of the transport path 6, so that the label paper 2A or the label paper 2B is pulled out from the upper side. 20A or label roll 20B is set on the mounting portion 3.

  For this reason, the direction of the label paper 2A or the label paper 2B guided to the conveyance path 6 is changed by the guide roller 62, but the guide roller 62 can be rotated so that the label paper 2A or the label paper 2B can be rotated. The applied load is reduced and the label is prevented from rubbing.

  In the label printer 1 </ b> A, the label roll 20 </ b> A having the width of the first group can be set on the mounting portion 3 by attaching the guide unit 4 to the mounting portion 3. On the other hand, the label roll 20 </ b> B having the width of the second group can be set on the mounting portion 3 by itself.

  The mounting portion 3 is configured by a space having a height capable of accommodating the label roll 20A and the label roll 20B having a predetermined diameter and a width capable of accommodating the label roll 20B having the maximum width of the second group. The

  In the mounting portion 3, holder receiving portions 31 that support both end portions of the label holder 30 inserted into the core 21A of the label roll 20A or the core 21B of the label roll 20B are formed inside the opposing side surfaces. The label holder 30 is formed with a stepped portion on the outer peripheral surface for regulating the position in the width direction with respect to the label roll 20B having the width of the second group. For example, in the configuration in which the label roll 20B having two kinds of widths can be set as the width of the second group, two step portions are formed in accordance with the width of the label roll 20B.

  The mounting portion 3 has a mounting portion 32 to which the guide unit 4 is attached formed on the bottom surface. In FIG. 3, the mounting portion 3 from which the guide unit 4 is removed is illustrated, and the mounting portion 32 aligns the guide unit 4 with a screw hole 34 to which a screw 33 for fixing the guide unit 4 is fastened. A positioning hole 35 is provided.

<Configuration example of guide unit provided with first label width regulation guide>
6 and 7 are perspective views showing an example of the guide unit. Next, the details of the guide unit 4 will be described with reference to the drawings. The guide unit 4 is configured by bending a metal plate material into a predetermined shape, and is opposed to the first label width regulation guide 40 facing the label paper 2A having the first group width, and the first label width regulation. A first detachment prevention guide 41 for preventing the label paper 2A from detaching from the guide 40 is provided.

  The guide unit 4 is attached to the mounting portion 3 as shown in FIGS. 1 and 4 so that the first label width regulation guide 40 and the first detachment prevention guide 41 are moved in the transporting direction of the label paper 2A. On the other hand, it is disposed upstream of the platen roller 5 and the print head 7 and upstream of the guide roller 62.

  The first label width restriction guide 40 is an example of first label width restriction means that is an introduction side label width restriction means. When the guide unit 4 is attached to the attachment portion 3, the label roll 20A set in the attachment portion 3 is used. Protrudes in a path through which the label paper 2A drawn from the upper side passes.

  Since the first label width regulation guides 40 are opposed to each other at intervals corresponding to the width of the label paper 2A, the label paper 2A is passed between the first label width regulation guides 40 by passing the label paper 2A. The position in the width direction of the label paper 2 </ b> A having the width of the first group is regulated on the upstream side of the platen roller 5 and the print head 7 with respect to the forward transport direction.

  As a result, when the label sheet 2A is set on the conveyance path 6, the position in the left-right direction with respect to the print head 7 is restricted. Further, the position in the width direction of the label paper 2A conveyed by the platen roller 5 is regulated, and the skew feeding of the label paper 2A is prevented.

  The first label width regulation guide 40 includes an introduction guide portion 42 that is configured by an inclined surface with a gradually increasing interval on the side facing the label roll 20A set in the mounting portion 3 and guides the introduction of the label paper 2A. .

  The introduction guide part 42 is an example of introduction means, and is configured by bending the first label width regulation guide 40 on the side facing the label roll 20A set in the mounting part 3 to the outside. Thereby, the label paper 2A can be passed between the first label width regulation guides 40 from the introduction guide portion 42 wider than the width of the label paper 2A, and the work of setting the label paper 2A can be easily performed. Further, the label paper 2A is prevented from being damaged.

  In the label printer 1A of the present embodiment, it is also possible to set a label roll on which a label sheet is wound in a form called inner winding in which one surface on which a label is stuck is inward. The internally wound label roll having the width of the first group is set in the guide unit 4 in a direction in which the label sheet is pulled out from the lower side, and when the label sheet is set in the conveyance path, The position is regulated by the first label width regulation guide 40. Further, the position in the width direction of the label sheet conveyed by the platen roller 5 is regulated by the first label width regulation guide 40, and the skew feeding of the label sheet can be prevented even with an internally wound label roll. Further, the label sheet can be passed between the first label width regulation guides 40 from the introduction guide portion 42 wider than the width of the label sheet, and the work of setting the label sheet can be easily performed. Further, the label paper is prevented from being damaged.

  The first detachment prevention guide 41 is an example of a first detachment prevention means, and a cylindrical or columnar convex member is formed on the inner surface of the first label width regulation guide 40. The first detachment prevention guide 41 is pulled out from the upper side of the label roll 20A set in the mounting portion 3 and the label paper 2A with curl is placed on the lower side constituting the conveyance path 6 in the reverse direction of the curl. It is provided at a position to be pressed in the direction of the transport guide 60.

  Further, in the configuration provided with the discharge side label width regulation guide 9, the first detachment prevention guide 41, as shown in FIG. 5, the maximum diameter position of the label roll 20 </ b> A set on the mounting portion 3 and the discharge side label width. It is provided below the virtual straight line L1 connecting the upper end position of the restriction guide 9 and below the virtual straight line L2 connecting the minimum diameter position of the label roll 20A and the upper end position of the discharge side label width restriction guide 9.

  Further, as shown in FIG. 4, the first detachment prevention guide 41 has the maximum diameter position of the label roll 20 </ b> A in a state where the label sheet 2 </ b> A is guided to the conveyance path 6 by the guide roller 62 when the cover 11 is closed. It is provided above the label sheet 2 </ b> A that is pulled out from the sheet and guided to the conveyance path 6 by the guide roller 62.

  As a result, the label roll 20A is set by opening the cover 11 to the mounting portion 3 to which the guide unit 4 is attached, and the label paper 2A pulled out from the label roll 20A passes between the first label width regulation guides 40. Then, the label sheet 2A is pressed by the first detachment prevention guide 41, and is prevented from detaching from the first label width regulation guide 40 by a curl or the like.

  When the cover 11 is closed, the label sheet 2A is moved along the transport path 6 by the guide roller 62 in a state where the position in the width direction is regulated by the first label width regulation guide 40 without holding the label sheet 2A by hand. Guided in a direction along the inclination, the position in the left-right direction with respect to the print head 7 is regulated, and is pressed against the platen roller 5 and the print head 7.

  Further, in the configuration provided with the discharge side label width regulation guide 9, even when the label roll 20A is not used or is close to unused, and the diameter is large, the label roll 20A is used up to the vicinity of the core 21A and the diameter is small. Even in the state, the label sheet 2A pressed by the first detachment prevention guide 41 does not come off from the discharge side label width regulation guide 9 when the label sheet 2A is set.

  Further, when the cover 11 is closed, the label sheet 2A guided to the conveyance path 6 by the guide roller 62 is not used, or even if the label roll 20A is not used and has a large diameter, the label roll 20A is not used. Even if it is used up to the vicinity of the lead 21 </ b> A and the diameter is small, it is disengaged from the first disengagement prevention guide 41. Therefore, since the label sheet 2A does not come into contact with the first detachment prevention guide 41 during the conveyance of the label sheet 2A, it is possible to reliably prevent the label from being rubbed. The first detachment prevention guide 41 has a cylindrical shape or a columnar shape, and is in contact with the label sheet 2A with a curved surface. Therefore, the label sheet 2A guided to the conveyance path 6 by the guide roller 62 is the first detachment prevention guide 41. Even if it contacts the surface, it is a structure in which the rubbing trace or the like hardly occurs on the label.

  The first detachment prevention guide 41 is configured such that the tip of the convex member has a curved surface or a taper shape, and the first detachment prevention guide 41 is set when the label sheet 2A is set between the first label width regulation guides 40. 41 is prevented from coming into contact with the label sheet 2A at the corners to prevent the label sheet 2A from being damaged.

  The guide unit 4 includes a fixing hole portion 43 into which the screw 33 is inserted and a positioning convex portion 44 to be inserted into the positioning hole portion 35. The positioning convex portion 44 is an example of a positioning means. When the positioning convex portion 44 is inserted into the positioning hole 35, the guide unit 4 aligns the positions of the fixing hole 43 and the screw hole 34 and positions the guide unit 4 on the mounting portion 3. The The guide unit 4 is fixed to the mounting portion 3 by fastening the screw 33 to the screw hole 34 through the fixing hole 43.

  Thereby, the guide unit 4 can be configured to be detachable from the mounting portion 3. Further, when the guide unit 4 is attached to the mounting portion 3, the fixing hole portion 43 and the screw hole 34 can be easily aligned. Further, by fitting the positioning hole 35 of the mounting portion 3 with the positioning convex portion 44 of the guide unit 4, the position of the guide unit 4 in the mounting portion 3, particularly the position of the guide unit 4 in the width direction of the label paper 2A is accurately determined. Can be aligned.

  Accordingly, when the label paper 2A having the first group width that is not supported by the second label width regulation guide 8 is used, the guide unit 4 is attached to the mounting portion 3 so that the label paper 2A having the first group width is attached. Yes. If a plurality of types of guide units 4 having different intervals between the first label width regulation guides 40 are prepared, it is possible to handle a plurality of types of label paper 2A having a first group of widths.

  The guide unit 4 is configured to be fixed and detachable with the screw 33, but means for fixing and detaching with a screw other than the screw, for example, a hook having a claw portion and a hole portion to which the claw portion is locked, etc. It may be a fixing and detaching means. Further, as the positioning means of the guide unit 4, the positioning hole 35 may be formed in a convex shape and the positioning convex portion 44 may be engaged as a hole shape.

  The guide unit 4 includes a deformation prevention shaft 45 that holds the interval between the first label width regulation guides 40. The deformation prevention shaft 45 is an example of a width holding unit, and connects the first label width restriction guides 40 so that the guide unit 4 made of a metal plate material is not deformed, so that the first label width restriction guides are not deformed. The interval of 40 is secured to a size that matches the width of the label paper 2A.

<Example of configuration of second label width regulation guide>
Next, the details of the second label width restriction guide 8 will be described with reference to the drawings. The label printer 1A includes a second label width restriction guide 8 on the upstream side of the platen roller 5 and the print head 7 and on the downstream side of the guide roller 62 with respect to the transporting direction of the label paper 2B.

  The second label width restriction guide 8 is an example of a second label width restriction means that is an introduction side label width restriction means. The second label width restriction guide 8 protrudes from the lower conveyance guide 60 that constitutes the conveyance path 6, and It is provided in the vicinity and opposes at an interval according to the width of the label paper 2B.

  Since the second label width regulation guide 8 is opposed to the label paper 2B at an interval corresponding to the width of the label paper 2B, the label paper 2B is passed between the second label width regulation guides 8 and thereby the label paper 2B. The position in the width direction of the label paper 2 </ b> B having the width of the second group is regulated on the upstream side of the platen roller 5 and the print head 7 with respect to the transport direction of the forward feed.

  As a result, when the label sheet 2B is set in the transport path 6, the position in the left-right direction with respect to the print head 7 is restricted. Further, the position in the width direction of the label paper 2B conveyed by the platen roller 5 is regulated, and the skew feeding of the label paper 2B is prevented.

  In addition, when the inner roll label roll having the width of the second group is set, the label roll is set in the mounting portion 3 from which the guide unit 4 is removed in a direction in which the label sheet is pulled out from below. When the label sheet is set on the conveyance path, the position in the left-right direction with respect to the print head 7 is regulated by the second label width regulation guide 8. Further, the position in the width direction of the label sheet conveyed by the platen roller 5 is regulated by the second label width regulation guide 8, and the skew feeding of the label sheet is prevented.

  The second label width regulation guide 8 includes a second detachment prevention guide 80 that prevents detachment of the label sheet 2B. The second detachment prevention guide 80 is an example of a second detachment prevention means, and is formed to project inward from the upper end of the second label width regulation guide 8. The second detachment prevention guide 80 is configured such that the lower surface in contact with the label paper 2B has, for example, an arc shape and contacts the label paper 2B with a curved surface.

  The second label width regulation guide 8 is configured to be movable in the width direction of the label paper 2B in order to be able to cope with label papers 2B having different widths in the width of the second group, and is opposed to the second label The interval of the label width regulation guide 8 can be changed. At this time, a configuration is provided in which the second label width regulation guide 8 can be fixed at a predetermined position so that the position of the label paper 2 </ b> B in the left-right direction does not shift with respect to the print head 7. Moreover, the structure which the 2nd label width regulation guide 8 which opposes can move interlockingly in right and left may be provided.

  As a result, the label roll 20B is set by opening the cover 11 to the mounting portion 3 to which the guide unit 4 is not attached, and the label paper 2B pulled out from the label roll 20B passes between the second label width regulation guides 8. When passed, the label sheet 2B is pressed by the second detachment prevention guide 80, and is prevented from detaching from the second label width regulation guide 8 due to curling or the like.

  When the cover 11 is closed, the label sheet 2B is moved along the transport path 6 by the guide roller 62 in a state where the position in the width direction is regulated by the second label width regulation guide 8 without holding the label sheet 2B by hand. Guided in a direction along the inclination, the position in the left-right direction with respect to the print head 7 is regulated, and is pressed against the platen roller 5 and the print head 7.

  Further, since the second label width regulation guide 8 is provided in the lower conveyance guide 60 constituting the conveyance path 6, the label roll 20B is not used in the configuration including the discharge side label width regulation guide 9. Even when the diameter is close to being unused and the diameter is large, even when the label roll 20B is used up to the vicinity of the core 21B and the diameter is small, when the label paper 2B is set, the second separation prevention guide 80 is used. The label paper 2B to be pressed does not come off from the discharge side label width regulation guide 9.

<Configuration example of discharge side label width regulation guide>
Next, the details of the discharge side label width regulation guide 9 will be described with reference to the drawings. The label printer 1A includes a discharge side label width regulation guide 9 in the vicinity of the downstream side of the platen roller 5 and the print head 7 with respect to the transport direction of the forward feeding of the label paper 2A and the label paper 2B.

  The discharge side label width restriction guide 9 is an example of a discharge side label width restriction means. A screw hole 92 is formed in the plate-like conveyance guide 63 made of a sheet metal or the like constituting the lower conveyance path 6 on the downstream side, and the screw 91 inserted into the hollow pin 90 is fastened. The discharge-side label width regulation guide 9 corresponds to the label paper 2A having the width of the first group and the label paper 2B having the width of the second group. Are formed, and the screw 91 and the screw hole 92 constitute a position adjusting means. For example, the innermost screw hole 92 corresponds to the label paper 2A having the first group width, and the second and outermost screw holes 92 from the inner side correspond to the label paper 2B having the second group width.

  The discharge-side label width regulation guide 9 has an inner diameter of the hollow pin 90 and an outer diameter of the screw portion of the screw 91 that are substantially the same as long as the screw 91 can be inserted into the hollow pin 90, and the screw 91 inserted into the hollow pin 90. Is fastened to the screw hole 92, so that the outer position of the hollow pin 90 is attached to a fixed position according to the position of the screw hole 92.

  For example, FIG. 1 shows an example in which the discharge side label width regulation guide 9 is attached corresponding to the label paper 2A of the first group width, and the screw 91 inserted into the hollow pin 90 is replaced with the innermost screw hole 92. , The discharge-side label width regulation guide 9 protrudes from the conveyance guide 63 constituting the lower conveyance path 6 and is opposed to the label sheet 2A at an interval corresponding to the width.

  Further, FIG. 2 shows an example in which the discharge side label width regulation guide 9 is attached corresponding to the label paper 2B having the width of the second group, and the screw 91 inserted into the hollow pin 90 is arranged on the inner side according to the label width. The discharge-side label width regulation guide 9 protrudes from the transport guide 63 and is opposed to the label paper 2B at an interval according to the second or outermost screw hole 92.

  Since the discharge side label width regulation guide 9 is opposed to the label sheet 2A or the label sheet 2B at an interval corresponding to the width of the label sheet 2A, the label sheet 2A or the label sheet 2B is passed between the discharge side label width regulation guide 9. As a result, the position in the width direction of the label paper 2A or the label paper 2B is regulated on the downstream side of the platen roller 5 and the print head 7 with respect to the transporting direction of the label paper 2A or the label paper 2B. Further, the position in the width direction of the label paper 2A or the label paper 2B is regulated on the upstream side of the platen roller 5 and the print head 7 with respect to the transport direction of the reverse feeding of the label paper 2A or the label paper 2B.

  In particular, when the label paper 2A or the label paper 2B is transported in the reverse feed direction in order to align the print head 7 with the print start position, the label paper 2A or the label is upstream of the platen roller 5 and the print head 7. By restricting the position of the sheet 2B in the width direction, the occurrence of skew of the label sheet 2A or the label sheet 2B can be suppressed, and the alignment to the print start position can be performed accurately.

  The discharge-side label width regulation guide 9 regulates the position in the width direction of the label paper 2A or the label paper 2B on the outer peripheral surface of the cylindrical hollow pin 90, and in the conveyance direction of the progressive feeding of the label paper 2A or the label paper 2B. On the other hand, the surface on the entrance side has a pick-up shape constituted by a curved surface with a wide interval.

  Thus, in order to align the print head 7 with the print start position, the label paper 2A or the label paper 2B is sequentially fed after the control of returning the leading end of the label paper 2A or the label paper 2B to the position of the print head 7 is performed. When transported in the direction, the label sheet 2 </ b> A or the label sheet 2 </ b> B is guided between the discharge side label width regulation guide 9 along the curved surface of the hollow pin 90.

  Therefore, it is possible to prevent the label paper 2A or the label paper 2B from colliding with the discharge-side label width regulation guide 9 and causing jamming such as the label paper being jammed. Further, it is possible to prevent the corner portion at the tip of the label paper 2A or the label paper 2B from being damaged.

  Even when the inner-wrapped label roll is set, the position in the width direction of the label sheet is regulated on the downstream side of the platen roller 5 and the print head 7 with respect to the transporting direction of the label sheet in the forward direction. With respect to the reverse feed direction, the position of the label paper in the width direction is regulated on the upstream side of the platen roller 5 and the print head 7. Thereby, in order to align the print head 7 with the print start position, when the label paper is transported in the reverse feed direction, the occurrence of skew of the label paper is suppressed even with the inner-wrapped label roll, Position alignment to the print start position can be performed accurately.

  Further, in order to align the print head 7 with the print start position, the label paper is ejected when the label paper is transported in the forward feed direction after the control of returning the leading edge of the label paper to the position of the print head 7 is performed. It is possible to prevent the jamming such as the label paper jamming by colliding with the side label width regulation guide 9. Further, it is possible to prevent the corner portion at the front end of the label paper from being damaged.

  The discharge-side label width regulation guide 9 is configured to be fixed and detachable by position adjusting means using screws 91 and screw holes 92, but means for fixing and detaching by means other than screws, for example, a claw part and a claw part are engaged. It may be a fixing and detaching means such as a hook having a hole to be stopped.

  In addition, a plurality of screw holes 92 are provided in accordance with the label width so that the interval between the discharge side label width regulation guides 9 can be adjusted. However, there is a different interval in accordance with the label width with respect to one mounting position. A plurality of types of discharge-side label width restriction guides may be provided, or a discharge-side label width restriction guide having a shape with a different interval depending on the mounting direction may be provided. Or you may provide the structure which can be slid like the 2nd label width regulation guide 8 mentioned above.

  Further, the discharge-side label width restriction guide 9 has a cylindrical outer peripheral surface formed to pick up the label paper, but the discharge-side label width restriction guide has a tapered shape in which the interval increases toward the inlet side of the label paper. It is good also as a taper shape and the pick-up shape of a label paper.

  The present invention can be applied to a label printer that performs printing on a label used in a logistics industry, a manufacturing industry, a sales industry, or the like.

  DESCRIPTION OF SYMBOLS 1A ... Label printer, 10 ... Printer main body, 11 ... Cover, 2A, 2B ... Label paper, 20A, 20B ... Label roll, 21A, 21B ... Core, 3 ... Mounting part, 31 ... Holder receiving part, 32 ... Mounting part, 33 ... Screw, 34 ... Screw hole, 35 ... Positioning hole part, 4 ... Guide unit, 40 ... 1st label width regulation guide, 41 ... 1st removal prevention guide, 42 ... introduction guide, 43 ... fixing hole, 44 ... positioning convex part, 45 ... deformation prevention shaft, 5 ... Platen roller, 6 ... Conveyance path, 60, 61 ... Conveyance guide, 62 ... Guide roller, 7 ... Print head, 8 ... Second label width regulation guide, 80 ... Second disengagement prevention guide, 9 ... Discharge-side label width regulation guide 90 ... hollow pin, 91 ... thread, 92 ... screw hole

Claims (4)

A mounting section on which a label roll wound with a long label sheet is set;
Transport means for transporting the label paper drawn from the label roll set in the mounting section;
Printing means for printing on the label of the label paper conveyed by the conveying means;
Label width regulating means that is provided upstream of the printing means and the conveying means in the conveyance direction of the label paper and regulates the position in the width direction of the label paper;
A label printer comprising: a detachment preventing unit that prevents the label paper from detaching from the label width regulating unit. A discharge side label width regulating unit that is provided in the vicinity of the downstream side in the conveyance direction of the label paper with respect to the printing unit and the conveyance unit, and regulates the position in the width direction of the label paper;
The label printer according to claim 1, wherein the detachment prevention unit is provided below a straight line connecting an outer peripheral position of a label roll set in the mounting portion and the discharge side label width regulating unit. A printer body having the mounting portion;
A cover provided with guide means for guiding label paper to a transport path by the transport means, which is provided so as to be openable and closable with respect to the printer body;
3. The label according to claim 1, wherein when the cover is closed with respect to the printer main body, the detachment prevention unit is provided at a position away from the label sheet guided to the conveyance path by the guide unit. Printer. The label width restricting means corresponds to a label paper having a predetermined first group width, and includes a first label width restricting means having a first disengagement preventing means as the disengagement preventing means,
Corresponding to the label paper of the width of the second group different from the width of the first group, comprising a second label width regulating means having a second detachment prevention means as the detachment prevention means,
The first label width restricting means is detachably provided on the attachment portion, and the label roll around which the first group width paper is wound is attached to the first label width restricting means. The label roll on which the label paper having the width of the second group is wound is set in the mounting portion from which the first label width regulating means is removed. Or the label printer of 3.

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