JP5307596B2 - Substantially cylindrical member support structure, roll paper holder, label printer - Google Patents

Description

  The present invention relates to a support structure for a substantially cylindrical member that holds a substantially cylindrical support target member substantially horizontally, a roll paper holder including the support structure, and a label printer.

  The roll paper used in the label printer is a roll of a paper made up of a label and a mount on which the label is loaded, and is an inner roll type in which the paper is wound so that the label is not exposed on the surface of the roll paper. There are two types, one that is wound and the other that is wound around the paper so that the label is exposed on the surface of the roll paper.

  The inner roll type roll paper is drawn from the lower side of the roll paper 101 as shown in FIG. 6, whereas the outer roll type roll paper is drawn from the upper side of the roll paper 102 as shown in FIG. It is. That is, the paper conveyance path differs between the inner roll type roll paper and the outer roll type roll paper.

  For this reason, in consideration of obstacles in the transport system, it is common for the label printer to be a dedicated device of either the inner winding type or the outer winding type. There are also devices that can handle both internal and external winding types.

Japanese Patent Laid-Open No. 11-35022

  However, in the label printer for both the inner and outer windings as in the invention disclosed in Patent Document 1, the following problems occur.

FIG. 8 shows a state in which an inner roll type roll paper 101 is mounted on a label printer for both inner and outer rolls as in the invention disclosed in Patent Document 1.
During the printing operation, the paper is conveyed in a stretched state between the roll paper 101 and the sensor 4, but the conveyance path bends at a steep angle at a portion in contact with the guide member 115 installed in the paper guide 111. There is a case where a force for squeezing the paper is generated and the label 150 is peeled off from the mount. If the sheet is transported as it is with the label 150 peeled off from the mount, the peeled label 150 will adhere to the inside of the apparatus and cause a paper jam.

As shown in FIG. 9, some roll papers have a perforation 155 for cutting which is wound around a sheet formed on a mount between labels 150. FIG. 10 shows a state in which a roll paper 103 with an outer winding perforation is mounted on a label printer for both inner and outer windings as in the invention disclosed in Patent Document 1.
At the time of back-feeding (operation for temporarily returning paper) after the cutting operation for separating the printed label 150, the fed-back paper may be bent at the perforation between the sensor 4 and the roll paper 103. When the paper is bent in this way, the bent portion collides with the roll paper 103 substantially perpendicularly, and there is no escape space for the fed paper. If the sheet is further fed back from this state, the sheet is bent at the perforation between the platen 3 and the sensor 4, causing a sheet jam.

  As described above, when the label printer has a structure for both the inner winding and the outer winding, there is a problem that paper jam is likely to occur.

  SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and can use both an inner roll type roll paper and an outer roll type roll paper. An object of the present invention is to provide a support structure for a member and a roll paper holder.

  In order to achieve the above object, according to a first aspect of the present invention, there is provided a substantially cylindrical member support structure for supporting a substantially cylindrical support target member substantially horizontally, and a pair of opposing structures facing the end surface of the support target member. Each of the wall portions is arranged in a cylinder of the support target member and has a projection portion supporting the support target member, and the projection portion at a plurality of positions having substantially the same horizontal position but different vertical positions. The present invention provides a support structure for a substantially cylindrical member, characterized by comprising a lock structure that is fixed to either of them.

  In order to achieve the above object, the present invention provides, as a second aspect, a roll paper holder to which the substantially cylindrical member support structure according to the first aspect of the present invention is applied. The loaded paper is a roll paper in which the mount is wound in a roll shape, and the wall portion is a part of a paper guide provided with a guide member for guiding the mount and the paper fed from the roll paper. A roll paper holder is provided.

  In order to achieve the above object, as a third aspect, the present invention includes a roll paper holder according to the second aspect of the present invention, and guides the mount and the paper fed from the roll paper to the print head. The present invention provides a label printer characterized in that printing is performed on paper with the label head.

  According to the present invention, it is possible to use either an inner-rolled roll paper or an outer-rolled roll paper, and a label printer in which paper jam is unlikely to occur, and a substantially cylindrical member support structure and roll paper used therefor A holder can be provided.

It is a figure which shows the structure of the principal part of the roll paper holder which applied the support structure of the substantially cylindrical member which concerns on 1st Embodiment which implemented this invention suitably. It is a figure which shows the state which mounted | worn the inner roll type roll paper to the roll paper holder which fixed the position plate to the upper position. It is a figure which shows the state which mounted | worn the outer roll type roll paper to the roll paper holder which fixed the position plate to the lower position. It is a figure which shows the structure of the principal part of the roll paper holder which applied the support structure of the substantially cylindrical member which concerns on 2nd Embodiment which implemented this invention suitably. It is a figure which shows the state which fixed the slider in the different position in a slit by changing the position which engages a slider and a stopper. It is a figure which shows the state which mounted | wore the inner roll type roll paper in the label printer. It is a figure which shows the state which mounted | wore the outer roll type roll paper to the label printer. It is a figure which shows the state which mounted | wore the inner roll type roll paper to the label printer for both inner and outer windings. It is a figure which shows the roll paper in which the perforation for cutting was formed. It is a figure which shows the state which mounted | worn with the roll paper of the outer winding type perforation to the label printer for both inner winding / outer winding.

[First Embodiment]
A first embodiment in which the present invention is suitably implemented will be described.
FIG. 1 shows a main configuration of a roll paper holder to which a substantially cylindrical member support structure according to the present embodiment is applied. On the wall portion 11 of the paper guide 1 installed facing the end surface of the roll paper to be supported, the position plate 2 is installed so as to be rotatable about the support shaft 21 as a pivot. The position plate 2 is formed with a protrusion 22 at a distance from the support shaft 21 and has a substantially crank shape in a side view. A recess 23 is formed at the end of the position plate 2 on the side where the protrusion 22 is provided.
The wall portion 11 of the paper guide 1 is provided with a substantially circular recess 12, and the support shaft 21 of the position plate 2 is installed at the center of the recess 12. At the upper and lower ends of the recess 12 in the vertical direction, convex portions 13 having a shape that can be fitted into the concave portions 23 of the position plate 2 are formed. Since the thinning 14 is made adjacent to the convex portion 13, the convex portion 13 is supported by a thin plate-like portion, and elasticity is given in the vertical direction.

  By fitting the concave portion 23 of the position plate 2 and the convex portion 13 of the wall portion 11 of the paper guide 1, the position plate 2 is moved to the upper position shown in FIG. 1A or the lower position shown in FIG. It can be fixed to.

  FIG. 2 shows a state in which the inner roll type roll paper 5 is mounted on the roll paper holder with the position plate 2 fixed at the upper position. The roll paper holder is provided with a paper guide 1 disposed so as to be opposed to each other, and these are connected via a base 18. The paper fed from the roll paper 5 is guided by the guide member 15 installed on the pair of wall portions 11 of the paper guide 1 and passes through the sensor 4 for detecting the leading end of the label. The paper that has passed through the sensor 4 is supplied between the platen 3 and the print head 7. An ink ribbon 8 is also supplied between the platen 3 and the print head 7, and printing is performed by transferring the ink of the ink ribbon 8 to the label by the print head 7. The sheet is conveyed by the rotation of the platen 3.

  Compared with the structure shown in FIG. 8, the roll paper 5 is held at a higher position in the vertical direction, and the paper is separated from the roll paper 5 at a higher position in the vertical direction. Therefore, the bending angle of the paper in the guide member 15 of the paper guide 1 is increased, the label is hardly peeled off, and the occurrence of paper jam is reduced.

  FIG. 3 shows a state where the outer roll type roll paper 6 is mounted on the roll paper holder with the position plate 2 fixed at the lower position. Compared with the structure shown in FIG. 10, the roll paper 6 is held at a lower position in the vertical direction. Accordingly, since the paper fed back at the time of back feed comes into contact with the roll paper 6 above the center of the roll paper 6, even if it comes into contact with the roll paper 6 at the perforation, You can escape upward along. Therefore, the paper is not bent between the platen 3 and the sensor 4, and the occurrence of paper jam is reduced.

  As described above, the label printer including the roll paper holder according to the present embodiment can prevent label peeling and paper breakage between the platen and the sensor, regardless of whether the inner roll type or the outer roll type roll is used. The occurrence of paper jam can be reduced.

  Here, the configuration in which the substantially circular depression is provided in the wall portion of the paper guide is described as an example, but a substantially semicircular depression may be provided.

[Second Embodiment]
A second embodiment in which the present invention is suitably implemented will be described.
FIG. 4 shows a configuration of a roll paper holder to which the substantially cylindrical member support structure according to this embodiment is applied. A slit 16 is provided in the wall 11 of the paper guide 1 along the vertical direction, and a slider 9 having a protrusion 91 for supporting a roll paper to be supported is installed in the slit 16. . A substantially comb-like stopper 17 having a plurality of tooth-like portions is provided adjacent to the slit 16, and the tooth-like portion can protrude into the slit 16. The interval between the teeth of the stopper 17 is such that the slider 9 can be inserted.

  As shown in FIGS. 5A to 5D, the slider 9 can be fixed at different positions in the slit 16 by changing the position where the slider 9 and the stopper 17 are engaged. Therefore, the height of the position for supporting the roll paper can be changed according to the type of roll paper to be used. For example, (a) in FIG. 5 is for a large-diameter inner roll paper, (b) is for a small-diameter inner roll paper, (c) is for a small-diameter outer roll paper, and (d) is large. Since the roll paper can be installed at a height according to the diameter of the roll paper as well as how to roll the roll paper, it is possible to set the position for the outer roll paper of the diameter. Paper folding can be prevented, and the occurrence of paper jam can be reduced.

  In this example, the height of the position supporting the roll paper can be changed in four stages. However, the height can be adjusted at any two or more positions by changing the number of teeth of the stopper 17. Can do. Needless to say, the positions at which the stoppers 9 are fixed need not be evenly spaced (the teeth need not be formed on the stopper 17 at evenly spaced intervals).

  As described above, the label printer provided with the roll paper holder according to the present embodiment can prevent the label from being peeled off or the paper from being folded between the platen and the sensor, regardless of whether the inner winding type or the outer winding type paper is used. The occurrence of paper jam can be reduced.

Each of the above embodiments is an example of a preferred embodiment of the present invention, and the present invention is not limited to this.
That is, the structure for changing the height for supporting the roll paper shown in the above embodiment is an example of the present invention, and the present invention is not limited to these specific structures.
As described above, the present invention can be variously modified.

DESCRIPTION OF SYMBOLS 1,111 Paper guide 2 Position arm 3 Platen 4 Sensor 5, 6, 101, 102, 103 Roll paper 7 Print head 8 Ink ribbon 9 Slider 11 Wall part 12 Depression 13 Convex part 14 Thinning 15, 115 Guide member 16 Slit 17 Stopper 21 Support shaft 22 Projection 23 Recess 150 Label 155 Perforation

Claims (5)

A support structure of a substantially cylindrical member that supports a substantially cylindrical support target member substantially horizontally,
Each of the pair of wall portions facing the end surface of the support target member is disposed in a cylinder of the support target member, and a protrusion that supports the support target member,
A locking structure for fixing the protrusion to any one of a plurality of positions having substantially the same horizontal position and different vertical positions;
The lock structure is a structure for fixing the protrusion to either the first position or the second position vertically below the first position;
The projecting portion is connected to a shaft portion rotatably joined to the wall portion via an intermediate portion disposed substantially parallel to the wall portion,
The protruding portion, the intermediate portion, and the shaft portion have a substantially crank shape in a side view.
Support structure for a substantially cylindrical member. The lock structure includes a recess formed at an end of the intermediate portion on the protrusion side,
To the wall, supporting a substantially cylindrical member of claim 1 Symbol mounting characterized by comprising the said first position or said second protruding portion formed to the recess and the fitting in position Construction. The support structure of substantially cylindrical member according to claim 2 Symbol mounting, characterized in that the lightening decorated with the wall portion adjacent to the convex portion, the elastic is applied to the convex portion. A roll paper holder to which the support structure of the substantially cylindrical member according to any one of claims 1 to 3 is applied,
The support target member is a roll paper in which a mount is wound into a roll shape together with the loaded paper,
The roll paper holder, wherein the wall portion is a part of a paper guide provided with a base sheet fed from the roll paper and a guide member for guiding the paper. Comprising a roll paper holder according to claim 4 Symbol mounting, the mount and the sheet fed from the paper roll is guided to the print head, the label printer, characterized in that printing on the paper in the label head.

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