Printer device

Abstract

To provide a printer device in which an operation unit is installed near a slide portion, and which therefore can be miniaturized.SOLUTION: A printer device of an embodiment comprises: a pair of rack gears arranged in a step-wise manner on the paper sheet conveyance direction side of continuous paper stored in a concave storage portion storing roll-shape continuous paper and having a tooth row arranged in a first direction orthogonal to the paper sheet conveyance direction and in a direction in which the pair of rack gears are opposite to each other; a pinion gear fitting to tooth rows of the pair of rack gears; a rack-and-pinion cover having a tilted surface opposed to the rack gear and the pinion gear; and a pair of paper sheet guides moving in an open-closed manner in the first direction. A mounting portion mounting the paper guide to the rack gear extends along the tilted portion of the rack and pinion cover and in the paper sheet conveyance direction from a back surface on the opposite side of the tooth row.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] Embodiments of the present invention relate to a printer device.

Background Art

[0002] Conventionally, there is a printer device that prints on a recording medium which is a roll-shaped continuous paper such as a label or a receipt (hereinafter referred to as roll paper). Inside the printer device, a storage unit (hereinafter referred to as a hopper) that stores and holds the continuous paper rotatably supports the central part of the roll of the continuous paper (hereinafter referred to as the core part). In the hopper, a support member that supports the core part has a convex part or the like that can be inserted into the inner circumference of the core part. For example, the hopper has a pair of paper guides that regulate the movement of the continuous paper along the width direction of the continuous paper. Each of the pair of paper guides is provided with the above-described support member. The pair of paper guides faces two side surfaces of the continuous paper and is provided on the hopper so as to be movable in conjunction with each other in the width direction of the continuous paper. Thereby, the pair of paper guides supports the core part so that the central part in the width direction of the continuous paper is aligned with the central part of the printing area in the printer device.

[0003] In order to move the paper guide smoothly, it is essential to operate a part close to the sliding part (slide part) of the paper guide. For this reason, after setting the roll paper, the operation part of the paper guide must be arranged at a position that does not interfere with the roll paper. However, when the operation part is installed away from the slide part, there is a drawback (problem) that the paper guide cannot be moved smoothly. Further, when the operation part is arranged near the slide part, in order to operate the operation part after setting the roll paper, the width direction of the printer must be increased in order to secure a portion for inserting the user's finger, which becomes an obstacle to downsizing the printer.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] The problem that this invention aims to solve is to provide a printer device that allows the operation unit to be installed near the slide unit and that enables the printer to be miniaturized. [Means for solving the problem]

[0006] The printer device of this embodiment includes a concave housing, a pair of rack gears, a pinion gear, Rack and pinion cover, It comprises a pair of paper guides, an operating section, and a mounting section. The concave storage section accommodates a roll of continuous paper. The pair of rack gears are arranged in a stepped manner on the paper transport direction side of the continuous paper stored in the storage section, facing each other and perpendicular to the paper transport direction. And horizontal The pinion gear has a row of teeth arranged in a first direction. The pinion gear is positioned between the pair of rack gears and fits into the row of teeth of the pair of rack gears. A rack and pinion cover having inclined surfaces facing the pair of rack gears and pinion gear is positioned to cover the pair of rack gears and pinion gear. A pair of paper guides are provided at one end of the upper rack gear in the first direction and at the other end of the lower rack gear in the first direction, and are opened and closed in the first direction by the pair of rack gears and the pinion gear to support the sides of the continuous paper stored in the storage section. An operating section is provided on the paper guide provided on the upper rack gear of the pair of paper guides and is provided for the opening and closing movement. The mounting section has an upper mounting section extending from the upper rack gear and a lower mounting section extending from the lower rack gear, and the upper mounting section Before Direction 1 and perpendicular and horizontal to the first direction Perpendicular to the second direction Exchange The third direction Upper The second direction at the end face The paper transport direction The first end and the third direction of the lower mounting portion lower side The second direction at the end face The opposite side of the paper transport direction The second end and 、 The straight line connecting the points follows the inclined surface of the rack and pinion cover. Ori , Second Extending in the direction We The pair of paper guides are then attached to the rack gear. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a perspective view showing the external appearance of a printer device according to an embodiment. [Figure 2] Figure 2 is a perspective view showing the printer device with its top cover open, according to an embodiment. [Figure 3] Figure 3 is an example of a perspective view relating to an embodiment, in which the rack and pinion cover and a pair of paper guides supporting the sides of the roll of continuous paper have been removed from the lower cover of the printer device. [Figure 4] Figure 4 is an example of a perspective view illustrating an example of the rack and pinion shown in Figure 3, relating to an embodiment. [Figure 5] Figure 5 shows an example of a rack and pinion shown in Figures 3 and 4, viewed from the rear side of the printer device, relating to an embodiment. [Figure 6] Figure 6 is a diagram relating to an embodiment, showing an example of the upper surface of the rack and pinion shown in Figures 3 to 5. [Figure 7] Figure 7 is an example of a cross-sectional view taken along the line A-A' in Figure 2, relating to an embodiment of a printer device that houses a roll of paper. [Figure 8] Figure 8 shows an example of an embodiment, specifically an enlarged view of the area within the dotted line frame in Figure 7, excluding the rack and pinion cover. [Figure 9] Figure 9 shows an example of an embodiment, specifically the mounting portion which is the end of the upper rack and the elastic body fixing position on the frame. [Figure 10] Figure 10 is an example of a cross-sectional view taken along the line B-B' in Figure 2, relating to an embodiment of a printer device that houses a roll of paper. [Figure 11] FIG. 11 is a diagram showing a modified example in which the upper rack 37 and the lower rack 39 of the rack and pinion are configured in the same shape.

BEST MODE FOR CARRYING OUT THE INVENTION

[0008] (Embodiment) The embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of the outline of the appearance of the printer apparatus 1 according to the embodiment. In the following description, a rectangular coordinate system composed of the X-axis, Y-axis, and Z-axis is used. In the figure, the direction indicated by the arrow is the positive direction. The positive X-axis direction is the left direction, and the negative X-axis direction is the right direction. Also, the positive Y-axis direction is the rear side of the printer apparatus 1, and the negative Y-axis direction is the front side of the printer apparatus 1. Further, the positive Z-axis direction is the upward direction, and the negative Z-axis direction is the downward direction.

[0009] The appearance of the printer apparatus 1 has a lower cover 3, a discharge port 5 for discharging the continuous paper S, and an upper cover 7. The printer apparatus 1 can accommodate a roll paper PR inside.

[0010] The roll paper PR is a roll-shaped printing medium (also referred to as a recording medium) in which the continuous paper S is wound around a hollow core portion 9. The core portion 9 corresponds to the cylindrical portion at the winding center of the continuous paper S. The roll paper PR is, for example, a receipt roll or a label roll. The receipt roll is one in which a strip-shaped continuous paper S for a receipt is wound. The label roll is one in which a label sheet with a label attached to a strip-shaped continuous paper S (label paper) is wound. The printer apparatus 1 takes out the continuous paper S from the roll paper PR and prints information such as transaction details.

[0011] FIG. 2 is a perspective view showing a state in which the upper cover 7 of the printer apparatus 1 is opened. The printer apparatus 1 includes a printer main body 11, a thermal head 13, a platen roller 15, and a storage portion 17. As shown in FIGS. 1 and 2, the lower cover 3 and the upper cover 7 cover the printer main body 11 and the storage portion 17.

[0012] The lower cover 3 is a rectangular parallelepiped case with an open top surface. The substantially upper surface of the printer main body 11 can be opened and closed by the upper cover 7. In addition, the lower cover 3 is provided with connection terminals (not shown) used for connecting the internal printer main body 11 and external devices, power supply terminals (not shown) for supplying power to the printer main body 11, a housing portion 17 including a pair of paper guides 21, and the like. The concave housing portion 17 houses the roll-shaped continuous paper S.

[0013] On the front surface of the lower cover 3, a discharge port 5 is provided. The discharge port 5 opens horizontally so as to discharge the continuous paper S in the front of the printer device 1. Note that the appearance shown in FIG. 1 is merely an example, and various modifications are possible.

[0014] The upper cover 7 is attached to the lower cover 3 so as to be rotatable about the X-axis direction on one side of the back surface side of the upper cover 7. The upper cover 7 opens and closes the opening on the upper surface of the lower cover 3 as it rotates with respect to the rotation axis.

[0015] The thermal head 13 is fixed to, for example, the inner surface of the upper cover 7. In a state where the opening on the upper surface of the lower cover 3 is closed by the upper cover 7, the thermal head 13 is in close contact with the platen roller 15. The thermal head 13 includes a plurality of heating elements provided in parallel, and prints on the paper sandwiched between it and the platen roller 15 by the heat of the heating elements.

[0016] The platen roller 15 rotates by the transmission of the driving force of a stepping motor (not shown), and conveys the paper sandwiched between it and the thermal head 13.

[0017] Figure 3 is an example of a perspective view of the lower cover 3 of the printer device 1, with the cover (hereinafter referred to as the rack and pinion cover) that covers the rack and pinion 35 having a pair of rack gears 31 and a pinion gear 33, and the pair of paper guides 21 that support the sides of the roll of continuous paper S removed. Figure 4 is an example of a perspective view showing an example of the rack and pinion 35 shown in Figure 3. Figure 5 is a diagram showing an example of the rack and pinion 35 shown in Figures 3 and 4, viewed from the rear side of the printer device 1.

[0018] As shown in Figures 3 to 5, the pair of rack gears 31 in the rack and pinion 35 are arranged in a stepped manner on the paper transport side of the continuous paper S housed in the storage section 17. That is, the pair of rack gears 31 are arranged in a stepped manner at different heights along the vertical direction. In other words, while a normal rack and pinion is arranged on the same plane, in this embodiment, as shown in Figure 3, the rack in the X-axis positive direction (left direction) (the rack on the left side of Figure 3, which will be described later as the upper rack) 37 and the rack in the X-axis negative direction (right direction) (the rack on the right side of Figure 3, which will be described later as the lower rack) 39 are arranged on two stepped planes formed in a stepped manner so that the arrangement height of these racks changes. The pair of rack gears 31 have teeth arranged in a first direction perpendicular to the paper transport direction, facing each other. As shown in Figures 3 to 5, the first direction corresponds to the X-axis positive direction. That is, the first direction is perpendicular and horizontal to the paper transport direction and is directed toward the X-axis positive direction.

[0019] As shown in Figures 3 to 5, the pinion gear 33 is positioned between a pair of rack gears 31 and engages with the tooth arrangement of the pair of rack gears 31. Specifically, the pinion gear 33 has a tooth width TW that allows it to engage with the upper rack gear (hereinafter referred to as the upper rack) 37 and the lower rack gear (hereinafter referred to as the lower rack) 39. As shown in Figures 4 and 5, the tooth width TW in the pinion gear 33 along the vertical direction has a length equal to the tooth width of the pair of rack gears 31 and the distance between the upper rack 37 and the lower rack 39 along the vertical direction.

[0020] A pair of paper guides 21 are provided on one end of the upper rack 37 in the first direction and on the other end of the lower rack gear in the same first direction. Specifically, the paper guide provided on the upper rack 37 (hereinafter referred to as the upper paper guide) is attached to a mounting portion (hereinafter referred to as the upper mounting portion) 40 that extends (offset) from the back of the upper rack 37 on the side opposite to the teeth row toward the paper transport direction. The other paper guide of the pair is attached to a mounting portion (hereinafter referred to as the lower mounting portion) 41 that extends (offset) toward the teeth row toward the other end of the lower rack 39, or to a lower mounting portion 41 that extends (offset) toward the back of the lower rack 39 on the side opposite to the teeth row.

[0021] In other words, a pair of paper guides 21 are positioned on a pair of rack gears 31 via an upper mounting section 40 and a lower mounting section 41. The pair of paper guides 21 support the sides of the continuous paper S stored in the storage section 17. The pair of paper guides 21 move in a first direction by the pair of rack gears 31 and pinion gear 33.

[0022] Figure 6 shows an example and a modified example of the upper surface of the rack and pinion 35 shown in Figures 3 to 5. As shown in Figures 4 to 6, the upper mounting portion 40 of the upper rack 37 is offset in the negative Y-axis direction, and the lower mounting portion 41 of the lower rack 39 is offset towards the pinion gear 33. Also, as shown in Figure 6, the upper mounting portion 40 of the upper rack 37, the lower mounting portion 41 of the lower rack 39, and the position of the rotation axis of the pinion gear 33 (hereinafter referred to as the pinion rotation axis) 43 are not arranged on a straight line parallel to the first direction.

[0023] Figure 7 is an example of a cross-sectional view taken along the line A-A' in Figure 2, relating to the printer device 1 containing the roll paper PR. Figure 8 is a magnified example of the portion of the dotted-line frame DF in Figure 7, excluding the rack and pinion cover 45.

[0024] As shown in Figures 3, 7, and 8, the rack and pinion 35 is installed on the frame 47. The frame 47 is provided on the lower cover 3. Specifically, as shown in Figure 3, the upper rack 37 is fitted into a sliding groove 51 provided on the upper part (hereinafter referred to as the upper plane) 49 of the stepped frame 47 so as to be movable in the X-axis direction.

[0025] As shown in Figures 7 and 8, the upper rack 37 has ribs 53 along the X-axis direction. The ribs 53 on the upper rack 37 are fitted into sliding grooves 51 provided on the upper plane 49. In this way, the upper rack 37 is fixed to the upper plane 49 of the frame 47. As a result, the positional relationship of the upper rack 37 with respect to the pinion gear 33 is maintained at a constant level.

[0026] Furthermore, an elastic body may be provided between the upper rack 37 and the upper plane 49 of the frame 47, biasing the upper rack 37 in the direction from the upper mounting portion 40 of the upper rack 37 toward the pinion gear 33 (negative X-axis direction). Specifically, the elastic body is provided between the frame 47 at a position between the lower cover 3 and the pinion gear 33 on the negative X-axis side (hereinafter referred to as the elastic body fixing position) and the upper rack 37. As a result, the elastic body biases the upper rack 37 in the direction from the upper mounting portion 40 of the upper rack 37 toward the pinion gear 33 (negative X-axis direction).

[0027] Figure 9 shows an example of the upper mounting portion 40 of the upper rack 37 and the elastic body fixing position EFP on the frame 47 (not shown in Figure 9). As shown in Figure 9, the elastic body 55 biases the upper rack 37 along the negative X-axis direction from the upper mounting portion 40. The elastic body 55 is realized by a spring, for example, as shown in Figure 9. Note that the means of realizing the elastic body 55 is not limited to a spring, and can be appropriately realized by an elastic material such as rubber.

[0028] Furthermore, as shown in Figures 3, 7, and 8, the lower rack 39 is fitted into a sliding groove 59 provided in the lower portion (hereinafter referred to as the lower plane) 57 of the stepped frame 47 so as to be movable in the X-axis direction. The lower rack 39 also has ribs 61 along the X-axis direction. The ribs 61 of the lower rack 39 are fitted into the sliding grooves 59 provided in the lower plane 57. As a result, the lower rack 39 is fixed to the lower plane 57 of the frame 47. Therefore, the positional relationship of the lower rack 39 with respect to the pinion gear 33 is maintained at a constant level.

[0029] As shown in Figures 3, 7, and 8, the pinion gear 33 is rotatably mounted on the pinion rotation axis 43 of the lower plane 57 of the stepped frame 47, with the rotation axis being the vertical direction. Also, as shown in Figures 3 to 8, the teeth of the pinion gear 33 engage with the teeth of a pair of rack gears 31. Since the pair of rack gears 31 are fixed to the frame 47 via ribs 53 and 61, the pinion gear 33 smoothly transmits the force applied to the upper rack 37 to the lower rack 39. As a result, the upper rack 37 and the lower rack 39 slide along the X-axis in conjunction with the user's operation of the upper rack 37.

[0030] Figure 10 is an example of a cross-sectional view taken along the line B-B' in Figure 2, relating to a printer device 1 containing roll paper PR. As shown in Figure 10, the upper paper guide 211, one of a pair of paper guides 21, which is installed on the upper rack 37, is equipped with an operating unit 63 for opening and closing the pair of paper guides 21. That is, the operating unit 63 for operating the paper guides 21 is installed on the upper part of the upper paper guide 211, which is located on the upper rack 37. In other words, as shown in Figure 10, the operating unit 63 is installed on the upper paper guide 211, which is attached to the upper rack 37 at a higher position on two stepped planes.

[0031] At this time, the operation unit 63 controls the interlocking of the pair of paper guides 21 based on user input. Specifically, the operation by the operation unit 63 is transmitted to the lower rack 39 via the upper rack 37 and pinion gear 33. As a result, the pair of paper guides 21 interlock based on the operation by the operation unit 63. The rack and pinion 35 and the pair of paper guides 21 correspond to sliding parts that can slide along the X-axis direction.

[0032] As shown in Figure 10, the operating unit 63 is positioned near the sliding unit. Specifically, it is preferable that the operating unit 63 is positioned near the upper rack 37 and protrudes above the upper end TE of the lower cover 3 (in the positive Z-axis direction) and is positioned on the upper paper guide 211.

[0033] As shown in Figures 3, 7, and 10, the upper plane 49 on which the upper rack 37 is located has a first corner 65 at its end in the second direction (positive Y-axis direction) perpendicular to the first direction. The lower plane 57 on which the lower rack 39 is located has a second corner 67 at its end in the second direction. The rack and pinion cover 45 has an inclined surface 71 parallel to the straight line 69 (hereinafter referred to as the corner line) connecting the first corner 65 and the second corner 67 in the dotted line of the stepped shape 68. That is, the inclined surface 71 is parallel to the corner line 69 connecting the first corner 65 and the second corner 67.

[0034] As shown in Figures 7 and 10, the upper and lower mounting sections 40 and 41, which position the pair of paper guides 21, are arranged along the inclined surface 71 of the rack and pinion cover 45. The upper rack 37 and lower rack 39 that constitute the rack and pinion 35 are rearranged along the vertical direction to match the inclination angle of the inclined surface 71 of the rack and pinion cover 45. That is, the closer the angle of the corner line 69, which is parallel to the inclined surface 71, is to the upper plane 49 and the lower plane 57, the lower the step difference between the upper rack 37 and the lower rack 39 becomes, and the closer it is to a right angle, the higher the step difference between the upper rack 37 and the lower rack 39 becomes.

[0035] As shown in Figures 3 and 10, the pair of paper guides 21 are linked by a pair of rack gears 31 and a pinion gear 33 along the inclined surface 71 defined by the upper rack 37 and lower rack 39 of the pair of rack gears 31, and are operated by the user via the operating unit 63 in the horizontal direction (X-axis direction).

[0036] In other words, of the two stepped planes (upper plane 49 and lower plane 57) of the stepped 68, the lower rack 39 located on the lower plane 57 has an overhanging portion 73 that extends beyond the corner line 69 compared to the upper rack 37. Therefore, the pair of paper guides 21 move in conjunction with each other, sliding in the X-axis direction along an inclined wall surface (inclined surface 71) that is approximately parallel to the corner line 69 connecting the corners of the stepped 68. That is, the pair of paper guides 21 open and close along an inclined surface defined by a straight line parallel to the line connecting the first corner 65 and the second corner 67 and a first direction (positive X-axis direction).

[0037] With such a configuration, the printer device 1 according to this embodiment includes a pair of rack gears 31 and a pinion gear 33 fitted to the pair of rack gears 31, each having a pair of paper guides 21 arranged in a stepped manner 68 at different heights along the vertical direction to support the sides of a roll of continuous paper S. The pair of paper guides 21 are linked horizontally by the pair of rack gears 31 and the pinion gear 33 along an inclined surface 71 defined by the upper rack 37 and lower rack 39 of the pair of rack gears 31.

[0038] At this time, the inclined surface 71 is parallel to the corner line 69 that connects the first corner 65 located at the end in the second direction in the upper plane 49 where the upper rack 37 is arranged, and the second corner 67 located at the end in the second direction in the lower plane 57 where the lower rack 39 is arranged.

[0039] Furthermore, according to the printer device 1 of this embodiment, the operating unit 63 for operating the opening and closing movement of the pair of paper guides 21 is provided on the upper part of the upper paper guide 211, which is located in the upper rack 37. At this time, as shown in Figure 10, the operating unit 63 protrudes upward from the upper end TE of the lower cover 3.

[0040] Based on these considerations, according to the printer device 1 of this embodiment, the rack and pinion 35 is arranged at different heights in a stepped configuration 68, a portion of the upper paper guide 211 attached to the upper rack 37 located at the top of the stepped configuration 68 is designated as the operating section 63, the upper paper guide 211 is provided at a position offset to the TD side in the paper transport direction, and is attached to an upper mounting section 40 extending from the back side opposite to the teeth of the upper rack 37 toward the paper transport direction. As a result, the sliding portion related to the sliding of the paper guide 21 is located near the operating section 63. That is, since the operating section 63 is located near the sliding portion having the upper rack 37, the user can smoothly move the paper guide 21 via the operating section 63.

[0041] Based on the above, the printer device 1 according to this embodiment allows for the installation of an operating unit 63 that can be operated without interfering with the roll paper PR near the slide unit, and also enables the printer device 1 to be miniaturized.

[0042] Furthermore, according to the printer device 1 of this embodiment, an elastic body 55 is provided to bias the upper rack 37 in the direction toward the pinion gear 33 from the upper mounting portion 41 of the upper rack 37 (X-axis negative direction). As a result, the user can set the roll paper PR into the storage portion 17 with a simple operation of moving the operating portion 63 provided on the upper rack 37 in the X-axis positive direction.

[0043] Based on the above, the printer device 1 according to this embodiment can reduce the number of parts and mold work compared to manufacturing a frame in which, for example, the width of the rack and pinion 35 in the short axis of the rack and pinion 35, i.e., in the plane perpendicular to the pinion rotation axis 43 of the pinion gear 33, is tilted from the horizontal plane in the paper transport direction TD, thereby enabling the printer device 1 to be manufactured at a low cost.

[0044] In addition, with this printer device 1, the operating section 63 can be positioned near the slide section, protruding upward (in the positive Z-axis direction) from the upper end of the lower cover 3, without having to provide the operating section 63 near the bottom surface of the lower cover 3. Therefore, when attaching or detaching the roll paper PR to the storage section 17, no space is required for the user's fingers or the like to be inserted into the storage section 17. As a result, with this printer device 1, the printer body 11 can be made smaller. Furthermore, with this printer device 1, user access to the operating section 63 is improved, thus improving operability when attaching or detaching the roll paper PR to the storage section 17.

[0045] The present invention is not limited to the above embodiments and various modifications are possible. The upper mounting portion 40 and the lower mounting portion 41 used in the first embodiment may be offset in the direction opposite to the tooth rows arranged on the pair of racks or in the X-axis direction from the pair of racks.

[0046] Figure 11 shows a modified example in which the upper rack 37 and lower rack 39 of the rack and pinion are constructed with the same shape. In Figure 11(a), the upper mounting portion 40 of the rack and pinion 35 is offset toward the paper transport direction (negative Y-axis direction) on the upper rack 37. In contrast, the lower mounting portion 41 is offset toward the positive Y-axis direction on the lower rack 39.

[0047] In Figure 11(b), the upper mounting portion 40 of the rack and pinion 35 has a smaller offset in the paper transport direction (negative Y-axis direction) on the upper rack 37 than in Figure 11(a). The lower mounting portion 41 has a smaller offset in the reverse paper transport direction (positive Y-axis direction) on the lower rack 39 than in Figure 11(a).

[0048] The upper mounting section 40 is offset in the direction opposite to the tooth arrangement on the pair of racks (towards the paper transport direction), which brings the operating section 63 closer to the sliding section than in the configuration described in the first embodiment. As a result, the force transmitted from the operating section 63 is transmitted in the X-axis direction, making the rack less likely to bend, thereby suppressing friction and improving operability.

[0049] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of Symbols]

[0050] 1. Printer device 3. Lower cover 5 Outlet 7 Top cover 9 Core section 11. Printer body 13 Thermal Head 15 Platen Roller 17. Detention Unit 21 Paper Guide 31 Pair of rack gears 33 Pinion Gear 35 Rack and Pinion 37 Upper rack 39 Lower rack 40 Upper mounting section 41 Lower mounting section 43 Pinion rotation axis 45 Rack and Pinion Cover 47 frames 49 Upper plane 51 grooves for sliding 53 Ribs 55 Elastic body 57 Lower plane 59. Grooves for sliding 61 Rib 63 Operation section 65 1st corner 67 Second corner 68 Staircase 69. Straight corner 71 Slope 73. Overhang

Claims

1. A concave storage section for accommodating rolls of continuous paper, A pair of rack gears having teeth arranged in a stepped manner on the paper transport direction side of the continuous paper stored in the storage section, with teeth arranged in a first direction perpendicular to and horizontal to the paper transport direction, facing each other; A pinion gear is positioned between the pair of rack gears and fits into the tooth arrangement of the pair of rack gears, A rack and pinion cover having an inclined surface facing the pair of rack gears and the pinion gear, A pair of paper guides are provided at one end of the upper rack gear in the first direction and at the other end of the lower rack gear in the first direction, and which move in the first direction by opening and closing in the first direction by the pair of rack gears and the pinion gear, thereby supporting the side surface of the continuous paper housed in the housing. Of the pair of paper guides, the paper guide provided on the upper rack gear has an operating unit for opening and closing it, The mounting portion has an upper mounting portion extending from the upper rack gear and a lower mounting portion extending from the lower rack gear, The mounting portion is such that the straight line connecting the first end of the upper end face of the upper mounting portion in the second direction, which is perpendicular to the first direction and the second direction which is perpendicular to the first direction and horizontal, on the side of the paper transport direction in the second direction, and the second end of the lower end face of the lower mounting portion in the third direction, which is opposite to the paper transport direction in the second direction, follows the inclined surface of the rack and pinion cover. The mounting portion extends in the second direction, The mounting portion attaches the pair of paper guides to the rack gear. Printer device.

2. The upper plane on which the upper rack gear is arranged has a first corner at the end opposite to the paper transport direction in the second direction, The lower plane on which the lower rack gear is arranged has a second corner at the end opposite to the paper transport direction in the second direction, The pair of paper guides move in an inclined surface of the rack and pinion cover parallel to the straight line connecting the first corner and the second corner. The printer device according to claim 1.

3. Of the pair of paper guides, the paper guide provided on the upper rack gear has an operating unit for opening and closing the paper guide at its upper part. The printer device according to claim 1.

4. In the mounting portion, the upper mounting portion extending from the upper rack gear extends toward the paper guide attached to the upper rack gear, The lower mounting portion extending from the lower rack gear extends toward the paper guide attached to the lower rack gear. The printer device according to claim 1.

5. The mounting portion further includes an elastic body that biases the upper rack gear in the direction from the upper rack gear toward the pinion gear. A printer device according to any one of claims 1 to 4.

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