Printer

Abstract

To provide a printer that can contribute to reducing the influence of noise from a head harness on a display harness.SOLUTION: A printer 1 comprises an enclosure and an opening / closing cover 3. A fitting part to which a medium is fitted is provided on the enclosure. The opening / closing cover 3 rotates around a turning shaft 71 to open and close the fitting part. The opening / closing cover 3 is provided with a head 17 and a display 6. The enclosure is provided with a substrate 21 that controls the head 17 and the display 6. The printer 1 further comprises a head harness 45 and a display harness 47. The head harness 45 electrically connects the head 17 to the substrate 21 and is arranged to pass on the right side in a lateral direction with respect to the center of the fitting part in the lateral direction. The display harness 47 electrically connects the display 6 to the substrate 21 and is arranged to pass on the left side in the lateral direction with respect to the center of the fitting part in the lateral direction.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a printer. [Background technology]

[0002] The printer in Patent Document 1 includes a main body case, a main board, an opening / closing cover, a thermal head, and a head harness. The main board that controls the operation of the printer is disposed on the bottom of the main body case. The opening / closing cover opens and closes the main body case with a hinge. The thermal head is provided on the opening / closing cover. The head harness straddles the hinge and electrically connects the main board and the thermal head. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-267534 Summary of the Invention [Problem to be solved by the invention]

[0004] It is possible to provide a display on the opening and closing cover of the printer. In this case, a separate display harness is required to electrically connect the display on the opening and closing cover to the main board on the main body case. If the display harness is wired close to the head harness, there is a possibility that noise will be transferred from the head harness to the display harness.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a printer which contributes to reducing the effect of noise from a head harness on a display harness. [Means for solving the problem]

[0006] The printer of the present invention is a printer that prints on a medium, and comprises: a housing in which a mounting section is provided, which is a space that opens upward in the vertical direction, and in which the medium is mounted; and an opening / closing cover that is connected to the housing via a pivot axis that extends in a left-right direction perpendicular to the vertical direction, and opens and closes the mounting section by rotating around the pivot axis, the opening / closing cover being provided with a head that prints on the medium and a display that displays information, and the housing being provided with a board that controls the head and the display, and the printer further comprises a head harness that electrically connects the head and the board, and is wired to pass through one side in the left-right direction with respect to the center of the mounting section in the left-right direction, and a display harness that electrically connects the display and the board, and is wired to pass through the other side in the left-right direction with respect to the center of the mounting section in the left-right direction.

[0007] In the above printer, the display harness is wired away from the head harness in the left-right direction. Therefore, noise from the head harness is less likely to be transmitted to the display harness. Therefore, the printer contributes to reducing the effect of noise from the head harness on the display harness.

[0008] In the printer according to the present invention, the mounting section has a support shaft extending in the left-right direction and is equipped with a support section for supporting the rolled medium, and in a front-to-rear direction perpendicular to the up-down direction and the left-to-right direction, the head, the support shaft, and the rotation shaft are arranged in this order from front to rear, and the head harness and the display harness are each wired so as to intersect with a specific area, and the specific area may be a plane passing through the rotation shaft, and may be an area between the support shaft and the rotation shaft in the front-to-rear direction in a virtual plane perpendicular to the up-down direction. Since the head harness and the display harness pass through the specific area, in the front-to-rear direction, each harness does not rotate. Axis This means that the harnesses do not get in the way of opening and closing the opening cover, and do not impede the opening and closing operation.

[0009] In the printer according to the present invention, the opening / closing cover includes a cylindrical first cover extending in the vertical direction between a position below the pivot shaft and a position above the pivot shaft, the first cover being cylindrically configured by a base that houses the display harness and opens to one side in the horizontal direction, and a lid that closes the opening of the base, and the lid may be press-fitted into the base from one side in the horizontal direction with the display harness housed in the base. Pressing the lid into the base stabilizes the horizontal position of the display harness within the first cover. This allows the first cover to ensure a safe distance from static electricity to the display harness. Also, an operator can easily attach the lid to the base.

[0010] In the printer according to the present invention, the opening / closing cover includes a roll cover to which the display is attached, and a base cover to which the head is attached and which is attached inside the roll cover, and the printer further includes a second cover that is detachable from the opening / closing cover and extends in the vertical direction between a position below the pivot shaft and a position above the pivot shaft in the vertical direction, and covers the head harness, and the base cover may be provided with an engaged portion, and the second cover may be provided with an engaging portion that can be engaged with the engaged portion from the lower side in the vertical direction. In the printer, the second cover can be attached to the base cover after the base cover is attached to the roll cover. Therefore, the operator can easily handle the head harness. Also, the second cover is positioned in the vertical direction by the engaging portion engaging with the engaged portion from the lower side.

[0011] In the printer according to the present invention, the base cover may be provided with an engagement plate, and the second cover may be provided with a hook that engages with the engagement plate from the front side in a front-rear direction perpendicular to the up-down direction and the left-right direction when the engagement portion is engaged with the engaged portion. The second cover is positioned not only in the up-down direction but also in the front-rear direction by the hook engaging with the engagement plate from the front side. Therefore, the second cover allows the head harness to be easily handled.

[0012] In the printer according to the present invention, the opening / closing cover may be provided with a key panel having physical keys for inputting information, and the printer may further include a key panel harness that electrically connects the key panel and the board and is wired to pass through the one side in the left-right direction with respect to the center of the mounting part in the left-right direction. Since the display harness is separated from the key panel harness to the other side in the left-right direction, the printer can reduce the effect of noise from the key panel harness on the display harness.

[0013] In the printer according to the present invention, the openable cover may be provided with a sensor that detects the medium, and the printer may further include a sensor harness that electrically connects the sensor and the board and is wired to pass through the one side in the left-right direction with respect to the center of the mounting part in the left-right direction. Since the display harness is separated from the sensor harness to the other side in the left-right direction, the printer can reduce the effect of noise from the sensor harness on the display harness.

[0014] In the printer according to the present invention, the display harness may be a flexible flat cable, and the printer can reduce the effect of noise from the head harness on the flexible flat cable. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view of a printer 1. [Diagram 2]FIG. 2 is a perspective view of the printer 1 with the access cover 3 open. [Diagram 3] FIG. 2 is a perspective view of the inside of the printer 1. [Figure 4] 2 is a perspective view of the inside of the printer 1 with the base housing 33 omitted. [Diagram 5] 2 is a perspective view of the inside of the printer 1 with the base housing 33 omitted. [Figure 6] 13 is a right side view showing a state in which a head harness 45 is wired to hooks 33A and 33B of a base housing 33. FIG. [Figure 7] 2 is an enlarged perspective view of a first cover 25. FIG. [Figure 8] FIG. 3 is an enlarged perspective view of a guide portion 35. [Figure 9] 2 is a cross-sectional view of the first cover 25 taken along the line AA. FIG. [Figure 10] 4 is a cross-sectional view of the first cover 25 taken along the line BB. FIG. [Figure 11] 2 is a cross-sectional view of the printer 1 taken along the line CC. [Figure 12] 11A and 11B are diagrams showing a process of attaching the second cover 29 to the guide portion 35. [Figure 13] 13 is a diagram showing the process of attaching the second cover 29 to the guide portion 35, which is a continuation of FIG. 12. [Figure 14] 13A to 13C are diagrams showing the process of attaching the second cover 29 to the guide portion 35. [Figure 15] 15 is a diagram showing the process of attaching the second cover 29 to the guide portion 35, which is a continuation of FIG. 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] An embodiment of the present invention will be described with reference to the drawings. In the following description, the left and right, front and back, and top and bottom are indicated by arrows in the drawings. For the sake of convenience, the orientation of the printer 1 in the drawings will be described in the directions indicated by the arrows in the drawings.

[0017] The printer 1 shown in Fig. 1 is a thermal printer. The printer 1 can be driven by power from an external power source such as an AC adapter (not shown). The printer 1 prints characters such as letters and figures on a print medium (hereinafter simply referred to as "medium") based on print data.

[0018] The printer 1 will be described with reference to Figs. 1 to 3. The printer 1 is a generally rectangular parallelepiped that is long in the front-to-rear direction. The printer 1 is made up of a housing 10 and an opening / closing cover 3. The housing 10 has a bottom plate 11, a front plate 12, a rear plate 13, a left plate 14, and a right plate 15. The housing 10 opens upward. The housing 10 is opened and closed by the opening / closing cover 3. Details of the opening / closing cover 3 will be described later.

[0019] A substrate 21 is provided on the upper surface of the bottom plate 11 of the housing 10. The substrate 21 controls the overall operation of the printer 1. For example, the substrate 21 controls the head 17 and the display 6, which will be described later. The substrate 21 extends in a direction perpendicular to the up-down direction. In other words, the substrate 21 extends in the front-rear and left-right directions. The substrate 21 is a plate-like shape that is long in the front-rear direction.

[0020] The board 21 includes connectors 21A, 21B, 21C, 21D, etc. (see FIG. 5). Connectors 21A to 21C are provided on the top surface of the board 21. Connector 21A is provided on the right end of the board 21 and in the center in the front-to-rear direction. Connector 21B is provided on the right end of the board 21 and behind connector 21A. Connector 21C is provided on the right end and front end of the board 21. Connector 21D is provided on the bottom surface of the board 21. Connector 21D is provided on the left end and rear end of the board 21.

[0021] An AC adapter jack 38 (see FIG. 5) is provided at the rear end of the board 21. The AC adapter jack 38 is exposed to the outside of the housing 10 from the rear plate 13. The AC adapter jack 38 is capable of receiving power from an AC adapter (not shown).

[0022] A base housing 33 is provided inside the housing 10 and above the substrate 21 (see Figs. 2 and 3). The base housing 33 is provided from the front plate 12 to the rear plate 13 of the housing 10. The base housing 33 is recessed downward from the center to the rear end. A mounting section 8 (see Fig. 2) is provided in the recessed portion of the base housing 33. The mounting section 8 is a space that opens upward in the up-down direction. A medium is mounted in the mounting section 8. A pair of support sections 81L, 81R is provided in the mounting section 8. The pair of support sections 81L, 81R are disposed apart from each other in the left-right direction. The pair of support sections 81L, 81R support the medium wound in a roll shape. The pair of support sections 81R, 81L each include a support shaft 82. The support shaft 82 is an axis that extends in the left-right direction. The roll-shaped medium rotates around the support shaft 82.

[0023] A platen roller 18 (see FIG. 2) is rotatably supported at the front end of the base housing 33. The platen roller 18 extends in the left-right direction. The platen roller 18 rotates by the power of a motor (not shown). The platen roller 18 transports the medium forward from the mounting section 8. An ejection opening 9 (see FIG. 2) is provided at the front end of the base housing 33, in front of the platen roller 18. The ejection opening 9 extends in the left-right direction. The ejection opening 9 ejects the printed medium to the outside of the housing 10.

[0024] Hooks 33A and 33B (see FIG. 6) are provided at the rear end of the right side surface of the base housing 33. The hooks 33A and 33B are arranged on the lower front side of the second cover 29, which will be described later. The hook 33B is arranged behind the hook 33A. The hooks 33A and 33B are L-shaped. The hook 33A extends to the right from the base housing 33 and extends downward from its right end. The hook 33B extends to the right from the base housing 33 and extends upward from its right end.

[0025] The opening-closing cover 3 will be described with reference to Figs. 4 to 10. Left and right hinge portions 7R, 7L (see Fig. 4) are provided at the rear end portion of the opening-closing cover 3. The opening-closing cover 3 is connected to the rear end portion of the housing 10 via the hinge portions 7R, 7L. The hinge portions 7R, 7L have a rotation shaft 71 extending in the left-right direction. The opening-closing cover 3 rotates around the rotation shaft 71. This allows the opening-closing cover 3 to open and close the mounting portion 8.

[0026] The opening / closing cover 3 comprises a roll cover 31 (see FIG. 2) and a base cover 32 (see FIG. 2). The roll cover 31 is cuboid-shaped and opens downwards. An operation unit 4 is attached to the top surface of the roll cover 31. The operation unit 4 comprises a key panel 5 and a display 6. The display 6 is disposed behind the key panel 5. The key panel 5 has physical keys capable of inputting information. The key panel 5 accepts operations by the user. The display 6 is, for example, a touch panel. The display 6 accepts operations by the user and displays information.

[0027] The base cover 32 is attached to the inside of the roll cover 31 (see FIG. 2). The base cover 32 is recessed upward from the center to the rear end in the front-rear direction. The base cover 32 includes a thermal head (hereinafter simply referred to as "head 17"), a sensor 16, a first cover 25, a guide portion 35, and a second cover 29.

[0028] The head 17 is supported at the front end of the base cover 32 (see FIG. 2). The head 17 extends in the left-right direction. When the opening / closing cover 3 is closed, the head 17 faces the platen roller 18 from above. The head 17 prints on the medium with the medium sandwiched between the head 17 and the platen roller 18. In the front-to-rear direction, the head 17 (see FIG. 2), support shaft 82 (see FIG. 11), and rotating shaft 71 (see FIG. 11) are aligned in this order from front to rear.

[0029] The sensor 16 is provided at the front end of the base cover 32 (see FIG. 2). The sensor 16 is provided on the rear side of the head 17. When the opening / closing cover 3 is closed, the sensor 16 is disposed between the head 17 and the support shaft 82 in the front-rear direction. The sensor 16 is mounted on a sensor board (not shown). The sensor 16 is, for example, a reflective optical sensor. The sensor 16 detects the medium.

[0030] The first cover 25 extends downward from the rear end of the left side surface of the base cover 32 (see Figs. 4 and 5). In detail, the first cover 25 extends in the vertical direction from the upper end to the center of the first cover 25, and curves in an arc shape rearward from the center to the lower end of the first cover 25 around the rotation shaft 71 of the hinge portion 7L. The first cover 25 is cylindrical. The first cover 25 covers a display harness 47, which will be described later. Details will be described later.

[0031] The first cover 25 is configured in a cylindrical shape by a base 251 and a lid 252 (see Figs. 4 and 5). The base 251 includes a plate 251B (see Fig. 5) and side walls 251F and 251R (see Fig. 4). The plate 251B extends in the vertical direction from the upper end to the center of the plate 251B, and curves in an arc shape backward from the center to the lower end of the plate 251B around the rotation shaft 71 of the hinge part 7L. The side wall 251F extends leftward from the upper part to the lower part of the front end of the plate 251B. The side wall 251R extends leftward from the upper part to the lower part of the rear end of the plate 251B. When viewed from above, the base 251 is formed in a C-shape facing leftward. That is, the base 251 opens to the left.

[0032] A pair of walls 255, 256 are provided inside the base 251 (see FIG. 9). The wall 255 extends leftward from the front end of the plate 251B (see FIG. 8). The wall 255 extends along the side wall 251F of the base 251. The wall 256 extends leftward from the rear end of the plate 251B (see FIG. 8). The wall 256 extends along the side wall 251R of the base 251.

[0033] The cover 252 includes a plate 252B (see FIG. 10) and insertion plates 252F and 252R (see FIG. 9). The shape of the plate 252B corresponds to the shape of the plate 251B (see FIG. 8) of the base 251. The plate 252B is provided with protrusions 261-266 (see FIG. 10). The protrusion 261 protrudes forward from an upper portion of the front end of the plate 252B. The protrusion 262 protrudes forward from a central portion in the up-down direction of the front end of the plate 252B. The protrusion 263 protrudes obliquely downward from a lower portion of the front end of the plate 252B. The protrusion 264 protrudes backward from an upper portion of the rear end of the plate 252B. The protrusion 265 protrudes backward from a central portion in the up-down direction of the rear end of the plate 252B. The protrusion 266 protrudes obliquely upward and rearward from the lower part of the rear end portion of the plate 252B.

[0034] The insertion plate 252F (see FIG. 9) extends rightward from the upper to lower part of the front end part of the plate 252B (see FIG. 10). The insertion plate 252R (see FIG. 9) extends rightward from the upper to lower part of the rear end part of the plate 252B (see FIG. 10).

[0035] The lid 252 is attached to the base 251 from the left side (see FIG. 4). The insertion plate 252F of the lid 252 is disposed between the side wall 251F of the base 251 and the wall 255 (see FIG. 9). The insertion plate 252R of the lid 252 is disposed between the side wall 251R of the base 251 and the wall 256 (see FIG. 9).

[0036] The guide portion 35 is provided at the rear end of the right side surface of the base cover 32 (see FIG. 8). The guide portion 35 guides the harnesses 41, 43, 45 described below. The guide portion 35 includes a guide surface 322, a protrusion 325, an engagement plate 323, and an engaged portion 321. The guide surface 322 extends downward from the rear end of the right side surface of the base cover 32. The lower end of the guide surface 322 extends to the front side of the hinge portion 7R. The guide surface 322 faces to the right. The guide surface 322 is disposed between the support shaft 82 (see FIG. 2) of the mounting portion 8 and the hinge portion 7R in the front-rear direction.

[0037] The protrusion 325 is provided on the rear side of the guide surface 322. The protrusion 325 protrudes rightward from the right side surface of the base cover 32. The protrusion 325 is rectangular parallelepiped-shaped. The protrusion 325 extends vertically along the center of the guide surface 322. The front surface of the protrusion 325 constitutes a sliding surface 325A. The sliding surface 325A extends vertically along the center of the guide surface 322.

[0038] An engagement plate 323 is provided on the protruding portion 325. The engagement plate 323 is provided on a lower portion of a sliding surface 325B of the protruding portion 325. The engaged portion 321 is disposed on the front side of the upper end portion of the guide surface 322. The engaged portion 321 protrudes rightward from the right side surface of the base cover 32. The engaged portion 321 is substantially cylindrical.

[0039] The second cover 29 is detachable from the opening / closing cover 3 (see FIG. 6). More specifically, the second cover 29 is attached to the guide portion 35. The attachment method will be described later. When viewed from above, the second cover 29 is C-shaped and opens to the left. The second cover 29 extends in the vertical direction from the upper end to the center of the second cover 29, and curves backward in an arc shape centered on the rotation shaft 71 from the center to the lower end.

[0040] An engaging portion 293 (see FIG. 15) is provided at the upper end of the second cover 29. The engaging portion 293 is recessed toward the rear. The engaging portion 293 has an arc shape corresponding to the shape of the engaged portion 321. The engaging portion 293 engages with the engaged portion 321 of the guide portion 35 from below (see FIG. 15). A tapered portion 294 (see FIG. 15) is provided at the upper end of the second cover 29. The tapered portion 294 inclines downward as it extends toward the rear. A hook 295 (see FIG. 15) that protrudes rearward is provided at the center in the vertical direction of the rear side of the second cover 29. The hook 295 engages with the lower end of the engaging plate 323 of the guide portion 35 (see FIG. 15).

[0041] As shown in FIGS. 4 and 5, the printer 1 further includes a key panel harness 41, a sensor harness 43, a head harness 45, and a display harness 47.

[0042] The key panel harness 41 electrically connects the key panel 5 (see FIG. 1) and the board 21. One end of the key panel harness 41 is connected to a connector (not shown) of the key panel 5. The key panel harness 41 is wired at the front end of the opening / closing cover 3, above the base cover 32, toward the right. The key panel harness 41 is wired at the right end of the opening / closing cover 3, between the base cover 32 and the roll cover 31, toward the rear. The key panel harness 41 is wired so as to pass between the second cover 29 and the guide portion 35. The key panel harness 41 is wired from the second cover 29 to the board 21 toward the front and downward. The other end of the key panel harness 41 is connected to the connector 21A. Therefore, the key panel harness 41 is wired so as to pass to the right of the center L (see FIG. 11) of the mounting portion 8 in the left-right direction.

[0043] The sensor harness 43 electrically connects the sensor 16 (see FIG. 2) and the board 21. One end of the sensor harness 43 is connected to a sensor board (not shown) of the sensor 16. The sensor harness 43 is wired to the right on the upper side of the base cover 32 at the front end of the opening / closing cover 3. The sensor harness 43 is wired to the rear between the base cover 32 and the roll cover 31 at the right end of the opening / closing cover 3. The sensor harness 43 is wired to pass between the second cover 29 and the guide portion 35. The sensor harness 43 is wired forward from the second cover 29 to the board 21. The other end of the sensor harness 43 is connected to the connector 21B. Therefore, the sensor harness 43 is wired to pass to the right of the center L (see FIG. 11) of the mounting portion 8 in the left-right direction.

[0044] The head harness 45 electrically connects the head 17 and the board 21. The head harness 45 has bifurcated left and right branching portions 45L and 45R (see FIG. 5) at one end. The left branching portion 45L is connected to the left rear end of the head 17, and the right branching portion 45R is connected to the right rear end of the head 17. The branching portions 45L and 45R then join on the upper surface of the front end of the base cover 32. After joining, the head harness 45 is wired to the right on the upper side of the base cover 32 at the front end of the opening and closing cover 3. The head harness 45 is wired rearward between the base cover 32 and the roll cover 31 at the right end of the opening and closing cover 3. The sensor harness 43 is wired downward between the second cover 29 and the guide portion 35. The head harness 45 is wired forward and downward to the board 21. The other end of the head harness 45 is connected to the connector 21C. Therefore, the head harness 45 is wired so as to pass on the right side with respect to the center L (see FIG. 11) of the mounting part 8 in the left-right direction.

[0045] The display harness 47 is, for example, a flexible flat cable. The display harness 47 electrically connects the display 6 and the substrate 21 (see FIG. 4). One end of the display harness 47 is connected to the front end of the display 6 (see FIG. 3). The display harness 47 is wired toward the left on the upper surface of the base cover 32 at the front end of the opening-closing cover 3. The display harness 47 is wired toward the rear between the base cover 32 and the roll cover 31 at the left end of the opening-closing cover 3.

[0046] The display harness 47 is wired downward inside the first cover 25. The display harness 47 is wired between the wall 255 and the wall 256 inside the first cover 25 (see FIG. 9). That is, the display harness 47 is housed in the base 251.

[0047] The display harness 47 is wired downward and forward from the first cover 25 toward the board 21. The other end of the display harness 47 is connected to the connector 21D. Thus, the display harness 47 is wired to pass on the left side of the center L of the mounting portion 8 in the left-right direction (see FIG. 11).

[0048] The specific area R will be described with reference to FIG. 11. The specific area R is an area between the support shaft 82 and the rotation shaft 71 in the front-rear direction in the cross section along the CC line (see FIG. 4). The cross section along the CC line is a plane passing through the rotation shaft 71 and is perpendicular to the up-down direction. Since the second cover 29 passes through the specific area R, the key panel harness 41, the sensor harness 43, and the display harness 47 are wired so as to intersect with the specific area R. Since the display harness 47 passes through the first cover 25, the display harness 47 is wired so as to intersect with the specific area R. As a result, the key panel harness 41, the sensor harness 43, and the head harness 45 are wired between the support shaft 82 of the support portion 81R and the rotation shaft 71 of the hinge portion 7R in the front-rear direction. The display harness 47 is wired between the support shaft 82 of the support portion 81L and the rotation shaft 71 of the hinge portion 7L in the front-rear direction.

[0049] 7 to 10, a method of attaching the lid 252 to the first cover 25 will be described. During manufacturing, a worker wires the display harness 47 from the display 6 toward the first cover 25. The worker wires the display harness 47 inside the base 251 of the first cover 25. In this case, the worker wires the display harness 47 between the wall 255 and the wall 256 of the base 251.

[0050] An operator attaches the lid 252 from the left side to the base 251. The insertion plate 252F of the lid 252 is inserted between the side wall 251F and the wall 255. The insertion plate 252R of the lid 252 is inserted between the side wall 251R and the wall 256.

[0051] The worker pushes the lid 252 all the way into the base 251. In this case, the convex parts 261-263 of the plate 252B move to the right while contacting the side wall 251F between the side wall 251F and the wall 255. Also, the convex parts 264-265 of the plate 252B move to the right while contacting the side wall 251R between the side wall 251R and the wall 256. As a result, the lid 252 is press-fitted into the base 251 at six press-fit positions P1-P6 (see FIG. 10). Therefore, the lid 252 is attached to the base 251 with the display harness 47 housed in the base 251. Therefore, the position of the display harness 47 in the left-right direction is stabilized within the first cover 25. Therefore, the first cover 25 can ensure a safe distance from static electricity to the display harness 47. Therefore, the first cover 25 can reduce the possibility that the display 6 and the board 21 are damaged by static electricity. Moreover, an operator can easily attach the lid 252 to the base 251.

[0052] Here, the walls 255 and 256 are sandwiched from the front and rear by the insertion plates 252F and 252R of the lid 252. Furthermore, the insertion plates 252F and 252R are sandwiched from the front and rear by the side walls 251F and 251R of the base 251. Therefore, the display harness 47 is not easily affected by static electricity. Therefore, the first cover 25 can reduce the possibility that the display 6 and the board 21 will be damaged by static electricity.

[0053] A method of attaching the second cover 29 to the guide portion 35 will be described with reference to Figs. 11 to 15. The worker connects the key panel harness 41, the sensor harness 43, and the head harness 45 to the key panel 5, the sensor board (not shown) of the sensor 16, and the head 17, respectively. The worker wires the harnesses 41, 43, and 45 along the guide portion 35 of the base cover 32. In this state, the worker attaches the base cover 32 to the roll cover 31.

[0054] The worker places the second cover 29 in an oblique position below the guide portion 35, with the lower end portion inclined forward with respect to the upper end portion (see FIG. 12). The worker slides the tapered portion 294 of the second cover 29 on the sliding surface 325A to move the second cover 29 upward (see arrow A1 in FIG. 12). The worker engages the engaging portion 293 at the upper end portion of the second cover 29 with the engaged portion 321 of the roll cover 31 from below (see FIG. 13). With the engaging portion 293 engaged with the engaged portion 321, the worker rotates the lower end portion of the second cover 29 backward around the engaged portion 321 as an axis in the direction indicated by arrow A2 in FIG. 13 and FIG. 14 (see FIG. 14). With the engaging portion 293 engaged with the engaged portion 321, the worker engages the hook 295 of the second cover 29 with the lower end of the engaging plate 323 from the front side (see FIG. 15). As a result, the second cover 29 is attached to the opening and closing cover 3.

[0055] As described above, the head harness 45 electrically connects the head 17 and the substrate 21, and is wired so as to pass on the right side of the center L of the mounting part 8 in the left-right direction. The display harness 47 electrically connects the display 6 and the substrate 21, and is wired so as to pass on the left side of the center L of the mounting part 8 in the left-right direction.

[0056] In the above printer 1, the display harness 47 is wired away from the head harness 45 to the left. Therefore, noise from the head harness 45 is less likely to be transmitted to the display harness 47. Therefore, the printer 1 contributes to reducing the influence of noise from the head harness 45 on the display harness 47. Therefore, the printer 1 can reduce the influence of noise, such as degradation of image quality on the touch panel and malfunction of touch operations.

[0057] The mounting unit 8 includes support portions 81L and 81R. The support portions 81L and 81R support a roll-shaped medium. The support portions 81L and 81R have a support shaft 82 extending in the left-right direction. In the front-rear direction, the head 17, the support shaft 82, and the rotation shaft 71 are arranged in this order from front to rear. The head harness 45 and the display harness 47 are each wired so as to intersect with the specific area R. The specific area R is a plane that passes through the rotation shaft 71, and is the area between the support shaft 82 and the rotation shaft 71 in the front-rear direction in a cross section taken along the CC line arrow, which is perpendicular to the up-down direction. Because the head harness 45 and the display harness 47 pass through the specific area R, In the front-rear direction, the harnesses 45, 47 are disposed forward of the rotating shaft 71. Therefore, the harnesses 45, 47 do not get in the way of opening and closing the opening-closing cover 3 and do not impede the opening and closing operation.

[0058] The first cover 25 extends in the up-down direction between a position below the pivot shaft 71 and a position above the pivot shaft 71 in the up-down direction. The first cover 25 is formed into a cylindrical shape by a base 251 and a lid 252. With the display harness 47 housed in the base 251, the lid 252 is press-fitted into the base 251. By press-fitting the lid 252 into the base 251, the first cover 25 stabilizes the position of the display harness 47 in the left-right direction. This allows the first cover 25 to ensure a safe distance from static electricity to the display harness 47. Also, an operator can easily attach the lid 252 to the base 251.

[0059] The opening / closing cover 3 includes a roll cover 31 and a base cover 32. The display 6 is attached to the roll cover 31. The head 17 is attached to the base cover 32. The base cover 32 is attached to the inside of the roll cover 31. The second cover 29 is detachable from the opening / closing cover 3. The second cover 29 extends in the vertical direction between a position below the rotation shaft 71 and a position above the rotation shaft 71 in the vertical direction. The second cover 29 covers the head harness 45. The roll cover 31 is provided with an engaged portion 321. The second cover 29 is provided with an engaging portion 293. The engaging portion 293 can engage with the engaged portion 321 from the lower side in the vertical direction. In the printer 1, the second cover 29 can be attached to the roll cover 31 after the base cover 32 is attached to the roll cover 31. Therefore, the operator can easily handle the head harness 45. Further, the second cover 29 is positioned in the up-down direction by the engaging portion 293 engaging with the engaged portion 321 from below.

[0060] An engaging plate 323 is provided on the base cover 32. A hook 295 is provided on the second cover 29. The hook 295 engages with the engaging plate 323 from the front side in the front-rear direction in a state in which the engaging portion 293 is engaged with the engaged portion 321. The second cover 29 is positioned not only in the up-down direction but also in the front-rear direction by the hook 295 engaging with the engaging plate 323 from the front side. Therefore, the second cover 29 allows the head harness 45 to be easily handled.

[0061] The opening / closing cover 3 is provided with a key panel 5. The key panel 5 has physical keys that can input information. The key panel harness 41 electrically connects the key panel 5 and the board 21, and is wired to pass to the right of the center L of the mounting part 8 in the left-right direction. Since the display harness 47 is separated from the key panel harness 41 to the left, the printer 1 can reduce the effect of noise from the key panel harness 41 on the display harness 47.

[0062] A sensor 16 that detects the medium is provided on the opening / closing cover 3. The sensor harness 43 electrically connects the sensor 16 and the board 21, and is wired to pass to the right of the center L of the mounting part 8 in the left-right direction. Because the display harness 47 is separated to the left from the sensor harness 43, the printer 1 can reduce the effect of noise from the sensor harness 43 on the display harness 47.

[0063] The display harness 47 is a flexible flat cable. The printer 1 can reduce the effect of noise from the head harness 45 on the flexible flat cable.

[0064] In the above embodiment, the right side corresponds to "one side in the left-right direction" of the present invention. The left side corresponds to "the other side in the left-right direction" of the present invention. The housing 10 and the base housing 33 correspond to the "housing" of the present invention. The cross section in the direction of the arrow CC (see Figs. 4 and 11) corresponds to the "imaginary plane" of the present invention.

[0065] The above embodiment can be further modified in various ways as described below. The various modified examples described below can be combined with each other as long as no contradiction occurs. In the above embodiment, the printer 1 is a thermal printer, but this is not limited to this. For example, the printer 1 may be an inkjet printer. In the above embodiment, the medium is wound in a roll and loaded into the loading unit 8, but this is not limited to this. For example, the printer 1 may be one that supplies fanfold paper from an external source. In the above embodiment, the printer 1 is a substantially rectangular parallelepiped, but this is not limited to this. The shape of the printer 1 can be modified as appropriate. The printer 1 may be provided with a handle that the user can hold.

[0066] In the above embodiment, the printer 1 is driven by the power of an AC adapter, which is an external power source, but this is not limited to the above. For example, a USB PD (USB Power Delivery) may be used as the external power source. Also, the printer 1 does not have to be driven by an external power source. In this case, the AC adapter jack 38 of the printer 1 may not be required. Also, the printer 1 may be driven by a battery. For example, a battery unit equipped with a battery may be attachable to the housing 10.

[0067] In the above embodiment, the display 6 is a touch panel, but is not limited to this. For example, the display 6 may be one that does not accept touch operations and only displays information. In this case, a harness for another display may be used instead of a flexible flat cable. The key panel 5 and the like may not be mounted. The key panel 5 may not be mounted.

[0068] In the above embodiment, the head harness 45 is wired to pass through the right end inside the printer 1, and the display harness 47 is wired to pass through the left end inside the printer 1, but this is not limited to the above. For example, the head harness 45 may be wired to pass through the left end inside the printer 1, and the display harness 47 may be wired to pass through the right end inside the printer 1. Also, the head harness 45 and the display harness 47 do not necessarily need to be wired to the left and right ends inside the printer 1. The display harness 47 only needs to be separated enough to be unaffected by noise from the head harness 45.

[0069] In the above embodiment, the opening / closing cover 3 is configured with the roll cover 31 and the base cover 32, but this is not limited thereto. For example, the opening / closing cover 3 may be an integrated member. The shapes of the roll cover 31 and the base cover 32 may be changed as appropriate. The key panel 5 and the display 6 are provided on the roll cover 31, but they may be provided on the base cover 32.

[0070] In the above embodiment, the display harness 47 is disposed inside the first cover 25, but this is not limited thereto. For example, the first cover 25 may not be cylindrical, but may have a configuration similar to that of the second cover 29 to protect the display harness 47. Also, the first cover 25 may not be provided. Instead of the first cover 25, for example, a hook may be provided on the front side of the hinge portion 7L. The worker may wire the display harness 47 by hanging it on the hook.

[0071] In the above embodiment, the first cover 25 is configured with the base 251 and the lid 252, but this is not limited thereto. The first cover 25 may be an integrated member. In the first cover 25, the lid 252 is press-fitted into the base 251, but this is not limited thereto. It is sufficient that the lid 252 can be attached to the base 251. In addition, the press-fitting positions P1 to P6 of the lid 252 may be changed as appropriate. The number of the press-fitting positions P1 to P6 may also be changed as appropriate. In the above embodiment, the lid 252 is press-fitted into the base 251 from the left, but this is not limited thereto. The direction in which the lid 252 is press-fitted into the base 251 may be changed as appropriate.

[0072] In the above embodiment, the second cover 29 is C-shaped, but is not limited thereto. For example, the second cover 29 may be configured like the first cover 25. The second cover 29 may not be detachable from the base cover 32. In this case, the second cover 29 may be configured integrally with the guide portion 35. The second cover 29 may not be provided. Instead of the second cover 29, for example, a hook may be provided on the front side of the hinge portion 7R. The worker may wire the head harness 45 or the like by hanging it on the hook.

[0073] In the above embodiment, the sensor 16 is of a reflective type, but is not limited to this. The sensor 16 may be of a transmissive type. The position of the sensor 16 may be changed as appropriate within the opening and closing cover 3. In addition, the sensor 16 and the like may not be mounted. [Explanation of symbols]

[0074] 1. Printer 3 Opening and closing cover 5 Key Panel 6 Display 8. Mounting Part 10. Chassis 16 Sensors 17 Head 21 Substrate 25 First Cover 29 Second Cover 31 Roll Cover 32 Base cover 33 Base chassis 41 Key panel harness 43 Sensor harness 45 Head Harness 47 Display Harness 71 Rotating shaft 82 Support shaft 81L, 81R support part 251 Base 252 Lid 293 Engagement part 295 Hook 321 Engaged part 323 Engagement plate R Specific area L center

Claims

1. A printer that prints on a medium, a housing having a space that opens upward in a vertical direction and has a mounting portion in which the medium is mounted; an opening / closing cover that is connected to the housing via a rotation shaft that extends in a left-right direction perpendicular to the up-down direction and that opens and closes the mounting unit by rotating around the rotation shaft; Equipped with The opening and closing cover has: A head for printing on the medium; A display that displays information is established, The housing includes: A board for controlling the head and the display is established, The printer further comprises: a head harness that electrically connects the head and the substrate and is wired to pass on one side in the left-right direction with respect to a center of the mounting portion in the left-right direction; a display harness that electrically connects the display and the substrate and is wired so as to pass through the other side in the left-right direction with respect to the center of the mounting portion in the left-right direction; Equipped with A printer characterized by:

2. the mounting unit includes a support shaft extending in the left-right direction and a support unit configured to support the roll-shaped medium; the head, the support shaft, and the rotation shaft are arranged in this order from the front to the rear in a front-rear direction perpendicular to the up-down direction and the left-right direction, the head harness and the display harness are each wired to intersect with a specific region; The specific area is a virtual plane that passes through the pivot axis and is perpendicular to the up-down direction, and is an area between the support axis and the pivot axis in the front-rear direction.

2. The printer according to claim 1.

3. the opening / closing cover includes a cylindrical first cover extending in the vertical direction between a position below the pivot shaft and a position above the pivot shaft in the vertical direction, The first cover is a base that houses the display harness and is open to one side in the left-right direction; a lid for closing the opening of the base; The cylindrical shape is formed by With the display harness housed in the base, the lid is press-fitted into the base from one of the left and right directions.

2. The printer according to claim 1.

4. The opening and closing cover is a roll cover having the display attached thereto; a base cover to which the head is attached and which is attached to the inside of the roll cover; Equipped with The printer further comprises: a second cover that is detachable from the opening / closing cover and extends in the vertical direction between a position below the pivot shaft and a position above the pivot shaft in the vertical direction, the second cover covering the head harness; Equipped with The base cover is provided with an engaged portion, The second cover is provided with an engaging portion that can be engaged with the engaged portion from a lower side in the up-down direction.

2. The printer according to claim 1.

5. The base cover is provided with an engagement plate, The second cover is provided with a hook that engages with the engagement plate from a front side in a front-rear direction perpendicular to the up-down direction and the left-right direction when the engagement portion is engaged with the engaged portion.

5. The printer according to claim 4.

6. The opening and closing cover is provided with a key panel having physical keys for inputting information; The printer further comprises: a key panel harness that electrically connects the key panel and the board and is wired to pass through the one side in the left-right direction with respect to the center of the mounting portion in the left-right direction; Equipped with 2. The printer according to claim 1.

7. The opening / closing cover is provided with a sensor for detecting the medium, The printer further comprises: a sensor harness that electrically connects the sensor and the circuit board and is wired to pass through the one side in the left-right direction with respect to the center of the mounting portion in the left-right direction; Equipped with 2. The printer according to claim 1.

8. The display harness is a flexible flat cable.

2. The printer according to claim 1.

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