printer

Abstract

To provide a printer capable of smoothly feeding paper even when arranged in a different posture.SOLUTION: A printer includes: a first surface; a second surface which faces the first surface and can ground on a ground contact surface; a body case provided with a third surface connecting the first surface and the second surface; a paper feeding part which is provided on the second surface and feeds media to an inside of the body case; a printing part which is provided inside the body case and executes printing to the media fed by the paper feeding part; and a paper discharge part which discharges the media printed by the printing part to the outside of the body case. The second surface is provided with a recess recessed in depth at least equal to or more than the thickness of the media toward the first surface side across the width direction of the fed media between the third surface and the paper feeding part.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] The printer in Patent Document 1 includes a housing. An insertion slot for inserting a print medium is provided on the top surface of the housing. A user inserts the print medium through the insertion slot while the bottom surface of the housing is in contact with the ground. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-56704 Summary of the Invention [Problem to be solved by the invention]

[0004] The printer is not designed to be used with its top surface in contact with a ground surface, so if the printer is placed in a different position, it may not be able to feed paper smoothly.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a printer that can smoothly feed paper even when placed in different positions. [Means for solving the problem]

[0006] The present specification discloses, for example, the following aspects.

[0007] The printer of the present invention comprises a main body case having a first surface, a second surface opposite the first surface and capable of contacting a ground surface, and a third surface connecting the first surface and the second surface; a paper feed unit provided on the second surface for feeding a medium into the main body case; a printing unit provided inside the main body case for printing on the medium fed from the paper feed unit; and a paper discharge unit for discharging the medium printed by the printing unit to the outside of the main body case, and is characterized in that the second surface has a recess provided between the third surface and the paper feed unit across the width of the medium being fed, recessed toward the first surface to a depth at least equivalent to the thickness of the medium.

[0008] The user can feed media through the recess while the second surface is in contact with the ground surface, allowing the printer to smoothly feed media even when placed in different positions.

[0009] In the printer according to the present invention, the recess may include a guide surface that guides the medium from the third surface toward the paper feed unit, and the guide surface may be curved in a direction from the first surface toward the second surface. For example, if the medium is roll paper R, the paper can be fed smoothly even when the roll paper R is running low.

[0010] In the printer according to the present invention, the recess may include a guide surface that guides the medium from the third surface side toward the paper feed unit, and the guide surface may extend linearly from the third surface side toward the paper feed unit. For example, if the medium is a single sheet, the single sheet is less likely to curl. The single sheet follows the linearly extending guide surface. Therefore, the user can smoothly feed the medium M via the linearly extending guide surface.

[0011] In the printer according to the present invention, the recess may have a guide surface that guides the medium from the third surface side toward the paper feed unit, and the guide surface may have a first portion that extends parallel to the second surface from the third surface side toward the paper feed unit, and a second portion that extends from the end of the first portion on the paper feed unit side and bends toward the paper feed unit. For example, if the medium is a cut sheet, the cut sheet is less likely to curl. Therefore, the cut sheet can be easily fed from the paper feed unit. fart The medium is guided along the second portion of the guide surface that extends linearly toward the first portion. This allows the user to feed the medium smoothly via the second portion. For example, if the medium is roll paper, the roll paper is prone to curling. As the first portion and the second portion are bent, the roll paper is guided along the guide surface. This allows the user to feed the medium smoothly via the guide surface.

[0012] In the printer according to the present invention, the recess may be detachable from the main body case, allowing a user to attach a recess suited to the type of media to the printer.

[0013] The printer according to the present invention may further include a pair of guides that are provided in the recess, protrude in a direction opposite to the recess of the recess, and regulate the widthwise position of the medium relative to the paper feed unit. The pair of guides allows a user to stably feed the medium into the paper feed unit.

[0014] In the printer according to the present invention, the protruding length of the pair of guides may be shorter than the depth of the recess, which prevents the pair of guides from interfering with the ground surface when the user places the second surface in contact with the ground surface.

[0015] In the printer according to the present invention, the length by which the pair of guides protrude may be longer than the depth to which the recesses are recessed. When the first surface is placed against a ground surface, the user can feed the medium stably because the pair of guides are long.

[0016] In the printer according to the present invention, the pair of guides may be detachably attached to the recess, allowing a user to attach the pair of guides that are suitable for the printer's posture to the recess.

[0017] In the printer according to the present invention, the first surface may be capable of being placed in contact with the ground surface, and the first surface and the second surface may be parallel to each other. A user can feed the medium into the paper feed unit with the first surface in contact with the ground surface. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 2 is a perspective view of the printer 1 in the first position. [Figure 2] FIG. 2 is a perspective view of the printer 1 in a second position. [Figure 3] FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 4] 1A is a cross-sectional view showing how the printer 1 is used in the first position, and FIG. 1B is a cross-sectional view showing how the printer 1 is used in the second position. [Figure 5] FIG. 10 is a cross-sectional view showing a guide surface 23B of a modified example. [Figure 6] FIG. 10 is a cross-sectional view showing a guide surface 23C of a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0019] In the following explanation, the left and right, front and back, and top and bottom are indicated by arrows in the drawings. For the sake of convenience, the direction of the printer 1 in the drawings will be explained in the directions indicated by the arrows in the drawings.

[0020] An embodiment of the present invention will be described with reference to the drawings. The printer 1 can be connected to an external terminal (not shown) via a USB (registered trademark) cable. The external terminal is a general-purpose personal computer (PC). The printer 1 can be powered by an external power source or by batteries. The printer 1 can print characters such as letters and figures on a print medium (hereinafter referred to as "medium M") based on print data received from the external terminal. The medium M is supplied from outside the printer 1.

[0021] The appearance of the printer 1 will be described with reference to Figures 1 and 2. The position of the printer 1 shown in Figure 1 is referred to as the first position. The position of the printer 1 shown in Figure 2 is referred to as the second position. The printer 1 in the second position is the printer 1 in the first position, turned upside down. The printer 1 includes a main body case 10. The main body case 10 is a substantially rectangular parallelepiped that is elongated in the left-right direction. The main body case 10 includes a top surface 101, a bottom surface 102, a back surface 103, a front surface 104, a left surface 105, and a right surface 106.

[0022] A paper feed unit 15 is provided on the top surface 101. The paper feed unit 15 is a part that feeds the medium M into the main body case 10. The specific structure of the paper feed unit 15 will be described later. A printing unit 8 and a platen unit 5 are provided inside the main body case 10 (see FIG. 3). The printing unit 8 prints on the medium M. The platen unit 5 transports the medium M. The specific structures of the printing unit 8 and the platen unit 5 will be described later.

[0023] A battery case lid 4 is provided on the rear surface 103. An operation panel 6 is provided below the front surface 104. The operation panel 6 accepts various operations by the user. A paper discharge unit 11 is provided below the operation panel 6. The paper discharge unit 11 discharges the medium M printed by the printing unit 8 to the outside of the main body case 10.

[0024] The configuration of the printer 1 will be described with reference to Fig. 1. As shown in Fig. 1, the printer 1 has a main body case 10 having a substantially rectangular parallelepiped shape, with a first unit 10A and a second unit 2C attached to each other.

[0025] The first unit 10A is generally L-shaped when viewed from the right side. A detachable portion 110 is provided at the front upper portion of the first unit 10A. The detachable portion 110 is generally L-shaped when viewed from the right side. The second unit 2C is generally rectangular when viewed from the right side, and is detachably attached to the detachable portion 110 of the first unit 10A. This completes the printer 1.

[0026] The first unit 10A has a rear portion 2A and a front portion 2B. The rear portion 2A is located behind the first unit 10A and has a rectangular shape that is long in the vertical direction when viewed from the right side. The rear portion 2A houses circuit boards and the like for driving the printer 1. The front portion 2B is located at the front lower portion of the rear portion 2A and has a generally rectangular shape that is long in the vertical direction when viewed from the right side. The front portion 2B is shorter in height than the rear portion 2A. The rear portion 2A houses the printing unit 8 (see Figure 3). The second unit 2C is located above the front portion 2B and has a generally rectangular shape when viewed from the right side. The second unit 2C houses the platen unit 5 (see Figure 3).

[0027] The relationship between each surface of first unit 10A and second unit 2C and top surface 101 to right surface 106 will be described with reference to Figure 1. The top surface of first unit 10A and the top surface of second unit 2C form top surface 101 of main body case 10. The bottom surface of first unit 10A forms bottom surface 102 of main body case 10. The back surface of first unit 10A forms back surface 103 of main body case 10.

[0028] The front surface of second unit 2C and the front surface of front portion 2B of first unit 10A form a front surface 104 of main body case 10. The back surface of first unit 10A forms a back surface 103 of main body case 10. The left surface of first unit 10A and the left surface of second unit 2C form a left surface 105 of main body case 10. The right surface of first unit 10A and the right surface of second unit 2C form a right surface 106 of main body case 10.

[0029] The internal mechanism of the printer 1 will be described with reference to Figure 3. The following description will be given of the printer 1 in the second position. The printing unit 8 is provided inside the main body case 10, on the lower end side of the front side portion 2B. The printing unit 8 prints on the medium M fed from the paper feed unit 15.

[0030] The printing unit 8 includes a thermal head 26B and a spring 26C. The thermal head 26B and the spring 26C are supported by a support portion 9 inside the main body case 10. The thermal head 26B is provided at the lower end of the front portion 2B. The thermal head 26B extends in the left-right direction. The thermal head 26B prints characters on the medium M by heating the medium M. The lower end of the spring 26C is connected to the upper side of the thermal head 26B. The upper end of the spring 26C is fixed in position by the support portion 9. Therefore, the thermal head 26B is biased downward by the elastic force of the spring 26C.

[0031] The second unit 2C is provided with a platen unit 5. A platen roller 53 is rotatably supported in the platen unit 5. A rotation shaft 53A of the platen roller 53 extends in the left-right direction. The platen roller 53 contacts the thermal head 26B from below.

[0032] The platen unit 5 includes a motor (not shown). The rotational driving force of the motor is transmitted to the platen roller 53 via multiple gears (not shown). This causes the platen roller 53 to rotate. The platen roller 53 transports the medium M sandwiched between itself and the thermal head 26B toward the downstream side of the transport path T.

[0033] The position where the platen roller 53 and the thermal head 26B come into contact is called the "printing position P." At the printing position P, the medium M is sandwiched between the platen roller 53 and the thermal head 26B. In this state, when the thermal head 26B generates heat, characters are printed on the medium M.

[0034] The configuration of the paper feed unit 15 will be described in detail with reference to FIG. 1. The paper feed unit 15 is provided on the top surface 101 of the first unit 10A (rear side portion 2A). The paper feed unit 15 is recessed from the center to the rear end on the top surface of the rear side portion 2A toward the bottom surface 102. The left-right length of the paper feed unit 15 is longer than the width direction length of the medium M. The width direction of the medium M is the left-right direction. A paper feed opening 15A is provided at the back side of the recessed portion of the paper feed unit 15. The paper feed opening 15A extends in the left-right direction. The medium M is inserted into the paper feed unit 15 through the paper feed opening 15A. This allows the medium M to be fed into the main body case 10.

[0035] A recess 17 recessed toward the bottom surface 102 is provided in a portion of the top surface 101 corresponding to the top surface of the rear portion 2A. The recess 17 recesses in the front-to-rear direction from the rear side of the paper feed unit 15 to the rear surface 103. The recess 17 recesses in the left-to-right direction from the left end of the front portion 2B to the right end. The left-to-right length of the recess 17 is longer than the width of the medium M. The depth of the recess 17 is equal to or greater than the depth corresponding to the thickness of the medium M. In other words, the recess 17 recesses toward the bottom surface 102 across the width of the medium M to be fed between the rear surface 103 and the paper feed unit 15. The recess 17 is fixed to the main body case 10 with screws or the like.

[0036] A pair of guides 29 are provided in the recess 17. The right guide 29 is provided at the right end of the recess 17. The left guide 29 is provided at the left end of the recess 17. The pair of guides 29 protrude in the opposite direction to the recessed direction of the recess 17. The opposite direction is the direction from the bottom surface 102 toward the top surface 101. The protruding length of the pair of guides 29 is the same as the depth of the recess 17. The pair of guides 29 regulate the widthwise position of the medium M relative to the paper feed unit 15.

[0037] As shown in FIG. 3, guide surface 23A extends from the rear surface 103 toward paper feed opening 15A. Guide surface 23A guides medium M from the rear surface 103 toward paper feed opening 15A. Guide surface 23A includes a first portion 231 and a second portion 232. First portion 231 extends parallel to bottom surface 102 from the rear surface 103 toward paper feed unit 15. Second portion 232 extends from end E of first portion 231 on the paper feed unit 15 side, bending toward paper feed opening 15A.

[0038] The configuration of the paper discharge unit 11 will be described in detail with reference to FIG. 2. The paper discharge unit 11 is provided across the lower part of the front part 2B of the first unit 10A and the upper part of the front surface of the second unit 2C. The paper discharge unit 11 extends in the left-right direction from the left end to the right end of the printer 1. The left-right length of the paper discharge unit 11 is longer than the width direction length of the medium M. The paper discharge unit 11 is recessed from the front surface 104 toward the rear. The paper discharge unit 11 discharges the printed medium M to the outside of the main body case 10.

[0039] Two cutting blades 26A are provided at the back of the recessed portion of the paper discharge unit 11. The two cutting blades 26A are lined up one above the other. The two cutting blades 26A extend in the left-right direction. The left-right length of the cutting blades 26A is longer than the width of the medium M. The user can use the cutting blades 26A to cut off the portion of the medium M that has been discharged from the paper discharge unit 11.

[0040] With reference to FIG. 4(A), the flow of feeding the medium M when the printer 1 is in the first position will be described. In this case, the bottom surface 102 of the printer 1 is placed on the support surface 201 of the housing 200. The printer 1 may be fixed to the housing 200 with screws or the like. The housing 200 is box-shaped. At the front side of the housing 200, a portion corresponding to the operation panel 6 and paper discharge unit 11 of the printer 1 opens forward. At the rear of the printer 1, roll paper R, on which the medium M is wound in a roll, is placed. The rotation axis C of the roll paper R is set in a state extending in the left-right direction.

[0041] When medium M is transported, medium M is pulled out from the top side of roll paper R. Medium M pulled out from roll paper R is fed from the top and rear side of printer 1. Medium M passes through guide surface 23A and is transported toward paper feed unit 15. After passing paper feed unit 15, medium M is transported toward printing position P. At printing position P, printing unit 8 prints on medium M. After passing printing position P, medium M is discharged from paper discharge unit 11.

[0042] 4(B), the flow of feeding the medium M when the printer 1 is in the second position will be described. In this case, the top surface 101 of the printer 1 is placed on the ground surface 201 of the housing 200. The printer 1 may be fixed to the housing 200 with screws or the like. At the rear of the printer 1, roll paper R on which the medium M is wound in a roll is placed.

[0043] When medium M is transported, medium M is pulled out from the bottom side of roll paper R. Because recess 17 is recessed, printer 1 can feed paper from the bottom end on the rear surface 103 side. In other words, medium M is fed from the rear surface 103 side via recess 17. Medium M moves along guide surface 23A. Medium M is transported toward paper feed unit 15. After passing paper feed unit 15, medium M is transported toward printing position P. At printing position P, printing unit 8 prints on medium M. After passing printing position P, medium M is discharged from paper discharge unit 11.

[0044] As explained above , concave The portion 17 is recessed between the rear surface 103 and the paper feed unit 15 across the width of the medium M to be fed toward the bottom surface 102 to a depth at least equal to or greater than the thickness of the medium M.

[0045] A user can feed the medium M through the recess 17 while the top surface 101 is in contact with the ground surface 201. Therefore, the printer 1 can smoothly feed paper even when placed in different positions.

[0046] The guide surface 23A of the recess 17 includes a first portion 231 and a second portion 232. The first portion 231 extends parallel to the bottom surface 102 from the rear surface 103 side toward the paper feed unit 15. The second portion 232 extends from the end E of the first portion 231 on the paper feed unit side toward the paper feed unit 15, bending toward the paper feed unit 15. For example, when the medium M is a cut sheet, the cut sheet is less likely to curl. Therefore, the cut sheet is easily guided toward the paper feed unit 15. To 15 The medium M is fed along the second portion 232 of the guide surface 23A, which extends linearly toward the top surface 101. Therefore, the user can feed the medium M smoothly via the second portion 232. In this case, the guide surface 23A is particularly effective when the bottom surface 102 is in contact with the ground surface 201. For example, if the medium M is roll paper R, the roll paper R is likely to curl. Because the first portion 231 and the second portion 232 are bent, the roll paper R is fed along the guide surface 23A. Therefore, the user can feed the medium M smoothly via the guide surface 23A. In this case, the guide surface 23A is particularly effective when the top surface 101 is in contact with the ground surface 201.

[0047] The pair of guides 29 are provided in the recess 17. The pair of guides 29 protrude in the opposite direction to the recessed direction of the recess 17, and regulate the widthwise position of the medium M relative to the paper feed unit 15. The pair of guides 29 allow the user to stably feed the medium M to the paper feed unit 15.

[0048] The bottom surface 102 can be placed on the ground surface 201. The bottom surface 102 and the top surface 101 are parallel to each other. A user can feed the medium M into the paper feed unit 15 with the bottom surface 102 placed on the ground surface 201.

[0049] The above embodiment can be further modified in various ways as described below. The various modifications described below can be combined with each other as long as no contradictions arise. The printer 1 in the above embodiment is a roughly rectangular parallelepiped, but this is not limited to this. The shape of the printer 1 can be modified as appropriate. Furthermore, the top surface 101 and bottom surface 102 of the main body case 10 do not need to be parallel to each other. It is sufficient that the printer 1 can be placed on it.

[0050] In the above embodiment, the printer 1 is attached to the housing 200, but this is not limiting. For example, the printer 1 may be placed on a table. In this case, paper may be fed from a roll of paper R arranged behind the printer 1. Paper may also be fed into the printer 1 by the user.

[0051] In the above embodiment, the shape of the housing 200 is box-shaped, but is not limited to this. For example, it may be plate-shaped with only the contact surface 201. The housing may be designed appropriately depending on the usage mode of the user.

[0052] 4(A) in the above embodiment, the medium M is pulled out from the top side of the roll paper R and fed to the printer 1 in the first position, but this is not limiting. For example, the medium M may be pulled out from the bottom side of the roll paper R and fed to the printer 1 in the first position.

[0053] 4(B) in the above embodiment, the medium M is pulled out from the bottom of the roll paper R and fed to the printer 1 in the second position, but this is not limiting. For example, the medium M may be pulled out from the top of the roll paper R and fed to the printer 1 in the second position.

[0054] In the above embodiment, the bottom surface 102 or the top surface 101 is grounded to the ground surface 201, but this is not limitative. For example, any one of the back surface 103 to the right surface 106 may be grounded to the ground surface 201. In this case, the positions of the paper discharge unit 11 and the operation panel 6 may be changed as appropriate.

[0055] In the above embodiment, the paper discharge unit 11 is provided on the front surface 104, but this is not limiting. For example, the paper discharge unit 11 may be provided on another surface. For example, the paper discharge unit 11 may be provided on the rear surface 103.

[0056] In the above embodiment, guide surface 23A of recess 17 includes first portion 231 and second portion 232, but this is not limited to this. For example, as shown in FIG. 5 , guide surface 23B of recess 17 may be curved in a direction from bottom surface 102 toward top surface 101. For example, if medium M is roll paper R, printer 1 can smoothly feed medium M even when roll paper R is running low. Curved guide surface 23B is particularly effective when top surface 101 is in contact with ground surface 201.

[0057] 6, guide surface 23C of recess 17 may extend linearly from rear surface 103 toward paper feed slot 15A. For example, if medium M is a single sheet, the single sheet is less likely to curl. The single sheet follows guide surface 23C that extends linearly. Therefore, the user can smoothly feed medium M via guide surface 23C that extends linearly. Guide surface 23C is particularly effective when bottom surface 102 is in contact with ground surface 201.

[0058] In the above embodiment, the recess 17 is fixed to the main body case 10 with screws or the like, but this is not limited thereto. For example, the recess 17 may be fixed to the main body case 10 with a snap fit or the like. The recess 17 may also be detachable from the printer 1. In this case, the user can attach to the printer 1 a recess 17 suitable for the type of medium M. For example, the user may attach to the main body case 10 a recess 17 having the guide surface 23B or the guide surface 23C. In addition to replacing the recess 17 with one having different guide surfaces 23A to 23C, the manufacturer or user can easily replace the recess 17.

[0059] In the above embodiment, the protruding length of the pair of guides 29 is the same as the depth of the recess 17, but this is not limited thereto. The protruding length of the pair of guides 29 may be shorter than the depth of the recess 17. When the user places the upper surface 101 in contact with the ground surface 201, the pair of guides 29 can be prevented from interfering with the ground surface 201.

[0060] Furthermore, the protruding length of the pair of guides 29 may be longer than the recessed depth of the recess 17. When the user places the bottom surface 102 on the ground surface 201, the pair of guides 29 are long, so that the user can stably feed the medium M.

[0061] In the above embodiment, the pair of guides 29 is fixed to the recess 17, but this is not limiting. For example, the pair of guides 29 may be detachable from the recess 17. The user can attach the pair of guides 29 to the recess 17 that is suitable for the posture of the printer 1.

[0062] In the above embodiment, the pair of guides 29 are fixed in position in the recess 17, but this is not limiting. For example, the pair of guides 29 may each be movable in the left-right direction. Furthermore, the pair of guides 29 may be extendable and retractable in the up-down direction. This makes the length of the pair of guides 29 variable. For example, when the printer 1 is in the first position, the user can adjust the length of the pair of guides 29 to be longer than the depth of the recess 17. Furthermore, when the printer 1 is in the second position, the user can adjust the length of the pair of guides 29 to be shorter than the depth of the recess 17. Therefore, the user can adjust the length of the pair of guides 29 depending on the position of the printer 1.

[0063] In the above embodiment, the second unit 2C includes a mechanism for transporting the medium M using the platen roller 53, but this is not limited to this. For example, the second unit 2C may further include a cutting mechanism for cutting the medium M. Furthermore, if the medium M has a release paper, the second unit 2C may include a peeling mechanism for peeling off the release paper.

[0064] In the above embodiment, the second unit 2C is detachable from the first unit 10A, but this is not limiting. For example, the second unit 2C may be fixed to the first unit 10A.

[0065] In the above embodiment, the rear portion 2A and the front portion 2B of the first unit 10A are integral, but this is not limiting. For example, the front portion 2B may be detachable from the rear portion 2A.

[0066] In the above embodiment, the top surface 101 corresponds to the "first surface" of the present invention, the bottom surface 102 corresponds to the "second surface" of the present invention, and the back surface 103 corresponds to the "third surface" of the present invention. [Explanation of symbols]

[0067] 1. Printer 8 Printing section 10 Main unit case 11 Paper output section 15 Paper feed section 17 Recess 23A, 23B, 23C guide surface 29 Pair of guides 101, 102, 103, 104, 105, 106 sides 201 Ground plane 231 Part 1 232 Second part M medium E end

Claims

1. A printer, a main body case including a first surface, a second surface opposite to the first surface, and a third surface connecting the first surface and the second surface; a paper feed unit provided on the second surface and configured to feed a medium into the main body case; a printing unit provided inside the main body case and configured to print on the medium fed from the paper feed unit; a paper discharge unit that discharges the medium printed by the printing unit to the outside of the main body case; a recess provided on the second surface, the recess being recessed from the second surface toward the first surface, the recess having a guide surface connecting the third surface and the paper feed unit; a pair of guides provided in the recess, protruding beyond the guide surface in a protruding direction opposite to a direction in which the recess is recessed, and regulating a position of the medium in a width direction relative to the paper feed unit; Equipped with a length of the pair of guides protruding beyond the guide surface in the protruding direction is equal to or less than a depth of the recess, which is a distance between the second surface and the guide surface in the recessed direction; the main body case can be placed in either a first position in which the second surface faces upward and the first surface faces downward, or a second position in which the first surface faces upward and the second surface faces downward, the medium can be supplied to the paper supply unit from the third surface side through the recessed portion regardless of whether the main body case is placed in the first position or the second position, The second surface is a flat surface of the printer that is located closest to the protruding direction.

2. the guide surface is a surface that guides the medium from the third surface side toward the paper feed unit, The guide surface is curved in a direction from the first surface toward the second surface.

2. The printer according to claim 1.

3. the guide surface is a surface that guides the medium from the third surface side toward the paper feed unit, The guide surface extends linearly from the third surface side toward the paper feed unit.

2. The printer according to claim 1.

4. the guide surface is a surface that guides the medium from the third surface side toward the paper feed unit, The guide surface is a first portion extending from the third surface side toward the paper feed unit in parallel with the second surface; a second portion that is bent and extends from an end of the first portion on the paper feed unit side toward the paper feed unit; 2. The printer according to claim 1, further comprising:

5. The recess is detachable from the main body case.

5. The printer according to claim 1, wherein the printer is a printer having a plurality of printing heads.

6. The protruding length of the pair of guides is shorter than the depth of the recess.

6. The printer according to claim 1, wherein the printer is a printer having a plurality of printing heads.

7. The pair of guides are detachably attached to the recesses.

7. The printer according to claim 1, wherein the printer is a printer having a plurality of printing heads.

8. The first surface and the second surface are parallel to each other.

8. The printer according to claim 1, wherein the printer is a printer having a plurality of printing heads.

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