Printing device

Abstract

To suppress a re-entry of a medium into a housing in which a transport unit is housed.SOLUTION: A printer unit 20 of a printer calculator 100 includes: a transport unit 30 that transports a roll paper P; an upper case 42 and a cover case 43 that are separated from each other; and a housing 40 containing the transport unit 30 inside. In the housing 40, a paper feed port 40a for supplying the roll paper P into the housing 40 is formed as a gap between the upper case 42 and the cover case 43.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to printing Regarding the device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, in a printer calculator or the like that is a calculator equipped with a printing function, a conveying device that conveys a medium such as recording paper is provided (for example, see Patent Document 1). In this type of conveying device, as shown in Figures 7(a) and (b), a narrow supply port is formed at the rear of the housing through which the medium (roll paper) can pass, and the medium wound in a roll outside the housing is supplied to the conveying section (printer device) inside the housing through this supply port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 2843709 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional conveying device described above, as shown by the dotted line in Figure 7(a), there was a problem in that the medium that passed through the conveying section and was discharged outside the housing would move along the surface of the medium outside the housing (before printing) as it was conveyed, partly due to the medium having a curled tendency, and would then re-enter the supply port.

[0005] This problem can be prevented by narrowing the vertical width of the supply port sufficiently, but because the lower case of the housing having the supply port is generally a resin molded product, it is difficult to mold the supply port sufficiently narrow from the standpoint of the strength of the molding die, etc. In other words, in order to narrow the vertical width of the supply port, it is necessary to thin the portion of the molding die where the supply port is molded, but the thickness of this molded portion cannot be thinned beyond the limit of strength, and as a result, it is not possible to narrow the vertical width of the supply port sufficiently.

[0006] The present invention has been made in consideration of the above circumstances, and aims to prevent a medium from re-entering a housing in which a transport unit is housed. of This is the aim. [Means for solving the problem]

[0007] In order to achieve the above object, a printing device according to the present invention comprises: A printing unit that prints on the medium; A housing that houses the printing unit therein; a support portion that supports the medium in a rolled state outside the housing, The housing includes a first case disposed on a bottom side of the housing, and 1 piece A second case is disposed above the first case and is separate from the base. a cover member configured to be detachable from the second case so as to expose a medium insertion port of the printing unit; having The housing has a supply port for supplying the medium to the printing unit inside the housing. is formed between an upper end surface of the U-shaped portion of the second case and a lower end surface of the cover member, The first case has a bottom end having an upright portion extending toward the second case, The support portion is a first side portion rotatably supported by the housing, a second side portion through which a core of the medium is inserted, and a third side portion connecting the first side portion and the second side portion; The first side portion of the support portion is In a state where the first case is sandwiched vertically between an upper end surface of the upright portion of the first case and an upper surface of the U-shaped portion of the second case, It is supported so as to be rotatable about its own central axis. It is characterized by: Effect of the Invention

[0008] According to the present invention, it is possible to prevent the medium from re-entering the housing that houses the transport unit. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a printer calculator according to an embodiment. [Diagram 2] FIG. 2 is a side cross-sectional view showing the internal configuration of a printer unit in the embodiment. [Diagram 3] 2, (b) is an enlarged view of the paper feed port in (a), and (c) is an enlarged view of part F in FIG. [Figure 4] 1A and 1B are diagrams for explaining two modified examples of the paper feed port, in which (a) is an enlarged view of a first modified example of the paper feed port, and (b) is a side cross-sectional view of a second modified example of the paper feed port. [Diagram 5] 11A and 11B are diagrams illustrating a modified example of the printer unit in an embodiment, where (a) is an oblique view of the printer unit, (b) is a diagram showing a roll arm supported by a cover case, and (c) is a detailed view of part G in (b). [Figure 6] 11A and 11B are diagrams illustrating another modified example of the printer unit in an embodiment, where (a) is an oblique view of the printer unit and a diagram showing a roll arm supported by the upper case, and (c) is a detailed view of part H in (b). [Figure 7] FIG. 1 shows a conventional conveying device, where (a) is a side cross-sectional view, and (b) is a view seen from behind. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment in which a conveying device according to the present invention is applied to a printer calculator will be described with reference to the drawings. In addition, the embodiments described below are subject to various limitations that are technically preferable for implementing the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0011] [Printer calculator configuration] First, the configuration of the printer calculator 100 in this embodiment will be described. FIG. 1 is a perspective view of a printer calculator 100. FIG. As shown in this figure, the printer calculator 100 has a printer unit 20 that is integrally provided on the upper side of the calculator unit 10 when viewed in a plan view, and is configured so that input values ​​and calculation results, etc. in the calculator unit 10 can be printed on a medium (in this embodiment, roll paper P) by the printer unit 20.

[0012] Figure 2 is a side cross-sectional view showing the internal configuration of the printer unit 20, Figure 3(a) is a view seen from the arrow E in Figure 2, Figure 3(b) is an enlarged view of the paper feed port 40a, which will be described later, in Figure 3(a), and Figure 3(c) is an enlarged view of part F in Figure 2. As shown in FIG. 2, the printer unit 20 is a transport device according to the present invention, and includes a transport unit 30 that transports the long rolled paper P in its longitudinal direction, a roughly rectangular housing 40 that houses the transport unit 30, and a roll arm 50 that supports the rolled paper P. The roll paper P, which is the printing target of the printer unit 20, is a long paper medium (printer paper) of a specified width wound around a cylindrical core C, and is sequentially unwound from the roll-shaped portion Pr wound around the core C and printed on by the printer unit 20. In the following description, the front side of the printer unit 20 (printer calculator 100) will be referred to as "top", the back side as "bottom", the bottom side in a plan view (calculator unit 10 side) as "front", and the top side in a plan view as "rear" to indicate the position and direction of each part. As shown in FIG. 1 etc., the right side when viewing the printer calculator 100 from the printer unit 20 side (rear side) will be referred to as "right" and the left side as "left". In other words, the right side in a plan view will be referred to as "left" and the left side in a plan view will be referred to as "right". Furthermore, unless otherwise specified, "roll paper P" refers to paper-like material unwound from a roll-shaped part Pr.

[0013] The transport unit 30 is a printer device having a printing unit 31 inside, and prints on the surface of the roll paper P while transporting it. More specifically, the transport unit 30 has a paper insertion opening 30a provided at the bottom rear end and a paper ejection opening 30b provided above and slightly forward of the paper insertion opening 30a, and after the printing unit 31 prints on the roll paper P pulled into the transport unit 30 through the paper insertion opening 30a, the roll paper P is ejected diagonally upward and rearward from the paper ejection opening 30b. The transport section 30 is generally rectangular, and the bottom surface 30c disposed on the lower side is inclined upward toward the rear so that the paper insertion opening 30a opens toward the rear and slightly upward. This is to allow the roll paper P to be smoothly inserted into the transport section 30 by aligning the paper insertion opening 30a directly with the paper feed opening 40a (described later) provided at the upper rear end of the housing 40.

[0014] The housing 40 is configured to have a lower case 41 that constitutes a substantially lower half of the housing 40, an upper case 42 that constitutes a substantially upper half of the housing 40, and a translucent cover case 43 that is detachably provided on the upper case 42. All of these cases 41 to 43 are resin molded products. The lower case 41 and the upper case 42 also serve as the housing of the calculator unit 10, and are fixed to each other at their periphery except for the calculator unit 10 side (front side). Of these, the upper case 42 has an opening 42c that is a large opening extending to the upper rear end of the upper plate so that the inside of the housing 40 can be exposed. The cover case 43 has a shape in plan view that corresponds to the opening 42c of the upper case 42, is formed in a substantially flat plate shape with the rear end curved downward to the rear, and is detachably provided on the upper case 42 so that the opening 42c can be opened and closed.

[0015] The housing 40 is provided with a paper feed port 40a and a paper discharge port 40b that communicate between the inside and outside of the housing 40. Of these, the paper feed opening 40a is a supply opening for supplying roll paper P into the housing 40, and is provided at the upper rear end of the housing 40. This paper feed opening 40a is a long gap that is long along the width direction (left-right direction) of the printer calculator 100 and has a narrow vertical width, and opens slightly upward at the rear.

[0016] More specifically, as shown in Figures 3(a) to (c), the paper feed port 40a is formed between an upper end surface 42a of the upper rear end portion of the upper case 42 facing the opening 42c and a lower end surface 43a of the rear end of the cover case 43, and is configured as a gap between the upper end surface 42a and the lower end surface 43a when they are placed opposite each other vertically. A plurality of ribs 421, 431 (three in this embodiment) are provided on each of the upper end surface 42a of the upper case 42 and the lower end surface 43a of the cover case 43 in order to narrow as much as possible the vertical width through which the roll paper P passes and to reduce the contact area between the upper end surface 42a and the lower end surface 43a constituting the paper feed opening 40a and the roll paper P. Specifically, the upper end surface 42a of the upper case 42 has three ribs 421 protruding toward the cover case 43 side (upper side), and the lower end surface 43a of the cover case 43 has three ribs 431 protruding toward the upper case 42 side (lower side) with a width slightly narrower in the left-right direction than the ribs 421 of the upper case 42. In this embodiment, the ribs 421 of the upper case 42 and the ribs 431 of the cover case 43 are provided at positions opposing each other in the width direction of the printer calculator 100 (i.e., the width direction of the roll paper P) (three locations at both ends and in the center in the width direction), and are also provided at positions approximately opposing each other in the front-to-rear direction (i.e., the feed direction of the roll paper P). However, the rib 421 of the upper case 42 and the rib 431 of the cover case 43 may be provided in positions that do not face each other in the width direction of the roll paper P, as in the first modified paper feed port shown in Fig. 4(a), or may be provided in positions that do not face each other in the front-rear direction, as in the second modified paper feed port shown in Fig. 4(b). Furthermore, it is sufficient that at least one of the ribs 421 and 431 is provided, and the number of ribs is not particularly limited.

[0017] 2, the paper discharge outlet 40b is an outlet for discharging the roll paper P to the outside of the housing 40, and is provided in the cover case 43 so as to open diagonally backward and long along the width direction of the printer calculator 100. This paper discharge outlet 40b is located above and slightly rearward of the paper discharge outlet 30b of the transport unit 30, and discharges the printed roll paper P that is discharged diagonally upward and rearward from the paper discharge outlet 30b of the transport unit 30 to the outside of the housing 40.

[0018] The roll arm 50 supports the roll portion Pr of the roll paper P so that it can rotate. Specifically, the roll arm 50 is formed by bending a cylindrical metal rod into a substantially U-shape, and has a first side portion 51 and a second side portion 52 that are substantially parallel to each other, and a third side portion 53 that connects one end of the first side portion 51 and the second side portion 52. The roll arm 50 is held in a state in which the first side portion 51 and the second side portion 52 are aligned in the width direction of the printer calculator 100, the first side portion 51 is supported by the upper rear end of the housing 40, and the third side portion 53 is inclined at a predetermined inclination angle α in a side view so that the second side portion 52 is located diagonally above and rearward of the paper feed opening 40a. In this specification, the inclination angle is the angle with respect to the placement surface S (shown by a dotted line in FIG. 2) that supports the lower case 41 of the printer calculator 100. The roll-shaped portion Pr of the roll paper P is set with the second side 52 inserted into the core C so that the tip is pulled forward from the bottom as the roll arm 50 rotates. The tip of the roll paper P is pulled into the conveying section 30 in the housing 40 through the paper feed opening 40a, and as the conveying section 30 conveys the roll-shaped portion Pr, it rotates around the second side 52 of the roll arm 50 and is unwound from the tip side in a paper-like form, and the paper-like roll paper P is supplied into the housing 40.

[0019] A first side portion 51 of the roll arm 50 is supported by the lower case 41 and the upper case 42 of the housing 40 at a portion located immediately below the paper feed opening 40a. Specifically, an erected portion 411 is erected on the bottom surface of the rear end of the lower case 41, and a U-shaped portion 422 is provided on the rear end of the upper case 42, which is formed into a U-shape in a side view and opens downward, with the upper end surface 42a constituting the paper feed port 40a as its upper end surface. The first side portion 51 of the roll arm 50 is supported in a state where it is sandwiched vertically between the upper end surface of the erected portion 411 of the lower case 41 and the upper surface (the bottom surface of the U-shape) inside the U-shaped portion 422 of the upper case 42. At this time, the first side 51 of the roll arm 50 is supported so as to be rotatable about its own central axis along the width direction of the printer calculator 100. Therefore, although not shown, when the roll arm 50 is not in use, it can be rotated about the first side 51 and stored in the housing 40 through the opening 42c of the upper case 42. In addition, the upright portion 411 of the lower case 41 and the U-shaped portion 422 of the upper case 42 only need to support the first side portion 51 of the roll arm 50 so that it can rotate, and may be formed in a uniform shape in the width direction of the printer calculator 100 over substantially the entire length of the first side portion 51, or may be provided only at both ends of the first side portion 51 in the width direction of the printer calculator 100 so as to support only both ends of the first side portion 51.

[0020] As described above, the third side 53 of the roll arm 50 is inclined upward and rearward at a predetermined inclination angle α in a side view so that the second side 52 supporting the roll portion Pr of the roll paper P is positioned diagonally upward and rearward of the paper feed opening 40a. In other words, the inclination angle α of the third side 53 determines the height (vertical direction) position of the roll portion Pr of the roll paper P. In this embodiment, the height position of the roll-shaped portion Pr is set at a position such that, when viewed from the side along the width direction of the roll paper P, as shown in Figures 2 and 3(c), as the remaining amount of roll paper P in the roll-shaped portion Pr decreases, the roll paper P passing through the paper feed port 40a switches from a state in contact with the upper end surface 42a of the upper case 42 to a state in contact with the lower end surface 43a of the cover case 43. In other words, the height position of the roll-shaped portion Pr is set so that, in a side view, the straight line L1 connecting the paper insertion port 30a of the transport section 30 and the paper feed port 40a of the housing 40 is located between the path line L2 of the roll-shaped portion Pr to the paper feed port 40a when the roll-shaped portion Pr has its maximum diameter (i.e., when the roll paper P is in the early stages of use) and the path line L3 of the roll-shaped portion Pr to the paper feed port 40a when the roll-shaped portion Pr has its minimum diameter (i.e., when the roll paper P is in the final stages of use; approximately the diameter of the core C). In other words, the inclination angles of the straight lines L1, L2, and L3 with respect to the placement surface S are each inclined at an inclination angle β 1 , β 2, β 3 When β 2 <β 1 <β 3 The inclination angle α of the third side portion 53 of the roll arm 50 is set so that: The symbol "S'" in FIG.

[0021] [Actions and Effects] Next, the operation and effect of the printer calculator 100 (printer unit 20) in this embodiment will be described.

[0022] First, when loading roll paper P into the printer unit 20, the user removes the cover case 43 from the upper case 42 to open the opening 42c of the upper case 42. Then, the portion of the cover case 43 that constitutes the paper feed port 40a (lower end surface 43a) is separated from the upper case 42, and there is no longer any member disposed above the upper end surface 42a that constitutes the paper feed port 40a of the upper case 42, so that the upper end surface 42a is exposed to the outside of the housing 40, and there is no member disposed above the paper insertion port 30a of the transport unit 30, so that the paper insertion port 30a is also exposed to the outside of the housing 40. In FIG. 2, the direction in which the cover case 43 is removed is indicated by a white double-headed arrow A, and the cover case 43' in the removed state is indicated by a two-dot chain line. In other words, the lower end surface 43a at the rear end of the cover case 43 can be displaced to a position away from above the upper end surface 42a of the upper case 42, thereby exposing the upper end surface 42a of the upper case 42 and the paper insertion port 30a of the conveying section 30 to the outside of the housing 40. Next, the user places the leading end of the roll paper P on the top end surface 42a of the upper case 42 that forms the paper feed opening 40a, and inserts the leading end into the paper insertion opening 30a of the transport unit 30. Then, the user operates a button on the calculator unit 10, for example, to feed the roll paper P into the transport unit 30, so that the roll paper P is fully drawn into the transport unit 30. Then, the cover case 43 is attached to the upper case 42 again to close the opening 42c, so that the roll paper P is inserted into the paper feed opening 40a and properly set in the transport unit 30 inside the housing 40. In this way, by removing the cover case 43 from the upper case 42, the components arranged above the upper end surface 42a of the upper case 42 that forms the paper feed opening 40a and the components arranged above the paper insertion opening 30a of the conveying section 30 are eliminated, and the upper end surface 42a of the upper case 42 and the paper insertion opening 30a of the conveying section 30 are exposed outside the housing 40. Therefore, it is possible to easily insert the roll paper P into the paper feed opening 40a and set it in the conveying section 30 compared to the conventional method in which the roll paper had to be inserted into a narrow paper feed opening formed in a single member before being set in the conveying section.

[0023] Then, the roll portion Pr of the roll paper P is supported by the second side portion 52 of the roll arm 50, whereby the roll paper P is set in the printer unit 20. Then, as the user operates calculator unit 10, roll paper P is transported in printer unit 20 while being sequentially printed by transport unit 30. Specifically, as roll paper P is transported by transport unit 30, it is unwound from roll-shaped unit Pr and supplied into housing 40 from paper feed opening 40a, printed by printing unit 31 in transport unit 30, and then discharged outside housing 40 from paper discharge opening 40b.

[0024] Here, in the housing 40 of this embodiment, the paper feed opening 40a is formed as a gap between the upper case 42 and the cover case 43, and a rib 421 is provided on the upper case 42, and a rib 431 is provided on the cover case 43. Therefore, compared to the conventional paper feed opening formed in a single member, the vertical width of the paper feed opening 40a (the width in the thickness direction of the roll paper P) and the gap between the rib 421 of the upper case 42 and the rib 431 of the cover case 43 can be made narrower. In other words, in the past, it was difficult to form the paper feed port narrower than a certain width (referred to as the "minimum width" in this specification) because the molding die (the molding part of the paper feed port) could not be made thin enough due to strength limitations. However, in this embodiment, by forming paper feed port 40a between two parts, upper case 42 and cover case 43, paper feed port 40a can be formed narrower than the minimum width without causing problems during molding, and ultimately, it is more difficult for roll paper P discharged from housing 40 to re-enter paper feed port 40a than in the past.

[0025] In this embodiment, the ribs 421, 431 are provided on the portions of the upper case 42 and the cover case 43 that form the paper feed opening 40a, so the contact area between the roll paper P and the inner wall surface of the paper feed opening 40a when passing through the paper feed opening 40a can be made smaller than when the ribs 421, 431 are not present. This reduces the transport resistance of the roll paper P when passing through the paper feed opening 40a, allowing the roll paper P to be transported smoothly. Furthermore, the rib 421 provided on the upper case 42 and the rib 431 provided on the cover case 43 are positioned opposite each other in the width direction of the roll paper P, so that the transport resistance of the roll paper P can be reduced while the passing width of the roll paper P can be further narrowed by the gap between these ribs 421, 431.

[0026] In addition, in this embodiment, the paper feed port 40a is located behind and above the paper insertion port 30a of the conveying section 30, and the roll arm 50 supports the roll-shaped portion Pr at a position behind and above the paper feed port 40a. Therefore, compared to the conventional method in which the paper feed port was formed at a position as low as the conveying section, it is possible to use a roll-shaped section Pr with a larger diameter while suppressing the bending angle (i.e., the conveying resistance) of the roll paper P when it passes through the paper feed port 40a. That is, in the past, when the position of the paper feed opening was low, the roll-shaped portion could not be positioned high enough to keep the bending angle of the roll paper small when it passes through the paper feed opening (see FIG. 7(a)), but in this embodiment, by locating the paper feed opening 40a above the paper insertion opening 30a of the transport section 30, it is possible to locate the roll-shaped portion Pr higher than in the past while keeping the bending angle of the roll paper P small when it passes through the paper feed opening 40a. In other words, in this embodiment, the inclination angle α (FIG. 2) of the third side portion 53 of the roll arm 50 can be made larger than the inclination angle γ (FIG. 7(a)) of the rotating portion 61 of the roll arm 60 of a conventional printer calculator. This makes it possible to support a roll-shaped portion Pr with a larger diameter than in the past on the roll arm 50.

[0027] As described above, according to the printer unit 20 of this embodiment, the housing 40 has a paper feed opening 40a for feeding the roll paper P into the housing 40 formed as a gap between the upper case 42 and the cover case 43. Therefore, unlike conventional paper feed openings formed in a single member, the vertical width of paper feed opening 40a (width in the thickness direction of rolled paper P) can be narrowed without being limited by the strength of the forming die, etc. Therefore, compared to conventional cases, the vertical width of paper feed opening 40a and the vertical width (gap) between rib 421 of upper case 42 and rib 431 of cover case 43 can be narrowed, and re-entry of rolled paper P into housing 40 can be suppressed.

[0028] Furthermore, when the cover case 43 is removed from the upper case 42 , the upper end surface 42 a of the upper case 42 forming the paper feed opening 40 a and the paper insertion opening 30 a of the transport section 30 are exposed to the outside of the housing 40 . Therefore, compared to the conventional method in which the roll paper had to be inserted into a paper feed opening formed in a single member before being set in the conveying section, the roll paper P can be easily inserted into the paper feed opening 40a and set in the conveying section 30.

[0029] At least one of the upper case 42 and the cover case 43 is provided with a rib protruding toward the other case at a portion that constitutes the paper feed opening 40a. Therefore, compared to when the rib is not provided, the contact area between the roll paper P and the inner wall surface of the paper feed opening 40a when passing through the paper feed opening 40a can be made smaller. This reduces the transport resistance of the roll paper P when passing through the paper feed opening 40a, allowing the roll paper P to be transported smoothly.

[0030] Furthermore, the rib 421 provided on the upper case 42 and the rib 431 provided on the cover case 43 are provided at positions facing each other in the width direction of the roll paper P. Therefore, the conveyance resistance of the roll paper P can be reduced, while the passing width of the roll paper P, which is the gap between these ribs 421, 431, can be further narrowed.

[0031] Further, the paper feed opening 40a is provided rearward and above the paper insertion opening 30a of the transport section 30, and the roll arm 50 supports the roll-shaped portion Pr at a position rearward and above the paper feed opening 40a. Therefore, compared to the conventional method in which the paper feed port was formed at a position as low as the conveying section, the bending angle (i.e., conveying resistance) of the roll paper P when passing through the paper feed port 40a can be reduced, while the roll-shaped portion Pr of the roll paper P can be positioned higher, allowing the use of a roll-shaped portion Pr with a larger diameter.

[0032] The transport unit 30 also includes a printing unit 31 therein that prints on the roll paper P. Therefore, printing can be performed on the front side of the roll paper P while it is being transported by the transport unit 30.

[0033] [Variations] Incidentally, the embodiments to which the present invention can be applied are not limited to the above-described embodiments, and it goes without saying that various modifications are possible without departing from the gist of the present invention.

[0034] For example, in the above embodiment, the roll arm 50 (first side 51) is supported by two parts, the lower case 41 and the upper case 42, but the roll arm 50 may be configured to be supported by any one of the parts of the housing 40. 5(a) to 5(c), the roll arm 50 may be supported only by the cover case 43. In this case, a through hole 43b may be provided in the rear end of the cover case 43 along the width direction, and a first side portion 51 of the roll arm 50 may be supported in the through hole 43b so as to be rotatable within the through hole 43b. In this case, a pin 54 for preventing the first side portion 51 from coming out of the through hole 43b may be inserted into the tip of the first side portion 51, and it is preferable that a notch 432 is provided in the cover case 43 to allow the pin 54 to escape (avoid contact).

[0035] 6(a) to 6(c), the roll arm 50 may be supported only by the upper case 42. In this case, an insertion hole 42d may be provided in the rear end of the upper case 42 along the width direction, and a first side portion 51 of the roll arm 50 may be supported in the insertion hole 42d so as to be rotatable within the insertion hole 42d. In this case, too, a pin 54 for preventing the first side portion 51 from coming out of the insertion hole 42d may be inserted into the tip of the first side portion 51, and the upper case 42 may preferably be provided with a notch 423 for allowing the pin 54 to escape (avoid contact).

[0036] In this way, by supporting the roll arm 50 on any one of the components of the housing 40, the degree of freedom in setting the height position of the paper feed opening 40a can be increased. That is, when the first side 51 of the roll arm 50 is supported by two parts, the lower case 41 and the upper case 42, as in the above embodiment, it is necessary to provide the lower case 41 with the standing part 411 for supporting the first side 51 from below (see FIG. 2). Therefore, the paper feed opening 40a must be provided with the standing part 411 either above or below (conventionally, the standing part 411 is provided on the lower side, whereas in the above embodiment, the standing part 411 is provided on the upper side). However, by providing the insertion hole 43b or the insertion hole 42d in the cover case 43 or the upper case 42 as described above and supporting the roll arm 50 with one part, it is not necessary to provide the standing part 411, and the height position of the paper feed opening 40a can be set more freely. 5(a) and 6(a), for example, the position of paper feed opening 40a can be slightly lowered and paper feed opening 40a can be formed between lower case 41 and upper case 42. Also, although not shown, by slightly lowering the position of paper feed opening 40a, it is possible to eliminate the need to have paper insertion opening 30a of transport unit 30 facing diagonally upward, and to configure housing 40 to be vertically compact with transport unit 30 not tilted.

[0037] Also, while the cover case 43 is described as being detachably provided on the upper case 42, it is sufficient that the portion of the cover case 43 constituting the paper feed opening 40a is displaceable to a position away from the position facing the portion of the upper case 42 constituting the paper feed opening 40a. Thus, although not shown, the cover case 43 may be configured to be supported by the upper case 42 so as to be rotatable about an axis along the width direction provided at the front end, for example, and the rear end may be displaced to a position away from the position facing the rear end of the upper case 42 as a result of this rotation.

[0038] Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and its equivalents. The inventions described in the claims originally attached to this application are set forth below. The claim numbers in the appended claims are the same as those in the claims originally attached to this application. [Additional Notes] <Claim 1> A transport unit that transports the medium; a housing having a first case and a second case separate from each other and accommodating the transport unit therein; A conveying device, characterized in that a supply port for supplying the medium into the housing is formed as a gap between the first case and the second case in the housing. <Claim 2> 2. The conveying device according to claim 1, characterized in that the second case is configured so that a portion constituting the supply port can be displaced to a position away from a position opposing the portion constituting the supply port of the first case. <Claim 3> The conveying device according to claim 2, characterized in that the housing is configured such that, as the portion of the second case that constitutes the supply port is moved away from the first case, the surface of the first case that constitutes the supply port and a second supply port of the conveying section through which the medium is supplied are exposed to the outside of the housing. <Claim 4> 4. The conveying device according to claim 1, characterized in that at least one of the first case and the second case has a convex portion protruding toward the other case at a portion constituting the supply port. <Claim 5> At least one first protrusion protruding toward the second case is provided in a portion of the first case that constitutes the supply port, The conveying device described in claim 4, characterized in that at least one second convex portion protruding toward the first case is provided in the portion of the second case that constitutes the supply port, in a position opposite the first convex portion in the width direction of the medium. <Claim 6> a medium support section that is held by the housing and supports the medium in a rolled state, the supply port is provided on one side of the conveying section in a direction perpendicular to a vertical direction as viewed in a width direction of the medium, and on an upper side than a second supply port through which the medium is supplied, 6. The conveying device according to claim 1, wherein the medium support section supports the medium wound in a roll shape at a position on the one side and above the supply port in the perpendicular direction. <Claim 7> 7. The transport device according to claim 1, wherein the transport unit includes a printing unit therein that prints on the medium. <Claim 8> 8. The transport device according to claim 1, wherein the second case is provided with a discharge port for discharging the medium to the outside of the housing. [Explanation of symbols]

[0039] 100 Printer Calculator 20 Printer Department 30 Conveyor 30a Paper insertion slot 30b Paper outlet 31 Printing Department 40 Case 40a Paper feed slot 40b Paper exit 41 Lower case 42 Upper case 42a Upper end surface 421 Rib 43 Cover Case 43a Lower end surface 431 Rib 50 Roll Arm 51 First side 52 Second side 53 Third Side P Roll paper Pr Roll-shaped part C core

Claims

[Claim 1] A printing unit that prints on the medium; A housing that houses the printing unit therein; a support portion that supports the medium in a rolled state outside the housing, the housing has a first case disposed on a bottom side of the housing, a second case disposed above the first case separately from the first case, and a cover member configured to be detachable from the second case so as to expose a medium insertion port of the printing unit; a supply port for supplying the medium to the printing unit in the housing is formed between an upper end surface of the U-shaped portion of the second case and a lower end surface of the cover member, The first case has a bottom end having an upright portion extending toward the second case, The support portion is a first side portion rotatably supported by the housing, a second side portion through which a core of the medium is inserted, and a third side portion connecting the first side portion and the second side portion; The first side portion of the support portion is supported rotatably around its own central axis in a state where it is sandwiched vertically between an upper end surface of the erected portion of the first case and an upper surface of the U-shaped portion of the second case. A printing device comprising:

Images