JP5183693B2 - Printer and information processing apparatus - Google Patents

Description

  Embodiments described herein relate generally to a printer and an information processing apparatus.

  2. Description of the Related Art Conventionally, an information processing apparatus is known that includes a display and a printer that transports a belt-shaped sheet such as a continuous form by a tractor and performs printing by a printing unit. As such a printer, there is a printer provided with a paper discharge tray that receives paper discharged from a paper discharge port and a cover that is provided so as to be openable and closable and covers the tractor.

  In the conventional printer including the discharge toilet and the cover, the structure is required to be simplified.

The printer according to the embodiment includes a main body, a transport mechanism, a printing unit, and a cover member. The main body is provided with a paper inlet, a paper outlet, and a paper conveyance path from the paper inlet to the paper outlet. The conveyance mechanism is provided in the main body, introduces a sheet from the sheet introduction port, and conveys the sheet along the sheet conveyance path. The printing unit is provided in the main body, and performs printing on a sheet introduced into the main body. It said cover member is movable between a second position for receiving a sheet to be conveyed from a first and a position to expose the conveying mechanism and the sheet discharge outlet for covering the conveying mechanism, rotating in the main body portion It is rotatably coupled. The cover member is a facing surface that faces the transport mechanism at the first position, and a receiving surface that is opposite to the facing surface of the cover member and receives paper at the second position; have. The main body is provided with an opening extending from the upper surface of the main body to the lower portion of the back. The paper inlet is provided in the lower portion of the back surface and is included in the opening. When the cover member is located at the first position, the cover member covers a part of the opening in a state where the paper introduction port is opened. The paper discharge port is provided on the upper surface. The cover member has a first cover part connected to the main body part and a second cover part connected to the first cover part. The second cover part includes a first part supported so as to be housed and pulled out by the first cover part, and a second part connected to a tip part of the first part. ing. The second portion has a direction different from a direction along the first portion when the first portion is housed in the first cover portion and the cover member is in the first position. It extends in a direction along the back surface, and extends in a direction away from the paper discharge port when the cover member is located at the second position.

FIG. 1 is a perspective view showing office equipment as an information processing apparatus according to an embodiment as viewed from the back side, and is a view showing a state where a cover member is located at a first position. FIG. 2 is a perspective view of the office device according to the embodiment as seen from the front side, and shows a state where the cover member is located at the second position. FIG. 3 is a perspective view of the office device according to the embodiment as seen from the back side, and shows a state where the cover member is located at the third position. FIG. 4 is a longitudinal side view showing the office equipment according to the embodiment, and is a view showing a state where the cover member is located at the second position. FIG. 5 is a perspective view of the cover member according to the embodiment as seen from the rear. FIG. 6 is a view taken in the direction of arrow VI in FIG. 5 and is a view showing a shaft portion provided in the cover member according to the embodiment. FIG. 7 is a perspective view showing a VII portion of FIG. 3, and is a view showing an engaging portion provided in the main body portion according to the embodiment. FIG. 8 is a view taken in the direction of arrow VIII in FIG. 7 and shows the engaging portion according to the embodiment. FIG. 9 is an explanatory diagram for explaining the relationship between the shaft portion and the engaging portion of the embodiment.

  Hereinafter, an office device 1 as an information processing apparatus according to an embodiment will be described in detail with reference to the drawings. In each drawing, for convenience, the width direction of the office device 1 and the printer 2 provided in the office device 1 is described as the X direction, the depth direction as the Y direction, and the height direction as the Z direction. The X direction, Y direction, and Z direction are orthogonal to each other. In the following description, the front side in the Y direction is referred to as the front side of the office device 1 and the back side in the Y direction is referred to as the rear side of the office device 1 in the line of sight of an operator (user) who uses the office device 1.

  As shown in FIGS. 1 and 2, the office device 1 includes a printer 2, a keyboard 3 as an input operation unit, a display 4 as a display output unit, and the like. The keyboard 3 and the display device 4 are arranged on the front surface 2 a side of the printer 2. Therefore, the operator (user) uses the office equipment 1 at a position on the front side of the printer 2. The housing 10a of the printer 2 includes an information processing unit configured by a CPU, a memory, and the like, and this information processing unit controls each unit of the office equipment 1.

  The display 4 has a substantially rectangular parallelepiped casing 4a and a display screen 4b that is supported by the casing 4a and displays information. The display device 4 is provided with a touch panel. The display device 4 constitutes an input operation unit with a touch panel.

  The printer 2 is a wire dot printer. As shown in FIGS. 1 to 4, the printer 2 includes a main body 10. The housing 10a of the main body 10 is provided with a first paper introduction port 10b, which is a paper introduction port, a second paper introduction port 10c, and a paper discharge port 10d. The first paper conveyance path 10e from the first paper introduction port 10b to the paper discharge port 10d and the second paper conveyance path 10f from the second paper introduction port 10c to the paper discharge port 10d are Is provided. The printer 2 includes a transport unit 11 (FIG. 4) that transports the paper along the first paper transport path 10e and the second paper transport path 10f, a printing unit 12 that performs printing on the transported paper, And a cover member 15 movably connected to the main body 10.

  In the printer 2, the transport unit 11 introduces the belt-shaped paper S into the main body unit 10 from the first paper introduction port 10b, and transports the introduced belt-shaped paper S along the first paper transport path 10e. To do. The conveyance unit 11 introduces a single sheet into the main body unit 10 from the second sheet introduction port 10c, and conveys the introduced single sheet along the second sheet conveyance path 10f. Then, the printing unit 12 performs printing on the belt-like paper S or the cut paper introduced into the main body unit 10. The belt-like paper S or single-sheet paper after printing is discharged from the paper discharge port 10d by the transport unit 11. Hereinafter, each part of the printer 2 will be described in detail.

  The first paper inlet 10b is formed in the lower part of the rear surface 10g of the housing 10a. Specifically, the first paper inlet 10b is formed between the pair of side wall portions 10h of the housing 10a. As described above, the belt-shaped paper S is introduced from the first paper introduction port 10b. Thus, since the first paper inlet 10b is formed at the lower part of the rear surface 10g of the housing 10a, a stack (not shown) of paper S is arranged behind the printer 2 so that the paper S It can be introduced from one paper inlet 10b.

  The second paper inlet 10 c is formed on the front surface 10 i of the housing 10 a of the main body 10. A single-sheet paper is introduced from the second paper inlet 10c. The second paper inlet 10c is opened at the front side of the printer 2, that is, at the operator side, at a position below the display 4. Therefore, the operator can insert the cut sheet into the second sheet introduction port 10c relatively easily.

  The paper discharge port 10d is formed on the upper surface 10j of the casing 10a of the printer 2. The paper discharge port 10 d is located behind the display device 4.

  The first paper transport path 10e and the second paper transport path 10f merge on the upstream side of the printing unit 12, and the downstream from the junction is a common path 10k. The first paper transport path 10e and the second paper transport path 10f are formed by a transport unit 11, a printing unit 12, a guide plate (not shown), and the like.

  As shown in FIG. 4, the printing unit 12 is provided inside the housing 10a. The printing unit 12 includes a wire dot printer head 16 and a platen 17. In the printing unit 12, the wire dot printer head 16 performs printing on the paper by pressing an ink ribbon (not shown) on the paper supported by the platen 17 and transferring the ink to the paper.

  As shown in FIG. 4, the paper transport unit 11 includes a tractor 18 positioned upstream of the first paper transport path 10e, and a plurality of rollers positioned upstream of the second paper transport path 10f and the common path 10k. A pair 19. In the first paper transport path 10e, the paper transport unit 11 transports the belt-shaped paper S by the roller pair 19 located in the tractor 18 and the common path 10k, and in the second paper transport path 10f, all the roller pairs 19 are transported. To transport a single sheet of paper.

  The roller pair 19 includes a driving roller 19a and a driven roller 19b, and the driving roller 19a is rotationally driven by a motor as a driving source, so that the sheet is nipped and conveyed by the driving roller 19a and the driven roller 19b. .

  The tractor 18 is a conveyance mechanism that introduces a sheet into the main body 10 from the first sheet introduction port 10b and conveys the sheet along the first sheet conveyance path 10e. As shown in FIGS. 3 and 4, the tractor 18 has a pair of belt units 18a and a plurality of shafts 18b spanned between the pair of belt units 18a. The pair of belt units 18a are disposed at positions corresponding to the edge portions on both sides in the width direction (X direction) of the belt-shaped sheet S. The plurality of shafts 18b all extend along the X direction. The pair of belt units 18a are integrated via the plurality of shafts 18b. Further, by configuring at least one of the pair of belt units 18a to be slidable along the shaft 18b, the interval between the pair of belt units 18a can be variably set along the plurality of shafts 18b. it can. As described above, by changing the distance in the X direction between the pair of belt units 18a, it is possible to deal with the belt-like sheets S having different widths. In addition, an arcuate guide plate 18c is attached to the plurality of shafts 18b along the lower surface of the belt-shaped paper S. The belt unit 18a has an endless belt 18d in which a plurality of pins (not shown) are projected in a row on the outer peripheral surface, and an open / close cover 18e. In the belt unit 18a, the paper can be engaged with the belt unit 18a by closing the open / close cover 18e in a state where the pin hole of the paper S is inserted in the pin of the endless belt 18d. The tractor 18 conveys the belt-shaped sheet S by the endless belt 18d being driven to rotate by a motor (not shown) via the shaft 18b. The guide plate 18 c is in contact with the lower surface of the belt-shaped paper S and guides the paper S. The pair of belt units 18a are formed symmetrically with respect to the YZ plane at the intermediate portion in the width direction of the paper.

  As shown in FIGS. 1 to 4, the cover member 15 is formed in a substantially rectangular plate shape, and is disposed on the display 4 on the side opposite to the display screen 4 b side. The cover member 15 is supported by the holding portion 22 so as to be rotatable with respect to the main body portion 10 about a shaft portion 23 (see FIG. 5) along the width direction (X direction) of the printer 2 as a central axis. Specifically, the cover member 15 has a first position (FIG. 1) that covers the tractor 18 and a second position (FIGS. 2 and 4) that receives the paper that is exposed from the discharge port 10d and exposes the tractor 18. ) And a third position (FIG. 3) that is further rotated from the second position in the rotation direction from the first position to the second position. 10a is connected by a holding part 22. The third position is a position where the front end portion 15c of the cover member 15 is farther from the paper inlet 10b and the tractor 18 than when the cover member 15 is positioned at the second position. The cover member 15 is located between the pair of side wall portions 10h of the housing 10a of the main body portion 10 at the first position. The cover member 15 stands up and tilts backward in the second position. The cover member 15 stands up and tilts forward in the third position.

  As illustrated in FIG. 5, the cover member 15 includes a case portion 20 and a drawer plate portion 21 connected to the case portion 20. The case part 20 supports the drawer | drawing-out board part 21 so that accommodation and drawing | extracting are possible, Thereby, the cover member 15 can be expanded-contracted.

  As shown in FIGS. 3 to 5 and the like, the case portion 20 includes a connecting portion 20a connected to the housing 10a of the main body portion 10 by a support portion, and a first flat plate portion 20b extending from the connecting portion 20a. And a pair of guide rail portions 20c provided at both ends in the width direction of the first flat plate portion 20b. The connecting portion 20 a extends in the width direction (X direction) of the printer 2. The first flat plate portion 20 b extends in a direction orthogonal to the width direction of the printer 2. The pair of guide rail portions 20c extends in a direction orthogonal to the width direction of the printer 2 and constitutes a groove portion into which the drawer plate portion 21 is inserted. Both ends in the width direction of the drawer plate portion 21 are slidably inserted into the pair of guide rail portions 20c, and the pair of guide rail portions 20c support the drawer plate portion 21 so as to be slidable. . The pair of guide rail portions 20 c positions the drawer plate portion 21 by a frictional force with the drawer plate portion 21.

  The drawer plate portion 21 includes a second flat plate portion 21a whose both ends in the width direction are held by a pair of guide rail portions 20c, and a bent plate connected at an angle to the distal end portion of the second flat plate portion 21a. Part 21b.

  The cover member 15 can be positioned at the first and third positions in a form in which the drawer plate portion 21 is housed in the case portion 20. In the second position, the cover member 15 is used in a state in which the drawer plate portion 21 is housed in the case portion 20 or in a form in which the drawer plate portion 21 is pulled out from the case portion 20.

  The cover member 15 has a facing surface 15a that faces the tractor 18 at a first position, a receiving surface 15b that is a surface opposite to the facing surface 15a of the cover member 15 and receives paper at a second position, have. The facing surface 15 a includes the back surface of the case portion 20 and the back surface of the drawer plate portion 21. The receiving surface 15 b includes the surface of the case portion 20 and the surface of the drawer plate portion 21.

  Next, the holding unit 22 will be described. The holding portion 22 is provided on the pair of left and right shaft portions 23 provided on the cover member 15 as shown in FIGS. 4, 5, and 9, and on the main body portion 10 as shown in FIGS. 4, 7, and 9. And a pair of left and right engaging portions 24 engaged with the shaft portion 23, and a stopper portion 25 provided on the main body portion 10 as shown in FIG. The holding portion 22 can hold the cover member 15 at any one of the first position, the second position, and the third position.

  As shown in FIG. 3, the stopper portion 25 protrudes from the inner surface of one side wall portion 10 h of the pair of side wall portions 10 h of the main body portion 10 and extends in the width direction of the printer 2. The stopper portion 25 is formed in a pin shape. The stopper portion 25 abuts against the opposing surface (back surface) 15a of the cover member 15 located at the first position, and the stopper portion 25 restricts the downward rotation of the cover member 15 in this state.

  As shown in FIG. 5, the shaft portion 23 protrudes from both end portions in the width direction of the connecting portion 20 a of the case portion 20 and extends in the width direction of the printer 2. As shown in FIGS. 5 and 6, the shaft portion 23 includes a curved surface portion 23 a in which a cross section orthogonal to the shaft center 23 e of the shaft portion 23 is formed in an arc shape, and a curved surface portion around the shaft center 23 e of the shaft portion 23. The outer peripheral surface 23c provided with the plane part 23b which connected the both ends of 23a was provided.

  As shown in FIGS. 4 and 7, the engaging portion 24 is provided on each of the pair of side wall portions 10 h of the main body portion 10. The engaging portion 24 is formed by forming a hole 24b in a plate portion 24a provided in the side wall portion 10h. The engaging portion 24 includes a first support portion 24c, a second support portion 24d, and a passage portion 24e.

  As shown in FIGS. 8 and 9, the first support portion 24 c is formed in an arc shape on the upper portion of the hole peripheral surface 24 f and supports the shaft portion 23 in a rotatable manner. The first support portion 24c supports the shaft portion 23 by contacting the curved surface portion 23a of the shaft portion 23 in a state where the cover member 15 is located at the first position.

  The second support portion 24d is formed below the hole peripheral surface 24f. The second support portion 24d includes a first contact surface 24g formed on the front surface of the hole peripheral surface 24f, a second contact surface 24h formed on the lower surface of the hole peripheral surface 24f, and the hole peripheral surface 24f. And a third contact surface 24i formed on the rear surface. The first contact surface 24g contacts the flat surface portion 23b of the shaft portion 23 in a state where the cover member 15 is located at the second position. The second contact surface 24h contacts the lower portion of the curved surface portion 23a of the shaft portion 23 in a state where the cover member 15 is located at the second position. The third contact surface 24 i contacts the top 23 d of the curved surface portion 23 a of the shaft portion 23 in a state where the cover member 15 is located at the second position. Here, the top 23d of the curved surface is the top with respect to the flat portion 23b. The second support portion 24d contacts the flat surface portion 23b of the shaft portion 23 in a state where the cover member 15 is positioned at the second position, and the shaft portion 23 in the direction from the second position toward the first position. Is restricted. Specifically, in a state where the cover member 15 is located at the second position, the cover member 15 is tilted rearward, so that the cover member 15 is rotated by its own weight in the direction from the second position toward the first position. The second support portion 24d comes into contact with the flat surface portion 23b of the shaft portion 23 and restricts its rotation.

  The passage portion 24e extends between the first support portion 24c and the second support portion 24d, and the passage portion 24e includes the first support portion 24c and the second support portion 24d. The hole peripheral surface 24f is included. The passage portion 24e communicates with the first support portion 24c and the second support portion 24d. The passage portion 24e includes the first support portion 24c and the second support portion when the posture of the shaft portion 23 with respect to the engaging portion 24 is different from that when the cover member 15 is positioned at the first position. The movement of the shaft portion 23 between 24d is allowed and the movement of the shaft portion 23 is guided. The prescribed posture of the shaft portion 23 is substantially the same as the posture of the shaft portion 23 when the cover member 15 is positioned at the second position. That is, the passage portion 24e regulates (blocks) the passage of the shaft portion 23 in a state where the cover member 15 is located at the first position, and has the same posture as when the cover member 15 is located at the second position. Sometimes, passage of the shaft portion 23 is allowed. The width a (FIG. 8) of the passage portion 24e is formed larger than the width b (FIG. 6) from the top portion 23d of the curved surface portion 23a to the flat surface portion 23b in the shaft portion 23, and the shaft at the curved surface portion 23a. The portion 23 is formed smaller than the diameter c (FIG. 6). Such a passage portion 24e has a first guide surface 24j that guides the flat surface portion 23b of the shaft portion 23, and a second guide surface 24k that guides the top portion 23d of the curved surface portion 23a of the shaft portion 23. The first guide surface 24j is located in front of the second guide surface 24k.

  Further, the engaging portion 24 has a third support portion 24m formed continuously with the second support portion 24d. The third support 24m includes a fourth contact surface 24n formed on the front surface of the hole peripheral surface 24f, a fifth contact surface 24p connected to the upper end of the fourth contact surface 24n, 2 abutment surface 24h. The fourth contact surface 24n is formed at a position obliquely above and in front of the second support portion 24d. The fourth contact surface 24n contacts the flat surface portion 23b of the shaft portion 23 in a state where the cover member 15 is located at the third position. The fifth contact surface 24p contacts the front portion of the curved surface portion 23a of the shaft portion 23 in a state where the cover member 15 is located at the third position. The second contact surface 24h contacts the lower portion of the shaft portion 23 in a state where the cover member 15 is located at the third position. The third support portion 24m supports the shaft portion 23 in contact with the flat surface portion 23b of the shaft portion 23 in a state where the cover member 15 is located at the third position. Specifically, in a state where the cover member 15 is located at the third position, the cover member 15 is tilted forward, so that the cover member 15 is moved forward from the third position (opposite to the direction toward the second position). The third support portion 24m comes into contact with the flat surface portion 23b of the shaft portion 23 and restricts the rotation.

  The second support portion 24d and the third support portion 24m are formed continuously, and allow the shaft portion 23 to rotate between the second position and the third position. During the rotation, the second contact surface 24h, the third contact surface 24i, and the fifth contact surface 24p guide the curved surface portion 23a of the shaft portion 23.

  In the holding unit 22 configured as described above, when the cover member 15 is located at the first position (FIG. 1, FIG. 9A), the first support part 24c supports the curved surface part 23a of the shaft part 23. At the same time, the stopper portion 25 supports the opposing surface (back surface) 15a of the cover member 15, and positions the cover member 15 at the first position. When the cover member 15 is moved from this state to the second position (FIG. 2, FIG. 9B), the operator manually points the cover member 15 to the second position (forward). The cover member 15 is rotated to the same posture (angle) as when the cover member 15 is positioned at the second position, and the cover member 15 is pushed downward. Accordingly, the cover member 15 is guided by the passage portion 24e and moved to the second support portion 24d, the flat surface portion 23b of the shaft portion 23 abuts on the second support portion 24d, and the second support portion 24d is The part 23 is supported. Thereby, the holding | maintenance part 22 positions the cover member 15 in a 2nd position. When the cover member 15 is moved from this state to the third position (FIG. 3, FIG. 9C), the operator manually points the cover member 15 to the third position (forward). Rotate. As a result, the cover member 15 is guided to the fifth contact surface 24p and moved to the third support portion 24m, and the flat surface portion 23b of the shaft portion 23 contacts the third support portion 24m, and the third The support portion 24 m supports the shaft portion 23. Thereby, the holding | maintenance part 22 positions the cover member 15 in a 3rd position. As described above, the cover member 15 is movable between the first position and the second position, and is rotated from the second position to the second position in the rotation direction from the first position to the second position. It can be moved to position 3. The holding unit 22 can hold the cover member 15 at any one of the first to third positions. Note that when the cover member 15 is moved from the third position to the second position and from the second position to the first position, the operator may perform an operation reverse to the above operation.

  As described above, in the present embodiment, the cover member 15 of the printer 2 has the first position that covers the tractor 18 and the second position that exposes the tractor 18 and receives the sheet carried out from the paper discharge port 10d. It is connected with the main-body part 10 so that it can move between. That is, the cover member 15 also serves as a paper discharge tray that receives the paper discharged from the paper discharge port 10d. Therefore, according to the present embodiment, the number of parts of the printer 2 can be reduced and the structure of the printer 2 can be simplified compared to a configuration in which the cover member 15 and the paper discharge tray are provided separately and independently. it can.

  Further, in the present embodiment, the cover member 15 can be rotated to a third position where the front end portion 15c of the cover member 15 is separated from the first paper introduction port 10b than when the cover member 15 is located at the second position. is there. Therefore, the cover member 15 can be positioned at the third position and the main body 10 can be opened, so that the sheet setting operation to the tractor 18 can be facilitated.

  By the way, in an office machine having a conventional printer in which a paper discharge toilet and a cover are provided independently, the paper discharge tray protrudes from the main body of the apparatus, which is an obstacle during transportation. Therefore, conventionally, when office equipment is shipped, there is a case where the operation of removing the paper discharge tray from the equipment body is sometimes performed. On the other hand, in the office machine 1 of the present embodiment, the cover member 15 is positioned between the pair of side wall portions 10h of the housing 10a by positioning the cover member 15 at the first position. It is possible to suppress the obstacle to transportation. Thereby, the work time of packing and unpacking work can be reduced. In addition, the protrusions can be reduced when the office equipment 1 is not used, and the office equipment 1 has a clean shape.

  In the present embodiment, a wire dot printer has been described as an example of the printer 2. However, the present invention is not limited to this, and the printer 2 may be, for example, a thermal printer or an inkjet printer.

  According to the embodiment described above, the structure of the printer 2 can be simplified.

1. Office equipment (information processing equipment)
DESCRIPTION OF SYMBOLS 2 ... Printer 4 ... Display 4b ... Display screen 10 ... Main-body part 10b ... 1st paper inlet (paper inlet)
10d: paper discharge port 10e: first paper transport path (paper transport path)
DESCRIPTION OF SYMBOLS 12 ... Printing part 15 ... Cover member 15a ... Opposite surface 15b ... Receiving surface 18 ... Tractor (conveyance mechanism)
22 ... Holding portion 23 ... Shaft portion 23a ... Curved portion 23b ... Planar portion 23c ... Outer peripheral surface 23e ... Axis 24 ... Engagement portion 24c ... First support portion 24d ... Second support portion 24e ... Passage portion S ... Paper

Japanese Unexamined Patent Publication No. 6-31991

Claims (5)

A main body provided with a paper inlet, a paper outlet, and a paper transport path from the paper inlet to the paper outlet;
A conveyance mechanism that is provided in the main body and introduces a sheet from the sheet introduction port and conveys the sheet along the sheet conveyance path;
A printing unit that is provided in the main body unit and performs printing on a sheet of paper introduced into the main body unit;
The main body is rotatably connected to a first position that covers the transport mechanism and a second position that exposes the transport mechanism and receives a sheet ejected from the paper discharge port. A cover member;
With
The cover member is a facing surface that faces the transport mechanism at the first position, and a receiving surface that is opposite to the facing surface of the cover member and receives paper at the second position; Have
The body portion is provided with an opening extending from the upper surface of the body portion to the lower portion of the back surface,
The paper inlet is provided at the lower part of the back surface and is included in the opening.
When the cover member is located at the first position, the cover member covers a part of the opening in a state where the paper inlet is opened,
The paper discharge port is provided on the upper surface,
The cover member has a first cover part connected to the main body part and a second cover part connected to the first cover part,
The second cover part includes a first part supported so as to be housed and pulled out by the first cover part, and a second part connected to a tip part of the first part. ,
The second portion has a direction different from a direction along the first portion when the first portion is housed in the first cover portion and the cover member is in the first position. A printer that extends in a direction along a rear surface and extends in a direction away from the paper discharge port when the cover member is located at the second position. The printer according to claim 1, further comprising: a holding unit capable of holding the cover member at any one of the first position and the second position. The holding portion includes a shaft portion provided on the cover member, and an engagement portion provided on the main body portion and engaged with the shaft portion,
The cover member is rotatable with respect to the main body portion with the shaft portion as a central axis,
The shaft portion is provided with a curved surface portion in which a cross section perpendicular to the shaft center of the shaft portion is formed in an arc shape and a flat surface portion connecting both ends of the curved surface portion around the shaft center of the shaft portion. Has an outer peripheral surface,
The engaging portion is
In a state where the cover member is located at the first position, a first support portion that contacts the curved surface portion and supports the shaft portion;
In a state where the cover member is located at the second position, a second part that abuts on the flat surface part and regulates the rotation of the shaft part in the direction from the second position toward the first position. A support part;
Provided between the first support portion and the second support portion, and the posture of the shaft portion with respect to the engaging portion is different from that when the cover member is located at the first position. A passage portion that allows movement of the shaft portion between the first support portion and the second support portion;
The printer according to claim 2 . The cover member is rotatable to a third position where the tip of the cover member is separated from the paper introduction port than when the cover member is located at the second position.
The holding unit, a printer according to any one of claims 1 to 3, characterized in that it is capable of holding the cover member in the third position. A printer according to any one of claims 1 to 4 ,
An indicator that displays information on the display screen;
With
The information processing apparatus according to claim 1, wherein the cover member is disposed on a side opposite to the display screen side in the display.

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