JP2006142518A - Portable printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable printer whereby guide display to a user and state display of the apparatus can be exactly and fully carried out, the operability is improved, and also miniaturization and weight reduction of the apparatus can be realized. <P>SOLUTION: An upper face of a body 1 is used as a display plate setting face of a rectangle where a display plate 2 is fitted. Guide parts 17 which support the display plate 2 set on the display plate setting face are formed at both front and rear sides of the display plate setting face. Electrode bodies for an organic EL disposed diagonally are set on the display plate setting face. The display plate set on the display plate setting face is a plate-like member with a face of a nearly identical shape to that of the display plate setting face where an organic EL element is formed at a transparent substrate of glass or the like. A terminal for the organic EL as an input terminal of an electrical signal for driving an organic EL display is set on a rear face. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a portable printer that is used while being held in a hand of a user or worn on a body such as a waist, and more particularly, a portable printer having a display unit for displaying guidance to a user, displaying the status of an apparatus, and the like. Type printer.

  Portable printers that are used while being held in the user's hand or worn on the body, such as the waist, have been reduced in size and weight to improve portability. An LED (light emitting diode) is generally used as a display unit for performing status display or the like (see, for example, Patent Document 1).

  However, in the prior art, the LED can transmit only limited information to the user, and the guidance display to the user and the status display of the apparatus cannot be performed accurately and sufficiently, so that the operability is impaired. There was a problem of end.

There are portable printers equipped with an LCD (Liquid Crystal Display) as a display unit for displaying guidance to the user, displaying the status of the device, and the like. However, the LCD requires a backlight, making the device smaller and lighter. There was a problem that the conversion was hindered.
JP-A-11-268376

  The present invention has been made in view of such problems, and the object of the present invention is to accurately and sufficiently perform guidance display to the user and display of the status of the apparatus, and the operability is improved. Another object of the present invention is to provide a portable printer that can realize a reduction in size and weight of the apparatus.

In order to solve the above problems, the present invention has the following configurations.
The gist of the invention described in claim 1 is a portable printer in which printing means for printing on roll paper is incorporated in the main body, the organic EL electrode body provided on the display board mounting surface of the main body, An organic EL display having an organic EL terminal provided on the back surface thereof, which is electrically connected to the organic EL electrode body when mounted on the display panel mounting surface, and drives the organic EL display In the portable printer, the signal is supplied from the organic EL electrode body to the organic EL terminal.
The gist of the invention of claim 2 is that a plurality of the organic EL electrode bodies are provided on the display board mounting surface, and a plurality of organic EL displays are provided according to the mounting direction of the organic EL display to the display board mounting surface. 2. The portable printer according to claim 1, wherein any one of the organic EL electrode bodies is electrically connected to the organic EL terminal.
According to a third aspect of the present invention, there is provided a mounting direction detecting means for detecting a mounting direction of the organic EL display on the display plate mounting surface, and based on the mounting direction detected by the mounting direction detecting means. The electrical signal for driving the organic EL display is output only from the organic EL electrode body that is electrically connected to the organic EL terminal among the plurality of organic EL electrode bodies. The portable printer according to Item 2 exists.
According to a fourth aspect of the present invention, the display panel mounting surface is curved, and the organic EL display has an organic EL element formed on a transparent substrate that is curved in substantially the same shape as the display panel mounting surface. The portable printer according to claim 1, wherein the portable printer is provided.
The gist of the invention described in claim 5 is the portable printer according to any one of claims 1 to 4, wherein the organic EL display has an organic EL element formed on a flexible transparent substrate. Exist.

  By providing the organic EL display, the portable printer of the present invention can perform guidance display to the user and status display of the apparatus accurately and sufficiently using the organic EL display, and the operability is improved. Organic EL is configured by supplying an electric signal for driving the organic EL display from the organic EL electrode body provided on the display panel mounting surface of the main body to the organic EL terminal provided on the back surface of the organic EL display. Since a display connection cable is not required and the thin and lightweight feature of the organic EL display can be utilized to the maximum, the apparatus can be reduced in size and weight.

  Furthermore, the portable printer of the present invention is provided with a plurality of organic EL electrode bodies on the display board mounting surface, and the plurality of organic EL electrode bodies are arranged according to the mounting direction of the organic EL display on the display board mounting surface. By configuring one of them to be electrically connected to the organic EL terminal, the orientation of the organic EL display can be changed according to the usage situation, and the operability can be further improved. Play. In addition, since the organic EL display can be detached, it can be easily replaced when the organic EL display is damaged.

  Furthermore, the portable printer of the present invention includes a mounting direction detecting means for detecting the mounting direction of the organic EL display on the display panel mounting surface, and the organic EL terminal and the electrical EL terminal are electrically connected to the organic EL electrode body. By being configured to output an electric signal for driving the organic EL display only from the organic EL electrode body that is conducted, the output is output from the organic EL electrode body that is not electrically connected to the organic EL terminal. It is possible to prevent the electrical signal from being adversely affected on the display of the organic EL display.

  Furthermore, the portable printer of the present invention is configured to mount an organic EL display in which an organic EL element is formed on a transparent substrate curved in substantially the same shape as the display plate mounting surface on the curved display plate mounting surface. Thereby, since the mounting location of the organic EL display is not limited to a flat surface, it is possible to provide an apparatus with excellent design.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a configuration of a first embodiment of a portable printer according to the present invention, and FIG. 2 is a diagram showing that the display board is not mounted in the first embodiment of the portable printer according to the present invention. It is a perspective view which shows the structure of a state. FIG. 3 is a diagram showing the configuration of the display panel shown in FIG. 1, (a) is a perspective view showing the configuration of the front surface, and (b) is a perspective view showing the configuration of the back surface. FIG. 4 is an explanatory diagram for explaining an example of mounting the display board in the first embodiment of the portable printer according to the present invention.

  The first embodiment is a portable printer that is used in the state that the user holds it in his / her hand or in the state where it is worn on the body such as the waist. Referring to FIG. 1, the label is spaced from the belt-like mount. It has a main body 1 in which printing means for printing on a roll of continuous paper or a roll of paper that has been wound around is attached, and a display board 2 mounted on the top of the main body 1. .

  The roll paper is configured to be stored in the main body 1, and the roll paper is stored in a storage unit (not shown) in the main body 1 by operating the cover open button 11 to open the cover 12 provided on the front surface. can do. The roll paper stored in the storage unit is supplied to the printing unit, and the roll paper printed by the printing unit is discharged out of the main body 1 from the discharge port 13 provided on the front surface. Reference numeral 14 denotes a peeling unit used when a continuous label is loaded as roll paper. By sliding the peeling unit 14 downward, the label is peeled off from the belt-like mount, and the peeled label is removed from the label. The belt-like mount after being discharged from the outlet 15 and peeled off the label is discharged from the discharge port 13.

  Referring to FIG. 2, the upper surface of the main body 1 is a rectangular display plate mounting surface 16 on which the display plate 2 is mounted, and the display plate mounting surface of the display plate 2 is on the front and rear sides of the display plate mounting surface 16. A guide portion 17 that guides the mounting on the display panel 16 and supports the display panel 2 mounted on the display panel mounting surface 16 is formed. Further, the display panel mounting surface 16 includes organic EL electrode bodies 18a and 18b arranged at diagonal positions, LED electrode bodies 19a and 19b arranged at diagonal positions, and direction detection electrodes 20. Is provided.

  The direction detection electrode 20 includes three electrodes 20a, 20b, and 20c. When the electrodes 20a and 20b are electrically connected, only the organic EL electrode body 18a and the LED electrode body 19a are provided. Becomes effective, and electrical signals for driving the organic EL display 21 and the LED 22 are output from the organic EL electrode body 18a and the LED electrode body 19a, respectively, and when the electrical connection between the electrode 20b and the electrode 20c is made, the organic Only the EL electrode body 18b and the LED electrode body 19b are effective, and the electric signals for driving the organic EL display 21 and the LED 22 are output from the organic EL electrode body 18b and the LED electrode body 19b, respectively. ing. When the electrodes 20a, 20b, and 20c are not electrically connected, the organic EL electrode body 18a and the LED electrode body 19a, and the organic EL electrode body 18b and the LED electrode body 19b are used. In addition, an electric signal for driving the organic EL display 21 and the LED 22 is not output.

  Referring to FIG. 3, the display panel 2 includes an organic EL display 21 in which an organic EL (electroluminescence) element is formed on a transparent substrate such as glass, and a region in which the LED 22 is incorporated. It is a plate-like member having a surface with substantially the same shape, and on the back side, an organic EL terminal 23 that is an input terminal for an electric signal for driving the organic EL display 21 and an LED that is an input terminal for an electric signal for driving the LED 22 A terminal 24 for use and a metal plate 25 are provided.

  The display board 2 can be attached to and detached from the display board mounting surface 16, and the display board 2 is attached to the display board mounting surface 16 between the guide portions 17 formed on the front and rear sides of the display board mounting surface 16. This is performed by inserting the end of the plate 2 and sliding the display plate 2 in the left-right direction along the guide portion 17 in a state where the display plate 2 is in contact with the display plate mounting surface 16 as indicated by arrows in FIG.

  Since the display board 2 is a plate-like member having a surface substantially the same shape as the rectangular display board mounting surface 16, the mounting direction of the display board 2 on the display board mounting surface 16 is as shown in FIG. As shown in FIG. 4B, the front surface of the main body 1, that is, the surface on which the discharge port 13 is formed is located below the organic EL display 21, and the front surface of the main body 1, as shown in FIG. Three types are selected: mounting such that the surface side on which the discharge port 13 is formed is above the organic EL display 21 and mounting with the back side of the display panel 2 face up as shown in FIG. 4C. be able to.

  As shown in FIG. 4 (a), when the front surface of the main body 1, that is, the surface side on which the discharge port 13 is formed is mounted below the organic EL display 21, the user can use the front surface of the main body 1, It is easy to check the discharge of the roll paper from the discharge port 13 and the display of the organic EL display 21 in the state where the surface on which the discharge port 13 is formed is the front side and is held in the hand. Suitable for use while holding.

  Further, when the main body 1 is mounted so that the front side of the main body 1 is below the organic EL display 21, the organic EL terminal 23 and the LED terminal 24 provided on the back surface of the display board 2 are on the display board mounting surface 16. The organic EL electrode body 18a and the LED electrode body 19a are in contact with each other to be in an electrically conductive state, and the electrodes 20a and 20b are electrically connected to each other by the metal plate 25 provided on the back surface of the display panel 2. A connection is made. Accordingly, electrical signals for driving the organic EL display 21 and the LED 22 are supplied to the organic EL terminal 23 and the LED terminal 24 only from the organic EL electrode body 18a and the LED electrode body 19a, respectively, and the organic EL electrode The electric signals for driving the organic EL display 21 and the LED 22 are not output from the body 18b and the LED electrode body 19b, and the electric signals output from the organic EL electrode body 18b and the LED electrode body 19b are not output from the organic EL display. 21 is not adversely affected.

  As shown in FIG. 4B, when the front surface of the main body 1, that is, the surface side on which the discharge port 13 is formed is mounted on the organic EL display 21, the user puts the rear surface of the main body 1, It becomes easier for the user to check the discharge of the roll paper from the discharge port 13 and the display of the organic EL display 21 in a state where the surface side where the discharge port 13 is not formed is the front side and is attached to the body such as the waist. Suitable for use when worn on the waist or other body.

  When mounted so that the front side of the main body 1 is above the organic EL display 21, the organic EL terminal 23 and the LED terminal 24 provided on the back surface of the display plate 2 are provided on the display plate mounting surface 16. The organic EL electrode body 18b and the LED electrode body 19b are brought into electrical continuity by contact with each other, and the metal plate 25 provided on the back surface of the display panel 2 is used to electrically connect the electrodes 20b and 20c. Made. Accordingly, electrical signals for driving the organic EL display 21 and the LED 22 are supplied to the organic EL terminal 23 and the LED terminal 24 only from the organic EL electrode body 18b and the LED electrode body 19b, respectively, and the organic EL electrode The electrical signals for driving the organic EL display 21 and the LED 22 are not output from the body 18a and the LED electrode body 19a, but the electrical signals output from the organic EL electrode body 18a and the LED electrode body 19a are output from the organic EL display. 21 is not adversely affected.

  As shown in FIG. 4 (c), when the display plate 2 is mounted with the back side facing up, the surface of the display plate 2 can be protected when not in use, and the metal provided on the back side of the display plate 2 Since the electrodes 25a, 20b, and 20c are not electrically connected by the plate 25, the organic EL electrode body 18a and the LED electrode body 19a, and the organic EL electrode body 18b and the LED electrode body 19b are used. Electric signals for driving the organic EL display 21 and the LED 22 are not output.

  In the first embodiment, the display unit 2 mounted on the display panel mounting surface 16 is supported by the guide portions 17 formed on both the front and rear sides of the display panel mounting surface 16. A support method may be used. For example, the display plate 2 mounted on the display plate mounting surface 16 is supported by a frame or the like that suppresses the peripheral edge of the display plate 2 placed on the display plate mounting surface 16. May be.

  Further, in the first embodiment, the surface of the display plate 2 is exposed, but a transparent plate such as a glass plate is bridged between the guide portions 17 formed on both the front and rear sides of the display plate mounting surface 16. The display plate 2 may be protected.

  As described above, according to the first embodiment, by providing the organic EL display 21, guidance display to the user and device status display can be accurately and sufficiently performed using the organic EL display 21. The operability is improved, and the organic EL display 21 is provided on the back surface of the organic EL display 21 from the organic EL electrode bodies 18a and 18b provided on the display panel mounting surface 16 of the main body. By supplying an electric signal for driving the display device, a connection cable for the organic EL display 21 is not necessary, and the thin and lightweight feature of the organic EL display 21 can be utilized to the maximum. There exists an effect that size reduction and weight reduction are realizable. Further, since the organic EL display 21 can be detached, it can be easily replaced when the organic EL display 21 is damaged.

  Furthermore, according to the first embodiment, a plurality of organic EL electrode bodies 18a and 18b are provided on the display board mounting surface 16, and a plurality of organic EL displays 21 are provided depending on the mounting direction of the organic EL display 21 on the display board mounting surface 16. By configuring one of the organic EL electrode bodies 18a and 18b to be electrically connected to the organic EL terminal 23, the orientation of the organic EL display 21 can be changed according to the use situation. In addition, the operability can be further improved.

  Furthermore, according to the first embodiment, a direction detection electrode for detecting the mounting direction of the organic EL display 21 to the display plate mounting surface 16 is provided on the display plate mounting surface 16, and a plurality of organic EL electrode bodies 18a are provided. 18b, the organic EL terminal is configured to output an electric signal for driving the organic EL display 21 only from the organic EL electrode bodies 18a and 18b that are electrically connected to the organic EL terminal. Thus, it is possible to prevent an electrical signal output from the organic EL electrode bodies 18a and 18b that are not electrically connected to the display 23 from adversely affecting the display of the organic EL display 21.

(Second Embodiment)
FIG. 5 is a perspective view showing a configuration of the second embodiment of the portable printer according to the present invention, and FIG. 6 is a diagram showing that the display board is not attached in the second embodiment of the portable printer according to the present invention. It is a figure which shows the structure of a state, (a) is a perspective view, (b) is a top view. 7 is a diagram showing the configuration of the display panel shown in FIG. 5, (a) is a perspective view showing the configuration of the front surface, and (b) is a plan view showing the configuration of the back surface. FIG. 8 is an explanatory diagram for explaining an example of mounting a display board in the second embodiment of the portable printer according to the present invention.

  The second embodiment is a portable printer that is used while being held in the hand of the user or worn on the body such as the waist. Referring to FIG. 5, the label is spaced from the belt-like mount. It has a main body 3 in which printing means for performing printing on a temporarily attached label continuous body or a roll paper around which a belt-like paper is wound, and a display board 4 mounted on the upper portion of the main body 3. .

  The roll paper is configured to be stored in the main body 3, and the roll paper is stored in a storage unit (not shown) in the main body 3 by operating the cover open button 31 to open the cover 32 provided on the front surface. can do. The roll paper stored in the storage unit is supplied to the printing unit, and the roll paper printed by the printing unit is discharged out of the main body 3 from the discharge port 33 provided on the front surface. Reference numeral 34 denotes a peeling unit used when a continuous label is loaded as roll paper. By sliding the peeling unit 34 downward, the label is peeled off from the belt-like mount, and the peeled label is discharged from the label. The belt-like mount after being discharged from the outlet 35 and peeled off the label is discharged from the discharge port 33.

  Referring to FIG. 6, a curved display board mounting surface 38 on which the display board 4 is mounted is provided on the upper surface of the main body 3, and the display board of the display board 4 is provided on both front and rear sides of the display board mounting surface 38. A guide portion 37 for guiding the mounting on the mounting surface 38 and supporting the display plate 4 mounted on the display plate mounting surface 38 is formed. Further, the display board mounting surface 38 is provided from an end portion on the upper surface of the main body 3, and the slide in the left-right direction of the display board 4 mounted on the display board mounting surface 38 is regulated by a detachable regulating member 36. Is done. Furthermore, as shown in FIG. 6B, the display panel mounting surface 38 is provided with organic EL electrode bodies 39a and 39b arranged at diagonal positions.

  Referring to FIG. 7, the display panel 4 is an organic EL display in which an organic EL (electroluminescence) element is formed on a transparent substrate such as glass that is curved in substantially the same shape as the display panel mounting surface 38. An organic EL terminal 41 which is an input terminal for an electric signal for driving the organic EL display is provided. A transparent flexible material such as a polymer film may be used as the transparent material for forming the organic EL (electroluminescence) element.

  The display board 4 can be attached to and detached from the display board mounting surface 38. To attach the display board 4 to the display board mounting surface 38, first, the regulating member 36 is removed and formed on both front and rear sides of the display board mounting surface 38. The end portion of the display plate 4 is inserted between the guide portions 37 and the display plate 4 is brought into contact with the display plate mounting surface 38 as shown by arrows in FIG. The display plate 4 is mounted on the display plate mounting surface 38, and the regulating member 36 is attached to restrict the sliding of the display plate 4 mounted on the display plate mounting surface 38 in the left-right direction.

  Further, since the display plate 4 is a curved plate-like member having a surface substantially the same shape as the rectangular display plate mounting surface 38, the mounting direction of the display plate 4 on the display plate mounting surface 38 is the same as that of the main body 3. Mounting such that the front side, that is, the surface side on which the discharge port 33 is formed is below the display plate 4, and the front side of the main body 4, ie, the side on which the discharge port 33 is formed, is above the display plate 4. You can choose between two ways of wearing.

  When the front surface of the main body 3, that is, the surface side on which the discharge port 33 is formed is mounted below the display panel 4, the user moves the front surface of the main body 3, that is, the surface side on which the discharge port 33 is formed. It is easy to check the discharge of the roll paper from the discharge port 33 and the display on the display board 4 in the state of being held in the front side, and is suitable for use in the state of being held by the user.

  Further, when the main body 3 is mounted so that the front side of the main body 3 is below the display plate 4, the organic EL terminal 41 provided on the back surface of the display plate 4 is used for the organic EL provided on the display plate mounting surface 38. The electrode body 39a comes into contact with the electrode body 39a to be in an electrically conductive state, and an electric signal for driving the display panel 4 is supplied from the organic EL electrode body 39a to the organic EL terminal 41.

  When the front surface of the main body 3, that is, the surface side on which the discharge port 33 is formed is mounted on the display plate 4, the user touches the rear surface of the main body 3, that is, the surface side on which the discharge port 33 is not formed. It becomes easier to confirm the discharge of the roll paper from the discharge port 33 and the display on the display board 4 when the user is attached to the body such as the waist on the front side, and the user can use it while wearing the body such as the waist. Is suitable.

  When mounted so that the front side of the main body 3 is located above the display plate 4, the organic EL terminal 41 provided on the back surface of the display plate 4 is provided with the organic EL electrode body provided on the display plate mounting surface 38. The electric signal for driving the display panel 4 is supplied to the organic EL terminal 41 only from the organic EL electrode body 39b.

  As described above, according to the second embodiment, by providing the display board 4 made of an organic EL display, the display board 4 is used to accurately and sufficiently display a guidance display to the user and an apparatus status display. The operability is improved, and the display panel is connected to the organic EL terminal 41 provided on the back surface of the display board 4 from the organic EL electrode bodies 39a and 39b provided on the display board mounting surface 38 of the main body. 4 is configured so as to supply an electric signal for driving the display panel 4, so that the connection cable for the display panel 4 is not required, and the thin and light feature of the organic EL display can be utilized to the maximum. It is possible to achieve a reduction in weight and weight. Further, since the organic EL display 4 can be detached, it can be easily replaced when the display panel 4 is damaged.

  Furthermore, according to the second embodiment, a plurality of organic EL electrode bodies 39a and 39b are provided on the display board mounting surface 38, and the mounting direction of the display board 4 comprising the organic EL display to the display board mounting surface 38 is provided. Accordingly, any one of the plurality of organic EL electrode bodies 39a and 39b is configured to be electrically connected to the organic EL terminal 41, whereby the orientation of the display panel 4 is changed according to the use situation. And the operability can be further improved.

  Furthermore, according to the second embodiment, a display comprising an organic EL display in which an organic EL element is formed on a transparent substrate curved in substantially the same shape as the display board mounting surface 38 on a curved display board mounting surface 38. By configuring so as to mount the plate 4, the mounting position of the display plate 4 is not limited to a flat surface, so that it is possible to provide an apparatus with excellent design.

  Note that the present invention is not limited to the above-described embodiments, and it is obvious that the embodiments can be appropriately changed within the scope of the technical idea of the present invention. In addition, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, and can be set to a suitable number, position, shape, and the like in practicing the present invention. In each figure, the same numerals are given to the same component.

1 is a perspective view showing a configuration of a first embodiment of a portable printer according to the present invention. 1 is a perspective view showing a configuration of a portable printer according to the present invention in a state where a display board is not mounted in a first embodiment. It is a figure which shows the structure of the display board shown in FIG. 1, (a) is a perspective view which shows the structure of the surface, (b) is a perspective view which shows the structure of a back surface. It is explanatory drawing explaining the example of a display board mounting | wearing in 1st Embodiment of the portable printer which concerns on this invention. It is a perspective view which shows the structure of 2nd Embodiment of the portable printer which concerns on this invention. It is a figure which shows the structure of the display board unmounted state in 2nd Embodiment of the portable printer which concerns on this invention, (a) is a perspective view, (b) is a top view. It is a figure which shows the structure of the display board shown in FIG. 5, (a) is a perspective view which shows the structure of the surface, (b) is a top view which shows the structure of a back surface. It is explanatory drawing explaining the example of a display board mounting | wearing in 2nd Embodiment of the portable printer which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Display board 3 Main body 4 Display board 11 Cover open button 12 Cover 13 Ejection port 14 Peeling unit 15 Label ejection port 16 Display board mounting surface 17 Guide part 18a, 18b Electrode body for organic EL 19a, 19b Electrode body for LED 20 Direction detection electrode (mounting direction detection means)
20a, 20b, 20c Electrode 21 Organic EL display 22 LED
23 Organic EL Terminal 24 LED Terminal 25 Metal Plate 31 Cover Open Button 32 Cover 33 Ejection Port 34 Peeling Unit 35 Label Ejection Port 36 Restriction Member 37 Guide Part 38 Display Board Mounting Surface 39a, 39b Organic EL Electrode Body 41 Organic EL Terminal

Claims (5)

A portable printer having a printing means for printing on roll paper in the main body,
An organic EL electrode body provided on the display panel mounting surface of the main body;
An organic EL display provided with an organic EL terminal on the back surface, which is electrically connected to the organic EL electrode body in a state of being mounted on the display plate mounting surface;
An electric signal for driving the organic EL display is supplied from the organic EL electrode body to the organic EL terminal. A plurality of the organic EL electrode bodies are provided on the display plate mounting surface,
2. One of the plurality of organic EL electrode bodies is electrically connected to the organic EL terminal according to the mounting direction of the organic EL display on the display plate mounting surface. The portable printer as described. Comprising a mounting direction detecting means for detecting a mounting direction of the organic EL display on the display plate mounting surface;
The organic EL display only from the organic EL electrode body that is electrically connected to the organic EL terminal among the plurality of organic EL electrode bodies based on the mounting direction detected by the mounting direction detecting means. The portable printer according to claim 2, wherein an electric signal for driving is output. The display board mounting surface is curved,
4. The portable printer according to claim 1, wherein the organic EL display includes an organic EL element formed on a transparent substrate curved in substantially the same shape as the display plate mounting surface. The portable printer according to claim 1, wherein the organic EL display has an organic EL element formed on a flexible transparent substrate.

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