Mobile printer

Abstract

To provide a mobile printer which supplies electric power by using a wireless charging system.SOLUTION: A mobile printer includes: a roll body housing part which houses a roll body that is rolled recording paper; a print head which makes prints on the recording paper; a transport unit which draws the recording paper from the roll body and transports the recording paper to the print head; a power supply unit which supplies a drive voltage signal to the print head and the transport unit; a housing which covers the roll body housing part, the print head, the transport unit, and the power supply unit; and a static elimination film. The power supply unit has a power reception module which receives a signal generated based on a power source voltage signal from the exterior through a non-contact power supply system. The static elimination film is at least partially placed between the roll body housing part and the power reception module and located adjacent to the power reception module.SELECTED DRAWING: Figure 7

Description

[Technical Field]

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

[0002] Compact and lightweight mobile printers capable of executing printing processes to form images on media have been proposed. For example, Patent Document 1 discloses a portable thermal printer (mobile printer) equipped with a wireless power supply unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-131003 Summary of the Invention [Problem to be solved by the invention]

[0004] However, from the perspective of supplying power to a mobile printer using wireless power supply, there is still room for improvement in the mobile printer described in Patent Document 1. [Means for solving the problem]

[0005] One aspect of the mobile printer according to the present invention is a roll body storage section that stores a roll body around which recording paper is wound; a print head that prints on the recording paper; a transport unit that pulls out the recording paper from the roll and transports the recording paper to the print head; a power supply unit that supplies a driving voltage signal to the print head and the transport unit; a housing that covers the roll housing unit, the print head, the transport unit, and the power supply unit; Static electricity removal film, Equipped with the power supply unit has a power receiving module that receives a signal based on an external power supply voltage signal by wireless power supply; At least a portion of the static electricity removing film is located between the roll housing section and the power receiving module and adjacent to the power receiving module. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 2 is a diagram illustrating the electrical configuration of the mobile printer. [Figure 2] FIG. 1 is a perspective view of a mobile printer when face 101 is closed. [Figure 3] FIG. 1 is a perspective view of a mobile printer when face 101 is open. [Figure 4] FIG. 2 is a cross-sectional view showing an example of the internal structure of a mobile printer. [Figure 5] 1A and 1B are diagrams illustrating an example of the structure of a power receiving module. [Figure 6] FIG. 10 is a diagram illustrating an example of how to secure the power receiving module when the mobile printer is viewed from the +Z side to the -Z side along the Z direction. [Figure 7] 7 is a cross-sectional view taken along line Aa of an example of a method for fixing the power receiving module shown in FIG. 6. FIG. [Figure 8] 7 is a cross-sectional view taken along line Bb of an example of a method for fixing the power receiving module shown in FIG. 6. FIG. [Figure 9] FIG. 2 is a diagram illustrating the flow of electrical signals inside the mobile printer. DETAILED DESCRIPTION OF THE INVENTION

[0007] Preferred embodiments of the present invention will be described below with reference to the drawings. The drawings used are for the convenience of explanation. Note that the embodiments described below do not unduly limit the content of the present invention as defined in the claims. Furthermore, not all of the configurations described below are necessarily essential components of the present invention.

[0008] 1. Mobile printer electrical configuration Figure 1 shows the electrical configuration of a mobile printer 1. The mobile printer 1 in this embodiment is a so-called thermal printer that prints desired characters, images, etc. on a recording medium, such as thermal paper, by applying heat to the surface of the recording medium using a thermal head equipped with multiple heating elements. In addition to the mobile printer 1 of this embodiment, Figure 1 also shows a commercial power supply 2, a power supply circuit 3, and a power transmission unit 4 as external devices that supply driving power to the mobile printer 1 from outside.

[0009] The commercial power supply 2 generates a power supply voltage signal Vac, which is an AC voltage at a commercial frequency, and supplies the power supply circuit 3 and the power transmission unit 4, respectively.

[0010] The power supply circuit 3 converts the supplied power supply voltage signal Vac into a DC voltage signal Vdc1 with a specified voltage value and supplies it to the mobile printer 1. In other words, drive power according to the DC voltage signal Vdc1 is supplied to the mobile printer 1. Such a power supply circuit 3 is configured to include a converter circuit such as a flyback circuit, for example.

[0011] The power transmission unit 4 includes a power transmission circuit 5 and a power transmission coil 6. The power transmission circuit 5 converts the frequency of the power supply voltage signal Vac supplied from the power supply circuit 3 into a high-frequency voltage signal of 100 kHz to 250 kHz, and outputs the converted voltage signal to the power transmission coil 6 as a power transmission signal Vpt. This power transmission circuit 5 includes, for example, a converter circuit that converts the power supply voltage signal Vac into a DC voltage, and an inverter circuit that converts the DC voltage into a high-frequency power transmission signal Vpt. The power transmission coil 6 outputs a magnetic field Pmg that corresponds to the input power transmission signal Vpt. When the mobile printer 1 receives this magnetic field Pmg, the mobile printer 1 is supplied with driving power that corresponds to the magnetic field Pmg.

[0012] That is, the mobile printer 1 of this embodiment can be supplied with drive power corresponding to the DC voltage signal Vdc1 output by the external power supply circuit 3 and drive power corresponding to the magnetic field Pmg output by the power transmitting unit 4. The mobile printer 1 is driven by drive power corresponding to the DC voltage signal Vdc1 or drive power corresponding to the magnetic field Pmg. Note that while FIG. 1 illustrates a case in which drive power is supplied from both the DC voltage signal Vdc1 output by the power supply circuit 3 and the magnetic field Pmg output by the power transmitting unit 4, the mobile printer 1 may also be supplied with drive power from only one of the DC voltage signal Vdc1 output by the power supply circuit 3 and the magnetic field Pmg output by the power transmitting unit 4. Furthermore, the mobile printer 1 may also be configured to receive drive power using a different method in addition to the DC voltage signal Vdc1 output by the power supply circuit 3 and the magnetic field Pmg output by the power transmitting unit 4.

[0013] As shown in FIG. 1, the mobile printer 1 includes a power supply unit 10, a control unit 20, a print head 30, a transport unit 40, and a cutting unit 50.

[0014] The power supply unit 10 includes connectors CN1 and CN2, a power receiving module 11, a power supply switching circuit 12, a battery module 13, and a power supply circuit .

[0015] The DC voltage signal Vdc1 output by the power supply circuit 3 is supplied to the mobile printer 1 via connector CN1. The DC voltage signal Vdc1 is input to the power supply switching circuit 12. The connector CN1 to which this DC voltage signal Vdc1 is supplied is a USB-Type-C receptacle connector that is shaped to allow attachment of a cable that complies with the USB-Type-C standard. In other words, the power supply unit 10 has connector CN1, which is a USB-Type-C receptacle connector to which the DC voltage signal Vdc1 based on the power supply voltage signal Vac is supplied.

[0016] In addition to the DC voltage signal Vdc1, connector CN1, which is a USB Type-C receptacle connector, may also receive a communication signal for communication between the mobile printer 1 and an external device that complies with the USB (Universal Serial Bus) standard. In this case, the mobile printer 1 may include a USB communication driver for controlling communication that complies with the USB standard.

[0017] Furthermore, the DC voltage signal Vdc1 input to connector CN1, which is a USB-Type-C receptacle connector, may be a voltage signal compliant with the USB-PD (USB-Power Delivery) standard, which is capable of supplying drive power of 15 W or more. In other words, connector CN1, which is a USB-Type-C receptacle connector, may be capable of inputting a voltage signal that complies with the USB-PD standard and of inputting power of 15 W or more. In this case, the mobile printer 1 may include a USB-PD driver for controlling power supply that complies with the USB-PD standard.

[0018] The magnetic field Pmg output by the power transmitting unit 4 is received by the power receiving module 11. The power receiving module 11 then generates a DC voltage signal Vdc2 corresponding to the magnetic field Pmg and outputs it to the power supply switching circuit 12. Specifically, the power receiving module 11 has a power receiving coil 110 and a power receiving circuit 120. When the magnetic field Pmg is supplied to the power receiving coil 110, the power receiving coil 110 generates a high-frequency power receiving signal Vpr corresponding to the magnetic field Pmg and outputs it to the power receiving circuit 120. The power receiving circuit 120 rectifies and smoothes the supplied high-frequency power receiving signal Vpr, and controls the voltage value to convert it into a DC voltage signal Vdc2 of a predetermined voltage value and supplies it to the power supply switching circuit 12. That is, the power receiving module 11 includes a power receiving coil 110 that wirelessly receives a power transmission signal Vpt based on the power supply voltage signal Vac as a power receiving signal Vpr, and a power receiving circuit 120 that converts the power receiving signal Vpr received by the power receiving coil 110 into a DC voltage signal Vdc2, and receives a signal based on the power supply voltage signal Vac from outside the mobile printer 1 via wireless power supply. In this way, power output by the power transmitting unit 4 is transmitted contactlessly to the mobile printer 1. Here, the power receiving circuit 120 may perform at least one of rectifying, smoothing, and voltage value control of the power receiving signal Vpr, or it may perform all of rectifying, smoothing, and voltage value control.

[0019] Here, from the perspective of portability, the mobile printer 1 is required to be small and lightweight. Therefore, in the mobile printer 1, it is preferable to use an electromagnetic induction method to realize contactless power supply, which receives power contactlessly, in a small, lightweight, and low-cost device. Specifically, it is preferable to use a contactless power supply method that complies with the wireless power supply standard Qi1.2 and is capable of supplying 15 W or more of power. In other words, it is preferable that the power receiving module 11 of the mobile printer 1 is compatible with the wireless power supply standard Qi1.2 and is capable of receiving 15 W or more of power. This makes it possible to supply power to the mobile printer 1 contactlessly without compromising the portability of the mobile printer 1. Note that contactless power supply is sometimes referred to as wireless power supply, wireless charging, wireless transmission method, etc.

[0020] The power supply switching circuit 12 receives a DC voltage signal Vdc1 and a DC voltage signal Vdc2 via a connector CN1. , and a DC voltage signal Vdc2 output by the power receiving circuit 120. The power supply switching circuit 12 outputs one of the DC voltage signals Vdc1 and Vdc2 as a DC voltage signal Vch to the battery module 13 via the connector CN2. Such a power supply switching circuit 12 can be configured, for example, by a wired OR circuit.

[0021] That is, when only the DC voltage signal Vdc1 is input to the power supply switching circuit 12, the power supply switching circuit 12 outputs the DC voltage signal Vdc1 to the battery module 13 as the DC voltage signal Vch; when only the DC voltage signal Vdc2 is input to the power supply switching circuit 12, the power supply switching circuit 12 outputs the DC voltage signal Vdc2 to the battery module 13 as the DC voltage signal Vch; and when both the DC voltage signals Vdc1 and Vdc2 are input to the power supply switching circuit 12, the power supply switching circuit 12 selects only one of the DC voltage signals Vdc1 and Vdc2, or combines the DC voltage signals Vdc1 and Vdc2 and outputs the combined signal to the battery module 13 as the DC voltage signal Vch.

[0022] The battery module 13 holds charge according to a DC voltage signal Vch based on at least one of the DC voltage signal Vdc1 and the DC voltage signal Vdc2, and outputs a DC voltage signal Vbat according to the amount of held charge from the connector CN2 to the power supply circuit 14.

[0023] 1, in the mobile printer 1 of this embodiment, the DC voltage signal Vch output by the power supply switching circuit 12 is input to the battery module 13, and the battery module 13 outputs a DC voltage signal Vbat based on the input DC voltage signal Vch to the power supply circuit 14. In other words, the voltage signal output by the power supply switching circuit 12 is input to the power supply circuit 14 via the battery module 13. This allows the battery module 13 to function as a stabilizing circuit that reduces the risk of fluctuations in the voltage value of the voltage signal supplied to the power supply circuit 14, stabilizing the operation of the power supply circuit 14. A lithium-ion secondary battery, for example, can be used as this battery module 13.

[0024] The power supply circuit 14 generates a drive voltage signal Vd of a predetermined voltage value by increasing or decreasing the voltage value of the supplied DC voltage signal Vbat, and outputs it to the control unit 20. Here, while FIG. 1 illustrates the power supply circuit 14 generating one drive voltage signal Vd and outputting it to the control unit 20, the power supply circuit 14 may generate a plurality of drive voltage signals Vd corresponding to the operating voltages of the components of the control unit 20 to which the drive voltage signal Vd is supplied, and output them to the corresponding components of the control unit 20.

[0025] The electrical configuration of the power supply unit 10 is not limited to the configuration shown in Fig. 1. For example, the power supply switching circuit 12 to which the DC voltage signals Vdc1 and Vdc2 are input may estimate the amount of charge stored in the battery module 13 by detecting the voltage value of the DC voltage signal Vbat output by the battery module 13, and if it determines that a sufficient amount of charge is stored in the battery module 13, it may output the supplied DC voltage signals Vdc1 and Vdc2 to the power supply circuit 14 without passing through the battery module 13. If it determines that a sufficient amount of charge is not stored in the battery module 13, it may output the supplied DC voltage signals Vdc1 and Vdc2 to both the battery module 13 and the power supply circuit 14, thereby charging the battery module 13 and supplying voltage signals to the power supply circuit 14 in parallel. Furthermore, when neither of the DC voltage signals Vdc1 nor Vdc2 is supplied to the power supply switching circuit 12, the power supply switching circuit 12 may output the DC voltage signal Vbat output by the battery module 13 to the power supply circuit .

[0026] That is, the power supply switching circuit 12 determines whether the voltage signal to be supplied to the power supply circuit 14 is the DC voltage signal Vdc1 or the DC voltage signal Vdc2, depending on the amount of charge stored in the battery module 13 and whether the DC voltage signals Vdc1 and Vdc2 are supplied. You can also switch between Vbat and Vbat.

[0027] The control unit 20 includes a control circuit 21, a nonvolatile memory 22, a receiving buffer 23, a print head drive control unit 24, a recording paper transport control unit 25, and a recording paper cutting control unit 26.

[0028] The control circuit 21 includes a central processing unit (CPU), read-only memory (ROM), random access memory (RAM), and other peripheral circuits (not shown). The control circuit 21 receives a drive voltage signal Vd output by the power supply unit 10 and print data (not shown) containing image information to be formed on a recording medium. The control circuit 21 then uses the drive voltage signal Vd as its operating voltage and controls each part of the mobile printer 1, including the non-volatile memory 22, receive buffer 23, print head drive controller 24, recording paper transport controller 25, and recording paper cutting controller 26, based on the print data.

[0029] The nonvolatile memory 22 includes a semiconductor memory element such as an EEPROM (Electrically Erasable Programmable Read-Only Memory) or a flash memory, or a storage medium such as a hard disk. Various data are rewritably stored in this nonvolatile memory 22 under the control of the control circuit 21.

[0030] The receive buffer 23 includes a temporary storage area such as RAM, and is configured, for example, by a semiconductor storage device. Under the control of the control circuit 21, this receive buffer 23 stores various information such as commands related to printing of print data, etc.

[0031] The print head drive controller 24 receives a control signal Ctr1 generated by the control circuit 21 based on the print data, and a drive voltage signal Vd output by the power supply unit 10. The print head drive controller 24 then generates a head drive signal Sdr based on the drive voltage signal Vd at the timing specified by the control signal Ctr1 and outputs it to the print head 30. That is, the drive voltage signal Vd output by the power supply unit 10 is supplied to the print head 30 via the control unit 20. In other words, the power supply unit 10 supplies the drive voltage signal Vd to the print head 30 via the control unit 20. The print head 30 includes a plurality of resistors 32 arranged side by side in a direction perpendicular to the recording medium transport direction. When the head drive signal Sdr output by the print head drive controller 24 is supplied to each of the plurality of resistors 32, the resistors 32 generate heat.

[0032] The recording paper transport control unit 25 receives a control signal Ctr2 generated by the control circuit 21 based on the print data and a drive voltage signal Vd output by the power supply unit 10. The recording paper transport control unit 25 then generates a medium transport signal Str based on the drive voltage signal Vd at the timing specified by the control signal Ctr2 and outputs the medium transport signal Str to the transport unit 40. That is, the drive voltage signal Vd output by the power supply unit 10 is supplied to the transport unit 40 via the control unit 20. In other words, the power supply unit 10 supplies the drive voltage signal Vd to the transport unit 40 via the control unit 20. The transport unit 40 includes a transport motor 42 for transporting the recording medium in the transport direction. The transport motor 42 is driven when the medium transport signal Str output by the recording paper transport control unit 25 is supplied to the transport motor 42, and the recording medium is transported in the predetermined transport direction as the transport motor 42 is driven.

[0033] The recording paper cutting control unit 26 receives a control signal Ctr3 generated by the control circuit 21 based on the print data and a drive voltage signal Vd output by the power supply unit 10. The recording paper cutting control unit 26 generates a media cutting signal Sct based on the drive voltage signal Vd at the timing specified by the control signal Ctr3 and outputs it to the cutting unit 50. In other words, the drive voltage signal Vd output by the power supply unit 10 is transmitted to the cutting unit 50 via the control unit 20. In other words, the power supply unit 10 supplies a drive voltage signal Vd to the cutting unit 50 via the control unit 20. The cutting unit 50 includes a cutting motor 52 for cutting the recording medium at a predetermined timing. When the recording paper cutting control unit 26 outputs a media cutting signal Sct to the cutting motor 52, the cutting motor 52 is driven, and as the cutting motor 52 is driven, a movable blade 56 (described later) is driven to slide toward a fixed blade 54 (described later). As a result, the recording medium is pressed against the fixed blade 54, and the recording medium is cut to a predetermined size.

[0034] In the mobile printer 1 configured as described above, the control circuit 21 starts operating based on the drive voltage signal Vd output by the power supply unit 10. The control circuit 21 then generates control signals Ctr1, Ctr2, and Ctr3 based on the input print data and outputs them to the print head drive control unit 24, recording paper transport control unit 25, and recording paper cutting control unit 26.

[0035] As a result, the recording medium is transported in the transport direction, and resistor 32 generates heat in synchronization with the transport of the recording medium. As a result, heat is applied to the desired position on the recording medium, and desired characters, images, etc. are formed on the recording medium. The recording medium with the characters, images, etc. formed on it is then cut to the specified size. As a result, the recording medium with the desired characters, images, etc. formed on it and of the specified size is ejected from mobile printer 1.

[0036] As described above, the mobile printer 1 of this embodiment includes the print head 30 that prints on the recording medium, the transport unit 40 that transports the recording medium to the print head 30, the cutting unit 50 that cuts the recording medium, the control unit 20 that controls the operation of the print head 30, the transport unit 40, and the cutting unit 50, and the power supply unit 10 that supplies a drive voltage signal Vd to the print head 30, the transport unit 40, and the cutting unit 50. Under the control of the control unit 20, the transport unit 40 transports the recording medium to the print head 30, and the print head 30 is transported and supplies heat to the recording medium. As a result, a desired image is formed on the recording medium, which is thermal paper. The recording medium with the image formed on it is then cut to the desired size by the cutting unit 50. As a result, the recording medium with the image formed on it and of the desired size is ejected from the mobile printer 1.

[0037] 2.Mobile Printer Structure Next, we will explain the structure of the mobile printer 1. Fig. 2 is a perspective view of the mobile printer 1 when the surface 101 is closed, and Fig. 3 is a perspective view of the mobile printer 1 when the surface 101 is open. The following explanation uses the mutually perpendicular X, Y, and Z directions. Also, in the following explanation, the starting point side of the arrow indicating the X direction will be referred to as the -X side, and the tip side will be referred to as the +X side. The starting point side of the arrow indicating the Y direction will be referred to as the -Y side and the tip side will be referred to as the +Y side. The starting point side of the arrow indicating the Z direction will be referred to as the -Z side and the tip side will be referred to as the +Z side.

[0038] 2 and 3, the mobile printer 1 has a housing 100. The housing 100 includes surfaces 101 and 102 that face each other in the Z direction, surfaces 103 and 104 that face each other in the Y direction, and surfaces 105 and 106 that face each other in the X direction. Specifically, in the housing 100, surfaces 101 and 102 face each other in the Z direction, with surface 101 on the -Z side and surface 102 on the +Z side; surfaces 103 and 104 face each other in the Y direction, with surface 103 on the -Y side and surface 104 on the +Y side; and surfaces 105 and 106 face each other in the X direction, with surface 105 on the +X side and surface 106 on the -X side. As a result, the surfaces 101, 102, 103, 104, 105, and 106 form a storage space for storing various components inside the housing 100. The surface 101 is rotatable around the end on the +X side as a rotation axis. This allows a portion of the storage space defined by the faces 101, 102, 103, 104, 105, and 106 to be opened and closed. In the following description, the storage space defined by the faces 101, 102, 103, 104, 105, and 106 may be referred to as the storage space of the housing 100.

[0039] 3, a roll R is accommodated in the storage space of the housing 100. The roll R is what is known as roll paper around which the above-mentioned recording medium is wound, and in this embodiment, it is thermal roll paper around which thermal paper is wound as the recording medium. Here, in the following description, the recording medium that constitutes the roll R may be referred to as recording paper P.

[0040] As shown in FIG. 3 , a platen roller 48 and a gear 46 are provided at the −X side end of the surface 101. The platen roller 48 is rotatably provided, including a rotation axis along the Y direction. The gear 46 is fixed to the +Y side end of the platen roller 48. The platen roller 48 and gear 46 configured as described above are housed in the housing space when the surface 101 closes the housing space of the housing 100. At this time, the gear 46 passes through an opening 44 of the housing 100 and comes into contact with the transport motor 42 housed in the housing space of the housing 100. As a result, when the transport motor 42 is driven by a medium transport signal Str output by the control unit 20, the driving force is transmitted to the platen roller 48 via the gear 46, and the platen roller 48 is driven.

[0041] 2 and 3, an operation unit UI is located on the surface 106 of the housing 100. The operation unit UI functions as a user interface that accepts operation information from the user. When the user operates the operation unit UI, the mobile printer 1 executes predetermined operations, including printing processing.

[0042] Additionally, connector CN1 is located on surface 103 of housing 100, with at least a portion of it exposed to the outside of housing 100. As described above, connector CN1 is a USB-Type-C receptacle connector, and supplies a DC voltage signal Vdc1 as driving power to mobile printer 1. Furthermore, if connector CN1 is capable of USB communication compliant with the USB-Type-C communication standard, mobile printer 1 is communicably connected to an external device such as a host computer via connector CN1. This allows the user to cause mobile printer 1 to perform specific operations, including printing, by operating external devices communicably connected via connector CN1, in addition to operating the operation unit UI described above.

[0043] Next, we will explain an example of the internal structure of the mobile printer 1. Figure 4 is a cross-sectional view showing an example of the internal structure of the mobile printer 1. As shown in Figure 4, the housing 100 contains a wiring board 80, a platen roller 48, a print head 30, a cutting motor 52, a fixed blade 54, a movable blade 56, a power receiving module 11, and a roll housing section 60 in its storage space.

[0044] The wiring board 80 is located in the +X side area of ​​the storage space of the housing 100, near the surface 105 of the housing 100. The wiring board 80 is provided with various circuits and electronic components, including the power supply switching circuit 12 and power supply circuit 14 included in the power supply unit 10 described above, and the control circuit 21, non-volatile memory 22, receive buffer 23, print head drive control unit 24, recording paper transport control unit 25, and recording paper cutting control unit 26 included in the control unit 20. In other words, the control unit 20 is provided on the wiring board 80. Note that, although the present embodiment will be described assuming that the wiring board 80 is composed of a single board, the wiring board 80 may be composed of multiple boards.

[0045] The platen roller 48 , print head 30 , cutting motor 52 , fixed blade 54 , and movable blade 56 are located in the −X side area of ​​the storage space of the housing 100 , near a surface 106 of the housing 100 .

[0046] Specifically, the platen roller 48 is located at the -X side end of the surface 101, and is provided so that its rotation axis is approximately parallel to the Y direction. The print head 30 is located on the -X side of the platen roller 48 so as to face the platen roller 48. The platen roller 48 and the print head 30, which are positioned so as to face each other, sandwich the recording paper P wound around the roll R.

[0047] As described above, the platen roller 48 is driven by the drive of the transport motor 42. Therefore, the recording paper P sandwiched between the platen roller 48 and the print head 30 is transported so as to be pulled out from the roll R as the platen roller 48 is driven. The recording paper P pulled out from the roll R is then discharged to the outside of the mobile printer 1 through the discharge opening 160 located on the +Z side of the housing 100. In other words, the transport motor 42, gear 46, and platen roller 48 pull the recording paper P from the roll R and transport the recording paper P toward the discharge opening 160 via the print head 30. The configuration including the transport motor 42, gear 46, and platen roller 48 corresponds to the transport unit 40 described above. In other words, the transport unit 40 pulls the recording paper P from the roll R and transports the recording paper P to the print head 30.

[0048] The fixed blade 54 and the movable blade 56 are disposed upstream of the platen roller 48 and print head 30 and downstream of the discharge opening 160 along the transport direction of the recording paper P. At this time, the transport path along which the recording paper P is transported is located between the fixed blade 54 and the movable blade 56. Specifically, the fixed blade 54 and the movable blade 56 are located on the +Z side of the platen roller 48 and print head 30 and on the -Z side of the discharge opening 160. At this time, the fixed blade 54 is located on the +X side of the transport path for the recording paper P, and the movable blade 56 is located on the -X side of the transport path for the recording paper P.

[0049] Additionally, a cutting motor 52 is located near the movable blade 56. The cutting motor 52 is driven by a media cutting signal Sct output by the recording paper cutting control unit 26. As the cutting motor 52 is driven, the movable blade 56 slides toward the fixed blade 54 so that it rubs against the fixed blade 54 at a moderate angle. As a result, the recording paper P transported along the transport path between the fixed blade 54 and the movable blade 56 is pressed against the fixed blade 54. As a result, the recording paper P is cut. The cut recording paper P is then ejected to the outside of the mobile printer 1 through the ejection port 160. In other words, the cutting motor 52, fixed blade 54, and movable blade 56 cut the recording paper P transported by the transport unit 40. The configuration including the cutting motor 52, fixed blade 54, and movable blade 56 corresponds to the cutting unit 50 described above. The cutting unit 50 cuts the recording paper P by the movable blade 56 pressing the recording paper P against the fixed blade 54.

[0050] Here, when the cutting unit 50 cuts the recording paper P, it is sufficient that the recording paper P is pressed against only one of the fixed blade 54 or the movable blade 56. Therefore, the cutting unit 50 may be configured so that the recording paper P is pressed against either the fixed blade 54 or the movable blade 56 when a force is applied by a user or the like. In other words, the cutting unit 50 may cut the recording paper P by pressing the recording paper P against the fixed blade 54 or the movable blade 56. When the cutting unit 50 has this configuration, the cutting unit 50 may be configured to include only one of the fixed blade 54 or the movable blade 56.

[0051] Here, the fixed blade 54 and the movable blade 56 repeatedly cut the recording paper P. The blade 54 and the movable blade 56 are required to maintain high cutting performance even when repeatedly pressed against the recording paper P. The fixed blade 54 and the movable blade 56 are preferably made of a metal that has the strength and properties appropriate for a blade and that allows easy machining of the cutting edge suitable for the blade, such as iron, steel, or stainless steel. The fixed blade 54 and the movable blade 56 only need to have a shape that allows them to cut the recording paper P when pressed against it, and the cutting edges of the fixed blade 54 and the movable blade 56 may be linear or serrated. Having linear cutting edges of the fixed blade 54 and the movable blade 56 reduces the risk of paper dust being generated on the cut surface of the recording paper P. On the other hand, having serrated cutting edges of the fixed blade 54 or the movable blade 56 allows the fixed blade 54 or the movable blade 56 to cut the recording paper P with less force, improving user convenience.

[0052] The roll accommodating section 60 accommodates a roll R around which recording paper P is wound, using a drop-in method. The roll accommodating section 60 includes a partition 61 and is located between the wiring board 80, the platen roller 48, the print head 30, the cutting motor 52, the fixed blade 54, and the movable blade 56 in the X direction. Specifically, the roll accommodating section 60 is composed of partitions 61a, 61b, and 61c, which are parts of the partition 61. The roll accommodating section 60 is provided in the accommodation space of the housing 100 so that, when the roll R is accommodated in the roll accommodating section 60, the partition 61a, which is part of the partition 61, is located between the accommodated roll R and the wiring board 80, the partition 61b, which is part of the partition 61, is located between the accommodated roll R and the cutting motor 52, and the partition 61c, which is part of the partition 61, is located between the accommodated roll R and the surface 102.

[0053] Of the partitions 61 included in the roll housing 60, the partition 61c located between the housed roll R and the cutting motor 52 constitutes part of the transport path along which the recording paper P is transported. This makes it possible to make the mobile printer 1 more compact.

[0054] The power receiving module 11 is located in a region on the -Z side of the storage space of the housing 100, near the surface 102 of the housing 100. Specifically, the power receiving module 11 is located on the -Z side of the roll body accommodating section 60, between the partition 61c and the surface 102, and is fixed to the surface 102. In this case, the power receiving module 11 is located so that at least a portion of it overlaps with the roll body accommodating section 60 along the Z direction, which is the direction from the surface 102 toward the power receiving module 11, and the partition 61c, which is part of the partition 61, is located at least a portion between the power receiving module 11 and the roll body accommodating section 60 along the Z direction, which is the direction from the power receiving module 11 toward the roll body accommodating section 60.

[0055] Furthermore, in the mobile printer 1 of this embodiment, the power receiving module 11 is positioned so as not to overlap the wiring board 80 on which the control unit 20 is provided, along the Z direction, which is the direction from the surface 102 toward the power receiving module 11. In other words, the power receiving coil 110 included in the power receiving module 11 is positioned so as not to overlap the wiring board 80 on which the control unit 20 is provided, along the Z direction, which is the direction from the surface 102 toward the power receiving module 11.

[0056] The power receiving coil 110 receives a magnetic field Pmg based on the high-frequency power transmission signal Vpt output by the power transmission unit 4. In other words, a magnetic field Pmg is generated around the power receiving coil 110. If this magnetic field Pmg affects the control unit 20, the operation of the mobile printer 1 will become unstable and printing accuracy will decrease. To address this issue, the power receiving coil 110 and the wiring board 80 on which the control unit 20 is mounted, which are parts of the power receiving module 11 where the magnetic field Pmg may concentrate, are arranged so that they do not overlap in the Z direction. This reduces the risk of the magnetic field Pmg that may be generated around the power receiving coil 110 affecting the control unit 20.

[0057] Even more preferably, the power receiving coil 110 included in the power receiving module 11 is positioned along the Z direction, which is the direction from the surface 102 toward the power receiving module 11, so that the power receiving coil 110 and electronic components of the mobile printer 1 do not overlap. This reduces the risk that the magnetic field Pmg that may be generated around the power receiving coil 110 will affect the various electronic components of the mobile printer 1. Here, electronic components of the mobile printer 1 that are positioned so as not to overlap with the power receiving coil 110 are electronic components other than the electronic components included in the power receiving module 11. In this embodiment, these include passive components such as resistors, capacitors, and inductance elements that make up the various circuits provided on the wiring board 80 and that receive voltage signals, as well as active components such as diodes and transistors.

[0058] Specific examples of the configuration of the power receiving module 11, its placement in the housing 100, and a method of fixing it to the housing 100 will be described later.

[0059] As shown in FIG. 4 , the housing 100 also has a battery housing section 70 that houses the battery module 13. The battery housing section 70 is located on the +X side of the power receiving module 11 and on the -Z side of the wiring board 80, and is a recessed space that is formed in a part of the surface 102 and opens to the -Z side. That is, the battery housing section 70 is provided outside the housing 100. Therefore, the surface 102 that constitutes the battery housing section 70 is interposed between the battery module 13 housed in the battery housing section 70 and the wiring board 80, the power receiving module 11, and the roll housing section 60 that are housed in the housing space of the housing 100. In other words, the surface 102 is located between the battery module 13 and the wiring board 80, the surface 102 is located between the battery module 13 and the power receiving module 11, and the surface 102 is located between the battery module 13 and the roll housing section 60.

[0060] Furthermore, a portion of the connector CN2 provided on the wiring board 80 is exposed on the side surface on the +Z side of the battery housing section 70. When the battery module 13 is housed in the battery housing section 70, an electrode (not shown) of the battery module 13 and the connector CN2 are electrically connected. This electrically connects the wiring board 80 and the battery module 13 via the connector CN2.

[0061] As described above, in the mobile printer 1, the storage space configured inside the housing 100 accommodates the roll storage unit 60, print head 30, transport unit 40, power supply unit 10 including power receiving module 11, and control unit 20 mounted on wiring board 80, while the battery storage unit 70 mounted outside the housing 100 accommodates the battery module 13. In other words, the housing 100 includes surfaces 101, 102, 103, 104, 105, and 106, and is arranged to cover the roll storage unit 60, print head 30, transport unit 40, cutting unit 50, at least a portion of the power supply unit 10, and control unit 20. This reduces the risk of external impacts being applied to the roll storage unit 60, print head 30, transport unit 40, cutting unit 50, and power supply unit 10 of the mobile printer 1.

[0062] In this mobile printer 1, the roll housing 60, print head 30, transport unit 40, cutting unit 50, and control unit 20 are housed in the housing space of the housing 100, with the control unit 20 located near the surface 105 and the print head 30, transport unit 40, and cutting unit 50 located near the surface 106, and the roll housing 60 is located between the control unit 20 and the print head 30, transport unit 40, and cutting unit 50 in the direction from the surface 105 to the surface 106. In other words, the roll housing 60, transport unit 40, and control unit 20 are housed in the housing space of the housing 100, with the control unit 20 located near the surface 105 and the print head 30, transport unit 40, and cutting unit 50 in the direction from the surface 105 to the surface 106. In the direction along the surface 105, the control unit 20, the roll body accommodating section 60, and the conveying unit 40 are positioned in that order, and in the direction along the surface 106, the roll body accommodating section 60, the cutting unit 50, and the control unit 20 are positioned in the direction along the surface 106 from the surface 105, the control unit 20, the roll body accommodating section 60, and the cutting unit 50 are positioned in that order, and in the direction along the surface 106, the roll body accommodating section 60, the print head 30, and the control unit 20 are positioned in the direction along the surface 105 from the surface 106. In other words, the shortest distance between the control unit 20 and the surface 105 is shorter than the shortest distance between the control unit 20 and the surface 106, the shortest distance between the transport unit 40 and the surface 105 is longer than the shortest distance between the transport unit 40 and the surface 106, the shortest distance between the cutting unit 50 and the surface 105 is longer than the shortest distance between the cutting unit 50 and the surface 106, and the shortest distance between the print head 30 and the surface 105 is longer than the shortest distance between the print head 30 and the surface 106.

[0063] As a result, the head drive signal Sdr, medium transport signal Str, and medium cut signal Sct output by the control unit 20 all propagate from surface 105 to surface 106 within the storage space of the housing 100. This reduces the risk of noise being superimposed on the head drive signal Sdr, medium transport signal Str, and medium cut signal Sct, and also reduces the risk of malfunctioning of the mobile printer 1 due to the head drive signal Sdr, medium transport signal Str, and medium cut signal Sct canceling each other out.

[0064] 3. Fixing the power receiving module 11 to the housing 100 Next, a specific example of a method for fixing the power receiving module 11 to the housing 100 will be described. In describing a specific example of a method for fixing the power receiving module 11 to the housing 100, a specific example of the structure of the power receiving module 11 will first be described with reference to FIG. 5. FIG. 5 is a diagram showing an example of the structure of the power receiving module 11. As shown in FIG. 5, the power receiving module 11 includes a power receiving coil 110 and a power receiving circuit 120.

[0065] The power receiving coil 110 receives, in a non-contact manner, a magnetic field Pmg as a power receiving signal Vpr in response to a power transmission signal Vpt based on a power supply voltage signal Vac from a power transmission unit 4 provided outside the mobile printer 1. The power receiving coil 110 has a ring-shaped coil 111 through which the power receiving signal Vpr in response to the magnetic field Pmg propagates, and a molded member 112 provided to cover the ring-shaped coil 111.

[0066] The toroidal coil 111 includes a conductor such as copper formed in a ring shape, and one end TM1 of the conductor and the other end TM2 of the conductor are electrically connected to the power receiving circuit 120. A current flows through the toroidal coil 111 according to the magnetic field Pmg generated around the toroidal coil 111. That is, a potential difference corresponding to the current flows between the ends TM1 and TM2 of the toroidal coil 111. The power receiving coil 110 outputs the potential difference generated between the ends TM1 and TM2 of the toroidal coil 111 to the power receiving circuit 120 as a power receiving signal Vpr.

[0067] Additionally, the molding member 112, which is provided to cover the toroidal coil 111, not only maintains the shape of the toroidal coil 111, but also functions as an insulator that reduces the risk of short circuits occurring between the components of the mobile printer 1 and the toroidal coil 111 due to impacts caused by the toroidal coil 111 coming into contact with various parts of the mobile printer 1. This reduces the risk of changes to the characteristics of the toroidal coil 111 and improves the power receiving sensitivity of the power receiving coil 110 to the magnetic field Pmg.

[0068] Such a receiving coil 110 includes a coil region 114 in which a ring-shaped coil 111 through which the receiving signal Vpr propagates is located, an inner coil region 113 located inside the coil region 114, and an outer coil region 115 located outside the coil region 114.

[0069] The power receiving circuit 120 converts the power receiving signal Vpr output by the power receiving coil 110 into a DC voltage signal Vdc2 and outputs the DC voltage signal Vdc2. Specifically, the power receiving circuit 120 has a voltage conversion circuit 121, a connector 122, and a wiring board 123 on which the voltage conversion circuit 121 and the connector 122 are provided.

[0070] The voltage conversion circuit 121 includes a rectifier circuit that rectifies the high-frequency power receiving signal Vpr, a smoothing circuit that smooths the rectified voltage output by the rectifier circuit, and a transformer circuit that transforms the voltage value of the smoothed voltage output by the smoothing circuit to a predetermined voltage value and outputs it as a DC voltage signal Vdc2. The DC voltage signal Vdc2 output by the voltage conversion circuit 121 propagates through the wiring board 123 and is output from the power receiving module 11 via the connector 122.

[0071] As described above, in the power receiving module 11, the power receiving coil 110 receives a voltage signal based on the magnetic field Pmg and outputs a power receiving signal Vpr corresponding to the magnetic field Pmg to the power receiving circuit 120. The power receiving circuit 120 generates a DC voltage signal Vdc2 of a predetermined voltage value from the power receiving signal Vpr output by the power receiving coil 110 and outputs it from the connector 122.

[0072] The power receiving module 11 configured as described above receives, in a non-contact manner, the magnetic field Pmg output by the power transmitting unit 4 provided outside the mobile printer 1. Therefore, the position and method for fixing the power receiving module 11 in the mobile printer 1 are particularly important in terms of increasing the power receiving efficiency of the power receiving module 11 and reducing the risk of the magnetic field Pmg affecting the operation of the mobile printer 1.

[0073] Next, specific examples of where and how to secure the power receiving module 11 to the housing 100 of the mobile printer 1 will be described using Figures 6 to 8. Figure 6 is a diagram showing an example of how to secure the power receiving module 11 when the mobile printer 1 is viewed from the +Z side to the -Z side along the Z direction. Figure 7 is a cross-sectional view taken along line Aa of an example of how to secure the power receiving module 11 shown in Figure 6. Figure 8 is a cross-sectional view taken along line Bb of an example of how to secure the power receiving module 11 shown in Figure 6.

[0074] As shown in FIGS. 6 to 8, the power receiving module 11 is attached to the power receiving module 11 by adhesive members 201 and 202. It is fixed to an inner surface 102 a corresponding to the surface 102 of the housing 100 .

[0075] Specifically, the adhesive member 201 can be a double-sided tape that can adhere to both sides of a thin-film substrate. In other words, the adhesive member 201 includes a double-sided tape. The adhesive surface on the +Z side of the adhesive member 201 adheres to the power receiving coil 110, and the adhesive surface on the -Z side of the adhesive member 201 adheres to the surface 102 of the housing 100, specifically, to the inner surface 102a corresponding to the surface 102. That is, in the mobile printer 1 of this embodiment, the surface 102 of the housing 100 and the inner surface 102a corresponding to the surface 102 function as a power feeding surface that realizes contactless power feeding between the power transmitting unit 4 and the power supply unit 10. By fixing the power receiving coil 110 to the inner surface 102a of the surface 102, which corresponds to the power feeding surface of the mobile printer 1, using the adhesive member 201, the distance between the power receiving coil 110 of the power supply unit 10 and the power transmitting unit 4 can be shortened. As a result, the power receiving efficiency of the power supply unit 10 is improved.

[0076] Furthermore, the mobile printer 1 of this embodiment has a cutting unit 50 that cuts the recording paper P, and the cutting unit 50 is housed in the housing 100's storage space. As a result, paper dust generated when the recording paper P is cut and iron powder generated by wear on the fixed blade 54 and movable blade 56 when the cutting unit 50 cuts the recording paper P can enter the housing 100's storage space and accumulate inside the storage space. If such paper dust and iron powder enter between the power receiving coil 110 and the inner surface 102a of the surface 102, they can be easily removed and accumulated inside the storage space. As a result, the power receiving efficiency of the power supply unit 10 may decrease.

[0077] To address this issue, in the mobile printer 1 of this embodiment, the receiving coil 110 is adhered to the inner surface 102a corresponding to the surface 102 by an adhesive member 201, thereby improving adhesion between the receiving coil 110 and the inner surface 102a. As a result, the risk of paper dust and iron powder getting between the receiving coil 110 and the inner surface 102a of the surface 102 is reduced, and the risk of a decrease in the power receiving efficiency of the power supply unit 10 is reduced.

[0078] In particular, in a mobile printer 1 such as that shown in this embodiment, a smaller housing 100 is required to maintain portability. Adding a partition to such a mobile printer 1 to reduce the risk of paper dust and iron powder getting between the power receiving coil 110 and the inner surface 102a of the surface 102 makes it difficult to reduce the size of the mobile printer 1. In contrast, in the mobile printer 1 of this embodiment, the power receiving coil 110 is adhered to the inner surface 102a corresponding to the surface 102 with an adhesive member 201, which reduces the risk of the mobile printer 1 becoming larger and reduces the risk of paper dust and iron powder getting between the power receiving coil 110 and the inner surface 102a of the surface 102. In other words, the mobile printer 1 of this embodiment reduces the risk of paper dust and iron powder getting between the power receiving coil 110 and the inner surface 102a of the surface 102, reducing the risk of compromising portability, and thus reducing the risk of a decrease in power receiving efficiency in the power supply unit 10.

[0079] When the mobile printer 1 is viewed in the Z direction, at least a portion of this adhesive member 201 is preferably located between the coil internal region 113 of the power receiving coil 110 and the inner surface 102a corresponding to the surface 102, and at least a portion of the adhesive member 201 is preferably located between the region of the power receiving coil 110 that extends from the coil internal region 113 to the coil external region 115 and the inner surface 102a corresponding to the surface 102. Furthermore, as shown in FIGS. 6 to 8, when the mobile printer 1 is viewed in the Z direction, at least a portion of the adhesive member 201 is more preferably located between almost the entire surface located on the -Z side of the molded member 112 that is provided to cover the annular coil 111 of the power receiving coil 110 and the inner surface 102a corresponding to the surface 102.

[0080] The magnetic flux due to the magnetic field Pmg through which the power receiving coil 110 receives power passes at a higher density inside the annular coil 111, i.e., in the coil internal region 113. In the coil internal region 113 through which the magnetic flux passes at such a high density, adhesive member 201 is positioned at least between the power receiving coil 110 and the inner surface 102a corresponding to surface 102, and the power receiving coil 110 is fixed to the inner surface 102a corresponding to surface 102, thereby further reducing the risk that paper dust and iron powder will contribute to the magnetic field Pmg through which the power receiving coil 110 receives power. As a result, the risk that the power receiving efficiency of the power supply unit 10 will decrease due to the contribution of paper dust and iron powder is further reduced.

[0081] In this case, adhesive member 201 is positioned between power receiving coil 110 and the region extending from coil internal region 113 to coil external region 115, and inner surface 102a corresponding to surface 102, thereby further reducing the risk of paper powder and iron powder entering coil internal region 113 and further reducing the risk of paper powder and iron powder contributing to magnetic field Pmg generated around power receiving coil 110. As a result, the risk of a decrease in power receiving efficiency in power supply unit 10 is further reduced.

[0082] Furthermore, adhesive member 201 is positioned between almost the entire area of ​​one surface located on the -Z side of molding member 112 provided so as to cover annular coil 111 of power receiving coil 110 and inner surface 102a corresponding to surface 102, thereby further reducing the risk of paper powder and iron powder entering coil internal region 113 and reducing the risk of paper powder and iron powder entering magnetic field Pmg generated around power receiving coil 110. This further reduces the risk of paper powder and iron powder contributing to the problem, thereby further reducing the risk of a decrease in the power receiving efficiency of the power supply unit 10. Here, "almost the entire area of ​​one surface located on the -Z side of molded member 112 where adhesive member 201 is located" includes, for example, when power receiving coil 110 is aligned in the Z direction, a case where adhesive member 201 is located between 80% or more of the area of ​​molded member 112 of power receiving coil 110 and inner surface 102a corresponding to surface 102.

[0083] Furthermore, double-sided tape capable of adhering to both sides of a thin-film substrate can be used as the adhesive member 202. In other words, the adhesive member 202 includes a double-sided tape. The adhesive surface on the +Z side of the adhesive member 202 adheres to the power receiving circuit 120, and the adhesive surface on the -Z side of the adhesive member 202 adheres to the surface 102 of the housing 100, specifically, to the inner surface 102a corresponding to the surface 102.

[0084] That is, the power receiving circuit 120 and the power receiving coil 110 are attached to the inner surface 102a of the surface 102 on the same surface of the housing 100 using an adhesive member 202. As described above, the power receiving coil 110 and the power receiving circuit 120 are electrically connected at ends TM1 and TM2. Therefore, if the mobile printer 1 is subjected to an impact or other force, there is a risk of a poor electrical connection between the power receiving coil 110 and the power receiving circuit 120. To address this issue, attaching the power receiving circuit 120 and the power receiving coil 110 to the same surface of the housing 100 shortens the electrical distance between the power receiving coil 110 and the power receiving circuit 120 and reduces the risk of unintended stress being applied to ends TM1 and TM2, which electrically connect the power receiving circuit 120 and the power receiving coil 110, even if the mobile printer 1 is subjected to an impact or other force. As a result, the risk of poor electrical connection between the power receiving circuit 120 and the power receiving coil 110 is reduced, and the risk of noise being superimposed on the power receiving signal Vpr input to the power receiving circuit 120 is reduced, improving the accuracy of the DC voltage signal Vdc2 output by the power receiving module 11.

[0085] Here, in the present embodiment, the adhesive members 201, 202 have been described as being double-sided tape, but the adhesive members 201, 202 are not limited to double-sided tape as long as they can fix the power receiving module 11 to the inner surface 102a. Therefore, instead of double-sided tape, the adhesive members 201, 202 can also be a liquid adhesive substance that uses a vinyl acetate resin solvent, a vinyl copolymer resin solvent, or a rubber solvent, or an adhesive substance that causes a chemical reaction by adding energy such as light or heat or a reactant to a liquid that is mainly composed of components before the chemical reaction. However, when a liquid adhesive is used, depending on how the liquid adhesive is applied, variations in the relative positional relationship between the inner surface 102a corresponding to the surface 102 and the power receiving module 11 may occur, which may result in variations in power receiving efficiency, and the application state may cause an unintended gap to form between the inner surface 102a and the power receiving module 11, increasing the risk of paper powder or iron powder entering between the inner surface 102a and the power receiving module 11. In contrast, when double-sided tape is used as the adhesive members 201, 202, the risk of variations in the relative positional relationship between the inner surface 102a and the power receiving module 11 is reduced, and the risk of an unintended gap forming between the inner surface 102a and the power receiving module 11 is also reduced.

[0086] Furthermore, in the mobile printer 1 of this embodiment, the power receiving module 11 is fixed to the inner surface 102a of the surface 102, which is one of the outer shells of the casing 100, in order to improve the power receiving efficiency of contactless power transfer. In order to further improve the power receiving efficiency of this type of mobile printer 1, it is possible to consider shortening the distance between the power receiving coil 110 of the power supply unit 10 and the power transmitting unit 4. In other words, in order to improve the power receiving efficiency of contactless power transfer in the mobile printer 1, it is preferable that the distance between the power receiving coil 110 of the power supply unit 10 and the power transmitting unit 4 is short. Therefore, the thickness t1 in the Z direction of the surface 102 of the casing 100 to which the power receiving module 11 is attached, as shown in FIG. 8, should be as small as possible. preferable.

[0087] On the other hand, reducing the thickness t1 along the Z direction of the surface 102 of the housing 100 on which the power receiving module 11 is attached may reduce the strength of the mobile printer 1. In particular, the mobile printer 1 shown in this embodiment is designed to be carried and used by a user, so it is required to be strong enough to withstand impacts such as being dropped.

[0088] To address this issue, the mobile printer 1 of this embodiment has a characteristic configuration in which, in one direction from the power receiving module 11 toward the roll body accommodating section 60, along the Z direction, at least a portion of the partition section 61c that forms at least one surface of the roll body accommodating section 60 is located between the power receiving module 11 and the roll body accommodating section 60, and the thickness t2 of the partition section 61c along the Z direction is thicker than the thickness t1 of the surface 102 along the Z direction.

[0089] As a result, even if the thickness t1 along the Z direction of the surface 102 of the housing 100 to which the power receiving module 11 is attached is made as small as possible, the partition 61c can supplement the strength of the housing 100. In other words, the mobile printer 1 in this embodiment not only improves the power receiving efficiency of the power receiving module 11, but also increases the resistance to shocks such as those caused by dropping the mobile printer 1, thanks to the partition 61c located between the power receiving module 11 and the roll housing section 60. In other words, it is possible to achieve both improved power receiving efficiency for contactless power transfer and resistance to shocks such as those caused by dropping.

[0090] In the mobile printer 1 configured as described above, the housing 100 and the partition 61, including the partition 61c, are preferably made of molded resin and contain a plastic material. As described above, the mobile printer 1 of this embodiment can achieve both improved power receiving efficiency for contactless power supply and strength against impacts such as being dropped. Therefore, even if the housing 100 and the partition 61, including the partition 61c, are made of molded resin and contain a plastic material, a mobile printer 1 with sufficient strength can be achieved. As a result, the weight of the mobile printer 1, including the housing 100 and the partition 61, including the partition 61c, can be reduced, further improving the portability of the mobile printer 1.

[0091] Here, the housing 100 and the partition 61 including the partition 61c may be entirely filled with plastic material, or the housing 100 and the partition 61 including the partition 61c may include a cavity therein. This makes it possible to reduce the weight of the mobile printer 1, thereby further improving the portability of the mobile printer 1.

[0092] As shown in FIGS. 6 to 8, the mobile printer 1 also includes a static removal film 220, at least a portion of which is located between the roll housing section 60 and the power receiving module 11 and adjacent to the power receiving module 11.

[0093] In the case of a mobile printer 1 having a roll R on which recording paper P is wound, as shown in this embodiment, when the transport unit 40 pulls out the recording paper P from the roll R, the recording paper P wound around the roll R comes into contact with each other, causing charge to accumulate in the recording paper P and the roll housing section 60 and then be released as static electricity. If this static electricity affects the power receiving module 11, it can cause the power receiving module 11 to malfunction, reducing the accuracy of the DC voltage signal Vdc2 output by the power receiving module 11. As a result, the mobile printer 1, which is driven based on the DC voltage signal Vdc2, may malfunction, and the print quality of the mobile printer 1 may deteriorate.

[0094] To address this issue, in the mobile printer 1 of this embodiment, at least a portion of the static electricity removal film 220 is positioned between the roll body storage section 60 and the power receiving module 11, and is positioned adjacent to the power receiving module 11, thereby reducing the risk of static electricity generated as the recording paper P is transported affecting the power receiving module 11, and as a result, the operational stability of the mobile printer 1 is improved.

[0095] It is preferable that at least a portion of such static electricity removal film 220 is located between the roll body storage section 60 and the receiving coil 110 of the receiving module 11, and it is even more preferable that at least a portion of the static electricity removal film 220 is located so as to overlap the entire receiving coil 110 of the receiving module 11 in the direction along the Z direction.

[0096] The power receiving module 11 outputs a power receiving signal Vpr, which is the basis of the DC voltage signal Vdc2, when the power receiving coil 110 receives the magnetic field Pmg. Therefore, if static electricity contributes to the power receiving coil 110 and reduces the accuracy of the power receiving signal Vpr output by the power receiving coil 110, the accuracy of the DC voltage signal Vdc2 output by the power receiving module 11 will also reduce. By positioning the static electricity removing film 220 so that it overlaps at least the power receiving coil 110, the power receiving coil 110 can be efficiently protected from static electricity. As a result, the risk of a reduction in the accuracy of the DC voltage signal Vdc2 output by the power receiving module 11 is reduced.

[0097] Furthermore, since at least a portion of the static electricity removal film 220 is also positioned between the roll body storage section 60 and the power receiving circuit 120, the risk of static electricity generated by the transport of the recording paper P contributing to the power receiving module 11 is further reduced, and as a result, the risk of a decrease in the accuracy of the DC voltage signal Vdc2 output by the power receiving module 11 is further reduced.

[0098] In particular, in a mobile printer 1 in which the roll R is stored in the roll storage unit 60 using the drop-in method as shown in this embodiment, when the recording paper P wound around the roll R is pulled out by the transport unit 40, the recording paper P also comes into contact with the partition 61. For this reason, a mobile printer 1 in which the roll R is stored in the roll storage unit 60 using the drop-in method generates more static electricity. However, in the mobile printer 1 of this embodiment, at least a portion of the static electricity removal film 220 is located between the roll storage unit 60 and the power receiving module 11 and adjacent to the power receiving module 11. This reduces the risk of static electricity generated as the recording paper P is transported affecting the power receiving module 11, even in a mobile printer 1 that uses the drop-in method. As a result, this reduces the risk of a decrease in the accuracy of the DC voltage signal Vdc2 output by the power receiving module 11 and a decrease in the operational stability of the mobile printer 1.

[0099] As described above, the static electricity removing film 220 disposed in the housing space of the housing 100 is positioned by the protrusions 211 to 214 provided on the housing 100 .

[0100] Specifically, the housing 100 includes protrusions 211 to 214 formed on an inner surface 102a corresponding to the surface 102. The protrusion 211 is located on the +Y side of the power receiving module 11, the protrusion 212 is located on the -Y side of the power receiving module 11, the protrusion 213 is located on the +X side of the power receiving module 11, and the protrusion 214 is located on the -X side of the power receiving module 11. That is, the protrusions 211 and 212 are located opposite each other in the Y direction with the power receiving module 11 interposed therebetween, and the protrusions 213 and 214 are located opposite each other in the Y direction with the power receiving module 11 interposed therebetween. The protrusions 212 to 214 are located on all four sides of the power receiving module 11.

[0101] The static electricity removal film 220 is accommodated in the accommodation space of the housing 100 so that the short side on the +X side contacts the protrusion 213, the short side on the -X side contacts the protrusion 214, the short side on the +Y side contacts the protrusion 211, and the short side on the -Y side contacts the protrusion 212.

[0102] As a result, the static electricity removing film 220 is adjacent to the power receiving module 11 and is disposed at a predetermined position defined with respect to the power receiving module 11. As a result, the static electricity removing film 220 can reduce the risk that static electricity generated in the roll accommodating section 60 will contribute to the power receiving module 11. Note that the protrusions 211-214 may be any as long as they can position the static electricity removing film 220 at a predetermined position, and for example, some of the protrusions 211-214 may be formed on the partition wall 61. In other words, the number and arrangement of the protrusions on the housing 100 are not limited to the number and arrangement shown in FIGS. 6-8 .

[0103] Furthermore, in the case of a mobile printer 1 that uses thermal paper as the recording paper P as shown in this embodiment, the heat generated in the power receiving module 11 may affect the roll R, resulting in discoloration of the recording paper P. To address this problem, in the mobile printer 1 of this embodiment, the static electricity removing film 220 is positioned between the power receiving module 11 and the roll housing unit 60, so that the static electricity removing film 220 functions as a heat insulator, reducing the risk that the heat generated in the power receiving module 11 will affect the roll R housed in the roll housing unit 60.

[0104] As mentioned above, the mobile printer 1 is also required to be portable due to its intended use. The static electricity removal film 220, located between the power receiving module 11 and the roll housing unit 60, has heat insulating properties, which reduces the risk of static electricity generated in the roll housing unit 60 affecting the power receiving module 11 without increasing the size of the mobile printer 1, and also reduces the risk of heat generated in the power receiving module 11 affecting the roll R housed in the roll housing unit 60. As a result, the operational stability of the mobile printer 1 is improved, the risk of discoloration of the recording paper P is reduced, and the reliability of the mobile printer 1 is further improved.

[0105] 4. Propagation of voltage signals inside the housing 100 Next, we will explain the relationship between the layout of various components and the flow of electrical signals in the mobile printer 1. Figure 9 is a diagram explaining the flow of electrical signals inside the mobile printer 1.

[0106] 9, the power receiving module 11 is positioned in the Z direction of the mobile printer 1 so that at least a portion of the power receiving coil 110 overlaps the center between the surfaces 103 and 104, and the power receiving circuit 120 is disposed in the housing space of the housing 100 on the surface 103 side of the power receiving coil 110, with the connector 122 facing the surface 105. One end of a wire WI1 is attached to the connector 122. The other end of the wire WI1 is attached to a connector 82 on the wiring board 80. This allows the DC voltage signal Vdc2 output by the power receiving module 11 to be input to the wiring board 80.

[0107] The wiring board 80 is located on the surface 105 side of the power receiving module 11. On the surface 103 side of the wiring board 80, a connector CN1 is located so that at least a portion of it is exposed to the outside of the housing 100 through an opening provided in the surface 103 of the housing 100. In other words, the connector CN1 is provided so that the user can attach and detach a cable. A DC voltage signal Vdc1 is input to the wiring board 80 of the mobile printer 1 via this connector CN1 and the cable connected to the connector CN1.

[0108] In addition, a connector CN2 is provided on the −Z side surface of the wiring board 80. Connector CN2 is located on the side 103 of the battery accommodating section 70 to which the battery module 13 is attached. In other words, connector CN2 is located on the side 103 of the wiring board 80. A DC voltage signal Vdc1 input to the wiring board 80 via connector CN1 and a DC voltage signal Vdc2 input to the wiring board 80 via connector 82 are propagated through connector CN2 via a power supply switching circuit 12 (not shown in FIG. 9 ) provided on the wiring board 80 and supplied to the battery module 13 attached to the battery accommodating section 70. As a result, charge is stored in the battery module 13. The battery module 13 then generates a DC voltage signal Vbat according to the amount of charge it has stored and inputs it to the wiring board 80 via connector CN2.

[0109] That is, the DC voltage signals Vdc1 and Vdc2 that serve as the driving power for the mobile printer 1, and the DC voltage signal Vbat generated based on the DC voltage signals Vdc1 and Vdc2, are both on the surface 103 side of the wiring board 80, and are input from the surface 103 side of the mobile printer 1 to the wiring board 80 on which the control unit 20 is provided.

[0110] In other words, the power receiving module 11 is arranged in the accommodation space of the housing 100 so that the shortest distance between the power receiving circuit 120 and surface 103 is shorter than the shortest distance between the power receiving circuit 120 and surface 104, the connector CN1 is arranged in the accommodation space of the housing 100 so that the shortest distance between the connector CN1 and surface 103 is shorter than the shortest distance between the connector CN1 and surface 104, and the connector CN2 is arranged in the accommodation space of the housing 100 so that the shortest distance between the connector CN2 and surface 103 is shorter than the shortest distance between the connector CN2 and surface 104.

[0111] Then, a power supply circuit 14 (not shown in FIG. 9) provided on the wiring board 80 generates a drive voltage signal Vd from a DC voltage signal Vbat generated based on the DC voltage signals Vdc1 and Vdc2 input via the connector CN2, and outputs the drive voltage signal Vd to a control unit 20 (not shown in FIG. 9) provided on the wiring board 80.

[0112] The control unit 20 generates and outputs a medium transport signal Str based on the drive voltage signal Vd. The medium transport signal Str output by the control unit 20 propagates through a wire WI2 attached to a connector 83a provided on the surface 104 side of the wiring board 80, and is supplied to a transport motor 42 provided on the surface 104 side of the storage space of the housing 100. In this case, the wire WI2 is arranged along the surface 104. That is, the mobile printer 1 includes a wire WI2 that electrically connects the control unit 20 and the transport unit 40, and the wire WI2 is housed in the storage space of the housing 100 so that the shortest distance between the wire WI2 and the surface 103 is longer than the shortest distance between the wire WI2 and the surface 104.

[0113] The control unit 20 also generates and outputs a head drive signal Sdr based on the drive voltage signal Vd. The head drive signal Sdr output by the control unit 20 propagates through a wiring WI3 attached to a connector 83b provided on the surface 104 side of the wiring board 80, and is supplied to the print head 30 from the end of the print head 30 on the surface 104 side, which is provided on the surface 106 side, in the accommodation space of the housing 100. In this case, the wiring WI3 is arranged along the surface 104. In other words, the mobile printer 1 includes a wiring WI3 that electrically connects the control unit 20 and the print head 30, and the wiring WI3 is accommodated in the accommodation space of the housing 100 so that the shortest distance between the wiring WI3 and the surface 103 is longer than the shortest distance between the wiring WI3 and the surface 104.

[0114] The control unit 20 also generates and outputs a media cut signal Sct based on the drive voltage signal Vd. The media cut signal Sct output by the control unit 20 is propagated through a wire WI4 attached to a connector 83c provided on the surface 104 side of the wiring board 80, and is supplied to a cut motor 52 provided on the surface 104 side in the housing space of the housing 100. In the figure, the wiring WI4 is arranged along the surface 104. That is, the mobile printer 1 includes the wiring WI4 that electrically connects the control unit 20 and the cutting unit 50, and the wiring WI4 is housed in the housing 100 so that the shortest distance between the wiring WI4 and the surface 103 is longer than the shortest distance between the wiring WI4 and the surface 104.

[0115] As described above, in the mobile printer 1 of this embodiment, the DC voltage signals Vdc1, Vdc2, and Vbat, which are the basis for the drive voltage signal Vd supplied to the control unit 20, are all supplied to the wiring board 80 from the surface 103 side of the wiring board 80. Then, based on the drive voltage signal Vd, the control unit 20 provided on the wiring board 80 generates a medium transport signal Str, a head drive signal Sdr, and a medium cut signal Sct for the mobile printer 1 to execute the printing process. Then, the medium transport signal Str, head drive signal Sdr, and medium cut signal Sct output by the control unit 20 are all propagated through the wiring WI2, WI3, and WI4 located on the surface 104 side of the casing 100, and are supplied to the transport unit 40, print head 30, and cutting unit 50.

[0116] This reduces the risk of mutual interference between signals supplied to the control unit 20 and signals output by the control unit 20 inside the mobile printer 1, improving the operational stability of the mobile printer 1. Therefore, even in mobile printers 1 where there is increasing demand for smaller size for portability, the risk of mutual interference between signals supplied to the control unit 20 and signals output by the control unit 20 is reduced, and as a result, even when the mobile printer 1 is made smaller, the risk of malfunctions in the mobile printer 1 is reduced and the operational stability of the mobile printer 1 is improved.

[0117] Here, the DC voltage signal Vdc2 is an example of a base drive voltage signal, the surface 102 of the housing 100 and the inner surface 102a corresponding to the surface 102 are examples of a power supply surface, and of the surfaces 102 of the housing 100, the surface 102 that constitutes the battery storage section 70 is an example of a partition wall.

[0118] 5. Effects As described above, in the mobile printer 1 of this embodiment, the power receiving module 11 is fixed to the inner surface 102a corresponding to the surface 102 of the housing 100 by adhesive members 201, 202, thereby shortening the distance between the power receiving coil 110 of the power supply unit 10 and the power transmitting unit 4, thereby improving the power receiving efficiency of the power supply unit 10.

[0119] Furthermore, in the mobile printer 1 of this embodiment, the adhesive member 201 adheres the power receiving coil 110 to the inner surface 102a corresponding to the surface 102, thereby reducing the risk of the mobile printer 1 becoming larger and also reducing the risk of paper dust generated when the recording paper P is cut or iron dust generated by wear of the fixed blade 54 and movable blade 56 getting between the power receiving coil 110 and the inner surface 102a of the surface 102. This reduces the risk of a decrease in the power receiving efficiency of the power supply unit 10 due to paper dust or iron dust getting between the power receiving coil 110 and the inner surface 102a of the surface 102.

[0120] Furthermore, in the mobile printer 1 of this embodiment, in the direction from the power receiving module 11 toward the roll accommodating unit 60, that is, along the Z direction, at least a portion of the partition wall 61c that forms at least one surface of the roll accommodating unit 60 is located between the power receiving module 11 and the roll accommodating unit 60, and the thickness t2 of the partition wall 61c along the Z direction is thicker than the thickness t1 of the surface 102 along the Z direction. This characteristic configuration allows the partition wall 61c to supplement the strength of the housing 100 even when the thickness t1 along the Z direction of the surface 102 of the housing 100 to which the power receiving module 11 is attached is made as small as possible. As a result, This improves the power receiving efficiency of the contactless power supply and ensures that the mobile printer 1 has sufficient strength.

[0121] Furthermore, the mobile printer 1 in this embodiment includes a static electricity removal film 220, at least a portion of which is located between the roll housing section 60 and the power receiving module 11 and adjacent to the power receiving module 11. This reduces the risk of static electricity generated as the recording paper P is transported affecting the power receiving module 11, even in a mobile printer 1 that has a roll R on which recording paper P is wound. As a result, the operational stability of the mobile printer 1 is improved.

[0122] Furthermore, in the mobile printer 1 of this embodiment, the power receiving circuit 120 of the power receiving module 11, which receives driving power from outside the mobile printer 1 via contactless power supply, is arranged in the storage space of the housing 100 so that the shortest distance between the power receiving circuit 120 and surface 103 is shorter than the shortest distance between the power receiving circuit 120 and surface 104, the connector CN1, which receives driving power from outside the mobile printer 1 via contactless power supply, is arranged in the storage space of the housing 100 so that the shortest distance between the connector CN1 and surface 103 is shorter than the shortest distance between the connector CN1 and surface 104, and the connector CN2, through which the DC voltage signal Vbat output by the battery module 13 is propagated, is arranged in the storage space of the housing 100 so that the shortest distance between the connector CN2 and surface 103 is shorter than the shortest distance between the connector CN2 and surface 104. In addition, in the mobile printer 1 of this embodiment, the wiring WI2, which electrically connects the control unit 20 and the transport unit 40 and transmits the medium transport signal Str supplied to the transport unit 40, is accommodated in the storage space of the housing 100 so that the shortest distance between the wiring WI2 and the surface 103 is longer than the shortest distance between the wiring WI2 and the surface 104.

[0123] That is, in the mobile printer 1 of this embodiment, inside the housing 100, the signals supplied to the control unit 20 and the signals output by the control unit 20 propagate near the surfaces of the housing 100 that face each other. This reduces the risk of mutual interference between the signals supplied to the control unit 20 and the signals output by the control unit 20, and as a result, the operational stability of the mobile printer 1 is improved.

[0124] Although the embodiments and modifications have been described above, the present invention is not limited to these embodiments and can be embodied in various forms without departing from the spirit of the present invention. For example, the above embodiments can be combined as appropriate.

[0125] The present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations with the same functions, methods, and results, or configurations with the same purpose and effects). The present invention also includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. The present invention also includes configurations that achieve the same effects as the configurations described in the embodiments or that can achieve the same purpose. The present invention also includes configurations in which publicly known technology is added to the configurations described in the embodiments.

[0126] The following can be derived from the above-described embodiment.

[0127] One aspect of the mobile printer is a roll body storage section that stores a roll body around which recording paper is wound; a print head that prints on the recording paper; a transport unit that pulls out the recording paper from the roll and transports the recording paper to the print head; a power supply unit that supplies a driving voltage signal to the print head and the transport unit; a housing that covers the roll housing unit, the print head, the transport unit, and the power supply unit; Static electricity removal film, Equipped with the power supply unit has a power receiving module that receives a signal based on an external power supply voltage signal by wireless power supply; At least a portion of the static electricity removing film is located between the roll housing section and the power receiving module and adjacent to the power receiving module.

[0128] In this mobile printer, the power supply unit has a power receiving module that receives a signal based on an external power supply voltage signal via wireless power supply, and at least a portion of the static electricity removing film is positioned between the roll housing that houses the roll and the power receiving module, adjacent to the power receiving module, reducing the risk of static electricity caused by the charge accumulated when recording paper is pulled out of the roll being transferred to the power receiving module, thereby improving the operational stability of the power receiving module and the mobile printer.

[0129] In one embodiment of the mobile printer, The roll storage section may store the roll by a drop-in method.

[0130] With this mobile printer, even when the roll is housed in the roll housing using a drop-in system, at least a portion of the static electricity removing film is located between the roll housing and the power receiving module and adjacent to the power receiving module, reducing the risk of static electricity building up in the power receiving module when recording paper is pulled out of the roll.As a result, the operational stability of the power receiving module is improved, and the operational stability of the mobile printer is also improved.

[0131] In one embodiment of the mobile printer, The power receiving module includes: a power receiving coil that receives a power transmission signal based on the power supply voltage signal as a power receiving signal; a power receiving circuit that converts the power receiving signal received by the power receiving coil into a base drive voltage signal; Including, At least a portion of the static electricity removing film may be located between the roll housing section and the power receiving coil.

[0132] With this mobile printer, the static electricity removal film is positioned between the roll body storage section and the power receiving module, and at least adjacent to the power receiving coil of the power receiving module, thereby efficiently reducing the risk of static electricity caused by the charge accumulated when recording paper is pulled out of the roll body contributing to the power receiving module.

[0133] In one embodiment of the mobile printer, At least a portion of the static electricity removing film may be located between the roll housing section and the power receiving circuit.

[0134] With this mobile printer, the static electricity removal film is positioned between the roll body storage section and the power receiving module, and at least adjacent to the power receiving coil and power receiving circuit of the power receiving module, thereby efficiently reducing the risk of static electricity caused by the charge accumulated when recording paper is pulled out of the roll body contributing to the power receiving module.

[0135] In one embodiment of the mobile printer, The static electricity removing film may have heat insulating properties.

[0136] This mobile printer reduces the risk of heat generated in the power receiving module affecting the roll, which reduces the risk of discoloration of the recording paper even when thermal paper is used, improving the reliability of the mobile printer 1.

[0137] In one embodiment of the mobile printer, The housing may include a protrusion for fixing the static electricity removing film.

[0138] With this mobile printer, the layout of the mobile printer in the housing is uniformly defined, and as a result, static electricity can be removed efficiently and uniformly by the static electricity removal filter.

[0139] In one embodiment of the mobile printer, the power supply unit includes a battery module; A partition may be located between the battery module and the power receiving module.

[0140] In one embodiment of the mobile printer, The power receiving module may be fixed to a power feeding surface of the housing.

[0141] With this mobile printer, the power receiving module is disposed near the power supply surface of the housing, and as a result, the power receiving efficiency is improved by the contactless power supply performed by the power receiving module.

[0142] In one embodiment of the mobile printer, The power receiving module may be positioned so that at least a portion of the power receiving module overlaps with the roll body accommodating section in a direction from the power feeding surface toward the power receiving module.

[0143] In one embodiment of the mobile printer, a control unit for controlling the operation of at least one of the print head and the transport unit; The power receiving module may be positioned so as not to overlap with the control unit in a direction along a direction from the power feeding surface toward the power receiving module.

[0144] With this mobile printer, when the power receiving module performs contactless power supply, the risk of large amounts of magnetic flux interfering with the control unit is reduced, further improving the accuracy of the signals received by the power receiving module via contactless power supply.

[0145] In one embodiment of the mobile printer, The power receiving module may be positioned so as not to overlap with any electronic components in a direction from the power feeding surface toward the power receiving module.

[0146] With this mobile printer, when the power receiving module performs contactless power supply, the risk of large amounts of magnetic flux interfering with electronic components is reduced, further improving the accuracy of the signals received by the power receiving module via contactless power supply. [Explanation of symbols]

[0147] 1...Mobile printer, 2...Commercial power supply, 3...Power supply circuit, 4...Power transmission unit, 5...Power transmission circuit, 6...Power transmission coil, 10...Power supply unit, 11...Power receiving module, 12...Power supply off replacement circuit, 13... battery module, 14... power supply circuit, 20... control unit, 21... control circuit, 22... non-volatile memory, 23... receiving buffer, 24... print head drive control section, 25... recording paper transport control section, 26... recording paper cutting control section, 30... print head, 32... resistor, 40... transport unit, 42... transport motor, 44... opening, 46... gear, 48... platen roller, 50... cutting unit, 52... cutting motor, 54... fixed blade, 56... movable blade, 60... roll body storage section, 61, 61a to 61c... partition section, 70... battery storage section, 80... wiring board, 82, 83 a to 83c...connector, 100...housing, 101 to 106...surface, 102a...inner surface, 110...receiving coil, 111...annular coil, 112...molded member, 113...internal coil region, 114...coil region, 115...external coil region, 120...receiving circuit, 121...voltage conversion circuit, 122...connector, 123...wiring board, 160...discharge port, 201, 202...adhesive member, 211 to 214...protrusion, 220...static removal film, CN1, CN2...connector, P...recording paper, R...roll body, TM1, TM2...end, UI...operation unit, WI1 to WI4...wiring, t1, t2...thickness

Claims

1. a roll body storage section that stores a roll body around which recording paper is wound; a print head that prints on the recording paper; a transport unit that pulls out the recording paper from the roll and transports the recording paper to the print head; a power supply unit that supplies a driving voltage signal to the print head and the transport unit; a housing that covers the roll housing unit, the print head, the transport unit, and the power supply unit; Static electricity removal film, Equipped with the power supply unit has a power receiving module that receives a signal based on an external power supply voltage signal by wireless power supply; At least a portion of the static electricity removing film is located between the roll housing unit and the power receiving module and adjacent to the power receiving module. A mobile printer characterized by:

2. The roll body accommodating section accommodates the roll body by a drop-in method.

2. The mobile printer according to claim 1.

3. The power receiving module includes: a power receiving coil that receives a power transmission signal based on the power supply voltage signal as a power receiving signal; a power receiving circuit that converts the power receiving signal received by the power receiving coil into a base drive voltage signal; Including, At least a portion of the static electricity removing film is located between the roll housing unit and the power receiving coil.

3. The mobile printer according to claim 1 or 2.

4. At least a portion of the static electricity removing film is located between the roll housing unit and the power receiving circuit.

4. The mobile printer according to claim 3.

5. The static electricity removing film has heat insulating properties.

5. The mobile printer according to claim 1, wherein the first and second electrodes are electrically connected to the first and second electrodes.

6. the housing includes a protrusion for fixing the static electricity removing film; 6. The mobile printer according to claim 1, wherein the first and second electrodes are electrically connected to the first and second electrodes.

7. the power supply unit includes a battery module; a partition wall is located between the battery module and the power receiving module; 7. The mobile printer according to claim 1, wherein the printer is a printer having a plurality of printing heads.

8. The power receiving module is fixed to the power supply surface of the housing.

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

9. the power receiving module is positioned so that at least a portion of the power receiving module overlaps with the roll body accommodating section in a direction along a direction from the power feeding surface toward the power receiving module; The mobile printer according to claim 8 .

10. a control unit for controlling the operation of at least one of the print head and the transport unit; the power receiving module is positioned so as not to overlap with the control unit in a direction along a direction from the power feeding surface toward the power receiving module; 10. The mobile printer according to claim 8 or 9.

11. the power receiving module is positioned so as not to overlap with any electronic component in a direction from the power feeding surface toward the power receiving module; 11. The mobile printer according to claim 8, wherein the printer is a printer having a plurality of printing heads.

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