JP7092231B2 - Printing equipment - Google Patents

Description

The present invention relates to a printing device for printing on roll paper, and in particular, is a compact device having a variable installation angle, which can suppress a heat rise of an electronic circuit board which is easily affected by heat without increasing the number of parts. The present invention relates to a printing apparatus or the like having a substrate arrangement that can also be applied to.

In recent years, there are printers having a function of connecting an electronic device such as a tablet via a USB connector and charging the electronic device. In such a printer, since a large amount of electric power is required to charge a tablet or the like, there is a problem that the power supply circuit generates heat and the temperature of the control circuit or the like rises.

In response to such a problem, in Patent Document 1 below, in order to efficiently dissipate heat generated from a component mounted on a circuit board, heat is dissipated on the lower surface of a circuit board on which an electronic module such as a winding component is formed. A structure has been proposed in which plates are arranged facing each other, a heat conductor is filled between the lower surface of the winding component and the upper surface of the circuit board, and heat generated from the winding component is dissipated.

Japanese Unexamined Patent Publication No. 2015-60923

However, in the structure disclosed in Patent Document 1, it is necessary to add a heat sink, a heat conductor, and the like, and there are problems such as an increase in cost and an increase in mounting man-hours due to an increase in the number of parts.

Furthermore, in a small printing device with a variable installation angle, the space for arranging each electronic circuit board is limited, and the direction of heat flow changes depending on the installation angle. Therefore, special consideration is required for the arrangement of the electronic circuit board. ..

Therefore, an object of the present invention is printing having a substrate arrangement that can suppress the heat rise of an electronic circuit board that is easily affected by heat without increasing the number of parts and that can be applied to a compact and variable installation angle device. The purpose is to provide equipment, etc.

In order to achieve the above object, one aspect of the present invention is that a printing device that prints on roll paper accommodates a first substrate including a control circuit, a second substrate including a power supply circuit, and the roll paper. A roll paper storage unit is provided, and the first substrate and the second substrate are arranged on both sides of the roll paper storage unit sandwiching the roll paper storage unit.

As a result, the electronic circuit board having a power supply circuit that generates heat and the electronic circuit board having heat-sensitive electronic components can be separated as separate bodies, and there is a roll paper storage section between the two, making it difficult for heat to be transferred. It is possible to suppress the temperature rise of the substrate.

Further, in the above invention, the preferred embodiment thereof is that the printing apparatus includes a substantially rectangular parallelepiped housing, the first substrate is arranged in a peripheral region of a first corner of the housing, and the second substrate is , It is characterized in that it is arranged in the peripheral region of the second corner diagonal to the first corner.

As a result, the electronic circuit board provided with the heat-sensitive electronic components can be separated from the electronic circuit board provided with the power supply circuit that generates heat, and the heat rise of the heat-sensitive electronic circuit board can be suppressed. Further, the same effect can be obtained regardless of the installation angle of the printing device.

Further, in the above invention, in a preferred embodiment, the printing apparatus includes a substantially rectangular parallelepiped housing, the first substrate is arranged in a peripheral region of the first surface of the housing, and the second substrate is , It is characterized in that it is arranged in the peripheral region of the second surface facing the first surface.

As a result, the electronic circuit board provided with the heat-sensitive electronic components can be separated from the electronic circuit board provided with the power supply circuit that generates heat, and the heat rise of the heat-sensitive electronic circuit board can be suppressed.

Further, in the above invention, the preferred embodiment is characterized in that the second substrate is integrated with a connector portion for connecting to a peripheral device.

This makes it possible to efficiently use the limited internal space in a small device.

Further, in the above invention, the preferred embodiment is characterized in that the connector portion is for connecting a cache drawer.

As a result, an electronic circuit board equipped with a power supply circuit that generates heat can be integrated with a modular connector (drawer kick connector) for connecting a cash drawer that is not easily affected by heat, and the internal space can be used efficiently. can.

Further, in the above invention, the preferred embodiment is characterized in that the first substrate includes at least one of a CPU, a memory, and an IC for controlling an interface.

As a result, a heat-sensitive CPU, memory, an IC that controls an interface, etc. can be provided in one electronic circuit board, and can be separated from the electronic circuit board provided with a power supply circuit that generates heat. Can be prevented.

Further, in the above invention, a preferred embodiment thereof is characterized in that the printing apparatus can change the installation angle.

This makes it possible to provide a printing apparatus with high user convenience while suppressing the influence of heat on the first substrate.

It is a perspective view when the printer 1 is installed horizontally. It is a perspective view when the printer 1 is installed vertically. It is a side sectional view of the printer 1. It is the schematic which exemplifies the dimensional relationship of the printer 1 and the roll paper 9. It is a side sectional view of the printer 1. It is a perspective view which shows the internal structure when the printer 1 is installed horizontally. It is a perspective view which shows the internal structure when the printer 1 is seen from another angle. It is a figure which showed schematically the substrate area (face-to-face) in the printer 1. It is a figure which showed schematically the substrate area (diagonal) in printer 1.

Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. However, such embodiments do not limit the technical scope of the invention. In the figure, the same or similar items will be described with the same reference number or reference symbol.

1 and 2 are perspective views according to an example of an embodiment of a printing apparatus to which the present invention is applied.

The printer 1 according to the embodiment of the present embodiment shown in FIGS. 1 and 2 is a small printer for printing receipts that prints on roll paper 9 wound in a roll shape. In this printer 1, the electronic circuit boards provided are the electronic circuit board (hereinafter referred to as the main board) (first board) including electronic components such as a CPU, memory, and interface control IC that are easily affected by heat, and heat. A roll paper storage unit that separates (separates) from an electronic circuit board (hereinafter referred to as a sub-board) (second board) provided with a power supply circuit that emits power, and sandwiches the roll paper storage unit 3 that stores the roll paper. Place them apart from each other at positions on both sides of 3. With such a configuration, it is possible to suppress the heat rise of the main board without increasing the number of parts and even if the installation angle changes.

The printer 1 shown in FIGS. 1 and 2 is, for example, a receipt printer used at a store cashier or the like, uses roll paper 9 as a printing medium, and adopts a thermal method as a printing method.

FIG. 1 is a perspective view when the printer 1 is installed horizontally (when the print medium is discharged horizontally on the installation surface (hereinafter referred to as horizontal installation)). FIG. 2 is a perspective view of the case where the printer 1 is installed vertically (when the print medium is ejected perpendicularly to the installation surface (hereinafter referred to as vertical installation)).

Hereinafter, the exterior portion of the printer 1 will be described with reference to FIGS. 1 and 2.

As shown in FIGS. 1 and 2, the printer 1 has a back cover 2a that covers the back surface of the printer 1 body, a bottom cover 2b that covers the bottom surface, and a housing 2 (exterior case) that covers the printer 1 body such as the front cover 2c. It is provided with a paper ejection port 4 or the like for ejecting the roll paper 9.

As shown in FIGS. 1 and 2, the housing 2 has a substantially rectangular parallelepiped shape.

The front cover 2c is attached to the front surface of the housing 2 as an exterior case that covers the opening / closing door 12 (not shown) to which the lower end is hinged. By opening the opening / closing door 12, the roll paper storage unit 3 formed inside the printer 1 main body is opened, and the roll paper 9 can be replaced.

The back cover 2a and the bottom cover 2b can be removed and replaced, and the printer 1 can be used by changing the installation angle (90 °) by alternately replacing the back cover 2a and the bottom cover 2b. can. That is, it can be used in horizontal installation and vertical installation.

FIG. 3 is a side sectional view when the printer 1 is installed horizontally. More specifically, FIG. 3 is a cross-sectional view taken along a plane perpendicular to the central axis of the roll paper 9 stored in the roll paper storage unit 3. Hereinafter, the internal configuration of the printer 1 will be described with reference to FIG. 3 in the case of horizontal installation.

The roll paper 9 is a receipt paper on which print data is printed by the printer 1.

The roll paper storage unit 3 is a storage unit for storing the roll paper 9. As shown in FIG. 3, a roll paper holder 6 is provided in the roll paper storage unit 3 to support the roll paper 9 stored in the roll paper storage unit 3.

The open / close door 12 covered by the front cover 2c has a platen roller 11, and a print head 13 is arranged at a position facing the platen roller 11.

The platen roller 11 sandwiches the roll paper 9 together with the print head 13, and although not shown, the platen roller 11 is rotated by a motor to pull out the roll paper 9 and send it to the paper ejection port 4.

The print head 13 is a printing unit having a plurality of heat generating resistors on the lower surface thereof. The roll paper 9 pulled out from the roll paper storage unit 3 due to the rotation of the platen roller 11 is sandwiched between the platen roller 11 and the print head 13, and prints when passing between the platen roller 11 and the print head 13. The heat generated by the head 13 causes printing (recording) on the roll paper 9.

The auto cutter 8 is a cutter having a fixed blade and a working blade for cutting the roll paper 9 after the receipt is printed as described above. When the printing of the receipt is completed, the auto cutter 8 operates the operating blade to cut the receipt.

The paper ejection port 4 is an opening for ejecting the roll paper 9 printed (recorded) by the print head 13 and cut by the auto cutter 8.

FIG. 4 is a schematic view illustrating the dimensional relationship between the printer 1 and the roll paper 9. The printer 1 according to the embodiment of the present embodiment is a small device, and in order to make the size of the housing 2 as small as possible, the size (diameter) of the roll paper 9 is the length of the minimum space for storing the parts. Is the dimension of the housing 2. For example, in the case of a type in which a roll paper 9 having an outer diameter D of 83 (mm) is stored and used, the dimension (L shown in FIG. 4) of the housing 2 of the printer 1 is 127 (mm). In this case, the ratio (L / D) of the dimension L to the outer diameter D is 1.5. As another example, roll paper 9 having a different outer diameter D such as 42 (mm) or 58 (mm) may be used, but this ratio is approximately 1.4 to 1.8. Designed between. In the printer 1, parts such as a main board 51, a sub board 71, and a roll paper 9, which will be described later, are housed in such a limited space.

The printer 1 having the above configuration is characterized by a main board 51 and a sub board 71 inside the printer, and the details thereof will be described below.

FIG. 5 is a side sectional view when the printer 1 is horizontally installed, as in FIG. 3.

First, the electronic circuit board and the like provided in the printer 1 will be described with reference to FIG.

The main board 51 is an electronic circuit board (a board including a control circuit) including each electronic component that controls the printer 1. The main board 51 is composed of one or a plurality of electronic circuit boards, and mainly includes a CPU that controls the operation of the printer 1, a memory that stores various data, a USB interface, and Ethernet (registered trademark). It includes an interface and an IC (interface control IC) that controls various interfaces such as a Wi-Fi (registered trademark) interface. The printer 1 has various connectors for connecting peripheral devices and the printer 1 (for example, RS232C (for example, Ethernet cable connector), USB upstream port connector, AC adapter (power connector), status sheet button, etc. (all of which are shown in the figure). (Not shown)) (connector portion) is provided, and the main board 51 is integrated with these connector groups.

The sub-board 71 is an electronic circuit board including a power supply circuit, and is an electronic circuit board separate from the main board 51. It is connected to the main board 51 by a bundle of a plurality of electric wires (hereinafter referred to as a harness) (not shown) used for signal communication. The sub-board 71 is integrated with the connector 72 described later.

The connector 72 is a modular connector (so-called drawer kick connector) for connecting the cash drawer (not shown) and the printer 1 when the printer 1 is used at a store cashier or the like. The connector 72 and the cash drawer are connected by a harness, specifically, one plug of the harness is attached to the connector 72 and the other plug (not shown) is attached to the cash drawer.

Next, the substrate arrangement of the main substrate 51 and the sub substrate 71 will be described with reference to FIG.

Here, the CPU, memory, interface control IC, and the like provided in the main board 51 are vulnerable to heat, and the electronic circuit board (main board 51) provided with these heat-sensitive electronic components has a power supply circuit that emits heat. It is separated from the electronic circuit board (sub-board 71) provided and arranged at a distant position. Specifically, the main substrate 51 and the sub substrate 71 are arranged in the regions on both sides of the roll paper storage unit 3 (regions 5 and 7 in FIG. 5). In other words, the main board 51 and the sub board 71 are arranged in the regions on the opposite sides of the roll paper storage portion 3 as the center. More specifically, as shown in FIG. 5, the main substrate 51 and the sub substrate 71 are located in the regions on both sides of the roll paper storage portion 3 sandwiching the roll paper storage portion 3 (regions 5 and 7 in FIG. 5). Placed apart.

In the case shown in FIG. 5, the main board 51 is arranged in the upper surface P1 of the housing 2, that is, the region 5 near the upper surface P1 horizontal to the installation surface G of the printer 1. Similarly, the sub-board 71 is arranged in the region 7 near the lower surface P2 of the housing 2. In this case, the main board 51 and the sub-board 71 are arranged in peripheral regions (each is an inner region of the housing 2) of the upper surface P1 and the lower surface P2, which face each other of the housing 2.

FIG. 6 is a perspective view showing an internal structure when the printer 1 is installed horizontally.

As shown in FIG. 6, the main board 51 and the sub board 71 are arranged at positions on the upper surface and the lower surface of the main body of the printer 1 with the roll paper storage portion 3 sandwiched between them. That is, they are arranged on the upper surface and the lower surface (opposite surfaces of the rectangular parallelepiped) in the main body of the printer 1 having a substantially rectangular parallelepiped shape. Further, although not shown in FIG. 6, the roll paper accommodating portion 3 is located in the region between the main substrate 51 and the sub substrate 71. Further, as shown in FIG. 6, the connector 72 is opened on the side surface, and the plug is attached and detached from the side.

FIG. 7 is a perspective view showing the internal structure of the printer 1 when viewed from another angle.

Also in FIG. 7, the positional relationship between the main substrate 51 and the sub substrate 71 described with reference to FIG. 6 can be seen.

The arrangement positions of the main board 51 and the sub board 71 in the printer 1 according to the embodiment of the present embodiment have been described above, but this is only an example, and they are mutually in the main body of the printer 1 having a substantially rectangular parallelepiped shape or the housing 2. The configuration may be such that the main substrate 51 and the sub-printer 71 are separately arranged in the peripheral region of the facing surfaces or the peripheral region of the corners diagonal to each other.

Hereinafter, face-to-face or diagonal peripheral regions will be specifically described.

FIG. 8 is a diagram schematically showing a substrate region (face-to-face) in the printer 1.
The rectangular parallelepiped shown in FIG. 8 shows the housing 2 of the printer 1. The regions M1 and M2 shown in FIG. 8 indicate regions in which the main substrate 51 and the sub substrate 71 are arranged, respectively. The regions M1 and M2 are the peripheral regions (surfaces S1 and M2) of one surface S1 (first surface) of the housing 2 and the surfaces facing the surface S1 (faces facing each other) S2 (second surface), respectively. Area along S2).

When the main board 51 and the sub board 71 are arranged in the peripheral area of the facing surfaces in this way, the surface on which the main board 51 is arranged does not come to the upper surface when the printer 1 is installed. It is more desirable to configure.

FIG. 9 is a diagram schematically showing a substrate region (diagonal) in the printer 1.

The rectangular parallelepiped shown in FIG. 9 shows the housing 2 of the printer 1 as in FIG. 8. The peripheral region N1 of the corner portion K1 (first corner) and the peripheral region N2 of the corner portion K2 (second corner) shown in FIG. 9 indicate regions in which the main substrate 51 and the sub substrate 71 are arranged, respectively. There is. Peripheral regions N1 and N2 of the corner portions K1 and K2 are peripheral regions of one corner portion K1 of the housing 2 and a corner portion (diagonal) K2 diagonal to the corner portion K1, respectively.

As described above, in the printer 1 according to the embodiment of the present embodiment, the main board 51 having heat-sensitive electronic components and the sub-board 71 having a power supply circuit that generates heat are separated from each other, and they are separated from each other by roll paper. It is arranged on both sides (opposite to each other) of the roll paper storage portion 3 sandwiching the storage portion 3.

Therefore, the main board 51 provided with heat-sensitive electronic components is separated from the sub-board 71 provided with a power supply circuit that generates heat, and there is a roll paper storage unit 3 in between, so that heat is difficult to transfer, so that the heat of the main board 71 is difficult to transfer. Can be suppressed from rising. Further, by arranging the main substrate 51 and the sub substrate 71 in the above-mentioned facing regions, the same effect can be obtained. Further, even when the diagonal is used, the same effect can be obtained regardless of the installation direction.

Further, by integrating the sub-board 71 with various connectors for connecting the peripheral device and the printer 1, the limited internal space can be efficiently used in the case of a small device.

Further, by integrating the connector 72 for connecting the sub-board 71 and peripheral devices with the modular connector (drawer kick connector) for connecting the cash drawer, which is not easily affected by the heat dissipation of the power supply circuit, the internal space of the printer 1 is reached. Can be used efficiently.

Further, the main board 51 is provided with a heat-sensitive CPU, a memory, an interface control IC, and the like, and is separated from the sub board 71 having a power supply circuit that generates heat. Can be prevented.

Further, although the installation angle of the printer 1 can be changed, the main board 51 can be protected from heat regardless of the installation angle by the arrangement of the main board 51 and the sub board 71 described above.

The printer 1 is a thermal printer, but the printer 1 may be a printer that employs another printing method such as an inkjet printer.

The scope of protection of the present invention is not limited to the above-described embodiment, but extends to the inventions described in the claims and their equivalents.

1 ... Printer, 2 ... Housing, 2a ... Back cover, 2b ... Bottom cover, 2c ... Front cover, 3 ... Roll paper storage, 4 ... Opening, 5 ... Area, 51 ... Main board, 6 ... Roll paper holder , 7 ... Area, 71 ... Sub-board, 72 ... Connector, 8 ... Autocutter, 9 ... Roll paper, 11 ... Platen roller, 12 ... Open / close door, 13 ... Print head.

Claims (8)

A roll paper storage unit for storing roll paper and
The first cover that can open the roll paper storage part and
An exterior case having a first surface, a second surface, and a third surface,
A first substrate provided between the second surface of the outer case and the roll paper storage portion, and
A second substrate provided between the third surface of the outer case and the roll paper storage portion is provided .
The first surface of the exterior case includes the surface of the first cover.
There is a second corner of the exterior case including the corner of the third surface at a position diagonal to the first corner of the exterior case including the corner of the second surface, and the corner of the third surface is present. A printing apparatus in which the second substrate is provided in a peripheral area corresponding to a portion . A platen roller provided on the first cover, which draws and conveys the recording paper from the roll paper, and
The printing apparatus according to claim 1, further comprising a thermal print head that prints on the recording paper facing the platen roller. The power connector provided on the first board and
The printing apparatus according to claim 1 or 2, further comprising a drawer kick connector provided on the second substrate. The printing apparatus according to any one of claims 1 to 3, wherein the first substrate includes at least one of a CPU, a memory, and an IC for controlling an interface. The printing device according to any one of claims 1 to 4, wherein the printing device can change the installation angle. The printing apparatus according to any one of claims 1 to 5, wherein the second surface and the third surface are surfaces connected to the first surface. The exterior case has a removable second cover.
The printing apparatus according to any one of claims 1 to 6, wherein the second surface or the third surface includes a surface of the second cover. The printing apparatus according to any one of claims 1 to 7, wherein the first surface is the front surface of the exterior case, and the second surface is the upper surface of the exterior case.

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