JP2004193733A - Method for establishing link between master unit and slave unit, printer, and handy terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly establish a link between a slave unit and a master unit. <P>SOLUTION: Ahead the establishing a link, a device address DA assigned to a radio communication means of the slave unit is notified, the notified device address DA assigned to the radio communication means of the slave unit is given to the master unit and stored therein, and thereafter, the link between the slave unit and the master unit having the radio communication means to which the device address DA is assigned is established. Since the master unit can directly call the desired slave unit without performing searching processing in this way in operation, the link between the slave unit and the master unit can quickly be established. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for establishing a link between a master device and a slave device, a printer used in pairs with a host device such as a handy terminal, and a handy terminal.
[0002]
[Prior art]
2. Description of the Related Art In recent years, portable printers with a small structure that can be attached to a belt or the like and are portable have been widely used, for example, for the convenience of a person in charge of collection and delivery of home delivery. In such a portable printer, necessary data transmitted from a host device such as a handy terminal is received and printed matter such as a label is issued. In this case, the portable printer and the host machine are connected by a wireless interface (for example, see Patent Document 1).
[0003]
By the way, it is not appropriate for this kind of portable printer to require a license for wireless communication one by one in view of its application, and therefore, it is usual to use a weak radio which does not require a license. In recent years, a wireless data communication specification called Bluetooth (registered trademark) has been standardized as a weak radio that does not require such a license. According to this Bluetooth, if the distance is within 10 m, communication is possible even when there is an obstacle (for example, an adjacent room) between the communication devices. In this regard, communication is not possible unless the ports of the devices face each other, and even if the position of the device is slightly displaced, communication is interrupted. IrDA (Infrared Data Association) using infrared rays is superior to this.
[0004]
Also, as a feature of Bluetooth, there is a piconet capable of broadcasting to a plurality of devices. A Bluetooth network is configured in such a way that the first device in the communication range functions as a “master” and then the device that has established a link to the master participates as a “slave”. The master has the right to determine the hopping pattern of the data transmission / reception frequency, and the slave transmits / receives data to / from another slave by establishing a link with the master. A network composed of Bluetooth devices is called a "piconet", and up to seven Bluetooth devices can participate.
[0005]
Therefore, according to such Bluetooth, one-to-n data communication is possible. Therefore, when one-to-one connection between devices is desired, a Bluetooth-compatible device located around the “master” device. Is searched, and a Bluetooth-compatible device to be connected is selected from the search results and is set as a “slave”.
[0006]
[Patent Document 1]
JP-A-10-084077
[0007]
[Problems to be solved by the invention]
However, when a Bluetooth device is mounted on a portable printer carried by a person in charge of home delivery and collection, there is a problem that must be solved for full-scale practical use.
[0008]
The courier collection / delivery staff selects a portable printer to carry from among a large number of portable printers. Then, for example, a host device such as a handy terminal functions as a “master”, and the selected portable printer functions as a “slave”. In this case, a procedure of searching for a portable printer that is a Bluetooth-compatible device around the handy terminal to be the “master”, selecting a portable printer to be connected from the search results, and setting it as the “slave” is adopted. However, since the search takes about 10 seconds, it is desired to reduce the search time. In addition, since a large number of portable printers that are Bluetooth-compatible devices are searched as a search result, it is not easy to find a portable printer actually obtained from a large number of portable printers.
[0009]
An object of the present invention is to quickly establish a link between a slave device and a master device.
[0010]
[Means for Solving the Problems]
The present invention relates to a method for establishing a link between a master device and a slave device each having a wireless communication unit for performing wireless communication by establishing a link with the slave device after specifying a slave device to be communicated. Prior to, an address notification step of notifying a device address assigned to the wireless communication means of the slave device, and a device address assigned to the wireless communication means of the slave device notified by the address notification step An address inputting step for inputting to the master device, an address storing step for storing the device address input in the address inputting step in the master device, and a device address of the slave device stored in the address storing step. , Including a link establishing step of establishing a link with the slave device and the master device having the wireless communication means chair addresses are assigned, the.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. The present embodiment is an example of application to a print system constructed by a handy terminal as a host machine and a portable printer as a printer.
[0012]
Here, FIG. 1 is a perspective view showing the configuration of the print system A. The print system A is constructed by the portable printer 1 and the handy terminal HT, and is used, for example, in the field of physical distribution of printing and issuing a label 5b (see FIG. 2).
[0013]
First, the portable printer 1 will be described. 2 is an external perspective view showing the portable printer 1 from the label discharging side, FIG. 3 is an external perspective view showing the portable printer 1 from the operator mounting side, and FIG. 4 is a horizontal sectional view showing the internal structure of the portable printer 1.
[0014]
As shown in FIGS. 2 to 4, the printer main body 1a of the portable printer 1 includes a case 2 having an open surface, and a cover 3 for opening and closing the open surface of the case 2. The cover 3 is rotatably supported by a fulcrum shaft 4 provided on the case 2. The case 2 is formed with a hopper 6 that rotatably accommodates a long recording paper 5 that is a printing medium and is wound in a roll shape with the cover 3 closed. In the present embodiment, as the recording paper 5, one in which a number of labels 5b are attached at equal intervals to a mount 5a is used, but other recording paper may be used.
[0015]
The case 2 is provided with a paper guide 7 extending from the bottom of the hopper 6 toward the cover 3. A portion of the paper guide 7 close to the cover 3 has a rotatable platen 8 and a rotatable platen 8. And a label releaser 9 along the longitudinal direction of the platen 8.
[0016]
As shown in FIG. 4, a head support 11 provided with a thermal head 12 is provided on the inner surface of the cover 3 (on the side of the hopper 6) so as to be rotatable about a support shaft 11a. The head support 11 is urged in one direction by a leaf spring 13, and the thermal head 12 contacts the platen 8 with the cover 3 closed. That is, the printing unit 14 is formed by the platen 8 and the thermal head 12.
[0017]
A pinch roller 16 pressed against the platen 8 by the urging force of a spring 15 is rotatably provided on both sides on the free end side of the cover 3. Further, the cover 3 is formed with a label discharge port 17 disposed between the thermal head 12 and the pinch roller 16 to discharge the label 5b, and a paper press 18 for pressing the recording paper 5 in the hopper 6 to float. ing. The case 2 is provided with a mount outlet 19 for discharging the mount 5a between the case 2 and the free end of the cover 3.
[0018]
On the upper surface of the case 2, there are provided a power switch 20 for declaring that power supply from the battery 10 (see FIG. 4) is to be cut off, a feed switch 21 for printing on the label 5b, a lid 22, and a light receiving window for receiving infrared rays. 23 are provided. Although details will be described later, the lid portion 22 opens and closes when the battery 10 is attached to and detached from the battery storage portion 30 (see FIG. 4) provided in the case 2. Further, locking claws 24 are slidably provided on both sides of the cover 3 (see FIG. 2). These locking claws 24 are urged outward and locked to the case 2, and when the cover 3 is opened, the locking claws 24 are slid inward as indicated by arrow marks to engage with the case 2. Release the stop state.
[0019]
In addition, an LED 56 is provided on the upper surface of the case 2. The portable printer 1 of the present embodiment can notify the operator of the operating state of the portable printer 1 by turning on or blinking the LED 56.
[0020]
Further, as shown in FIG. 3, an arc surface 25 is formed on one side of the printer main body 1a opposite to the cover 3 so as to be in close contact with the waist of the operator. On the other hand, a non-slip 26 for reducing slip and a belt hook 27 which is hooked on an operator's belt facing the non-slip 26 are formed.
[0021]
With such a configuration, when the battery 10 is correctly stored in the battery storage unit 30, the terminals of the battery storage unit 30 and the terminals of the battery 10 come into contact with each other and become electrically connected. The power is supplied from the power supply to each part such as the thermal head 12 which needs the power supply.
[0022]
Next, connection of the control system of each unit of the portable printer 1 will be described with reference to FIG. The portable printer 1 includes a CPU (Central Processing Unit) 41 for centrally controlling each unit. The CPU 41 has a ROM (Read Only Memory) 42 in which fixed data such as a program executed by the CPU 41 is written. A RAM (Random Access Memory) 43 for writing variable data such as work data in an updatable manner and a flash memory 44 for registering various information are connected via a bus line 45. A thermal head driver 46 for driving the thermal head 12, a motor driver 48 for driving a motor 47 to which the platen 8 is connected, a sensor circuit 50 to which various sensors 49 are connected, and a cover open for turning on and off by opening and closing the cover 3. A switch circuit 54 to which the switch 51, the power switch 20, the feed switch 21, and the interface switch 53 are connected, a lighting control circuit 57 to which an infrared interface 55a and a wireless interface 55b, and an LED 56 are connected are connected to the CPU 41. As described above, the circuit shown in FIG. 5 is formed on a substrate (not shown) provided inside the printer main body 1a. The infrared interface 55a is arranged inside the light receiving window 23 described above. The interface is described as I / F in the figure.
[0023]
Here, the wireless interface 55b, which is a wireless communication unit, will be described. The wireless interface 55b of the present embodiment is Bluetooth (registered trademark). According to this Bluetooth, if the distance is within 10 m, communication is possible even when there is an obstacle (for example, an adjacent room) between the communication devices. Also, as a feature of Bluetooth, there is a piconet capable of broadcasting to a plurality of devices. A Bluetooth network is configured in such a way that the first device in the communication range functions as a “master” and then the device that has established a link to the master participates as a “slave”. The master has the right to determine the hopping pattern of the data transmission / reception frequency, and the slave transmits / receives data to / from another slave by establishing a link with the master.
[0024]
The hopping pattern of the data transmission / reception frequency is calculated from a device-specific address and a clock value by a calculation formula defined by a protocol. The Bluetooth-equipped device is given an address called a 48-bit Bluetooth device address. Each Bluetooth-equipped device has a Bluetooth clock that outputs a 28-bit clock value every 312.5 μsec, which is half the length of a time slot. By inputting this device-specific Bluetooth device address and clock value and performing a prescribed calculation, a pseudo-random number sequence is generated, and a hopping pattern that does not overlap with other Bluetooth-equipped devices can be obtained.
[0025]
Therefore, when performing communication, the hopping pattern is calculated by using the master Bluetooth device address and the clock value, and the frequency is synchronized. That is, at the start of communication, the Bluetooth device address and the clock value of the master are transmitted to the slave to synchronize the hopping patterns, and the link between the master and the slave is established.
[0026]
In such a portable printer 1, the cover 3 is opened when the recording paper 5 is set, the recording paper 5 wound in a roll is stored in the hopper 6 of the printer main body 1a, and the cover 3 is opened. In this state, the leading end of the recording paper 5 is pulled out to a position covering the platen 8 and the label peeling body 9, and the cover 3 is closed. As a result, as shown in FIG. 4, the leading end of the backing sheet 5 a of the recording paper 5 is pressed against the platen 8 by the thermal head 12 and the pinch roller 16. The recording paper 5 is bent at an acute angle and is prevented from floating from the bottom surface of the hopper 6 by the paper presser 18. Although the printer main body 1a on which the recording paper 5 is set can be used by placing it on a desk, it is usually used while being attached to the waist of an operator. Then, the power switch 20 is turned on, and print data is input from the handy terminal HT (see FIG. 1) to perform printing.
[0027]
Next, the handy terminal HT will be described. FIG. 6 is an external perspective view showing the handy terminal HT, and FIG. 7 is an external perspective view showing the handy terminal HT turned upside down. As shown in FIG. 6 or 7, a liquid crystal display (LCD: Liquid Crystal Display) 72 and a keyboard 73 including function keys and numeric keys are provided in order on the upper surface of the main body case 71. Although not shown here, the keyboard 73 is also provided with a command transmission key to be described later. A bar code reading window 75 for reading a bar code with a built-in bar code reading device 74 (see FIG. 8) is formed at the front end of the lower surface of the main body case 71. Here, the barcode reading device 74 uses an LED (Light Emitting Diode) array as a light source, and receives and reads a barcode illuminated by the light source with a CCD (Charge Coupled Device). An infrared communication unit 77 having an infrared interface 76 for communicating various data with the portable printer 1 (not shown) is provided substantially in the center of the lower surface of the main body case 71. The infrared interface 76 includes an LED and a light receiving element, and has a surface on which a filter that receives only light emitted from the LED is attached. In addition, the handy terminal HT according to the present embodiment also includes a wireless interface 78 (see FIG. 8) as wireless communication means. This wireless interface 78 is Bluetooth. In addition, a drive switch 79 of the barcode reading device 74 is provided substantially at the center of the side edge of the main body case 71.
[0028]
Next, connection of the control system of each part of the handy terminal HT will be described with reference to FIG. The handy terminal HT includes a CPU 81 that centrally controls each unit. The CPU 81 includes a ROM 82 in which fixed data such as a program executed by the CPU 81 is written, and variable data such as work data that can be updated freely. The RAM 83 to which data is written is connected via a bus line 84. A display controller 85 for driving the liquid crystal display 72, a keyboard controller 86 for outputting a signal from the keyboard 73, a reading controller 87 for driving the bar code reader, and a switch circuit in which a drive switch 79 and an interface switch 88 are connected. 89, an infrared interface 76 and a wireless interface 78, which are connection means, respectively, are connected to the CPU 81.
[0029]
Next, characteristic functions of the print system A according to the present embodiment will be described in detail below. The description of the same processing as that performed conventionally is omitted. Here, a process for the CPU 41 of the portable printer 1 to execute the link establishment process in the Bluetooth network according to the control program stored in the ROM 42 and a handy process for establishing the link in the Bluetooth network realizing the characteristic functions of the print system A according to the present embodiment. The processing executed by the CPU 81 of the terminal HT according to the control program stored in the ROM 82 will be described.
[0030]
Note that the Bluetooth network according to the present embodiment is configured in such a manner that the handy terminal HT functions as a “master”, and thereafter, the portable printer 1 that has established a link to the handy terminal HT participates as a “slave”. .
[0031]
Here, FIG. 9 is a flowchart showing a flow of a self-diagnosis report print issuance process among the processes executed by the CPU 41 of the portable printer 1 according to the control program stored in the ROM 42. Prior to the establishment of a Bluetooth network link, when the portable printer 1 enters the self-diagnosis mode by operating the power switch 20 while pressing the feed switch 21 as shown in FIG. 9 (Y in step S1). Then, the thermal head 12 and the motor 47 are driven to print and issue a self-diagnosis report on the label 5b (step S2).
[0032]
Here, FIG. 10 is a plan view showing an example of the issued self-diagnosis report R. As shown in FIG. 10, the self-diagnosis report R is for notifying the user of the settings and status of the printer, and in the present embodiment, the Bluetooth device assigned to the wireless interface 55b of the portable printer 1 The address DA is also printed with a barcode BC and a character C which are converted into code symbols.
[0033]
Here, the Bluetooth device address DA assigned to the wireless interface 55b as the wireless communication means is printed and issued on the label 5b of the recording paper 5 as the print medium, thereby issuing the Bluetooth device assigned to the wireless interface 55b. The function of the address notifying means for notifying the address DA is executed.
[0034]
The Bluetooth device address DA of the portable printer 1 printed on the self-diagnosis report R thus issued is input to the handy terminal HT to establish a link to the handy terminal HT functioning as a “master”. Is the Bluetooth device address of the device that performs the That is, the portable printer 1 that has printed and issued the self-diagnosis report functions as a “slave” for the handy terminal HT that is the “master”.
[0035]
Here, FIG. 11 is a flowchart showing a flow of a link establishment process for establishing a link between the handy terminal HT and the portable printer 1 among processes executed by the CPU 81 of the handy terminal HT according to the control program stored in the ROM 82. As shown in FIG. 11, the handy terminal HT waits for the input of the Bluetooth device address DA of the portable printer 1 printed on the self-diagnosis report R (step S11). The Bluetooth device address DA is input by reading the barcode BC of the self-diagnosis report R by the barcode reader 74 or input by key operation of the keyboard 73 based on the character C of the self-diagnosis report R. It depends on either. Here, the function of the address input means is executed.
[0036]
When it is determined that the Bluetooth device address DA of the portable printer 1 has been input (Y in step S11), the input Bluetooth device address DA of the portable printer 1 is stored in the RAM 83 (step S12). Here, the function of the address storage means is executed.
[0037]
Then, the process proceeds to step S13 to establish a link between the handy terminal HT and the portable printer 1. More specifically, the Bluetooth device address and the clock value of the handy terminal HT are transmitted to the portable printer 1 based on the Bluetooth device address DA stored in the RAM 83, and the hopping pattern is synchronized so that the handy terminal HT and the portable printer 1 are synchronized. Establish a link with Here, the function of the link establishing means is executed.
[0038]
As described above, in the present embodiment, prior to link establishment, the Bluetooth device address DA assigned to the wireless interface 55b of the portable printer 1 as the slave device is notified without using the wireless interface 55b, and the notified portable device is notified. After inputting and storing the Bluetooth device address DA assigned to the wireless interface 55b of the printer 1 in the handy terminal HT, which is the master device, the wireless interface to which the Bluetooth device address DA is assigned based on the Bluetooth device address DA A link is established between the portable printer 1 as a slave device having the device 55b and the handy terminal HT as a master device. Thereby, in operation, the handy terminal HT as the master device can directly call the desired portable printer 1 without performing the search process, so that the portable printer 1 as the slave device and the handy terminal HT as the master device can be called. A link with the HT can be quickly established.
[0039]
Further, in the present embodiment, the Bluetooth device address DA is converted into a code symbol and printed on the label 5b of the recording paper 5 as a print medium and is issued, so that the Bluetooth device address DA is not erroneously input. A link between the portable printer 1 as a slave device and the handy terminal HT as a master device can be more quickly and reliably established.
[0040]
In the present embodiment, the self-diagnosis report R is printed and issued by the portable printer 1 prior to the establishment of the Bluetooth network link. However, the self-diagnosis report R is not issued every time the link is established. Alternatively, as shown in FIG. 12, the Bluetooth device address DA printed on the label 5b with the barcode BC and the character C may be attached to the portable printer 1. This saves the trouble of printing the self-diagnosis report R every time a link is established. In the case of the self-diagnosis report R, the Bluetooth device address DA assigned to the wireless interface 55b of the portable printer 1 is sequentially obtained, so that the wireless interface 55b of the portable printer 1 is replaced due to repair or the like. When the Bluetooth device address DA has changed, the self-diagnosis report R may be printed again and attached to the portable printer 1.
[0041]
Here, the Bluetooth device address DA assigned to the wireless interface 55b, which is a wireless communication unit, is attached to the printer main body 1a in a visible form so that the Bluetooth device address DA assigned to the wireless interface 55b is notified. Notification means is realized.
[0042]
In the present embodiment, the barcode BC is used as a code symbol of the Bluetooth device address DA. However, the present invention is not limited to this, and a two-dimensional code may be applied. Further, the character C may be used as the OCR code. However, in this case, it goes without saying that the code reading device of the handy terminal HT corresponds to reading of each code symbol.
[0043]
Next, a second embodiment of the present invention will be described with reference to FIG. The same parts as those described in the first embodiment of the present invention are denoted by the same reference numerals, and description thereof will be omitted. This embodiment is different from the above-described first embodiment in the method of acquiring the Bluetooth device address DA assigned to the wireless interface 55b of the portable printer 1 in the handy terminal HT.
[0044]
Here, FIG. 13 is a flowchart showing a processing flow in the handy terminal HT and a processing flow in the portable printer 1. As shown in FIG. 13, prior to the establishment of a Bluetooth network link, the handy terminal HT operates a command transmission key of the keyboard 73 to transmit the Bluetooth device address to the portable printer 1 via the infrared interface 76. An acquisition command is transmitted (step S21).
[0045]
When the portable printer 1 receives the Bluetooth device address acquisition command from the handy terminal HT (Y in step S31), the portable printer 1 is assigned to the wireless interface 55b of the portable printer 1 via the infrared interface 55a. The transmitted Bluetooth device address DA is transmitted (step S32).
[0046]
Here, the Bluetooth device address DA assigned to the wireless interface 55b as the wireless communication means is notified to the handy terminal HT as the host device using the infrared interface 55a as the communication means different from the wireless interface 55b. This implements an address notifying unit that notifies the Bluetooth device address DA assigned to the wireless interface 55b.
[0047]
Upon receiving the Bluetooth device address DA assigned to the wireless interface 55b of the portable printer 1 (Y in step S22), the handy terminal HT stores the received Bluetooth device address DA of the portable printer 1 in the RAM 83 (step S23). Here, the function of the address input means and the function of the address storage means are executed.
[0048]
Subsequently, a link between the handy terminal HT and the portable printer 1 is established (step S24, step S33). More specifically, based on the Bluetooth device address DA stored in the RAM 83, the Bluetooth device address and the clock value of the handy terminal HT are transmitted from the handy terminal HT to the portable printer 1, and the hopping pattern is synchronized to thereby synchronize the handy terminal HT. A link between the printer and the portable printer 1 is established. Here, the function of the link establishing means is executed.
[0049]
As described above, in the present embodiment, the Bluetooth device address DA assigned to the wireless interface 55b, which is a wireless communication unit, is transmitted to the handheld device, which is a host device, using the infrared interface 55a, which is a communication unit different from the wireless interface 55b. By notifying the terminal HT, the Bluetooth device address DA is not erroneously input, so that the link between the portable printer 1 as the slave device and the handy terminal HT as the master device can be more quickly and reliably established. Can be.
[0050]
In the present embodiment, a command for acquiring a Bluetooth device address and a Bluetooth device address are communicated using the infrared interface. However, the present invention is not limited to this, and any communication means other than Bluetooth may be used. Further, the present invention is not limited to wireless communication, but may be wired communication.
[0051]
In each of the embodiments, the portable printer 1 which is a Bluetooth-compatible device around the handy terminal HT serving as the “master” is searched, and the portable printer 1 to be connected is selected from the search results, and the “slave” is selected. The portable printer 1 responds to such a search (that is, an access from another device having Bluetooth to specify a device to be communicated). It may be set so as not to exist. As a result, it is possible to prevent a connection to a device other than the handy terminal HT to be originally connected. Further, since the portable printer 1 performs only the call monitoring without performing the search monitoring, as a result, the link between the handy terminal HT and the portable printer 1 is established after the call command is issued from the handy terminal HT. The time required for the operation can be shortened.
[0052]
【The invention's effect】
According to the present invention, since the master device can directly call a desired slave device without performing the search process, a link between the slave device and the master device can be quickly established.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a configuration of a print system according to a first embodiment of the present invention.
FIG. 2 is an external perspective view showing the portable printer from a label discharging side.
FIG. 3 is an external perspective view showing the portable printer as viewed from an operator mounting side.
FIG. 4 is a horizontal sectional view showing the internal structure of the portable printer.
FIG. 5 is a block diagram illustrating connection of control systems of various units of the portable printer.
FIG. 6 is an external perspective view showing a handy terminal.
FIG. 7 is an external perspective view showing the handy terminal turned upside down.
FIG. 8 is a block diagram showing connection of a control system of each unit of the handy terminal.
FIG. 9 is a flowchart illustrating a flow of a self-diagnosis report print issuing process of the portable printer.
FIG. 10 is a plan view showing an example of an issued self-diagnosis report.
FIG. 11 is a flowchart showing a flow of a link establishment process of the handy terminal.
FIG. 12 is an external perspective view showing a state in which a printed Bluetooth device address is attached to a portable printer.
FIG. 13 is a flowchart showing a processing flow in the handy terminal and a processing flow in the portable printer according to the second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Printer, slave apparatus, 5 ... Printing medium, 55a ... Communication means different from wireless communication means, 55b ... Wireless communication means, 78 ... Wireless communication means, HT ... Handy terminal, master equipment

Claims (6)

A method for establishing a link between a master device and a slave device each having a wireless communication unit that performs wireless communication by establishing a link with the slave device after specifying a slave device to be communicated,
Prior to link establishment, an address notification step of notifying a device address assigned to the wireless communication unit of the slave device,
An address inputting step of inputting, to the master device, a device address assigned to the wireless communication means of the slave device notified by the address notifying step,
An address storage step of storing the device address input by the address input step in the master device;
A link establishing step of establishing a link between the master device and the slave device having the wireless communication unit to which the device address is assigned, based on the device address of the slave device stored in the address storing step;
A method for establishing a link between a master device and a slave device. It has wireless communication means for establishing a link with the equipment after specifying the equipment to be communicated and performing wireless communication, receiving data transmitted from the host machine via the wireless communication means and printing it on a print medium. For printers that print and issue,
A printer comprising an address notifying unit for notifying a device address assigned to the wireless communication unit before establishing a link. 3. The printer according to claim 2, wherein the address notifying unit prints and issues the device address assigned to the wireless communication unit on the printing medium. 3. The device according to claim 2, wherein the address notifying unit notifies the host device of the device address assigned to the wireless communication unit using a communication unit different from the wireless communication unit. Printer. The printer according to any one of claims 2 to 4, wherein the printer does not respond to an access from another device including the wireless communication unit to specify a device to be communicated. A handy terminal that is a host machine for the printer according to any one of claims 2 to 5, further comprising a wireless communication unit that establishes a link with the device after the device to be communicated is identified and performs wireless communication.
Address input means for inputting a device address assigned to the wireless communication means of the printer notified by the address notifying means provided in the printer,
Address storage means for storing the device address input by the address input means,
Link establishment means for establishing a link with the printer having the wireless communication means to which the device address is assigned, based on the device address stored by the address storage means;
A handy terminal comprising:

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