Recording device and control method of the same, program and storage medium

Abstract

To provide a recording device that can properly notify a user of operation control, when performing the control using power supply from a USB bus power and electricity of a power storage device.SOLUTION: A recording device, which is driven by an external power source and a built-in power storage device that can be charged with electricity, comprises: a first obtaining part that obtains information concerning supplied electricity amounts from the external power source; a second obtaining part that obtains information concerning remaining electricity in the power storage device; a control part that makes the recording device execute predetermined operation, on the basis of the information obtained by the first obtaining part and the second obtaining part; and a notifying part that notifies a user of the information concerning the predetermined operation.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a recording device that performs recording using power from a USB bus power supply and a control method therefor.

Background Art

[0002] Conventionally, a printing device that operates only with power supplied from a USB (Universal Serial Bus) interface (hereinafter referred to as USB bus power) has been proposed.

[0003] Patent Document 1 discloses a printing device that receives power supply by USB bus power, determines whether printing is possible based on the supplied power information, and executes printing control according to the power information if printing is possible. Further, when it is determined that printing is impossible, it is disclosed that the user is notified that the power is insufficient by display on a display, emission of an LED, a buzzer sound, or the like.

[0004] According to the technique described in Patent Document 1, when printing is impossible with the power supplied by USB bus power, the user can grasp that state.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the technique described in the above Patent Document 1, it is determined whether operation is possible only with the power supply amount supplied from the USB bus power, and when printing is impossible, the user can be notified. However, there is a problem that when operation control is performed using not only the power supply amount from the bus power supply but also the remaining power of the power storage device, an appropriate operation notification to the user cannot be made.

[0007] The present invention has been made in view of the above-described problems, and an object thereof is to provide a recording apparatus capable of appropriately notifying a user when performing operation control using power supply from a USB bus power and power of a power storage device.

Means for Solving the Problems

[0008] The recording apparatus according to the present invention is a recording apparatus driven by an external power source and a built-in rechargeable power storage device, and includes a first acquisition unit that acquires information regarding the power supply amount from the external power source, and a second acquisition unit that acquires information regarding the remaining amount of the power storage device. Based on the information acquired by the first acquisition unit and the second acquisition unit, a control unit that causes the recording apparatus to execute a predetermined operation, and a notification unit that notifies the user of information regarding the predetermined operation.

Effects of the Invention

[0009] According to the present invention, it is possible to provide a recording apparatus capable of appropriately notifying a user when performing operation control using power supply from a USB bus power and power of a power storage device.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the invention according to the claims. Although a plurality of features are described in the embodiments, not all of these plurality of features are essential to the invention, and the plurality of features may be arbitrarily combined. Further, in the accompanying drawings, the same or similar configurations are denoted by the same reference numerals, and redundant descriptions are omitted.

[0012] (First Embodiment) FIG. 1 is a block diagram showing the configuration of the power supply system of the printer 101.

[0013] In FIG. 1, the printer 101 incorporates a rechargeable electric double layer capacitor (power storage device, hereinafter referred to as EDLC) 104 and can be driven by the voltage VBAT from the EDLC 104. Specifically, the printer 101 is driven by the power from the EDLC 104 being supplied to each part of the printer 101 at an appropriate voltage under the control of the ChargerIC 103.

[0014] The power supply voltage VBUS from the USB (Universal Serial Bus) terminal 102 charges the EDLC 104 by the ChargerIC 103. At the same time, the ChargerIC 103 outputs the voltage received from the EDLC 104 to the first DC-DC converter 106 for boosting. The first DC-DC converter 106 is a boosting circuit for boosting the voltage from the ChargerIC 103. The boosted voltage is used by the MotorDriver 108 to drive the motors of the reading mechanism and the printing mechanism of the printer 101. Also, the boosted voltage is used as the driving power supply for the printing head of the printer 101 by the HeadDriver 109 and bears the driving of a relatively large load.

[0015] The boosted voltage is further connected to the second DC-DC converter 107 for bucking, and the logic power supply voltage used in the ASIC (Application Specific Integrated Circuit) 110, the ROM (Read Only Memory) 112, and the DDR (Double Data Rate) memory 111 is generated. Here, the ASIC 110 is a custom IC including a CPU and peripheral circuits.

[0016] The ChargerIC 103 is an IC having functions for input current control of the USB terminal 102, charge control of the EDLC 104, and abnormal operation protection. The ChargerIC 103 communicates with the ASIC 110 connected by the Control serial Bus. The ChargerIC 103 (acquisition means) determines the input current according to the external device of the supply source. In the present embodiment, determination according to the USB-BC (USB Battery Charge) standard (hereinafter referred to as BC determination) and determination according to the USB-PD (USB Power Delivery) standard (hereinafter referred to as CC determination) are performed.

[0017] ASIC110, which has received the BC determination and CC determination results from ChargerIC103, determines the charging current threshold, full charge voltage threshold, and over-discharge voltage threshold of ChargerIC103, and sets the thresholds in ChargerIC103.

[0018] EDLC104 is an electric double layer capacitor, and charge control is performed under the control of ChargerIC103 according to the instructions of ASIC110. Also, EDLC104 supplies power to the first DC-DC converter 106, MotorDriver108, and HeadDriver109 with voltage VBAT. The voltage VBAT of EDLC104 can also be sent to ASIC110 via ChargerIC103. In addition, various information related to power supply can be transmitted from ChargerIC103 to ASIC110. These information can be used for various controls (control of predetermined operations) of the printer 101.

[0019] For example, during the printing operation of the printer 101, when the voltage VBAT of EDLC104 drops, ASIC110 stops the printing operation and instructs ChargerIC103 to perform charge control until the voltage VBAT of EDLC104 reaches a certain threshold. ASIC110, which has received that the voltage VBAT has reached a certain threshold, can control to resume the printing operation. Also, when the USB cable is unplugged or the power supply is stopped during the operation of receiving power from the USB terminal 102, etc., an operation to immediately respond to the power supply stop can be started by the notification from ChargerIC103 to ASIC110.

[0020] Figure 2 is a table showing the power supply amount for each connection standard. BC1.2 is based on the USB - BC (Battery Charge) standard. And as a method for determining the charging USB port (CDP: Charging Downstream Port), a method of electrically determining using the D+ and D - signal lines for USB data communication is defined. Also, in the case of a standard USB port that is not a charging port, after this detection is completed, communication based on the USB standard is performed, and within that, the discrimination of the USB version is possible.

[0021] On the other hand, in USB Type - C, the PowerDelivery standard is defined, and the power supply amount can be notified by communication via the CC pins. Note that in the PowerDelivery standard, the supply power voltage can also be controlled from 5V to 48V, but in Figure 2, the maximum power is described as the value when 5V is supplied.

[0022] Figure 3 is a diagram showing the relationship among the USB power supply amount, the voltage VBAT, and the operation mode. The content of this table may be held as table data in the program memory or may be implemented as program code.

[0023] Figure 3(a) is a table for determining the threshold value of the voltage VBAT according to the USB power supply amount. The setting criteria for the threshold value of the voltage VBAT are, for example, Threshold 1 is set to the voltage threshold at which the capping operation of the inkjet head is possible only with the remaining power of the EDLC104 even when the USB power supply stops. Threshold 2 is set to a value at which one operation of the job can be completed up to Threshold 1 when the power of the EDLC104 decreases in response to the printer 101 performing a job (copy operation, print operation) although the USB power supply amount is not sufficient to maintain the operation.

[0024] Figure 3(b) is a diagram showing the operation mode determined by the voltage VBAT and the USB power supply amount. Also, Figure 3(c) is a diagram showing the function limitations according to the operation mode.

[0025] The operation modes are set such that functional restrictions are imposed in each mode with reference to operation mode 4 which performs normal operations (all operations are possible). For example, in operation mode 1, printing and scanning operations cannot be executed, and only charging of the EDLC 104 is possible. In operation mode 2, the printing operation cannot be performed, and only the scanning operation is possible. In operation mode 3, the printing operation can be performed, but Wait control is inserted between printing operations, and the operation speed decreases.

[0026] FIG. 4 is a flowchart showing the processing contents at the time of starting the printer 101 in the present embodiment. This processing is realized by the ASIC 110 executing a control program stored in the ROM 112 or the like. Also, the same applies to the following flowcharts. Further, this processing is started when a USB connector is inserted into the printer 101.

[0027] First, in step S401, the ASIC 110 determines which standard the USB conforms to.

[0028] In step S402, the ASIC 110 sets the threshold value of the voltage VBAT according to the table shown in FIG. 3(a) based on the determination result of step S401.

[0029] In step S403, the ASIC 110 detects the value of the voltage VBAT via the ChargerIC 103.

[0030] In step S404, the ASIC 110 determines whether the voltage VBAT detected in step S403 is equal to or less than the threshold value 1 (threshold value or less). If the voltage VBAT is equal to or less than the threshold value 1, the ASIC 110 proceeds to step S405, and if it is greater than the threshold value 1, the ASIC 110 proceeds to step S408.

[0031] In step S405, the ASIC 110 notifies the user that the remaining power is insufficient and that charging will start.

[0032] In step S406, the ASIC 110 starts charging the EDLC 104.

[0033] When the charging is completed, in step S407, the ASIC 110 notifies the user that the charging of the EDLC 104 has been completed.

[0034] On the other hand, in step 408, the ASIC 110 sets the operation mode according to the table in FIG. 3(b) based on the determination result of the USB standard determined in step S401 and the voltage VBAT detected in step S403.

[0035] In step S409, the ASIC 110 determines whether there are functional limitations in the set operation mode. Based on the table shown in FIG. 3(c), if there are functional limitations, the ASIC 110 proceeds to step S410; otherwise, the operation of this flow ends.

[0036] In step S410, the ASIC 110 notifies the user of the content of the functional limitations.

[0037] Through such processing, the user can know whether the printer 101 is operable and whether there are functional limitations in the operation.

[0038] FIG. 5 is a flowchart showing the processing content from the start to the end of the job in this embodiment. This processing starts when the printer 101 receives a job from the user.

[0039] In step S501, the ASIC 110 determines whether only the threshold value 1 of the voltage VBAT is set. If only the threshold value 1 is set, the ASIC 110 proceeds to step S502; otherwise, the ASIC 110 proceeds to step S509.

[0040] In step S502, the ASIC 110 starts a printing or scanning job.

[0041] During the execution of the job, ASIC 110 constantly detects the voltage VBAT at step S503 and compares the voltage VBAT with threshold 1. If the voltage VBAT is greater than threshold 1, ASIC 110 proceeds to step S508 for processing. If it becomes equal to or less than threshold 1, ASIC 110 proceeds to step S504 for processing.

[0042] At step S508, ASIC 110 determines whether the job has been completed. If the job has been completed, ASIC 110 ends this flow. If not, ASIC 110 returns the processing to step S503 to continue the job. That is, if the voltage VBAT does not fall below threshold 1 during the execution of the job, the job can be completed.

[0043] On the other hand, at step S504, ASIC 110 stops the operation of the printer 101 and sets the operation mode to operation mode 1.

[0044] At step S505, ASIC 110 notifies the user that the remaining power is insufficient and that charging is to be started.

[0045] At step S506, ASIC 110 starts charging the EDLC 104.

[0046] When the charging is completed, at step S507, ASIC 110 notifies the user that the charging of the EDLC 104 has been completed. Then, it returns to step S503 to resume the job.

[0047] At step S501, if the threshold value of the voltage VBAT is set to other than threshold 1, ASIC 110 proceeds to step S509 to start a printing or scanning job. Here, in this embodiment, it is assumed that threshold 2 is set in addition to threshold 1.

[0048] During the execution of the job, ASIC 110 constantly detects the voltage VBAT in step S510 and compares the voltage VBAT with the threshold value 2. If the voltage VBAT is equal to or greater than the threshold value 2 (threshold value or higher), ASIC 110 proceeds to step S520. If the voltage VBAT is less than the threshold value 2, ASIC 110 proceeds to step S511.

[0049] In step S520, ASIC 110 determines whether the job has been completed. If the job has been completed, ASIC 110 ends this flow. If the job has not been completed, ASIC 110 returns the process to step S510 and continues the job. That is, if the voltage VBAT does not fall below the threshold value 2 during the execution of the job, the job can be completed.

[0050] On the other hand, in step S511, ASIC 110 stops the operation of the printer 101 and resets the operation mode based on the table in FIG. 3(b).

[0051] In step S512, ASIC 110 notifies the user that the function is restricted. For example, when the operation mode is set from operation mode 4 to operation mode 3, ASIC 110 notifies the user that the printing time will be slower.

[0052] In step S513, ASIC 110 resumes the printing or scanning job.

[0053] During the execution of the job, ASIC 110 constantly detects the voltage VBAT in step S514 and compares the voltage VBAT with the threshold value 1. If the voltage VBAT is greater than the threshold value 1, ASIC 110 proceeds to step S519. If the voltage VBAT is less than or equal to the threshold value 1, ASIC 110 proceeds to step S515.

[0054] In step S519, ASIC 110 determines whether the job has been completed. If the job has been completed, ASIC 110 ends this flow. If the job has not been completed, ASIC 110 returns the process to step S514 and continues the job. That is, if the voltage VBAT does not fall below the threshold value 1 during the execution of the job, the job can be completed.

[0055] On the other hand, in step S515, the ASIC 110 stops the operation of the printer 101 and sets the operation mode to operation mode 1.

[0056] In step S516, the ASIC 110 notifies the user that the remaining power is insufficient and that charging is to be started.

[0057] In step S517, the ASIC 110 starts charging the EDLC 104.

[0058] When the charging is completed, in step S518, the ASIC 110 notifies the user that the charging of the EDLC 104 is completed. Then, it returns to step S510 and resumes the job.

[0059] FIG. 6 is a diagram showing the relationship between the elapsed time, the voltage change of the EDLC 104, and the notification timing in a series of processes from startup to job completion. In this example, it is assumed that the EDLC 104 is not charged and the connector of the USB TYPE-C standard (1.5 A power supply) is connected.

[0060] First, when the USB connector is inserted and USB power supply is started, the printer 101 enters the standby state, and notifies the user by notification 606 that the remaining amount of the EDLC 104 is insufficient, that charging is to be started, and that the printing speed may become slow. After that, when the charging of the EDLC 104 progresses to full charge, the operation mode of the printer 101 is changed to operation mode 4. Then, it notifies the user by notification 607 that the job can be accepted and starts accepting the job. This is section 614.

[0061] Next, when the job is started, the voltage of the EDLC 104 gradually decreases. When the voltage VBAT of the EDLC 104 reaches the threshold value 2 before the job is completed, it notifies the user by notification 608 that a function limit is imposed and changes the operation mode to operation mode 3. This is section 615.

[0062] After changing the operation mode to operation mode 3, resume the job. If the voltage VBAT of the EDLC 104 reaches the threshold 1 before the job is completed, the printer stops operating and changes the operation mode to operation mode 1. Then, through notification 609, notify the user of insufficient power remaining and the start of charging, and start charging the EDLC 104. This is section 616 up to here.

[0063] After that, charging progresses. When the charging is completed, the printer 101 changes the operation mode to operation mode 4, notifies the user to resume the job through notification 610, and resumes the job. This is section 617 up to here.

[0064] When the job is completed, notify the user that the job is completed through notification 611. This is section 618 up to here.

[0065] FIG. 7 is a diagram showing an example of a notification screen displayed to the user when the function is restricted.

[0066] FIG. 7(a) shows an example of a notification screen displayed when the remaining amount of the EDLC 104 at startup is insufficient.

[0067] The following information is notified on the charging insufficient screen 700. The error message 701 indicates that the charging amount of the EDLC 104 is insufficient. The operation message 702 notifies that charging is necessary (charging in progress) because the charging amount is insufficient. Pressing the continue button 703 performs the charging operation.

[0068] FIG. 7(b) shows an example of a notification screen displayed when the power supply amount at startup is insufficient.

[0069] On the power supply insufficient screen 704, the following information is notified. The error message 705 indicates that the USB power supply is insufficient. The operation message 706 notifies that since the power supply is insufficient, it is necessary to reduce the operation execution speed. The instruction message 707 prompts to connect to an external power supply with a larger USB power supply. In the instruction message 707, the recommended external power supply may be made known by reading the displayed QR code (registered trademark) or checking the manual. Also, it may be possible to prompt connection with USB-BC and USB-PD with a large power supply. When the continue button 708 is pressed, an operation is performed.

[0070] Figure 7(c) shows an example of a notification screen displayed when the remaining amount of the EDLC 104 during operation becomes insufficient.

[0071] On the charge insufficient screen 709, the following information is notified. The error message 710 indicates that the charge of the EDLC 104 is insufficient. The operation message 711 notifies that since the charge is insufficient, it is necessary to reduce the operation execution speed. The instruction message 712 prompts to connect to an external power supply with a larger USB power supply.

[0072] In addition, in the cases of Fig. 7(b) and Fig. 7(c), considering cases such as reconnecting the external power supply, in addition to the above display, a cancel button for canceling the job may be displayed.

[0073] By controlling as described above, the user can grasp that the power supply is insufficient, the charge is insufficient, and the operation speed becomes slow, and can further grasp that it is necessary to connect to an external device with a larger power supply.

[0074] (Second Embodiment) In this second embodiment, an example will be described in which the user is notified only when a function limit is applied by comparing operation modes.

[0075] FIG. 8 is a flowchart showing a process of comparing with the job operation mode executed last time at the time of job reception. This process starts when the printer 101 receives a job from the user.

[0076] First, in step S801, the ASIC 110 determines which standard the USB conforms to.

[0077] In step S802, the ASIC 110 sets the threshold value of the voltage VBAT according to the table shown in FIG. 3(a) based on the determination result in step S801.

[0078] In step S803, the ASIC 110 detects the value of the voltage VBAT via the ChargerIC 103.

[0079] In step S804, the ASIC 110 sets the operation mode according to the table in FIG. 3(b) from the determination result in step S801 and the voltage VBAT detected in step S803.

[0080] In step S805, the ASIC 110 determines whether the operation mode set in step S804 is an operation mode with functional limitations. If the ASIC 110 is in an operation mode without functional limitations, the process proceeds to step S809, and if there are functional limitations, the process proceeds to step S806.

[0081] In step S809, since the ASIC 110 is in an operation mode without functional limitations, it starts the job without notifying the user.

[0082] On the other hand, in step S806, the ASIC 110 reads the operation mode at the time of the previous job execution.

[0083] In step S807, the ASIC 110 compares the operation mode set in step S804 with the operation mode read in step S806. If a functional limitation is added from the previous operation mode, the process proceeds to step S808, and if not, the process proceeds to step S809.

[0084] In step S808, the ASIC 110 notifies the user of the added function restrictions.

[0085] Through the above processing, the user can be notified of the function restrictions only when the function restrictions are added, and unnecessary notifications can be eliminated.

[0086] FIG. 9 is a diagram showing an example of a notification screen displayed to the user when function restrictions are added in the second embodiment.

[0087] The following information is notified on the function restriction notification screen 900. The error message 901 indicates that the USB power supply is insufficient. The operation message 902 notifies that since the power supply from the connected external power source is less than that at the previous use, it is necessary to reduce the execution speed of the operation. The instruction message 903 notifies that if connected to an external power source with a larger USB power supply, it can be executed at the normal speed. When the continue button 904 is pressed, the operation is performed.

[0088] By controlling as described above, the user can grasp that the power supply is insufficient and the operation speed is slower than at the previous use, and can further grasp that it is necessary to connect to an external device with a larger power supply.

[0089] The disclosure of this specification includes the following recording device, its control method, program, and storage medium.

[0090] (Item 1) A recording device driven by an external power source and a built-in rechargeable power storage device, a first acquisition means for acquiring information regarding the power supply amount from the external power source, a second acquisition means for acquiring information regarding the remaining amount of the power storage device, control means for causing the recording device to execute a predetermined operation based on the information acquired by the first acquisition means and the second acquisition means, Notification means for notifying the user of information regarding the predetermined operation; A recording apparatus characterized by comprising the same.

[0091] (Item 2) The recording apparatus according to item 1, characterized in that the external power source is connected to the recording apparatus via a USB terminal.

[0092] (Item 3) The recording apparatus according to item 2, characterized in that the first acquisition means determines the standard of the USB terminal.

[0093] (Item 4) The recording apparatus according to item 3, characterized in that the first acquisition means acquires information regarding the power supply amount from the external power source based on the standard of the USB terminal.

[0094] (Item 5) The recording apparatus according to any one of items 1 to 4, characterized in that the second acquisition means acquires the voltage of the power storage device as information regarding the remaining amount of the power storage device.

[0095] (Item 6) The recording apparatus according to any one of items 1 to 5, characterized in that the control means sets a threshold value of the voltage of the power storage device based on the information acquired by the first acquisition means.

[0096] (Item 7) The recording apparatus according to item 6, characterized in that when the voltage of the power storage device is equal to or lower than a first threshold value as the threshold value, the control means causes the recording apparatus to perform only the charging operation of the power storage device.

[0097] (Item 8) The recording apparatus according to item 7, characterized in that when the voltage of the power storage device is smaller than a second threshold value larger than the first threshold value, the control means causes the recording apparatus to operate at a reduced speed.

[0098] (Item 9) The recording device according to item 8, wherein the notification means notifies the user that the recording device operates at a reduced speed when the recording device operates at a reduced speed.

[0099] (Item 10) The recording device according to item 8, wherein the control means causes the recording device to operate without functional limitation when the voltage of the power storage device is equal to or higher than the second threshold value.

[0100] (Item 11) The recording device according to any one of items 1 to 10, wherein the notification means notifies the user of information regarding the restricted operation when there is a restriction on the predetermined operation.

[0101] (Item 12) The recording device according to item 11, wherein the notification means notifies the user that the power storage device is being charged when only charging of the power storage device is possible as the predetermined operation.

[0102] (Item 13) The recording device according to any one of items 1 to 12, wherein the notification means gives a notification prompting the user to reconnect the recording device to an external power source with a larger power supply amount or a cable connecting to the external power source when there is a restriction on the predetermined operation.

[0103] (Item 14) The recording device according to any one of items 1 to 13, wherein the control means compares the information acquired by the first acquisition means and the second acquisition means with the information acquired by the first acquisition means and the second acquisition means last time, and when the restriction on the predetermined operation increases, the notification means notifies the user that the restriction has increased.

[0104] (Item 15) The recording apparatus according to item 14, wherein the notification means notifies the user to reconnect the recording apparatus to an external power source with a larger power supply amount or a cable connected to the external power source when the restrictions on the predetermined operation increase.

[0105] (Item 16) A method for controlling a recording apparatus driven by an external power source and a built-in rechargeable power storage device, comprising: a first acquisition step of acquiring information regarding the power supply amount from the external power source; a second acquisition step of acquiring information regarding the remaining amount of the power storage device; a control step of causing the recording apparatus to execute a predetermined operation based on the information acquired in the first acquisition step and the second acquisition step; a notification step of notifying the user of information regarding the predetermined operation; A method for controlling a recording apparatus, characterized by comprising the above steps.

[0106] (Item 17) A program for causing a computer to execute each step of the control method according to item 16.

[0107] (Item 18) A computer-readable storage medium storing a program for causing a computer to execute each step of the control method according to item 16.

[0108] (Other embodiments) The present invention can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and causing one or more processors in the computer of the system or apparatus to read and execute the program. It can also be realized by a circuit (for example, an ASIC) that realizes one or more functions.

[0109] The invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, claims are attached to disclose the scope of the invention.

Description of Symbols

[0110] 101: Printer, 102: USB terminal, 103: Charger IC, 104: Electric double layer capacitor, 106: First DC-DC converter, 107: Second DC-DC converter, 110: ASIC

Claims

1. A recording device driven by an external power source and a built-in rechargeable power storage device, a first acquisition means for acquiring information on the power supply amount from the external power source, a second acquisition means for acquiring information on the remaining amount of the power storage device, control means for causing the recording device to execute a predetermined operation based on the information acquired by the first acquisition means and the second acquisition means, notification means for notifying the user of information on the predetermined operation, A recording device characterized by comprising:

2. The recording device according to claim 1, wherein the external power source is connected to the recording device via a USB terminal.

3. The recording device according to claim 2, wherein the first acquisition means determines the standard of the USB terminal.

4. The recording device according to claim 3, wherein the first acquisition means acquires information on the power supply amount from the external power source based on the standard of the USB terminal.

5. The recording device according to claim 1, wherein the second acquisition means acquires the voltage of the power storage device as information on the remaining amount of the power storage device.

6. The recording device according to claim 1, wherein the control means sets a threshold value of the voltage of the power storage device based on the information acquired by the first acquisition means.

7. The recording device according to claim 6, wherein when the voltage of the power storage device is equal to or lower than a first threshold value as the threshold value, the control means causes the recording device to perform only the charging operation of the power storage device.

8. The recording device according to claim 7, wherein when the voltage of the power storage device is smaller than a second threshold value larger than the first threshold value, the control means causes the recording device to operate at a reduced speed.

9. The recording device according to claim 8, wherein when the recording device operates at a reduced speed, the notification means notifies the user that the recording device operates at a reduced speed.

10. The recording device according to claim 8, wherein when the voltage of the power storage device is equal to or higher than the second threshold value, the control means causes the recording device to perform an operation without functional limitation.

11. The recording device according to claim 1, wherein when there is a limitation on the predetermined operation, the notification means notifies the user of information on the limited operation.

12. The recording apparatus according to claim 11, wherein when the notification means can only charge the power storage device as the predetermined operation, the notification means notifies the user that the power storage device is being charged.

13. The recording apparatus according to claim 1, wherein when there is a limitation on the predetermined operation, the notification means gives a notification prompting the user to reconnect the recording apparatus to an external power source with a larger power supply or a cable connecting to the external power source.

14. The control means compares the information acquired by the first acquisition means and the second acquisition means with the information acquired by the first acquisition means and the second acquisition means last time, and when the limitation on the predetermined operation increases, the notification means notifies the user that the limitation has increased. The recording apparatus according to claim 1.

15. The recording apparatus according to claim 14, wherein when the limitation on the predetermined operation increases, the notification means gives a notification prompting the user to reconnect the recording apparatus to an external power source with a larger power supply or a cable connecting to the external power source.

16. A method for controlling a recording apparatus driven by an external power source and a built-in rechargeable power storage device, comprising: a first acquisition step of acquiring information on the power supply amount from the external power source; a second acquisition step of acquiring information on the remaining amount of the power storage device; a control step of causing the recording apparatus to execute a predetermined operation based on the information acquired in the first acquisition step and the second acquisition step; a notification step of notifying the user of information on the predetermined operation; The method for controlling a recording apparatus, characterized by comprising the above steps.

17. A program for causing a computer to execute each step of the control method according to claim 16.

18. A computer-readable storage medium storing a program for causing a computer to execute each step of the control method according to claim 16.

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