JP2012115995A - Recorder and power source device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder capable of restricting power consumption to a lower level by shifting to a state of low consumption of power, in which power consumption is restricted, and to provide a power source device.SOLUTION: A printer 1 to carry out recording on a recording medium comprises: a CPU 41; a DC/DC converter 31 configured to supply power to each of parts including the CPU 41; an FET 32 configured to switch between the supply of power from the DC/CD converter 31 to each of the parts including the CPU 41 and the stop of it; and a latch circuit 33 configured to shift to a state of low consumption of power by changing a gate operation voltage VG applied to the FET 32 by the control of the CPU 41, thereby stopping the supply of power to each of the parts including the CPU 41. In a case where an instruction from the external part of the printer 1 is detected, the supply of power from the DC/DC converter 31 is started by the reset of output from the control signal of the latch circuit 33, thereby resuming from the state of low consumption of power.

Description

  The present invention relates to a recording apparatus that performs recording on a recording medium, and a power supply apparatus that supplies power to the recording apparatus.

A recording device such as a printer that records on a recording medium turns off the power supply to components with high power consumption, such as a motor, in order to reduce standby power when the recording operation is not performed for a predetermined time or longer. It has a function of shifting to a power consumption state (so-called standby, sleep) (see, for example, Patent Document 1). In this low power consumption state, unlike the power-off state, the power supply can be resumed in a short time to return to the normal operation state.
For example, the printer described in Patent Document 1 includes a relay that turns on / off the supply of AC power to a drive power supply unit that drives a motor, a solenoid, and the like, and an engine controller that controls the relay, and shifts to a standby state. Then the relay is turned off by the engine controller. In this configuration, the engine controller communicates with an external computer even in the standby state, and when the operation command is received from the computer, the engine controller turns on the relay and returns to the normal operation state.

JP 2004-202692 A

In the low power consumption state of the conventional recording apparatus, control such as a controller operates even in the low power consumption state in order to perform control to return to the normal operation state. For this reason, the amount of power consumption during standby cannot be made smaller than the power consumption of the control device, which is the limit of power saving.
The present invention has been made in view of the above-described circumstances, and is intended to shift to a low power consumption state in which power consumption is suppressed, and a recording apparatus and a power source that can further reduce power consumption An object is to provide an apparatus.

In order to achieve the above object, the present invention provides a recording apparatus for recording on a recording medium, comprising: a control unit; a power supply unit that supplies power to each unit including the control unit; and Power supply switching means for switching supply and stop of power supply to each part including the control means, and control of the control means to output a control signal to the power supply switch means to stop power supply to each part including the control means The power supply stopping means for shifting to the low power consumption state, and when an instruction from the outside of the recording apparatus is detected, the output of the control signal of the power supply stopping means is reset and the power supply from the power supply means is started. And a return means for returning from the low power consumption state.
According to the present invention, the control unit shifts to a low power consumption state in which power supply to each unit including the control unit is stopped under the control of the control unit, and returns from the low power consumption state by giving an instruction from the outside of the recording apparatus. Since this low power consumption state also stops the control means, the power consumption is even smaller than the conventional sleep state in which the power supply to the motor or the like is stopped. The normal operation state can be easily restored by an instruction from the outside of the apparatus. Accordingly, it is possible to provide a recording apparatus that can shift to a low power consumption state that is different from the power-off state and can further reduce the power consumption in the low power consumption state.

In the recording apparatus, the power supply switching unit may supply power from the power supply unit to each unit including the control unit while a control signal input from the power supply stop unit is in a predetermined state. The power supply stopping means holds the control signal in a predetermined state according to the control of the control means, and switches the control signal to an initial state when reset by the return means. And
According to the present invention, it is possible to easily realize a recording apparatus capable of stopping the power supply to each unit including the control means and returning from the low power consumption state in which the power supply is stopped using a simple circuit configuration. .

According to the present invention, in the recording apparatus, a transport motor serving as a drive source for transporting the recording medium, a drive unit including a recording head that performs recording on the recording medium, Drive power supply means for stopping power supply to the drive section while maintaining power supply from the power supply means to each section including the control means.
According to the present invention, it is possible to stop power supply to the transport motor and the recording head while maintaining power supply to the control means. Since this state is a standby state in which the amount of power consumption is suppressed, which is different from the low power consumption state described above, it is possible to shift to two states in which the amount of power consumption is suppressed, unlike the power-off state. As a result, a recording apparatus capable of transitioning between a state in which power supply to the transport motor and the recording head is stopped while maintaining power supply to the control means, and a low power consumption state in which power supply to the control means is also stopped. This can be realized and the power consumption can be controlled more finely.

The present invention is also characterized in that the recording apparatus further comprises a mechanical switch for connecting and separating a power supply line for supplying power from an external power supply of the recording apparatus to the power supply means by a mechanical mechanism.
According to the present invention, it is possible to stop the power supply to each part including the control means without cutting off the power supply by the mechanical switch, and to suppress the power consumption as the power supply is almost turned off. Since the mechanical switch cannot be turned on and off in software by the control means, the recording apparatus provided with the mechanical switch has a limit in suppressing power consumption, but by shifting to the above low power consumption state, the control of the control means Power consumption can be reduced promptly and significantly.

In the recording apparatus, the return means may be an open / close detection means for detecting opening / closing of a cover that covers the recording medium or the recording mechanism provided in the recording apparatus, or an input operation from outside the recording apparatus. And a reset signal is output to the power supply stopping means upon detection.
According to the present invention, the recording apparatus is recovered from the low power consumption state by opening / closing the cover of the recording apparatus or operating the operation switch. Therefore, it is possible to easily return from the low power consumption state in which the power supply to the control unit is also stopped. .

Further, in the recording apparatus according to the present invention, the return unit includes a signal detection unit that detects a signal transmitted from another device externally connected to the recording device, and is reset to the power supply stopping unit upon detection. A signal is output.
According to the present invention, by transmitting a signal from a device externally connected to the recording device, it is possible to easily return from the low power consumption state in which the power supply to the control unit is also stopped.

In order to solve the above-described problem, the present invention provides a power supply device included in a recording apparatus that performs recording on a recording medium, the power supply unit supplying power to each unit including a control unit included in the recording device, Power supply switching means for switching supply and stop of power supply to each part including the control means from the power supply means, and control of the control means to output a control signal to the power supply switching means to each part including the control means Power supply stopping means for stopping power supply and shifting to a low power consumption state, and the power supply stopping means is connected to a return means for outputting a reset signal when an instruction from the outside of the recording apparatus is detected. When the reset signal is input from the return means, the output of the control signal is reset and the power supply from the power supply means is started to return from the low power consumption state. The features.
According to the present invention, the control of the control unit of the recording apparatus shifts to a low power consumption state in which power supply to each unit including the control unit is stopped, and the recording apparatus is reduced in response to an instruction from the outside of the recording apparatus. It is possible to recover from the power state. Since this low power consumption state also stops the control means, the power consumption is even smaller than the conventional sleep state in which the power supply to the motor or the like is stopped. The normal operation state can be easily restored by an instruction from the outside of the apparatus. Therefore, by using the power supply device of the present invention, it is possible to shift to a low power consumption state different from the power off state, and to provide a recording device capable of further reducing the power consumption amount in this low power consumption state. it can.

  According to the present invention, the power supply to each unit including the control unit is stopped and the power consumption amount is significantly reduced, so that the control unit can easily shift to the low power consumption state and the control unit does not operate. Easy recovery from power consumption. For this reason, it is possible to provide a recording apparatus that can shift to a low power consumption state different from the power-off state and can further reduce the power consumption in the low power consumption state.

1 is a block diagram illustrating a configuration of a printer according to an embodiment of the present invention. 6 is a timing chart of signals input / output by each unit of the printer.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a printer 1 according to an embodiment to which the present invention is applied.
The printer 1 is a recording device that records (prints) characters, images, and the like on a recording medium. In the present embodiment, when the printer 1 is a line thermal printer that heats a thermal roll paper (not shown) accommodated in a main body case (not shown) by a line thermal head and prints characters, images, and the like. Will be described as an example.

The printer 1 includes a power supply device 3 and a recording unit 4 that operates by receiving power supply from the power supply device 3 and performs recording on roll paper.
The recording unit 4 includes a CPU 41 (control unit) that controls each unit of the printer 1 by executing a control program, a ROM 42 that stores data such as a control program executed by the CPU 41 and setting values, a control program executed by the CPU 41, and a processing target. A RAM 43 forming a work area for expanding the data, and an interface (I / F) unit 46 connected to a host computer 100 (another apparatus) outside the printer 1. In addition, the recording unit 4 serves as a driving unit 40 controlled by a control system including the CPU 41, a conveyance motor 44 that conveys roll paper according to the control of the CPU 41, and colored dots on the roll paper conveyed by the conveyance motor 44. A recording head 45 is provided for recording characters and images. Each unit included in the recording unit 4 is connected to each other via a bus 47.
The CPU 41 reads out the control program and data stored in the ROM 42, develops them in the work area of the RAM 43 and executes them, thereby controlling each part of the printer 1. Further, the CPU 41 transmits / receives various data to / from the host computer 100 via the interface unit 46, and the transport motor 44 and the recording head of the driving unit 40 based on the print execution command and the print data transmitted from the host computer 100. 45 is controlled to execute printing.

  The transport motor 44 is connected to a transport roller that contacts the roll paper. When the transport motor rotates as the transport motor 44 rotates, the roll paper is transported toward the discharge port. The recording unit 4 may include a cutter unit (not shown) that cuts the roll paper printed by the recording head 45 near the discharge port, and a cutter drive motor that operates the cutter unit. In this case, the cutter drive motor moves the blade of the cutter unit at a predetermined timing under the control of the CPU 41 to cut the roll paper. In the configuration provided with this cutter drive motor, the drive unit 40 includes a cutter drive motor.

  The printer 1 includes a cover (not shown) that can be opened and closed on a main body (not shown) that accommodates roll paper, and the roll paper can be replenished and replaced by opening the cover. The printer 1 includes a cover opening / closing switch 51 that detects opening / closing of the cover and outputs an output voltage corresponding to the opening / closing state of the cover to the CPU 41. An operation panel (not shown) is provided on the upper surface or the front surface of the main body of the printer 1, and a panel switch 52 that outputs a predetermined voltage in response to a pressing operation is disposed. The panel switch 52 is, for example, a feed switch for instructing conveyance of roll paper other than during the printing operation. When the panel switch 52 is pressed, a signal of a predetermined voltage is input to the CPU 41.

The printer 1 is connected to an AC adapter 2 connected to a commercial AC power source P. The AC adapter 2 rectifies and converts the voltage of, for example, a commercial AC power supply P having an AC voltage of 100 volts, and supplies DC power of 24 volts to the power supply device 3. Based on the power supplied from the AC adapter 2, the power supply device 3 supplies power to each unit of the recording unit 4.
The power supply device 3 includes a DC / DC converter 31 (power supply means) that converts the voltage of 24 volt DC power supplied from the AC adapter 2 to generate and output, for example, 3.3 volt DC power. . The direct current power of 3.3 volts output from the DC / DC converter 31 is a power source for mainly operating a device mounted on the control board.

  Each part of the recording unit 4 is connected to the output stage of the DC / DC converter 31 via an FET (Field Effect Transistor) 32, and the CPU 41, ROM 42, RAM 43, interface unit 46 and other parts are connected via the FET 32. Is supplied with 3.3 VDC power. More specifically, the output stage of the DC / DC converter 31 is connected to the source of the FET 32, while each part of the recording unit 4 is connected to the drain of the FET 32, and a gate voltage higher than the threshold is applied to the gate of the FET 32. Then, 3.3 volt DC power is supplied to each part of the recording unit 4. 1 shows a power supply line from the FET 32 to the CPU 41, a power supply line (not shown) from the FET 32 is also connected to the ROM 42, the RAM 43, and the interface unit 46.

  The power supply device 3 includes a latch circuit 33 that applies a gate voltage to the FET 32 (power supply switching means). The latch circuit 33 outputs a gate operating voltage VG (control signal) in the same state as the control voltage SO input from the CPU 41 to the gate of the FET 32. For example, while the control voltage SO output from the CPU 41 to the latch circuit 33 is at a high level, the latch circuit 33 outputs a high-level gate operation voltage VG. For this reason, the FET 32 is turned on and power is supplied to the recording unit 4 while the CPU 41 maintains the control voltage SO at a high level. When the CPU 41 switches the control voltage SO to a low level, the gate operating voltage VG output from the latch circuit 33 is switched to a low level in conjunction with this, so that the FET 32 is turned off and recording is performed from the DC / DC converter 31. The power supply to the unit 4 is stopped.

  Further, the DC power generated by the DC / DC converter 31 is supplied to the latch circuit 33 (power supply stopping means), and the latch circuit 33 latches the control voltage SO by this DC power. That is, when the control voltage SO is switched to the low level, the latch circuit 33 latches the control voltage SO at this time, and even if the control voltage SO is subsequently switched to the high level, the latch circuit 33 sets the gate operating voltage VG to the low level. Keep on. For this reason, once the CPU 41 outputs the low level control voltage SO, the gate operating voltage VG is maintained at the low level, so that the state where the power supply from the DC / DC converter 31 to the recording unit 4 is stopped is maintained. .

A cancel signal SC (reset signal) for canceling the latch state of the control voltage SO is input to the latch circuit 33 from the cover open / close switch 51 (return means, open / close detection means) and the panel switch 52 (return means, operation switch). Is done.
The cover opening / closing switch 51 is constituted by, for example, a mechanical switch having a mechanical mechanism that is interlocked with opening / closing of the cover, and is turned off when the cover is closed and turned on when the cover is opened. The panel switch 52 is a switch that is turned on and conducts only while being pressed. A DC voltage generated by the DC / DC converter 31 is applied to the cover opening / closing switch 51 and the panel switch 52. While these switches are off, the applied voltage from the DC / DC converter 31 is used as a cancel signal SC. It is output to the latch circuit 33. When these switches are turned on, the output line is connected to the ground inside the switch and the output voltage is lowered. For this reason, when the cover is opened or the panel switch 52 is pressed, the voltage of the cancel signal SC input to the latch circuit 33 is lowered. When the voltage of the cancel signal SC becomes lower than the threshold value, the latch circuit 33 releases the latch of the control voltage SO and switches the gate operating voltage VG to the high level. As described above, when the power supply from the DC / DC converter 31 to the recording unit 4 is stopped, the cover is opened and the cover opening / closing switch 51 is turned on, or the panel switch 52 is pressed, the DC / DC The power supply from the converter 31 to the recording unit 4 is resumed.

The power supply device 3 includes a drive power supply unit 34 (drive power supply means) that supplies 24 V DC power supplied from the AC adapter 2 to the DC / DC converter 31 to the drive unit 40. A power supply line is connected to each part of the drive unit 40 from the drive power supply unit 34, but the illustration is omitted here.
Since devices such as the conveyance motor 44 and the recording head 45 included in the drive unit 40 require higher voltage power than devices mounted on the substrate, the power output by the AC adapter 2 is output to each of these units. Is supplied. The drive power supply unit 34 turns on / off the power supply from the AC adapter 2 to the drive unit 40 according to the control of the CPU 41. Since the conveyance motor 44 and the recording head 45 have a large amount of power consumption, the standby power consumption is large when the transport motor 44 and the recording head 45 are not in operation, and the standby power consumption can be suppressed by turning off the power supply to these units.

  Further, the printer 1 includes a power switch 35 that is manually operated by an operator on a power supply line from the AC adapter 2 to the power supply device 3. The power switch 35 is a mechanical switch having a mechanical mechanism that switches between a conductive state and an open state of a contact, and specifically, a toggle switch, a slide switch, a lever switch, a rocker switch, a rotary switch, and the like.

The printer 1 configured as described above can switch the power supply state to the following four stages.
(1) Normal operation state in which power is supplied to each of the CPU 41, ROM 42, RAM 43, interface unit 46, and drive unit 40 of the printer 1.
(2) A sleep state in which power supply to the drive unit 40 is stopped in a normal operation state.
(3) A deep power saving state in which power supply to the CPU 41, the ROM 42, the RAM 43, and the interface unit 46 of the printer 1 is stopped in the sleep state.
(4) A stopped state in which the power supply from the AC adapter 2 to the power supply 3 is stopped.

In the normal operation state (1), the FET 32, the drive power supply unit 34, and the power switch 35 are all on (power supply state). In the sleep state (2), the FET 32 and the power switch 35 are on, and control by the CPU 41 and communication with the host computer 100 via the interface unit 46 are possible. On the other hand, the drive power supply unit 34 is turned off, and no power is supplied to each unit of the drive unit 40, so that standby power consumption is suppressed.
In the deep power saving state (3), the drive power supply unit 34 is turned off, the FET 32 is also turned off, and the CPU 41, ROM 42, RAM 43, and interface unit 46 are also stopped. For this reason, control by CPU41 cannot be performed. In the deep power saving state (3), only the DC / DC converter 31 and the latch circuit 33 in the printer 1 consume power. In addition, although the DC voltage is applied to the cover opening / closing switch 51 and the panel switch 52, the power consumption in these switches can be almost ignored. Accordingly, the power consumption in the deep power saving state (3) is lower than that in the sleep state (2) and is almost close to the stopped state (4). The printer 1 can shift to the deep power saving state (3) with a very small amount of power consumption as in the stopped state (4) without turning off the power switch 35 which is a mechanical switch.

The transition of the power supply state of the printer 1 is performed as follows, for example.
The CPU 41 waits for reception of a print job from the host computer 100 in the normal operation state, and counts a time during which the print job is not received by a built-in timer. When the count value reaches a predetermined value, the CPU 41 turns off the drive power supply unit 34 and shifts to the sleep state (2). When the reception of a print job or the operation of the panel switch 52 of the operation panel is detected in the sleep state (2), the CPU 41 turns on the drive power supply unit 34 to start the power supply to the drive unit 40, and the normal operation state Return to.
Further, the CPU 41 counts the time since the transition to the sleep state (2), and transitions to the deep power saving state (3) when the count value reaches a value set in advance as the transition condition.
Thereafter, when the cover is opened or the panel switch 52 is operated in the deep power saving state (3), the FET 32 is turned on and the printer 1 returns to the normal operation state.

The operation of the printer 1 regarding the transition to the deep power saving state (3) and the return to the normal operation state (1) will be described in more detail with reference to the timing chart.
FIG. 2 is a timing chart of signals input / output by each unit of the printer 1. 2A shows the voltage VCC of the DC voltage supplied from the AC adapter 2 to the DC / DC converter 31, FIG. 2B shows the voltage VDD output from the DC / DC converter 31 to the FET 32, and FIG. ) Indicates the voltage VDDA supplied from the FET 32 to the recording unit 4. Further, in the figure, (d) shows the gate operating voltage VG applied to the gate of the FET 32 by the latch circuit 33, (e) shows the control voltage SO output from the CPU 41 to the latch circuit 33, and (f) shows the cover opening / closing switch. 51 and the cancel signal SC input from the panel switch 52 to the latch circuit 33.

  When the power of the printer 1 is turned on by operating the power switch 35 (time t1), the voltage VCC is supplied to the DC / DC converter 31 and the output voltage VDD of the DC / DC converter 31 rises. Further, since the voltage VDD is supplied to the cover opening / closing switch 51 and the panel switch 52, the voltage of the cancel signal SC also rises. With the rise of the voltage VDD, power is supplied to the latch circuit 33, and after the power is turned on (time t2), the output of the gate operating voltage VG is started from the latch circuit 33. Then, the FET 32 is turned on by the application of the gate operating voltage VG, the output voltage VDDA of the FET 32 rises, power supply to each part of the recording unit 4 is started, the CPU 41 starts outputting the control voltage SO, and the printer 1 Enters the normal operating state.

  Thereafter, the supply of power from the drive power supply unit 34 to the drive unit 40 is stopped under the control of the CPU 41 and the sleep state is entered. When the time further elapses, the CPU 41 enters the deep power saving state, and therefore the control voltage SO Is switched to the low level (time t3). Along with this, the gate operating voltage VG output from the latch circuit 33 falls to a low level, the FET 32 is turned off, the output of VDDA is stopped, and the power supply to the CPU 41 is stopped. Thereafter, since the CPU 41 stops operating, the output of the control voltage SO becomes indefinite, but the latch circuit 33 latches the low level control voltage SO, and the gate operating voltage VG is kept at the low level.

  When the panel switch 52 is turned on by the operation of the panel switch 52, or when the cover (not shown) of the printer 1 is opened and the cover opening / closing switch 51 is turned on, the cancel signal SC is lowered (time t4). As a result, the latch of the latch circuit 33 is canceled, the gate operating voltage VG is switched to the high level, and the output voltage VDDA of the FET 32 rises with a slight delay. As a result, the output of the control voltage SO from the CPU 41 is resumed, the power is continuously supplied from the FET 32 to the recording unit 4 of the printer 1, and the printer 1 returns to the normal operation state.

  In the printer 1, as shown in FIG. 1, when the interface unit 46 (return means, signal detection means) receives a command from the host computer 100, the control voltage SO may be output to the latch circuit 33. . In this case, the interface unit 46 is supplied with power from the DC / DC converter 31 even in the deep power saving state. In this way, in the deep power saving state of the printer 1, when the cover opening / closing switch 51 detects that the cover has been opened, when the panel switch 52 is operated, or the command transmitted from the host computer 100 Triggered by any event when the interface unit 46 detects this, the deep power saving state can be returned to the normal operation state.

  As described above, the printer 1 according to the embodiment to which the present invention is applied is a printer 1 that performs recording on roll paper as a recording medium, and includes a CPU 41 that controls the operation of the printer 1 and each unit including the CPU 41 ( CPU 41, ROM 42, RAM 43, interface unit 46), a DC / DC converter 31 that supplies power, FET 32 that functions as a switch for switching power supply to and stopping from each unit from DC / DC converter 31, and control of CPU 41 By changing the gate operating voltage VG applied to the gate of the FET 32, stopping the power supply from the FET 32 to each part and shifting to the low power consumption state, and outputting the cancel signal SC to the latch circuit 33 Reset the output of the gate operating voltage VG to And means for returning from the low power consumption state to start power supply to each unit from Barter 31. Specifically, the cover opening / closing switch 51 for detecting that the cover is opened, the panel switch 52 for detecting an operation by the operator, and the interface unit 46 for detecting a command transmitted from the host computer 100 are canceled upon detection. The signal SC is output to the latch circuit 33 to cancel the latch of the latch circuit 33. As a result, under the control of the CPU 41, when a transition is made to a deep power saving state in which the power supply to each part including the CPU 41 is stopped and an instruction is given by opening the cover or operating the panel switch 52 from the outside of the printer 1, Return from power state. Since the CPU 41 is also stopped in the deep power saving state, the power consumption is further smaller than in the conventional sleep state in which the power supply to the motor or the like is stopped, and the power consumption is lower as the power is almost turned off. It is possible to easily return to the normal operation state by an instruction from the outside. Accordingly, it is possible to provide the printer 1 that can shift to a low power consumption state different from the power-off state and can further reduce the power consumption amount in the low power consumption state.

  Further, the FET 32 is used as a switch for stopping the power supply from the DC / DC converter 31 to each part such as the CPU 41, and the gate operating voltage VG output from the latch circuit 33 is switched to the FET 32, thereby changing the conduction state of the FET 32. Since the configuration is changed, the printer 1 that can shift to the deep power saving state in which the power supply to the CPU 41 is stopped and can quickly return from the deep power saving state can be easily realized by using a simple circuit configuration. it can.

  Further, in accordance with the control of the CPU 41 and the driving unit 40 including the transport motor 44 and the recording head 45, the driving for stopping the power supply to the driving unit 40 while maintaining the power supply from the DC / DC converter 31 to each unit including the CPU 41. A power supply unit 34 is provided, and a sleep state can be entered in which power supply to the transport motor and the recording head is stopped while power supply to the CPU 41 is maintained. For this reason, unlike power-off, it is possible to shift to two states with reduced power consumption, so that power consumption can be controlled more finely.

  In addition, the printer 1 includes a power switch 35 including a mechanical switch that connects and separates a power supply line for supplying power from an external power source of the printer 1 to the DC / DC converter 31 by a mechanical mechanism. Even if the power supply is not cut off by the power supply 35, the power supply to each unit including the CPU 41 is stopped, and the power consumption can be suppressed as the power supply is almost turned off. Since the power switch 35 cannot be turned on / off by software by the CPU 41, the printer 1 having the power switch 35 has a limit in suppressing power consumption. However, by shifting to the low power consumption state, the control of the CPU 41 allows Power consumption can be reduced promptly and significantly.

  Although one embodiment of the present invention has been described above, the present invention is not limited to this. For example, in the above embodiment, the configuration in which the cancel signal SC is input from the cover opening / closing switch 51, the panel switch 52, and the interface unit 46 to the latch circuit 33 has been described as an example. However, the present invention is not limited to this. If the printer 1 is configured with an interface that accepts an operator's operation or an instruction from another external device, the cancel signal SC may be input to the latch circuit 33 from this interface. In the above embodiment, a thermal printer that performs recording by applying heat to the thermal roll paper by the recording head 45 has been described as an example, but the present invention is not limited to this, and a thermal sublimation printer, The present invention may be applied to an ink jet printer and a dot impact printer. In this case, the print head may be mounted on the carriage, and the carriage may be scanned perpendicular to the recording medium conveyance direction. In this case, the carriage drive motor is included in the drive unit 40. In addition, as the recording medium, roll paper in which plain paper is wound in a roll shape, cut paper of various standard sizes, fanfold paper in which continuous paper is folded can be used, and the recording medium is accommodated inside the main body. In the case of the configuration, the opening / closing of the cover of the storage portion of the recording medium may be detected by the cover opening / closing switch 51. When the recording medium is not accommodated inside the main body, the cover opening / closing switch 51 may detect the opening / closing of the cover that covers the recording mechanism including each part of the drive unit 40. Furthermore, the present invention is also applicable to various printers incorporated in other devices. The program executed by the CPU 41 that performs the above-described operation is not limited to the ROM 42 provided in the printer 1 but may be stored in another storage device, a storage medium, or a storage medium of an external device, and read and executed by the CPU 41. .

  DESCRIPTION OF SYMBOLS 1 ... Printer (recording device), 2 ... AC adapter, 3 ... Power supply device, 4 ... Recording part, 31 ... DC converter (power supply means), 32 ... FET (power supply switching means), 33 ... Latch circuit (power supply stop means) , 34... Drive power supply section (drive power supply means), 35. Power switch, 40... Drive section, 41... CPU (control means), 44. , Signal detection means), 51 ... cover opening / closing switch (return means, opening / closing detection means), 52 ... panel switch (return means, operation switch), 100 ... host computer (other devices), VG ... gate operating voltage (control signal) ), SC: Cancel signal (reset signal).

Claims (7)

A recording device for recording on a recording medium,
Control means;
Power supply means for supplying power to each part including the control means;
Power supply switching means for switching between supply and stop of power supply from the power supply means to each part including the control means,
Under the control of the control means, a power supply stopping means for outputting a control signal to the power supply switching means to stop power supply to each part including the control means, and to shift to a low power consumption state,
When detecting an instruction from the outside of the recording apparatus, resetting the output of the control signal of the power supply stopping unit to start power supply from the power supply unit, and to return from a low power consumption state,
A recording apparatus comprising: The power supply switching means includes a switch for stopping power supply from the power supply means to each part including the control means while a control signal input from the power supply stop means is in a predetermined state.
2. The recording according to claim 1, wherein the power supply stopping unit holds the control signal in a predetermined state according to the control of the control unit, and switches the control signal to an initial state when reset by the return unit. apparatus.   From the power supply unit to each unit including the control unit according to the control of the control unit, and a drive unit including a conveyance motor as a driving source for conveying the recording medium, a recording head for recording on the recording medium, and the control unit The recording apparatus according to claim 1, further comprising a drive power supply unit that stops power supply to the drive unit while maintaining the power supply.   4. The recording according to claim 1, further comprising a mechanical switch for connecting and separating a power supply line for supplying power from an external power supply of the recording apparatus to the power supply means by a mechanical mechanism. apparatus.   The return means includes an open / close detecting means for detecting opening / closing of a cover covering the recording medium or the recording mechanism provided in the recording apparatus, or an operation switch for detecting an input operation from outside the recording apparatus. The recording apparatus according to claim 1, wherein a reset signal is output to the power supply stopping unit.   The return means comprises signal detection means for detecting a signal transmitted from another apparatus externally connected to the recording apparatus, and outputs a reset signal to the power supply stopping means at the time of detection. The recording apparatus according to any one of 1 to 4. A power supply device provided in a recording apparatus for recording on a recording medium,
Power supply means for supplying power to each unit including control means provided in the recording apparatus;
Power supply switching means for switching between supply and stop of power supply from the power supply means to each part including the control means,
Under the control of the control means, a power supply stopping means for outputting a control signal to the power supply switching means to stop power supply to each part including the control means, and to shift to a low power consumption state,
The power supply stopping unit is connected to a return unit that outputs a reset signal when an instruction from the outside of the recording apparatus is detected, and resets the output of the control signal when the reset signal is input from the return unit. Starting power supply from the power supply means and returning from the low power consumption state,
A power supply characterized by.

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