JP4348523B2 - Electronics - Google Patents

Description

  The present invention relates to a constant voltage switching DC power supply circuit and an output voltage of the constant voltage switching DC power supply circuit by controlling a switching duty ratio of a primary side of the constant voltage switching DC power supply circuit based on an output voltage of the constant voltage switching DC power supply circuit. The present invention relates to an electronic device including a voltage control circuit for controlling the voltage and a load device connected to a secondary side of a constant voltage switching DC power supply circuit.

  In a general electronic device, for example, a recording device such as a facsimile or an ink jet recording device is used with the power on for a long time, but it can be started at any time from the operation time of the electronic device. Some electronic devices are used in situations where the waiting time is overwhelmingly longer. Such an electronic device is a power saving mode (so-called standby mode) in which the power consumption inside the electronic device is reduced from the normal operation mode that becomes the rated power consumption when the unused state continues for a certain period of time. It is common to transition to both hot standby and cold standby. Specifically, the power consumption of electronic devices can be reduced by shutting off the power supply to driving power sources such as motors with large power consumption and microcomputer control devices with microprocessors, or by reducing the brightness of liquid crystal displays. can do. Further, in an electronic device equipped with a constant voltage switching DC power supply circuit used as a power supply device for a general electronic device, the output voltage of the constant voltage switching DC power supply circuit is a constant low voltage (hereinafter referred to as a power saving voltage). ), The power consumption of the electronic device and the power consumption of the power supply device can be reduced (see, for example, Patent Document 1).

JP 2002-315329 A

  One means for controlling the output voltage of the constant voltage switching DC power supply circuit described above is to adjust the switching duty ratio on the primary side of the constant voltage switching DC power supply circuit. In the constant voltage switching DC power supply circuit, the output voltage on the secondary side increases as the ON duty on the primary side is increased, and the output voltage on the secondary side decreases as the ON duty is decreased. Therefore, a circuit for controlling the switching duty ratio of the primary side of the constant voltage switching DC power supply circuit is provided, and the length of the ON duty of the primary side is controlled so that the output voltage of the secondary side becomes the rated voltage or the power saving voltage. It ’s fine.

  However, when the operation mode of the electronic device is shifted to the power saving mode, the output voltage of the constant voltage switching DC power supply circuit is reduced to the power saving voltage, and at the same time, as described above, the driving power of a motor or the like with large power consumption. By shutting off the power supply to the microcomputer control device having the power source and the microprocessor, the load on the secondary side of the constant voltage switching DC power supply circuit is light, that is, almost no current is supplied to the secondary side of the constant voltage switching DC power supply circuit. Will not flow. For this reason, a certain amount of time is required until the output voltage of the constant voltage switching DC power supply circuit decreases due to the electrostatic capacitance such as a capacitor disposed on the secondary side of the constant voltage switching DC power supply circuit. Therefore, depending on the capacitance ratio between the primary side capacitance and the secondary side capacitance of the constant voltage switching DC power supply circuit, the primary side voltage may be reduced before the secondary side voltage drops to the power saving voltage. There is a risk that the switching duty ratio drops below the operating voltage of the control circuit that controls the switching duty ratio, the control circuit stops, and the switching duty ratio of the constant voltage switching DC power supply circuit becomes uncontrollable. In order to solve such a problem, for example, it can be easily solved by increasing the capacity of the capacitor disposed in the power supply line on the primary side of the constant voltage switching DC power supply circuit. Providing a capacitor causes a problem that the cost increases significantly.

  The present invention has been made in view of such a situation, and an object of the present invention is to reduce the output voltage of a constant voltage switching DC power supply circuit in an electronic apparatus using a constant voltage switching DC power supply circuit as a power source. It is possible to prevent the output voltage of the constant voltage switching DC power supply circuit from becoming uncontrollable at a low cost when operating in the power saving mode.

  To achieve the above object, according to a first aspect of the present invention, there is provided a constant voltage switching DC power supply circuit and a switching duty of a primary side of the constant voltage switching DC power supply circuit based on an output voltage of the constant voltage switching DC power supply circuit. A voltage control circuit that controls the output voltage of the constant voltage switching DC power supply circuit by controlling a ratio, and a load device connected to a secondary side of the constant voltage switching DC power supply circuit, The load device includes an operation mode control unit that controls an operation mode of the electronic device, and the operation mode control unit is configured to satisfy a condition that the operation mode of the electronic device shifts from a normal mode to a power saving mode. The voltage control circuit is controlled to reduce the output voltage of the constant voltage switching DC power supply circuit from a rated voltage to a power saving voltage. At the same time, the blocking while stepwise reducing the electric power supplied from the constant-voltage switching DC power supply circuit to the load device is an electronic device which is characterized by.

  As described above, when the operation mode of the electronic device is shifted to the power saving mode, the output voltage of the constant voltage switching DC power supply circuit is reduced to the power saving voltage, and at the same time the secondary voltage of the constant voltage switching DC power supply circuit is By shutting off the power supply to the connected load device, the load on the secondary side of the constant voltage switching DC power supply circuit becomes light, and almost no current flows on the secondary side. For this reason, the time until the output voltage of the constant voltage switching DC power supply circuit decreases is increased due to the electrostatic capacity of a capacitor or the like disposed on the secondary side of the constant voltage switching DC power supply circuit. Therefore, depending on the capacitance ratio between the primary-side capacitance and the secondary-side capacitance of the constant voltage switching DC power supply circuit, the primary-side voltage is reduced before the secondary-side voltage drops to the power-saving voltage. May fall below the operating voltage of the control circuit that controls the switching duty ratio, the control circuit may stop, and the switching duty ratio of the constant voltage switching DC power supply circuit may become uncontrollable.

  Therefore, when the condition that the operation mode of the electronic device shifts from the normal mode to the power saving mode is satisfied, the output voltage of the constant voltage switching DC power supply circuit is lowered from the rated voltage to the power saving voltage, and at the same time, the constant voltage switching is performed. The power supply from the DC power supply circuit to the load device is cut off while gradually decreasing. As a result, the load on the secondary side of the constant voltage switching DC power supply circuit can be reduced in steps, so that the current flowing on the secondary side of the constant voltage switching DC power supply circuit is reduced in steps. Can do. That is, when the output voltage of the constant voltage switching DC power supply circuit is reduced from the rated voltage to the power saving voltage, the current flowing to the secondary side of the constant voltage switching DC power supply circuit is not reduced at once, but is reduced step by step. As a result, the discharge time of electricity stored in the secondary side capacitance of the constant voltage switching DC power supply circuit is shortened, so the voltage (output voltage) on the secondary side of the constant voltage switching DC power supply circuit is saved. The time to decrease to the power voltage can be shortened. Therefore, before the voltage on the secondary side of the constant voltage switching DC power supply circuit decreases to the power saving voltage, the voltage on the primary side decreases to below the operating voltage of the control circuit that controls the switching duty ratio. It is possible to eliminate the possibility that the circuit is stopped and the switching duty ratio of the constant voltage switching DC power supply circuit becomes uncontrollable.

  Thereby, according to the electronic device shown in the first aspect of the present invention, in the electronic device using the constant voltage switching DC power supply circuit as a power source, the voltage (output voltage) on the secondary side of the constant voltage switching DC power supply circuit is reduced. Since it is possible to eliminate the possibility that the switching duty ratio of the constant voltage switching DC power supply circuit becomes uncontrollable when the power saving voltage is lowered, in an electronic device using the constant voltage switching DC power supply circuit as a power source, It is possible to prevent the output voltage of the constant voltage switching DC power supply circuit from becoming uncontrollable at low cost when operating the electronic device in the power saving mode by reducing the output voltage of the constant voltage switching DC power supply circuit. The effect that it can be obtained.

  According to a second aspect of the present invention, in the first aspect described above, the load device includes a driving force source that operates at a rated output voltage of the constant voltage switching DC power supply circuit, and an output of the constant voltage switching DC power supply circuit. The voltage is converted into control circuit voltage and output, and even if the output voltage of the constant voltage switching DC power supply circuit drops from the rated voltage to the power saving voltage, the output voltage can be maintained at the control circuit voltage. A DC-DC converter having such a configuration, a main control circuit having means for controlling the driving force source, operating from the voltage for the control circuit output from the DC-DC converter, and the constant voltage switching DC power supply circuit First power ON / OFF means capable of turning ON / OFF the power supply to the driving force source, and power from the DC-DC converter to the main control circuit A second power ON / OFF means capable of turning on / off the power supply, and a sub-control circuit operating with the voltage for the control circuit output from the DC-DC converter and having the operation mode control means. The control means sets the control voltage of the voltage control circuit to the power saving voltage when the condition for the operation mode of the electronic device to shift from the normal mode to the power saving mode is satisfied, and at the same time, turns on the first power ON After turning off the / OFF means, the second power ON / OFF means is turned off when the output voltage of the constant voltage switching DC power supply circuit is reduced to the power saving voltage.

  As described above, when the condition that the operation mode of the electronic device shifts from the normal mode to the power saving mode is satisfied, the control voltage of the voltage control circuit is set to the power saving voltage, and at the same time, the first power ON / OFF means Only the power supply from the constant voltage switching DC power supply circuit to the driving power source is cut off, and the power supply from the DC-DC converter to the main control circuit is maintained with the second power ON / OFF means turned on. maintain. The output voltage of the constant voltage switching DC power supply circuit was not immediately reduced to the power-saving voltage due to the electricity stored in the secondary side capacitance of the constant voltage switching DC power supply circuit, but was stored in that capacitance. It gradually decreases as electricity is discharged. Since the power consumption of the main control circuit that is supplied with power is reduced, the discharge time of the electricity stored in the secondary side capacitance of the constant voltage switching DC power supply circuit is shortened. The time for the secondary side voltage (output voltage) of the switching DC power supply circuit to be reduced to the power saving voltage can be shortened. Then, when the output voltage of the constant voltage switching DC power supply circuit decreases to the power saving voltage, the second power ON / OFF means is turned off to cut off the power supply from the DC-DC converter to the main control circuit. As a result, before the voltage on the secondary side of the constant voltage switching DC power supply circuit decreases to the power saving voltage, the voltage on the primary side decreases below the operating voltage of the control circuit controlling the switching duty ratio. The possibility that the control circuit stops and the switching duty ratio of the constant voltage switching DC power supply circuit becomes uncontrollable can be eliminated.

  In the power saving mode, the power supply to the main control circuit is cut off in addition to the power supply to the driving power source of the electronic device, so the power consumption of the electronic device is the power consumption of the sub control circuit with a small scale. As a result, the power consumption of the electronic device can be significantly reduced as compared with an electronic device in which a large-scale main control circuit having the main control function of the electronic device is operating in the power saving mode. In addition, when the condition that the operation mode of the electronic device shifts from the normal mode to the power saving mode is satisfied, the output voltage of the constant voltage switching DC power supply circuit is lowered from the rated voltage to the power saving voltage by the voltage control circuit. Since only the power supply from the constant voltage switching DC power supply circuit to the driving power source is cut off and the power supply from the DC-DC converter to the main control circuit is maintained, the output voltage of the constant voltage switching DC power supply circuit is rated. While the voltage drops from the voltage to the power saving voltage, the main control circuit can execute data processing and the like necessary when the electronic device shifts to the power saving mode. Further, since the main control circuit can operate even when the output voltage of the constant voltage switching DC power supply circuit is a power saving voltage, the second control circuit operates from the sub control circuit that operates even in the power saving mode as necessary. By controlling the power ON / OFF means to be in the ON state, the main control circuit can be operated while maintaining the output voltage of the constant voltage switching DC power supply circuit at the power saving voltage.

  According to a third aspect of the present invention, in the second aspect described above, the sub-control circuit has receiving means for receiving an operation mode control signal from a remote control device, and the operation mode control means is the remote control device. When a power saving mode control signal is received from the control device, the control voltage of the voltage control circuit is set to the power saving voltage, and at the same time, the first power ON / OFF means is turned OFF, and then the constant voltage switching DC When the output voltage of the power supply circuit drops to the power saving voltage, the second power ON / OFF means is turned off, and when the normal mode control signal is received from the remote control device, the control voltage of the voltage control circuit Is set to the rated voltage, and at the same time, the first power ON / OFF means and the second power ON / OFF means are turned ON.

  As described above, the control signal from the remote control device is received when the electronic device is in the power saving mode by providing means for receiving the control signal from the remote control device in the sub control circuit that is operating even in the power saving mode. Therefore, for example, the operation mode of the electronic device can be switched by a remote control device such as an infrared remote controller.

  According to a fourth aspect of the present invention, in the second aspect or the third aspect described above, the sub-control circuit includes voltage detection means for detecting an output voltage of the constant voltage switching DC power supply circuit, and the operation The mode control means sets the control voltage of the voltage control circuit to the power saving voltage when the condition for the operation mode of the electronic device to shift from the normal mode to the power saving mode is satisfied, and at the same time, the first power The electronic apparatus is characterized in that after the ON / OFF means is turned off, the second power ON / OFF means is turned off when the detection voltage of the voltage detection means drops to a power saving voltage.

  Thus, the voltage detection means for detecting the output voltage of the constant voltage switching DC power supply circuit is provided, and when the output voltage of the constant voltage switching DC power supply circuit is reduced from the rated voltage to the power saving voltage, the first power ON / After the OFF means is turned off and the power supply from the constant voltage switching DC power supply circuit to the driving power source is cut off, the second voltage is detected after detecting that the output voltage of the constant voltage switching DC power supply circuit has decreased to the power saving voltage. The power ON / OFF means is turned off to cut off the power supply to the main control circuit. As a result, the power supply to the main control circuit is cut off before the output voltage of the constant voltage switching DC power supply circuit drops from the rated voltage to the power saving voltage, and the output voltage of the constant voltage switching DC power supply circuit is reduced from the rated voltage. It can be prevented that the time to decrease to the power voltage becomes long. Therefore, before the voltage on the secondary side of the constant voltage switching DC power supply circuit decreases to the power saving voltage, the voltage on the primary side decreases to below the operating voltage of the control circuit that controls the switching duty ratio. It is possible to more reliably prevent the circuit from being stopped and the switching duty ratio of the constant voltage switching DC power supply circuit from becoming uncontrollable.

  According to a fifth aspect of the present invention, in the second aspect or the third aspect described above, the operation mode control means is configured such that the condition that the operation mode of the electronic device shifts from the normal mode to the power saving mode is satisfied. The power control circuit sets the control voltage of the voltage control circuit to a power saving voltage, and at the same time the second power ON / OFF means is turned on when a predetermined time has elapsed after the first power ON / OFF means is turned OFF. The electronic device is characterized by being turned off.

  In this way, the output voltage of the constant voltage switching DC power supply circuit is reduced from the rated voltage to the power saving voltage, and at the same time, the first power ON / OFF means is turned OFF to switch from the constant voltage switching DC power supply circuit to the driving power source. After the power supply is cut off, the second power ON / OFF means may be turned off when a predetermined time elapses to cut off the power supply from the DC-DC converter to the main control circuit. The output voltage of the constant voltage switching DC power supply circuit is reduced from the rated voltage to the power saving voltage, and at the same time the power supply from the constant voltage switching DC power supply circuit to the driving power source is cut off, and then the output voltage of the constant voltage switching DC power supply circuit Power supply to the main control circuit before the output voltage of the constant voltage switching DC power supply circuit is reduced from the rated voltage to the power saving voltage by setting the predetermined time to a time sufficient for the voltage to drop to the power saving voltage. Can be prevented from increasing the time during which the output voltage of the constant voltage switching DC power supply circuit decreases from the rated voltage to the power saving voltage.

  According to a sixth aspect of the present invention, in any one of the second to fifth aspects described above, a main scanning drive unit that reciprocates a recording head that ejects ink onto a recording material in a main scanning direction; Sub-scan driving means for transporting the recording material in the sub-scanning direction by a predetermined transport amount, and the driving force source is for main scanning driving for driving the recording head driving device and the main scanning driving means. A motor and a sub-scanning drive motor for driving the sub-scanning driving means, wherein the main control circuit is recording control data input from an external device, and the control received by the sub-control circuit from the remote control device An electronic apparatus comprising: a recording control unit that controls the recording head, the main scanning driving unit, and the sub-scanning driving unit based on a signal to execute recording on a recording material. is there.

  According to the electronic apparatus shown in the sixth aspect of the present invention, a scanner or a copy in addition to a recording apparatus such as an ink jet recording apparatus or a facsimile provided with a means for recording on recording paper, or a means for recording on recording paper. In an electronic device such as a digital multi-function peripheral having functions and the like, the operational effects of the invention according to any one of the second to fifth aspects described above can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the ink jet recording apparatus, and FIG. 2 is a perspective view of the ink jet recording apparatus with the main body cover removed. FIG. 3 is a schematic side sectional view of the ink jet recording apparatus. FIG. 4 is a block diagram of a control unit that performs various controls of the ink jet recording apparatus.

  First, a schematic configuration of an ink jet recording apparatus 50 as an “electronic device” according to the present invention will be described with reference to FIGS. The ink jet recording apparatus 50 has a box-like appearance, is formed to be as large as a video tape recorder, and is assumed to be used in a state of being stored in an audio rack, a TV rack, or the like. It has a configuration. A front cover 2 that can be opened and closed in front is provided at the front center of the box-shaped body cover 1. From the opening of the front cover 2 that opens to the front, When the recording paper P as the “recording material” is discharged and recording is performed on the label surface of the optical recording disc D such as a DVD, the optical recording disc as the “recording material” mounted on the disc tray 7 The disc tray 7 temporarily protrudes from the inside of the ink jet recording apparatus 50 during execution of recording on D. Further, the front cover 2 serves as a stacker for stacking recording sheets P discharged after recording is performed with the front cover 2 opened to the front side. A paper feed cassette 8 as a “recording paper storage unit” for stacking the recording papers P is provided below the front cover 2, and recording is performed in the paper feeding cassette 8 while being pulled out to the front side. Paper P can be stacked. An openable / closable cover 3 is provided above the front cover 2, and an ink cartridge unit 15 is provided in the openable / closable cover 3. In the ink cartridge unit 15, a plurality of ink cartridges 16 (see FIG. 3) filled with ink are detachably arranged side by side in the width direction of the ink jet recording apparatus 50, and the open / close cover 3 is opened. The ink cartridge 16 can be replaced. On the left side of the front cover 2, a memory slot cover 4 having a memory slot to which a flash memory card and the like can be attached and detached is disposed. Further, a remote control light receiver 6 that receives a control signal from a remote control 120 as a “remote control device” is disposed below the memory slot cover 4.

  Next, an outline of the internal configuration of the ink jet recording apparatus 50 will be described with reference to FIG. The base of the ink jet recording apparatus 50 includes a lower chassis 13, a main frame 11 extending in the width direction of the main body of the ink jet recording apparatus 50, and a depth direction of the main body of the ink jet recording apparatus 50 disposed on both sides of the main frame 11. The side frame right 12 and the side frame left 14 are parallel to each other. Between the right side frame 12 and the left side frame 14, a carriage guide shaft 51 and a sub carriage guide shaft 511 are pivotally supported at a predetermined interval in the sub scanning direction Y in parallel with the main scanning direction X. . The carriage guide shaft 51 and the sub-carriage guide shaft 511 are guide shafts for supporting the carriage 61 on which the recording head 62 for ejecting ink onto the recording paper P is mounted so as to be able to reciprocate in the main scanning direction X. 51, the rear portion of the carriage 61 is inserted, and the sub-carriage guide shaft 511 supports the front portion of the carriage 61 from below, thereby the recording head 62 (FIG. 3) mounted on the carriage 61 and the recording head 62. The carriage 61 is supported so as to be able to reciprocate in the main scanning direction X in a state where a distance between the head surface and the recording paper P facing the platen gap (platen gap: hereinafter referred to as “PG”) is defined.

Next, the conveyance path of the recording paper P as the “recording material” and the disc tray 7 will be described with reference to FIGS.
An “automatic paper feeder” that automatically feeds recording paper P one by one as a recording material toward a “sub-scanning drive unit” described later includes a paper feed cassette 8 and a paper feed roller 83. A hopper 81 is provided at the bottom of the paper feed cassette 8 on which a plurality of recording papers P are stacked. The hopper 81 is disposed so as to be swingable with a shaft 82 as a swing shaft. By pushing up the recording paper P stacked on the hopper 81 from below, recording is performed on a paper feed roller 83 provided on the top. Press the paper P. The paper feed roller 83 has a substantially D shape when viewed from the side, and the outer periphery is formed of a high friction member (for example, a rubber material). When the recording paper P is fed, the uppermost recording paper P in contact with the arc portion of the paper feeding roller 83 is fed in the sub-scanning direction Y by the rotation of the paper feeding roller 83. The “automatic paper feeder” is disposed below the paper feed roller 83, and the recording paper P whose surface is pressed against the outer peripheral surface of the paper feed roller 83 by the hopper 81 is fed by the drive rotation of the paper feed roller 83. A separation pad (not shown) is provided as a “separation unit” that prevents another recording paper P from being overlapped when fed in the paper direction (sub-scanning direction Y). . By feeding the recording paper P while rotating the paper feeding roller 83 with the recording paper P sandwiched between the separation pad and the paper feeding roller 83, the recording paper P to be fed and the other are about to be fed. The recording paper P is separated. Further, the “automatic paper feeder” pushes back the recording paper P partially protruding out of the paper feeding cassette 8 on which the recording paper P separated by the separation pad is stacked, into the paper feeding cassette 8. In addition, the recording paper P in a state of partially protruding out of the paper feed cassette 8 is disposed below the paper feed roller 83 so as to be able to advance into the paper feed path so as to be pushed toward the paper feed cassette 8. A paper return lever (not shown) is provided.

  On the downstream side of the paper feed roller 83 in the sub-scanning direction Y, a conveyance drive roller 53 having a high frictional resistance film uniformly applied to the outer peripheral surface, and can be driven to rotate while being pressed and urged by the conveyance drive roller 53. A conveyance driven roller 54 that is pivotally supported by the PF motor 57 as a “conveyance drive motor” that drives the conveyance drive roller 53 and a “rotation” that detects the rotation amount of the conveyance drive roller 53. The rotary encoder 31 as “amount detection means” constitutes “sub-scanning drive means” for transporting the recording paper P or the disc tray 7 in the sub-scanning direction Y by a predetermined transport amount. The “sub-scanning driving means” sandwiches the recording paper P or the disk tray 7 between the transport driving roller 53 and the transport driven roller 54, and the rotational driving force of the PF motor 57 is transmitted to the pulley 59 via the endless belt 58. The recording paper P or the disk tray 7 is transported in the sub-scanning direction Y by the rotation of the transport driving roller 53 that is driven and rotated by the rotation of the pulley 59 transmitted through an intermediate gear (not shown). Then, the rotation amount of the PF motor 57 is described later according to the rotation amount of the conveyance drive roller 53 detected by the rotary encoder 31 so that the recording paper P or the disc tray 7 is conveyed by a predetermined conveyance amount. 100.

  A platen 52 is disposed on the downstream side of the transport driving roller 53 in the sub-scanning direction Y so as to face the head surface of the recording head 62 in the vertical direction. The recording paper P or the disc tray 7 conveyed by the above-mentioned “sub-scanning driving means” is supported by the platen 52 from below, and the recording head 62 reciprocates in the main scanning direction X by the “main scanning driving means”. Recording is performed by ejecting ink from the ink. The “main scanning driving means” includes a carriage 61 and a CR motor 63 as a “carriage driving motor” serving as a driving force source for reciprocating the carriage 61. The rotational driving force of the CR motor 63 is shown in FIG. A rotational motion is converted into a linear reciprocating motion and transmitted to the carriage 61 via a driving force transmission mechanism such as an endless belt (not shown). In this embodiment, the recording head 62 is provided at the bottom of the carriage 61, but no ink cartridge is mounted on the carriage 61 that reciprocates in the main scanning direction X, and the ink cartridge unit 15 described above. Ink is supplied to the carriage 61 through the flexible collecting tube 17 from the plurality of ink cartridges 16 stored in the printer. In the flexible collecting tube 17, independent ink supply paths are formed inside as many as the number of ink cartridges 16. The ink in each ink cartridge 16 is pressurized by a pump or the like (not shown) and supplied individually to the recording head 62 via the flexible collecting tube 17.

  On the downstream side of the recording head 62 in the sub-scanning direction Y, the rotational driving force of the PF motor 57 is transmitted and rotated to be driven, and the paper driving roller 55 can be driven and rotated while being urged by the paper discharging drive roller 55. A paper discharge driven roller 56 supported on the shaft is disposed. The recording paper P during and after recording is sandwiched between the paper discharge driving roller 55 and the paper discharge driven roller 56, and the rotational driving force of the PF motor 57 is transmitted to the pulley 59 via the endless belt 58. The rotation of 59 is transmitted through an intermediate gear (not shown) and the like, and is discharged from the opening in the state where the front panel 2 is opened in the sub-scanning direction Y by the rotation of the discharge driving roller 55 that rotates. A disc tray 7 on which the optical recording disc D can be mounted is disposed above the paper feed cassette 8. The disc tray 7 has a rack 71 (see FIG. 2) formed on the side end thereof, and is arranged so as to be able to move straightly in a substantially horizontal posture by rotation of a pinion gear (not shown) that meshes with the rack 71. ing. Then, after the disk tray 7 is conveyed until the leading end is nipped by the conveyance drive roller 53 and the conveyance driven roller 54 by the rotation of the pinion gear, the conveyance drive roller 53 is rotated in both directions thereafter. It is sent in the sub-scanning direction Y or the reverse feed direction YR. Further, when the optical recording disk D is attached to or detached from the disk tray 7, the optical recording disk D is transported in the sub-scanning direction Y to a position protruding from the opening where the front panel 2 is opened (a position indicated by a virtual line in FIG. 2).

Next, the configuration of the recording control unit 100 will be described with reference to FIG.
The recording control unit 100 is connected to a host computer 200 that transmits recording control data to the ink jet recording apparatus 50 so that data can be transmitted and received. The recording control unit 100 includes a ROM 101, a RAM 102, an interface unit 103, an MPU 104, a DC unit 105, a PF motor driver 106, a CR motor driver 107, a head driver 108, and a nonvolatile memory 109. The MPU 104 and the DC unit 105 include a rotary encoder 31 as a “rotation amount detection unit” that detects the rotation amount of the transport driving roller 53, and a linear encoder 32 as a “carriage movement amount detection unit” that detects the movement amount of the carriage 61. The paper detector 33 for detecting the start and end of the recording paper P being conveyed, the PW sensor 34 for detecting the width in the main scanning direction X of the recording paper P mounted on the carriage 61, and the power source of the ink jet recording apparatus 50 are turned on. Output signals of a power supply SW 35 for turning on / off and a tray SW 36 for performing a loading / unloading operation of the disk tray 7 are input. In this embodiment, the PW sensor 34 is an optical sensor provided at the bottom of the carriage 61. The PW sensor 34 detects the width of the recording paper P in the sub-scanning direction Y by the main scanning of the carriage 61, and the disc tray 7 This is used to detect the feed position of the disc tray 7 by recognizing an identification mark (not shown) attached to. Further, it is also used for detecting the presence or absence of the optical recording disk D on the disk tray 7 and the center position of the optical recording disk D.

  The MPU 104 performs arithmetic processing for executing the control program of the ink jet recording apparatus 50 and other necessary arithmetic processing. The ROM 101 stores a control program (firmware) necessary for controlling the ink jet recording apparatus 50, data necessary for processing, and the like. The interface unit 103 has a communication interface function with the host computer 200, receives recording control data from the host computer 200, and also has a driver for the memory slot 37 and an interface function. The RAM 102 is used as a primary storage area for various data including recording control data transferred from the host computer 200 via the work area of the MPU 104 and the interface unit 103. The nonvolatile memory 109 stores various types of information that need to be retained even after the inkjet recording apparatus 50 is turned off. The DC unit 105 is a control circuit for performing speed control of the PF motor 57 and the CR motor 63 that are DC motors. The DC unit 105 determines the speeds of the PF motor 57 and the CR motor 63 based on the control command sent from the MPU 104, the output signal of the rotary encoder 31, the output signal of the linear encoder 32, and the output signal of the paper detector 33. Various calculations for control are performed, and motor control signals based on the calculation results are sent to the PF motor driver 106 and the CR motor driver 107. The PF motor driver 106 drives and controls the PF motor 57 based on the motor control signal from the DC unit 105. In this embodiment, the PF motor 57 meshes with a paper feed roller 83, a conveyance drive roller 53, a paper discharge drive roller 55, and a rack 71 (see FIG. 2) formed on the side end of the disc tray 7. It becomes a rotational driving force source of a pinion gear (not shown) that conveys the tray 7. The CR motor driver 107 drives or controls the CR motor 63 based on a motor control signal from the DC unit 105 to reciprocate the carriage 61 in the main scanning direction, or stop and hold it. The head driver 59 drives and controls the recording head 62 based on a head control signal from the MPU 104.

  Next, a power supply system of the ink jet recording apparatus 50 as an “electronic device” according to the present invention and power control in the power saving mode will be described with reference to FIG.

FIG. 5 shows a first embodiment of the power supply system of the ink jet recording apparatus 50.
The ink jet recording apparatus 50 includes a constant voltage switching DC power supply circuit 110 known as a constant voltage DC power supply apparatus. First, the constant voltage switching DC power supply circuit 110 is a “smoothing circuit” composed of a rectifier bridge DB1 and a capacitor C11, and smoothes the AC voltage of the AC power supply AC and converts it to a DC voltage. Next, the DC voltage is switched by the switching transistor Q1 and converted into a high frequency pulse. The high-frequency pulse is applied to the first primary winding P1 of the high-frequency transformer T1, and the high-frequency pulse generated in the secondary winding S1 after being transformed by the high-frequency transformer T1 is again converted to a DC voltage by the diode D2 and the capacitor C2. It is returned and a DC voltage is output. When the output voltage varies, the voltage control circuit 21 detects the voltage variation and transmits it to the switching control circuit 111 connected to the second primary winding P2 of the high-frequency transformer T1. The switching control circuit 111 controls the duty ratio of the high frequency pulse by changing the ON-OFF interval of the switching transistor Q1. Since the average voltage of the high frequency pulse becomes the DC output voltage, and the output voltage is controlled by the duty ratio, the ON duty is narrowed when the DC output voltage is high, and the ON duty is widened when the DC output voltage is low. The duty ratio of the pulse is controlled, thereby maintaining a constant DC output voltage. In the embodiment, the switching transistor Q1 is a field effect transistor. Since the field effect transistor can be operated with a smaller current than a bipolar transistor, a more stable switching operation is possible and a more stable DC voltage can be output.

  The output voltage of the constant voltage switching DC power supply circuit 110 is controlled by the voltage control circuit 21 and maintained at 42 V as the “rated voltage” while the operation mode of the ink jet recording apparatus 50 is the normal mode. While the operation mode of the device 50 is the power saving mode, it is maintained at about 13 V as the “power saving voltage”. The output of the constant voltage switching DC power supply circuit 110 is the above-described PF motor 57, CR motor 63, recording head 62, and constant voltage switching DC as a “load device” supplied with power from the constant voltage switching DC power supply circuit 110. A DC-DC converter 22 that converts the output voltage of the power supply circuit 110 into a control circuit voltage 5 V and outputs the same, and a recording control unit 100 as a “main control circuit” via the DC-DC converter 22, a “sub-control circuit” A sub-control unit 150 is connected. The PF motor 57, the CR motor 63, and the recording head 62 are directly supplied with power from the output of the constant voltage switching DC power supply circuit 110, operate at 42 V as the “rated voltage”, and output of the constant voltage switching DC power supply circuit 110. When the voltage is reduced to about 13V as the “power saving voltage”, it does not operate. The DC-DC converter 22 operates at 42V as the “rated voltage”, and even if the output voltage of the constant voltage switching DC power supply circuit 110 drops to about 13V as the “power saving voltage”, the output voltage is for the control circuit. It has a configuration that can be maintained at a voltage of 5V. The control circuit voltage 5 V output from the DC-DC converter 22 is supplied to the recording control unit 100 and the sub-control unit 150. In the power supply path (42 V line) from the constant voltage switching DC power supply circuit 110 to the PF motor 57, CR motor 63, and recording head 62, the PF motor 57, CR motor 63, and recording from the constant voltage switching DC power supply circuit 110 are recorded. A switch SW1 is provided as “first power ON / OFF means” capable of shutting off the power supply to the head 62. “Second power ON / OFF means” that can cut off the power supply from the DC-DC converter 22 to the recording control unit 100 in the power supply path (5 V line) from the DC-DC converter 22 to the recording control unit 100. A switch SW2 is provided. The switches SW1 and SW2 are ON / OFF controlled by an operation mode control circuit 151 described later.

  The sub-control unit 150 receives an operation mode control circuit 151 as an “operation mode control unit” for controlling the operation mode of the ink jet recording apparatus 50 and a control signal from the remote controller 120 via the remote control light receiver 6. A remote control receiving circuit 152 as means. Here, an operation mode of the ink jet recording apparatus 50 will be described. The normal mode is a mode selected when recording on the label surface of the optical recording disk D mounted on the recording paper P or the tray 7 in a state where the power of the ink jet recording apparatus 50 is ON. The normal mode is maintained during execution, immediately after execution of recording, or while the user is operating the ink jet recording apparatus 50. On the other hand, in the power saving mode, the ink jet recording apparatus 50 is powered on, for example, without recording on the label surface of the optical recording disk D mounted on the recording paper P or the tray 7, and When a certain time (for example, 3 minutes) elapses without any user operation, the power consumption of the ink jet recording apparatus 50 is reduced while recording is not performed while the power is on and power saving is performed. This is the operation mode selected for the purpose. In the ink jet recording apparatus 50 shown in the embodiment, recording on the label surface of the optical recording disk D mounted on the recording paper P or the tray 7 is not performed, and no operation is performed by the user. When time (for example, 3 minutes) has elapsed, the operation mode is set as a condition for shifting from the normal mode to the power saving mode. The operation mode control circuit 151 shifts the operation mode of the ink jet recording apparatus 50 to the power saving mode when this condition is satisfied. The operation mode control circuit 151 operates when the user operates the ink jet recording apparatus 50 to perform recording on the label surface of the optical recording disk D mounted on the recording paper P or the tray 7. The mode is changed from the power saving mode to the normal mode. The ink jet recording apparatus 50 shown in the embodiment has a configuration capable of transmitting an operation mode control signal from the remote controller 120, and the remote control receiving circuit 152 changes the operation mode from the normal mode from the remote controller 120. Even when an operation mode control signal for shifting to the power saving mode is received, a condition for shifting the operation mode from the normal mode to the power saving mode is set. When the operation mode control circuit 151 receives an operation mode control signal for shifting the operation mode from the normal mode to the power saving mode from the remote controller 120, the operation mode control circuit 151 shifts the operation mode from the normal mode to the power saving mode and operates from the remote control 120. When an operation mode control signal for shifting the mode from the power saving mode to the normal mode is received, the operation mode is shifted from the power saving mode to the normal mode.

  When the condition for shifting the operation mode of the ink jet recording apparatus 50 from the normal mode to the power saving mode is satisfied, the operation mode control circuit 151 first sets the output voltage of the constant voltage switching DC power supply circuit 110 by the voltage control circuit 21 to 42V. The control voltage of the voltage control circuit 21 is set to about 13V in order to reduce the rated voltage to a power saving voltage of about 13V. At the same time, the switch SW <b> 1 is turned off to cut off the power supply from the constant voltage switching DC power supply circuit 110 to the PF motor 57, the CR motor 63, and the recording head 62. Then, the output voltage of the constant voltage switching DC power supply circuit 110 is detected by the voltage detection means 23, and when the output voltage of the constant voltage switching DC power supply circuit 110 drops to a power saving voltage of about 13V, the switch SW2 is turned OFF. The power supply from the DC-DC converter 22 to the recording control unit 100 is cut off. By reducing the output voltage of the constant voltage switching DC power supply circuit 110 from 42V to about 13V, the power consumption of the constant voltage switching DC power supply circuit 110 is reduced. Further, the power consumption of the PF motor 57, the CR motor 63, and the recording head 62 is reduced to 0 by cutting off the power supply from the constant voltage switching DC power supply circuit 110 to the PF motor 57, the CR motor 63, and the recording head 62. Become. Further, by cutting off the power supply from the DC-DC converter 22 to the recording control unit 100, the power consumption of the recording control unit 100 as the “main control circuit” becomes zero. That is, the ink jet recording apparatus 50 operating in the power saving mode is in a state where only the sub-control unit 150 is operating in a state where the power consumption of the constant voltage switching DC power supply circuit 110 is reduced. The power consumption can be greatly reduced compared with the case of operation. Further, while operating in the power saving mode, the sub-control unit 150 is operating, so that the control signal from the remote controller 120 can be received by the remote controller receiving circuit 152. When the remote control receiving circuit 152 receives from the remote control 120 a control signal for shifting the operation mode from the power saving mode to the normal mode, the operation mode control circuit 151 causes the voltage control circuit 21 to operate the constant voltage switching DC power supply circuit 110. The control voltage of the voltage control circuit 21 is set to 42V so as to increase from the power saving voltage of 13V to the rated voltage of 42V. At the same time, the switch SW1 is turned on to supply power from the constant voltage switching DC power supply circuit 110 to the PF motor 57, the CR motor 63, and the recording head 62, and the switch SW2 is turned on to turn on the DC-DC converter 22. Power to the recording control unit 100. The PF motor 57, the CR motor 63, and the recording head 62 can be operated at a rated voltage of 42V, and the recording control by the recording control unit 100 can be executed at any time.

  FIG. 6 shows voltage changes of the capacitors C1 and C2 of the constant voltage switching DC power supply circuit 110 when the output voltage of the constant voltage switching DC power supply circuit 110 decreases from the rated voltage (42V) to the power saving voltage (about 13V). It is the graph shown typically.

  As described above, the output voltage of the constant voltage switching DC power supply circuit 110 is reduced from the rated voltage (42 V) to the power saving voltage (about 13 V), and at the same time, almost a current flows in the secondary winding S1 of the high frequency transformer T1. If there is no state, the output voltage (secondary side) depends on the capacitance ratio between the capacitance of the second primary winding P2 (capacitor C1) and the capacitance of the secondary winding S1 (capacitor C2). Before the voltage of the winding S1 is lowered to the power saving voltage (about 13V), the voltage of the second primary winding P2 (about 28V) is lowered to the operation lower limit voltage or lower of the switching control circuit 111, and the switching control is performed. There is a possibility that the circuit 111 stops and the switching duty ratio of the constant voltage switching DC power supply circuit 110 becomes uncontrollable. That is, the output voltage of the constant voltage switching DC power supply circuit 110 is reduced from the rated voltage (42V) to the power saving voltage (about 13V), and at the same time, almost no current flows in the secondary winding S1 of the high-frequency transformer T1. As a result, the discharge time of the capacitor C2 becomes longer (the time indicated by the symbol T2 in FIG. 6), thereby increasing the time required for the voltage of the capacitor C2 to drop from 42V to 13V (one point in FIG. 6). Capacitor C2 voltage waveform indicated by a chain line). In the meantime, the voltage of the second primary winding P2 of the high-frequency transformer T1 drops from 28V to below the lower limit operating voltage of the switching control circuit 111, and the switching control circuit 111 is stopped (shown by the one-dot chain line in FIG. 6). Capacitor C1 voltage waveform).

  Therefore, as described above, first, the control of the voltage control circuit 21 is performed in order to reduce the control voltage of the output voltage of the constant voltage switching DC power supply circuit 110 by the voltage control circuit 21 from the rated voltage of 42V to the power saving voltage of about 13V. When setting the voltage to about 13 V, only the switch SW1 is controlled to be OFF, and only the power supply from the constant voltage switching DC power supply circuit 110 to the PF motor 57, the CR motor 63, and the recording head 62 is cut off. While maintaining the ON control, the power supply from the DC-DC converter 22 to the recording control unit 100 is maintained. Then, the output voltage of the constant voltage switching DC power supply circuit 110 is detected by the voltage detection means 23, and when the output voltage of the constant voltage switching DC power supply circuit 110 drops to a power saving voltage of about 13V, the switch SW2 is turned OFF. The power supply from the DC-DC converter 22 to the recording control unit 100 is cut off. Accordingly, it is possible to prevent the switching control circuit 111 from being stopped due to the voltage of the second primary winding P2 of the high-frequency transformer T1 dropping below the operating voltage of the switching control circuit 111. That is, when the output voltage of the constant voltage switching DC power supply circuit 110 is reduced from the rated voltage (42V) to the power saving voltage (about 13V), the current flowing through the secondary winding S1 of the high-frequency transformer T1 is reduced at a stretch. Instead, the switch SW1 is turned OFF to cut off the power supply to the PF motor 57, the CR motor 63, and the recording head 62, and the switch SW2 remains in the ON control state and continues to supply power to the recording control unit 100. To do. Since the current flows through the secondary winding S1 of the high-frequency transformer T1 by the amount of power supplied to the recording control unit 100, the discharge time of the capacitor C2 is shortened (the time indicated by reference numeral T1 in FIG. 6), and the capacitor The time required for the voltage of C2 to decrease from 42V to 13V can be shortened (capacitor C2 voltage waveform shown by the solid line in FIG. 6). Thereby, before the voltage of the second primary winding P2 of the high frequency transformer T1 drops from 28V to below the operation lower limit voltage of the switching control circuit 111, the voltage of the secondary winding S1 of the high frequency transformer T1 is reduced to the power saving voltage. Since the voltage stabilizes at (about 13 V), the voltage of the second primary winding P2 of the high-frequency transformer T1 is also stabilized at a constant voltage at that time (capacitor C1 voltage waveform shown by the solid line in FIG. 6). Then, when the voltage (output voltage) of the secondary winding S1 of the high-frequency transformer T1 drops to the power saving voltage (about 13V), the switch SW2 is controlled to be OFF to cut off the power supply to the recording control unit 100.

  In this manner, in the ink jet recording apparatus 50 using the constant voltage switching DC power supply circuit 110 as a power source, when the output voltage of the constant voltage switching DC power supply circuit 110 is lowered and the ink jet recording apparatus 50 is operated in the power saving mode. In addition, it is possible to prevent the output voltage of the constant voltage switching DC power supply circuit 110 from becoming uncontrollable at a low cost.

  FIG. 7 shows a second embodiment of the power supply system of the ink jet recording apparatus 50. Note that a description of the same parts as those in the first embodiment is omitted.

  When the condition for shifting the operation mode of the ink jet recording apparatus 50 from the normal mode to the power saving mode is satisfied, the operation mode control circuit 151 first controls the output voltage of the constant voltage switching DC power supply circuit 110 by the voltage control circuit 21. Is reduced from a rated voltage of 42V to a power saving voltage of about 13V. At the same time, the timer 153 is started and the switch SW1 is controlled to be OFF, thereby interrupting the power supply from the constant voltage switching DC power supply circuit 110 to the PF motor 57, the CR motor 63, and the recording head 62. Then, when the count value of the timer 153 reaches a predetermined count value, the switch SW2 is controlled to be OFF, and the power supply from the DC-DC converter 22 to the recording control unit 100 is cut off. The predetermined count value is set to a count value corresponding to the time required for the output voltage of the constant voltage switching DC power supply circuit 110 to drop to a power saving voltage of about 13 V, and is a value determined by experiments or the like. Thus, after the switch SW1 is turned off, when the time required for the output voltage of the constant voltage switching DC power supply circuit 110 to drop to the power saving voltage of about 13 V has elapsed, the switch SW2 is turned off, The power supply from the DC-DC converter 22 to the recording control unit 100 may be cut off.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  The present invention relates to a constant voltage switching DC power supply circuit and an output voltage of the constant voltage switching DC power supply circuit by controlling a switching duty ratio of a primary side of the constant voltage switching DC power supply circuit based on an output voltage of the constant voltage switching DC power supply circuit. This can be implemented in an electronic device including a voltage control circuit for controlling the voltage and a load device connected to the secondary side of the constant voltage switching DC power supply circuit.

1 is a perspective view of an ink jet recording apparatus. FIG. 3 is a perspective view of the ink jet recording apparatus with a main body cover removed. 1 is a schematic side sectional view of an ink jet recording apparatus. It is a block diagram of a recording control unit of the ink jet recording apparatus. 1 is a first embodiment of a power supply system of an ink jet recording apparatus. It is the graph which showed the voltage change of the capacitor at the time of power saving mode. It is 2nd Example of the power supply system of an inkjet type recording apparatus.

Explanation of symbols

4 Memory slot cover, 6 Remote receiver, 7 Disc tray, 8 Paper cassette, 16 Ink cartridge, 17 Ink tube, 21 Voltage control circuit, 22 DC-DC converter, 23 Voltage detection means, 50 Inkjet recording device, 51 Carriage guide shaft, 52 Platen, 53 Conveyance drive roller, 54 Conveyance driven roller, 55 Discharge drive roller, 56 Discharge driven roller, 57 PF motor, 61 Carriage, 62 Recording head, 63 CR motor, 83 Feed roller, 100 Recording control unit, 101 ROM, 102 RAM, 103 interface unit, 104 MPU, 105 DC unit, 106 PF motor driver, 107 CR motor driver, 108 head driver, 109 nonvolatile memory, 110 constant voltage scan Switching DC power supply device, 111 switching control circuit, 120 remote control, 150 sub-control unit, 151 operation mode control circuit, 152 remote control receiving circuit, 153 timer, AC AC power supply, DB1 rectifier bridge, Q1 switching transistor, T1 high frequency transformer, P1 first 1 primary winding, P2 second primary winding, S secondary winding, SW1, SW2 switch, P recording paper, X main scanning direction, Y sub scanning direction

Claims (5)

A constant voltage switching DC power supply circuit, and a switching duty ratio on a primary side of the constant voltage switching DC power supply circuit based on an output voltage of the constant voltage switching DC power supply circuit to control an output voltage of the constant voltage switching DC power supply circuit An electronic device comprising a voltage control circuit to be controlled, and a load device connected to a secondary side of the constant voltage switching DC power supply circuit,
The load device includes a driving force source that operates at a rated output voltage of the constant voltage switching DC power supply circuit;
The output voltage of the constant voltage switching DC power supply circuit is converted into a control circuit voltage and output, and the output voltage is controlled even when the output voltage of the constant voltage switching DC power supply circuit drops from a rated voltage to a power saving voltage. A DC-DC converter capable of being maintained at a circuit voltage;
A main control circuit having means for operating the control circuit voltage output by the DC-DC converter and controlling the driving force source;
First power ON / OFF means capable of turning ON / OFF the power supply from the constant voltage switching DC power supply circuit to the driving force source;
A second power ON / OFF means capable of turning ON / OFF the power supply from the DC-DC converter to the main control circuit;
A sub-control circuit having an operation mode control unit that operates with a voltage for a control circuit output from the DC-DC converter and controls an operation mode of the electronic device;
The operation mode control means sets the control voltage of the voltage control circuit to the power saving voltage when the condition for the operation mode of the electronic device to shift from the normal mode to the power saving mode is satisfied . The second power ON / OFF means is turned OFF when the output voltage of the constant voltage switching DC power supply circuit drops to a power saving voltage after the power ON / OFF means is turned OFF . The sub-control circuit according to claim 1 , further comprising receiving means for receiving an operation mode control signal from a remote control device,
When the operation mode control means receives a power saving mode control signal from the remote control device, the operation mode control means sets the control voltage of the voltage control circuit to the power saving voltage, and at the same time the first power ON / OFF means After turning OFF, when the output voltage of the constant voltage switching DC power supply circuit is reduced to a power saving voltage, the second power ON / OFF means is turned OFF,
When a normal mode control signal is received from the remote control device, the control voltage of the voltage control circuit is set to a rated voltage, and at the same time, the first power ON / OFF means and the second power ON / OFF An electronic device characterized by turning on the means. 3. The sub control circuit according to claim 1 , wherein the sub control circuit includes a voltage detection unit that detects an output voltage of the constant voltage switching DC power supply circuit, and the operation mode control unit is configured so that the operation mode of the electronic device is from a normal mode. When the condition for shifting to the power saving mode is satisfied, the control voltage of the voltage control circuit is set to the power saving voltage, and at the same time, after the first power ON / OFF means is turned OFF, the detection of the voltage detecting means An electronic apparatus, wherein the second power ON / OFF means is turned OFF when the voltage drops to a power saving voltage. 3. The operation mode control means according to claim 1 , wherein when the condition for the operation mode of the electronic device to shift from the normal mode to the power saving mode is satisfied, the control voltage of the voltage control circuit is changed to the power saving voltage. An electronic apparatus comprising: turning off the second power ON / OFF means when a predetermined time has elapsed after turning off the first power ON / OFF means at the same time as setting. 5. The main scanning driving means for reciprocating a recording head for ejecting ink onto a recording material in the main scanning direction, and the recording material at a predetermined conveyance amount in the sub-scanning direction according to any one of claims 1 to 4. And a sub-scanning drive unit for driving the sub-scanning drive unit. The driving force source includes a driving device for the recording head, a main-scanning driving motor that drives the main-scanning driving unit, and a sub-scanning unit that drives the sub-scanning driving unit. The main control circuit, the main control circuit, based on the recording control data input from the external device and the control signal received by the sub-control circuit from the remote control device, the recording head, the main scanning drive And a recording control means for controlling the sub-scanning driving means to execute recording on the recording material.

Images