JP2002326425A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer in which a trouble due to current deficiency caused by simultaneous driving of actuators can be prevented as much as possible, by avoiding simultaneous driving of a plurality of actuators being controlled at a drive control section according to designation from a main control section as much as possible. SOLUTION: The printer is provided with a print control board 51 and an auxiliary control board 52. The print control board 51 is provided with a CPU 60, an ROM 61, an ASIC 63, and the like, and is responsible principally for print control. An ASIC 71 on the auxiliary control board 52 controls operation of a solenoid valve 48 for supplying ink to a subtank 45, a motor 56 for folding machine, and a cutter motor 57 according to designation from the CPU 60. The ASIC 71 also drives a roll sheet motor 14 independently based on a detection signal from a sensor 34 for detecting the slack of a roll sheet P. At the time of designating the ASIC 71 to control operation of the solenoid valve 48 and the motors 56 and 57, the CPU 60 makes a decision whether the roll sheet motor 14 is rotating or not. If it is rotating, the CPU 60 waits for stopping of the roll sheet motor 14 before designating the ASIC 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention controls the drive timing of a plurality of actuators that are driven and controlled under a common power supply by a drive control unit on an auxiliary control board provided separately from a print control board. And a printing device.

[0002]

2. Description of the Related Art When a new model is developed by adding an actuator to an existing printer to expand its functions, it is inefficient to change the design of an existing print control circuit board. In some cases, a circuit board that drives and controls only the actuator is added. In this case, the CPU is usually mounted on the print control circuit board, but a drive control circuit such as an ASIC (gate array) is mounted on the additional circuit board.

For example, in a printer using roll paper, the applicant of the present application has proposed the following as an actuator expected to be added. In other words, in order to reduce the load at the time of feeding the roll paper, a roll paper motor for actively feeding the roll paper is provided so that the roll paper before being sent to the print head is loosened. For example, the looseness of the roll paper is detected by a sensor, and when the required amount of looseness is no longer detected, the roll paper motor is driven to the feeding side. Since the roll paper motor needs to be driven promptly when the required amount of slack has disappeared, the roll paper motor is driven and controlled independently of other actuators based on the detection signal of the slack detection sensor.

The applicant of the present invention has also proposed a printer in which a processing device such as a cutter for cutting printed roll paper and a folding device for folding a printed roll paper is provided at a position on the discharge side of a print head. are doing. The cut position and the fold position of the roll paper are performed at positions designated by the user in advance on the screen of the host computer, and the CPU on the print control circuit board that receives the print data sent from the host computer performs printing. The drive timing of the cutter actuator and the folder actuator is controlled so that the sheet can be processed at the position specified by the data. In some cases, a plurality of printing units are stacked in multiple stages to form one printing device. In such a printing device, a solenoid valve that supplies ink to a sub-tank of each printing unit is provided on a conduit extending from an ink tank. Are provided one by one. This type of solenoid valve is also driven and controlled (excitation and demagnetization control) by the ASIC on the additional circuit board. The remaining amount of ink in the sub-tank is managed by the host computer, and the CPU on the print control circuit board that receives the print data sent from the host computer controls the opening of the solenoid valve at the time specified by the print data.

Therefore, the CPU on the print control circuit board is
And an ASIC (gate array) on the added circuit board
Are communicably connected. ASI on additional circuit board
C controls the roll paper motor based on the detection signal of the looseness detection sensor and drives and controls various motors and actuators such as solenoid valves based on instructions from the CPU.
In this case, the added actuators share the power supply unit of the added circuit board. Since the cutter and folder are operated with the paper feed stopped, the circuit board should be designed with a supply current value on the assumption that the roll paper motor and other actuators are not driven simultaneously.

[0006]

However, the roll paper motor is controlled independently of other actuators based on the detection signal of the slack detection sensor, and is not synchronized with the operation timing of the cutter or folder. For this reason, other actuators, such as a cutter motor, a folding machine motor, and a solenoid valve, may be driven simultaneously with the roll paper motor. In particular, since the roll paper is simply inserted into the paper tube, if the rolled paper hits the inner peripheral surface of the cassette and its frictional resistance increases, an abnormality may occur in which the paper tube only rotates and the roll paper does not rotate. . In this case, since the roll paper is not fed out only by the rotation of the paper tube, the roll paper motor continues to rotate. If the roll paper motor continues to be driven in this way, other actuators are always driven simultaneously with the roll paper motor unless this abnormality is avoided.

The current value of the circuit board is designed on the premise that the roll paper motor and other actuators are not driven simultaneously, so that the current flowing through the circuit board exceeds the design value. If the current is insufficient, there is a possibility that the current cannot be supplied to the actuator and the roll paper motor or another actuator cannot be driven. Even when a sufficient current is supplied, the substrate generates heat and the life of the element is shortened.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to minimize simultaneous driving of a plurality of actuators controlled by a drive control unit in accordance with an instruction from a main control unit. It is another object of the present invention to provide a printing apparatus that can minimize a problem caused by a current shortage caused by simultaneous driving of actuators.

[0009]

According to one aspect of the present invention, there is provided a main control unit for controlling a printing actuator and a plurality of control units provided for auxiliary functions other than a printing function. An actuator, a drive control unit that drives the plurality of actuators, and a printing apparatus provided with a power supply unit common to the plurality of actuators,
The drive control unit is communicably connected to the main control unit,
The drive control of the plurality of actuators is enabled by an instruction from the main control unit, and the gist of the main control unit is to control the drive timing of the actuators so that the plurality of actuators are not driven simultaneously. .

Here, the printing function is an indispensable function for printing. For example, in the case of an ink jet printer, an ink discharge function, a relative movement function between the print head and the print medium in the main scanning direction, a print head and the print function The relative movement function in the sub-scanning direction of the medium corresponds to this. The auxiliary function is any function that is added to enhance or add to the functions of the printing apparatus in addition to functions that are indispensable for printing. However, the main control unit may include control for an auxiliary function other than the printing function. Also,
Examples of the auxiliary function include a print medium processing function, a print medium conveyance auxiliary function, a cleaner function, an ink supply function, an optional function, and the like. The actuator is operated using electricity, and is a concept including not only a motor but also an electromagnetic valve. The same applies to the following claims.

According to the present invention, the main control unit controls the drive timing of the actuators by communicating with the drive control unit so that the plurality of actuators are not driven simultaneously. Therefore, since the plurality of actuators sharing the power supply unit are not driven simultaneously, a drawback that the current cannot be drawn due to the simultaneous driving and the actuator is not properly operated is avoided as much as possible.

According to a second aspect of the present invention, in the printing apparatus according to the first aspect, the main control section is provided on a print control board, and the drive control section and the power supply section are provided on a second control board. It is assumed that it has been established.

According to the present invention, in addition to the function of the first aspect, the second control board is provided separately from the print control board, so that the second control board is provided as a module according to the addition of functions. Since a control board can be supplied, it is not necessary to incorporate functions not used in the main control unit in advance.

According to a third aspect of the present invention, there is provided a main controller for controlling a printing actuator, a first actuator and a second actuator provided for auxiliary functions other than a printing function, and driving of the first actuator. A first drive control unit that drives the second actuator independently of the first actuator based on a signal from a detection unit that detects a state change when a state change occurs; In a printing apparatus provided with a power supply unit common to the first actuator and the second actuator,
The drive control unit and the second drive control unit are communicably connected to the main control unit, and the first drive control unit is capable of controlling the drive of the first actuator according to an instruction from the main control unit. The main control unit monitors the operation state of the second actuator by communicating with the second drive control unit, and adjusts the drive timing of the first actuator so that the first actuator and the second actuator are not simultaneously driven. The point is to control.

According to the present invention, the first drive control section controls the drive of the first actuator in accordance with an instruction from the main control section, and the second drive control section detects the state change when the state change occurs. The second actuator is driven independently of the first actuator based on the signal from the second actuator. The main control unit monitors the operation state of the second actuator through communication with the second drive control unit, and issues an instruction to the first drive control unit by communication so that the first actuator and the second actuator are not simultaneously driven. The drive timing of the first actuator is controlled. Therefore, since the first actuator and the second actuator sharing the power supply unit are not simultaneously driven, a drawback that the first and second actuators cannot be properly operated due to the simultaneous driving that current cannot be drawn is avoided as much as possible.

According to a fourth aspect of the present invention, there is provided a main controller for controlling a printing actuator, first and second actuators provided for auxiliary functions other than a printing function, and driving the first actuator. A first drive control unit that drives the second actuator independently of the first actuator based on a signal from a detection unit that detects a state change when a state change occurs; In a printing apparatus provided with a power supply unit common to the first actuator and the second actuator,
The drive control unit and the second drive control unit are communicably connected to the main control unit, and the first drive control unit is capable of controlling the drive of the first actuator according to an instruction from the main control unit. When the first actuator is operating, the main control unit controls the first actuator and the second actuator.
In order to control not to drive simultaneously with the actuator,
The gist of the present invention is to send a signal for inhibiting the driving of the second actuator to the second drive control unit.

According to the invention, the first drive control section controls the drive of the first actuator in accordance with an instruction from the main control section, and the second drive control section detects the state change when the state change occurs. The second actuator is driven independently of the first actuator based on the signal from the second actuator. When the first actuator is operating, the main control unit sends a signal prohibiting the driving of the second actuator to the second drive control unit so as to control the first actuator and the second actuator not to be driven simultaneously. . Therefore, since the first actuator and the second actuator sharing the power supply unit are not simultaneously driven, a drawback that the first and second actuators cannot be properly operated due to the simultaneous driving that current cannot be drawn is avoided as much as possible.

According to a fifth aspect of the present invention, there is provided a main control unit for controlling a printing actuator, first and second actuators provided for auxiliary functions other than a printing function, and driving of the first actuator. A first drive control unit that drives the second actuator independently of the first actuator based on a signal from a detection unit that detects a state change when a state change occurs; In a printing apparatus provided with a power supply unit common to the first actuator and the second actuator,
The drive control unit and the second drive control unit are communicably connected to the main control unit, and the first drive control unit is capable of controlling the drive of the first actuator according to an instruction from the main control unit. The first actuator is set to be driven in a state where the necessity of the operation does not increase anymore even when the stop state of the second actuator continues, and the main control unit controls the first drive control unit to When issuing an instruction to operate the first actuator, a signal for prohibiting the driving of the second actuator is sent to the second drive control unit so as to control the first actuator and the second actuator not to be driven simultaneously. That is the gist.

According to the invention, the first drive control section controls the drive of the first actuator in accordance with an instruction from the main control section, and the second drive control section detects the state change when the state change occurs. The second actuator is driven independently of the first actuator based on the signal from the second actuator. When instructing the first drive control unit to operate the first actuator, the main control unit controls the second actuator so that the first actuator and the second actuator are not simultaneously driven. To the second drive control unit.
Therefore, since the first actuator and the second actuator sharing the power supply unit are not simultaneously driven, a drawback that the first and second actuators cannot be properly operated due to the simultaneous driving that current cannot be drawn is avoided as much as possible.

According to a sixth aspect of the present invention, in the printing apparatus according to any one of the third to fifth aspects, the main control unit is provided on a print control board, and the first drive control unit and the first drive control unit are connected to each other. The gist is that the second drive control unit and the power supply unit are provided on the second control board.

According to this invention, in addition to the function of the invention described in any one of the third to fifth aspects, the second control board is provided separately from the print control board to add functions. Since the second control board can be supplied as a module corresponding to the above, there is no need to incorporate functions not used in the main control unit in advance.

According to a seventh aspect of the present invention, in the printing apparatus according to any one of the first to sixth aspects, the driving control unit is constituted by an ASIC. In the claims 2 to 4, the drive control unit refers to the first drive control unit and the second drive control unit.

According to the present invention, the drive control unit is provided with an ASIC.
However, since the main control unit has the initiative, selective drive control of the actuator is possible.
Multiple actuators (first and second actuators)
Can be avoided as much as possible.

According to an eighth aspect of the present invention, in the printing apparatus according to the third aspect, the first and second drive control units include an A
The main control unit includes a storage unit that stores a program, and a CPU that executes the program and is communicably connected to the ASIC. The ASIC receives an instruction from the CPU. First
The drive timing of the actuator can be controlled, and the CPU stops the second actuator when the second actuator is being driven when instructing the ASIC to operate the first actuator. And a timer means for monitoring the operation status of the second actuator by communicating with the ASIC to time the standby time, wherein the standby time measured by the timer means is set in advance. The gist is that when the set time is exceeded, the driving of the second actuator is prohibited.

According to the present invention, when the CPU issues an instruction to operate the first actuator to the ASIC, and the second actuator is being driven, the CPU waits until the second actuator stops to issue the instruction. And ASIC
The operation status of the second actuator is monitored by communication with the controller, and the standby time is measured by a timer. If the standby time measured by the timer means exceeds a preset time, the CPU prohibits the driving of the second actuator.

According to a ninth aspect of the present invention, there is provided the printing apparatus according to any one of the third to eighth aspects, wherein the printing apparatus is of a roll paper compatible type to which roll paper used as a print medium can be mounted. The second actuator is a roll paper motor driven to feed out the roll paper, the detecting means is a slack detecting means for detecting the slack of feeding the roll paper, and the roll paper motor is a slack detecting means for detecting the slack. When the slack of the roll paper is no longer detected by the means, the driving is performed, and when the slack of the roll paper is detected, the driving is stopped.

According to the present invention, in the operation of the invention described in any one of the third to eighth aspects, the roll paper motor as the second actuator is configured such that when the looseness of the roll paper is no longer detected by the looseness detecting means. It is driven, and when the looseness of the roll paper is detected, the drive is stopped. The roll paper motor and the first actuator are not simultaneously driven as much as possible.

According to a tenth aspect of the present invention, in the printing apparatus according to the ninth aspect, the first actuator is provided at a discharge side position of the print head for processing the roll paper after printing. The gist of the invention is that it is an actuator that operates the machine.

According to the present invention, in the operation of the invention described in any one of claims 3 to 8, the roll paper motor and the actuator for operating the processing device for processing the roll paper after printing are provided. They are not driven simultaneously as much as possible.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 6 is a schematic configuration diagram of the printing system. As shown in FIG. 1, the printing system includes a printer 1 and a host computer (PC) 2. In the printer 1 as a printing apparatus, a plurality of printing units 3 are vertically arranged in a plurality of stages (for example, two stages in the figure).
One is constituted by being piled up. Each printing unit 3 includes a printer unit 4 and a cassette unit 5, respectively. The printer unit 4 is a roll paper-compatible ink jet printer that prints on paper continuously fed from the roll paper 6 stored in the cassette unit 5. The printer 1 is connected to the host computer 2 via a communication cable 7, and executes print data sent from the host computer to print on paper. Printing unit 3 of the present embodiment
Has a built-in mechanism for cutting (cutting) or folding a printed roll paper at a cut position or a fold position designated by a user in advance.

The host computer 2 comprises a main body 2A, a display device 8, and input devices (keyboard, mouse, etc.) 9. The main body 2A has a CD-ROM as a recording medium.
By reading from the printer 10, a printer driver program is installed, and a printer driver is constructed. When a print command is operated using the input device 9, the printer driver converts the image data displayed on the screen 8 </ b> A into print data to be printed by the printer 1 and transfers the print data to the printer 1. In addition, a page layout setting screen is displayed on the screen 8A by the printer driver by operating the input device 9, and the user operates the input device 9 while viewing the setting screen to display one page. It is possible to input designated values such as length, top margin, bottom margin, cut position, and fold position.

FIG. 1 shows a schematic side view of the printing unit. The printing unit 3 is located at the rear end of the printer unit 4 (right end in the figure).
The cassette unit 5 is detachably connected to the control unit. The cassette section 5 is a storage section for roll paper, and is configured to be detached from the printer section 4 when the roll paper 6 is replaced.

The cassette section 5 comprises a storage section 5A and a lid section 5B.
Can be opened and closed in the direction of the arrow in FIG. Roll paper 6
The flange 11B of the paper tube 11 is attached to the drum-shaped paper tube 11 in a state where the shaft 11A is inserted through the shaft portion 11A, and a pair of front and rear support rollers 12, 13 disposed at the bottom of the storage portion 5A.
Are accommodated in a state where they are placed. The support roller has a driven roller 12 on the front side and a drive roller 13 on the rear side.
A support roller (drive roller) 1 is provided on the rear side of the bottom of the storage section 5A.
A roll paper motor 14 is provided as a second actuator for driving the motor 3. When the roll paper motor 14 is driven to rotate forward, a rotational force is transmitted from the support roller 13 to the flange 11B, and the roll paper 6 rotates in the direction in which the roll paper P is fed out. On the other hand, when the roll paper motor 14 is driven to rotate in the reverse direction, a rotational force is transmitted from the support roller 13 to the flange 11B, and the roll paper 6 rotates in a direction in which the roll paper P is wound.

At the front end of the storage section 5A, a paper feeder 15 is provided at a position corresponding to the transport path of the roll paper P sent from the roll paper 6. The paper feeding device 15 includes the storage unit 5.
A paper feed driven roller 17 and a paper feed drive roller 18 supported at the tip of a support arm 16 extending forward from A are fed to the printer unit 4 while being nipped by both rollers 17,18. .

The printer unit 4 includes, in order from the upstream side in the paper feeding direction, the paper feeding rollers 21 along the transport path of the roll paper P sent out while being nipped between the rollers 17 and 18 of the paper feeding device 15. A paper feed roller 22 and a paper discharge roller 23 are arranged. Each of the rollers 21 to 23 is a roll paper P
The lower roller is a driving roller and the upper roller is a driven roller. A platen 24 is disposed between the paper feed roller 21 and the paper feed roller 22 in the paper feed direction. Above the platen 24, a carriage 26 having a print head 25 on the lower surface is provided so as to be able to reciprocate in a main scanning direction (a direction perpendicular to the plane of FIG. 1). When the ink is ejected from the print head 25 when the carriage 26 moves, printing is performed on the upper surface of the roll paper P.

A slack forming device 30 is provided slightly below the transport path of the roll paper P between the roll paper 6 and the paper feeding device 15.
Is provided. The slack forming device 30 includes a rotating arm 32 having a guide roller 31 at a distal end. The rotating arm 32 is urged by a torsion coil spring 33 in a direction in which the guide roller 31 lifts the roll paper P from the lower surface. A detected portion 32A is protruded downward at a lower portion of the rotating arm 32, and a slack detecting sensor 34 as a detecting unit and a slack detecting unit is disposed at a position where the detected unit 32A can be detected. . The looseness detection sensor 34 is a U-shaped optical sensor having a detection recess.

As shown in FIG. 2A, the looseness detecting sensor 34 detects the detected portion 32A when the roll paper P is stretched.
Turns on when it enters the recess of the slack detection sensor 34 and blocks the detection light. On the other hand, as shown in FIG. 2B, the looseness detection sensor 34 has a required amount of looseness in the roll paper P, and the detected portion 32A comes out of the concave portion of the looseness detection sensor 34 and does not block the detection light. And off. Roll paper motor 1
4 is driven and controlled based on the detection signal of the looseness detection sensor 34.

A rotating plate 37 having a guide roller 36 at its tip is attached to the bottom of the storage section 5A by a spring (not shown) in a state where the guide roller 36 is in contact with the outer peripheral surface of the roll paper 6. It is provided in an energized state. An end detection sensor 38 composed of a reflective optical sensor is attached to the rotating plate 37, and detects a mark (not shown) written on the end of the roll paper P. End detection sensor 3
When the mark 8 is detected, the roll paper replacement time immediately before the roll paper 6 runs out is detected.

Between the paper feed roller 22 and the paper discharge roller 23, a folding device 41 as a processing device for forming a fold on the printed roll paper P, and the printed roll paper P into cut paper. And a cutter 42 as a processing device for performing cutting. The folding device 41 performs creasing by moving down in a width direction of the roll paper P (a direction perpendicular to the paper feeding direction) while the movable edge 41A moves down in a state where the movable edge 41A is pressed against the fixed edge 41B. On the other hand, the cutter 42 cuts the roll paper P by moving in the width direction of the roll paper P in a state where the movable blade 42B is cutably engaged with the fixed blade 42B. The folding process by the folding device 41 and the cutting process by the cutter 42 are continuously performed in the discharging process of the printed roll paper P. A dust box (not shown) for collecting cut chips is arranged below the cutter 42.

One ink tank (main tank) 44 is disposed at the top of the printer 1, and ink is distributed from the ink tank 44 to a sub tank 45 provided in the printer unit 4 of each printing unit 3. It has become. A plurality of (only one is shown in FIG. 1) pipelines 47 for sending ink to each sub-tank 45 are branched from a pipeline 46 extending from the ink tank 44, and ink is supplied to the sub-tank 45 at each branch location. Solenoid valve 48 for control
Are arranged. When the electromagnetic valve 48 is opened, ink is supplied to the sub tank 45 through the pipe line 47. The ink discharged from the nozzles of the print head 25 and consumed is supplied from the sub tank 45 to the carriage 2.
6 is replenished.

FIG. 3 shows an electrical configuration of the printing unit 3. The print unit 3 includes a print control board (circuit board)
51 and an auxiliary control board (circuit board) 52 as a second control board for an auxiliary function other than the printing function. The circuit board 51 is an existing board used for printing control in the printer unit 4,
3, for controlling the driving of the paper feed motor 54, the paper discharge motor 55, and the print head 25. On the other hand, the auxiliary control board 52 is for controlling the drive of the roll paper motor 14, the electromagnetic valve 48, the folding machine motor 56, and the cutter motor 57. Here, when the carriage motor 53 is driven, the carriage 26 moves in the main scanning direction via the timing belt 58. In addition, the folding machine motor 5
Reference numeral 6 denotes a roller for driving a timing belt (not shown) to which the movable edge 41A of the folder 41 is attached. The folding motor 56 is driven to move the movable edge 41A back and forth in the main scanning direction. The paper P is creased.
Also, the cutter motor 57 drives a timing belt (not shown) to which the movable blade 42A of the cutter 42 is attached. When the cutter motor 57 is driven, the movable blade 42A reciprocates once in the main scanning direction. As a result, the roll paper P is cut. The first actuator is constituted by the solenoid valve 48, the folder motor 56, and the cutter motor 57.

The circuit board 51 includes a CPU 60, a ROM 6
1, EEPROM 62, ASIC (gate array) 6
3, motor drive circuits 64-66 and head drive circuit 6
7 is implemented. The ASIC 63 controls the driving of each of the motors 53 to 55 via the motor driving circuits 64 to 66, and the print head 25 via the head driving circuit 67.
The driving voltage of the piezoelectric element prepared for each nozzle is controlled. The print data transferred from the host computer 2 is sent to the CPU 60 and the ASIC 63. CP
U60 reads out and executes the program data recorded in the ROM 61, performs various processes necessary for the print control, and stores the data to be stored obtained as the processing result in the EEPROM 6.
Stored in 2. The ASIC 63 interprets the print data as a command and develops the data, controls the ejection of the nozzles of the print head 25 via a head drive circuit 67, and controls the motor drive circuit based on signals from the CPU 60 and sensors (not shown). Each motor 53 via 64-66
To 55 are driven and controlled. The CPU 60 and the ROM 61
And the ASIC 63 constitute a main control unit.

On the other hand, an ASIC (gate array) 71 as a drive control unit, a motor drive circuit 7
2 to 74 and a solenoid drive circuit 75 are mounted. The ASIC 71 is connected to the CPU 60 so that bidirectional communication is possible. The ASIC 71 controls the drive of the roll paper motor 14 via the motor drive circuit 72 based on the detection signal of the looseness detection sensor 34. The ASIC 71 has a CPU 6
Based on the signal from 0, the motors 56 and 57 are driven and controlled via the motor driving circuits 73 and 74, and the solenoid 48A is controlled to be excited and demagnetized via the solenoid driving circuit 75.

The circuit boards 51 and 52 are connected to power supply circuits (power supplies) 77 and 78 as power supply units, respectively. Plugs 79, 79 provided on power supply lines extending from the power supply circuits 77, 78 are connected to a socket 80, and the socket 80 is connected to a power supply 81. In addition, power supply circuits 77 and 78 for each of the circuit boards 51 and 52 incorporated in the other printing units 3 are commonly connected to the socket 80. The power supply circuits 77 and 78 convert the AC of the power supply 81 into a DC of a predetermined voltage and supply necessary electric power to the circuit boards 51 and 52.

Here, the power setting value (power upper limit value) supplied to each of the circuit boards 51 and 52 is not a value sufficient to simultaneously drive all the actuators for each of the circuit boards 51 and 52. In the present embodiment, in the circuit board 51,
Since the processing machine motors 56 and 57 are driven only when the paper feed motor 54 and the paper discharge motor 55 are stopped, the total drive power always falls below the power set value. On the other hand, the circuit board 52
In this case, since the driving power of the roll paper motor 14 is relatively large, the roll paper motor 14
When any one of 8, 56 and 57 is driven simultaneously,
The total drive power exceeds the power set value. In order to prevent such a situation, the present embodiment employs control contents described later.

FIG. 4 shows the contents of control by various circuits mounted on the print control board 51 and the auxiliary control board 52, respectively. In the same figure, ASIC of the auxiliary control board
Is shown in a functional block diagram for each control content.

The ASIC 71 of the auxiliary control board 52 is C
A communication unit 83 for bidirectional communication with the PU 60, a folder motor 56, a cutter motor 57, and a solenoid 48;
A first drive control unit 84 for controlling the
And a second drive control unit 85 for controlling the drive of the second drive unit 4.

The print data from the host computer 2 is transmitted to the interface 8 mounted on the print control board 51.
7 to the CPU 60 and the ASIC 63. The ASIC 63 interprets the print data as a command to determine a fold position and a cut position, and the roll paper P is folded until the fold position or the cut position on the printed roll paper P is opposed to the folder 41 or the cutter 42. The control of the paper feed motor 54 is scheduled to be fed and stopped. When the CPU 60 receives a notification from the ASIC 63 that the paper feeding has been completed according to the schedule, it issues an instruction to the first drive control unit 84 of the ASIC 71 to drive the folder motor 56 or the cutter motor 57. Further, the CPU 60 performs a calculation for estimating the remaining amount of ink in the sub tank 45 based on the printing time and the like, and when determining that the remaining amount of ink has become less than the predetermined level, the first drive control unit 84 of the ASIC 71 sends the electromagnetic valve 48 To open the valve. Further, the CPU 60 receives from the ASIC 63 each time the rotation mode switches whether the rotation mode of the paper feed motor 54 is the paper feed direction or the paper discharge direction (roll paper take-up direction), and rotates the same to the second drive control unit 85 of the ASIC 71. Notify as direction signal.

The CPU 60 has a timer 88 and a counter 89. The timer 88 generates a pulse signal at regular time intervals based on the clock signal, and the pulse interval is set to, for example, 100 msec. The counter 89 is incremented every time a pulse signal is input from the timer 88 (every 100 msec.), And counts the elapse of a predetermined time. Further, the ROM 61 stores a control program shown in the flowchart of FIG. 5 for keeping the total drive power in the auxiliary control board 52 below the power set value.

On the other hand, in the ASIC 71, the first drive control unit 84 controls the folding unit motor 56, the cutter motor 57, and the solenoid 48A in accordance with an instruction from the CPU 60.
Is controlled to operate at the instructed timing.
Further, the second drive control unit 85 controls the drive of the roll paper motor 14 based on the detection signal of the looseness detection sensor 34. At this time, the control content differs depending on the rotation mode of the paper feed motor 54 received from the CPU 60 (hereinafter referred to as the paper feed rotation mode). That is, when the paper feed rotation mode is the paper feed direction, when the roll paper P is stretched by the paper feed and the slack detection sensor 34 is turned on, the roll paper motor 14 is driven to rotate forward to feed the roll paper. Then, the necessary slack in the roll paper P is secured and the slack detection sensor 3
When 4 is turned off, the normal rotation drive of the roll paper motor 14 is stopped, and the feeding of the roll paper is stopped. On the other hand, when the paper feed rotation mode is in the paper discharge direction (winding direction), when the roll paper P is slack and the slack detection sensor 34 is off, the roll paper motor 14 is driven to rotate in the reverse direction to roll the paper. Take up the paper. When the roll paper P is stretched and the slack detection sensor 34 is turned on, the roll paper motor 14
Is stopped, and the winding of the roll paper P is stopped.

Here, the second drive control unit 85 is controlled by the CPU 60
Only receives the instruction from the roll paper motor 14
Is driven only in the rotation direction (forward or reverse), and the drive timing of the roll paper motor 14 is determined based only on the signal of the slack detection sensor 34. Therefore, C
The PU 60 monitors the operation state of the roll paper motor 14 through communication with the second drive control unit 85, and prevents the total drive power of the substrate 52 from exceeding the set power value, that is, the roll paper motor 14 and other actuators 48. , 56, 57 are adjusted such that the other actuators 48, 56, 57 are not driven simultaneously.

Next, the contents of the actuator control routine for keeping the total drive power of the board 52 below the power set value will be described with reference to FIG. The CPU 60 executes the flowchart of FIG. 5 before instructing the first drive control unit 84 to drive the actuators 48, 56, 57. That is, the CPU 60 feeds the paper to the position where the fold position on the roll paper is opposed to the folder 41 and instructs the drive of the folder motor 56, or when the cut position on the roll paper is opposed to the cutter 42. This routine is executed prior to sending the instruction to drive the cutter motor 57. Further, the CPU 60 includes the sub tank 4
This routine is executed prior to instructing the solenoid valve 48 to open by judging that the remaining amount of ink in 5 is less than the predetermined level.

First, in step (hereinafter referred to as "S") 10, the count value N of the counter 89 is reset. S2
At 0, it is determined whether or not the roll paper motor 14 is rotating. That is, the CPU 60 communicates with the second drive control unit 85 to grasp the operation status of the roll paper motor 14, and determines whether or not the roll paper motor 14 is rotating (operating) at that time. If the roll paper motor 14 is not rotating (that is, if it is stopped), the process proceeds to S30, and S3
At 0, an instruction to drive the actuator 57 (48, 47) is issued. On the other hand, if the roll paper motor 14 is rotating, the process proceeds to S40.

In S40, the timer 88 outputs 100 msec.
It is determined whether there is a signal input at the pulse interval. That is, if there is a signal input after waiting for a signal input, S5
Go to 0.

In S50, the count value N of the counter 89 is incremented (N = N + 1). In S60, it is determined whether or not the count value N of the counter 89 has become "30" or more. That is, it is determined whether or not three seconds have elapsed since it was determined that the roll paper motor 14 was rotating. Here, "3 seconds" means the time required for the roll paper motor 14 to rotate forward from the state in which the roll paper P is stretched to the time when the roll paper P is stretched, that is, the looseness detection sensor 34 is turned on. This is a value (set time) T obtained by adding a predetermined margin to the time required to turn off the power supply. In other words, if the roll paper motor 14 is continuously driven for this time T, it should be stopped unless there is no abnormality. This value T is set to the same value T at the time of normal rotation and at the time of reverse rotation since the same concept holds even when the roll paper motor 14 rotates in the reverse direction. Of course, the set time T is not limited to 3 seconds, and an appropriate value can be set in consideration of the rotation speed of the roll paper motor 14, the winding diameter of the roll paper 6, and the like. For example, the set time can be variably set by measuring or predicting the remaining amount of roll paper. Roll paper motor 1
A different set time may be set for the forward rotation and the reverse rotation of No. 4.

Here, the abnormality exceeding the set time T means that, for example, the roll paper fed out (loose) into the cassette section 5 hits the inner peripheral surface of the cassette section 5 and the roll paper 6 is rotated by the frictional resistance. Paper tube 11 not fed out
There is a problem that only the rotational driving is continued.

If the count value N of the counter 89 is smaller than "30" in S60, the process returns to S20. Then, while the roll paper motor 14 is rotating, the processing of S20 and S40 to S60 is repeatedly executed until the count value N ≧ 30 is satisfied in S60. If the stop of the rotation of the roll paper motor 14 is confirmed in S20 before the count value N ≧ 30 is satisfied, the operation of the actuator is instructed in S30. Therefore, when the roll paper motor 14 is normal, the roll paper motor 14 stops before the elapse of 3 seconds, and an instruction to drive the actuator is issued after the stop. On the other hand, when the count value N of the counter 89 becomes “30” or more in S60, the process proceeds to S70.

In S70, the error type "roll paper error" is written in the EEPROM 62. And S80
In, error processing is performed. That is, the CPU 60
Instructs the ASICs 63 and 71 to stop the printing operation and the auxiliary function operation, thereby stopping the operation of the printer 1 and further notifying the host computer 2 that a "roll paper error" has occurred. This notification is received by the printer driver of the host computer 2, and the printer driver displays “Roll paper error” on the screen 8 A of the display device 8.

When such a "roll paper error" occurs, the user checks the state of the roll paper 6 and removes the cause of the error if the roll paper 6 is loosened.
Then, a return operation is performed to restart the operation of the printer 1.
The error written in the EEPROM 62 by this return operation is deleted. It should be noted that this actuator control routine includes the roll paper motor 14 and the actuators 48 and 5.
Only the processing for preventing simultaneous driving with any one of the first and second actuators 6 and 57 does not prevent simultaneous driving between the electromagnetic valve 48 and the motors 56 and 57 as the first actuator.

According to this actuator control routine, when the driving of the actuators 48, 56, 57 is instructed, the operation status of the roll paper motor 14 is first monitored before the instruction, and if the roll paper motor 14 is rotating, , And instructs driving of the actuators 48, 56 and 57. Therefore, simultaneous drive of the roll paper motor 14 and any one of the actuators 48, 56, 57 is substantially avoided. As a result, the roll paper motor 14
And that any one of the actuators 48, 56, and 57 is driven at the same time, thereby preventing the occurrence of problems such as insufficient current draw and slowing down of the operation speed of the actuator and the worst operation due to insufficient current. can do. Therefore, according to the present embodiment, the folder 41 and the cutter 42 always operate smoothly, and the solenoid valve 48 is always opened at the required opening degree, so that the required amount of ink is stored in the sub tank 45 at the required time. Replenished.

Since the folding machine motor 56 and the cutter motor 57 are both operated when the paper feed motor 54 is stopped, the slack of the roll paper P changes first during the operation of the motors 56 and 57. No, motor 56,5
It is highly unlikely that the drive of the roll paper motor 14 will be resumed during the operation after the operation of the roller 7 has been started. Also,
In the present embodiment, the opening timing of the solenoid valve 48 is also set while the paper feed motor 54 is stopped in order to more reliably avoid simultaneous driving of the solenoid valve 48 and the roll paper motor 14.

As described in detail above, according to the present embodiment,
The following effects can be obtained. (1) When instructing the actuators 48, 56, and 57 to be controlled by the auxiliary control board 52 to drive, the operation status of the roll paper motor 14 is monitored prior to this, and if the roll paper motor 14 is rotating. If the rotation is stopped, the driving of the actuators 48, 56, 57 is instructed. Therefore, the roll paper motor 14 and the actuator 4
A situation in which any one of 8, 56 and 57 is simultaneously driven can be substantially avoided. Therefore, current shortage due to simultaneous driving of the roll paper motor 14 and one of the actuators 48, 56, 57 is unlikely to occur, and the actuators 48, 56, 57 always operate properly. In addition, the folding and cutting of the roll paper P can be appropriately performed, and the sub tank 45 can be appropriately replenished with ink.

(2) Since the auxiliary control board 52 is provided separately from the print control board 51, the auxiliary control board 52 can be supplied as a module according to the addition of the function. It is not necessary to incorporate unused functions in the CPU 60, the ROM 61 and the ASIC 63 in advance.

(3) Since the actuators 48, 56, 57 are set to be driven while the paper feed is stopped, the driving of the roll paper motor 14 is restarted during the operation of the actuators 48, 56, 57. Can be prevented as much as possible. As a result, simultaneous driving of the roll paper motor 14 and any one of the actuators 48, 56, 57 can be more reliably avoided.

(4) If the roll paper motor 14 does not stop after the set time T has elapsed, it is determined that a roll paper error has occurred, the printer 1 is stopped, and a roll paper error is displayed on the screen 8A of the host computer 2. Accordingly, when an error occurs in the roll paper 6, the user is notified of the error together with the stoppage of the printer 1, so that the inconvenience of leaving the roll paper 6 with the abnormality occurring can be eliminated.

(5) A mounted on the auxiliary control board 52
Although providing a timer function in the SIC (gate array) 71 imposes a heavy load, the CPU 60 mounted on the print control board 51 and the ASIC 71 are connected for bidirectional communication, and the operation status of the roll paper motor 14 is determined by the CPU 60. It was monitored on the side. Therefore, the load of the logic circuit for monitoring is not applied to the ASIC 71.

(6) As the print control board 51, an existing one is used, and an AS for driving and controlling an actuator to be added is used.
Even with the configuration in which the auxiliary control board 52 on which only the IC is mounted is added, since the operation state of the roll paper motor 14 can be monitored, the roll paper motor 14 and other actuators 48,
Simultaneous drive with the actuators 56, 57 can be avoided as much as possible, and shortage of drive current for the actuators 14, 48, 56, 57 can be prevented as much as possible.

The embodiment is not limited to the above, but can be carried out in the following modes. In the above-described embodiment, it is assumed that the first actuator is operated when the paper feeding is stopped, and that the driving of the second actuator is not restarted during the operation of the first actuator once operated. In contrast,
In a configuration in which the second actuator may be driven during the operation of the first actuator, control for inhibiting the driving of the second actuator during the operation of the first actuator may be employed.

For example, it is assumed that the first actuator is operated even during paper feeding. The CPU 60 determines whether or not the roll paper motor 14 is rotating when instructing the operation of the first actuator. If the roll paper motor 14 is stopped, the first drive control unit 84 Instruct the operation of. The CPU 60 then controls the first drive control unit 8
4, the operation start signal and the operation end signal are sequentially received, and the time between the input of both signals is recognized as the operation of the first actuator. Then, by communicating with the second drive control unit 85, the CPU 60 monitors the state of the signal input from the looseness detection sensor 34 by the second drive control unit, and sends a notification that the looseness detection sensor 34 has been turned on to the second drive control unit 85. Even if received from the drive control unit 85, if the first actuator is operating at that time, a signal for inhibiting the drive of the roll paper motor 14 is transmitted to the second drive control unit 85.
Send to Therefore, the roll paper motor 14 is not driven during the operation of the first actuator. In this case, even if the driving of the roll paper motor 14 is prohibited, there is no particular problem since the driving start timing of the roll paper motor 14 is delayed only for a very short time when the operation of the first actuator ends.

In the above embodiment, while the second actuator (the roll paper motor 14) is being driven, an instruction to start driving the first actuator (48, 56, 57) is on standby until the second actuator is stopped. Conversely, when the driving of the first actuator (48, 56, 57) is instructed, an instruction to prohibit the driving of the second actuator is issued to the second drive control unit, and during the prohibition timing, the first driving control unit is instructed. A configuration for driving the actuator may be employed. In this case, since the first actuators (48, 56, 57) are driven when the paper feed is stopped, even if the driving of the first actuator is prioritized over the driving of the second actuator (14), the driving of the second actuator is stopped. There is no inconvenience that the driving is prohibited and the roll paper P is not supplied (fed out).

That is, the control program has the following contents. Prior to issuing a drive instruction to the actuators 48, 56, 57, the second drive control unit 85 is instructed to prohibit the drive of the roll paper motor 14 prior to this. And CPU6
0 indicates that the actuator 48,
An instruction is issued to drive 56 and 57 (S30). Further CPU
When the actuators 48, 56, and 57 complete the work and confirm that the driving is stopped, the 60 releases the prohibition of the driving of the roll paper motor 14 to the second drive control unit 85. Even if this control content is adopted, simultaneous driving of the roll paper motor 14 and any one of the other actuators 48, 56, 57 can be avoided as in the above-described embodiment, and the same effects as in the above-described embodiment can be avoided. Can be obtained.

The first actuator is not limited to being driven when paper feeding is stopped, but may be driven during paper feeding. For example, while the first actuator is driven, even if the paper is fed, the driving of the roll paper motor 14 is permitted to be continued for a short period of time enough to initially secure the slack so that the roll paper P does not stretch. This drive continuation permission time does not need to wait for near 3 seconds at which the required amount of slack is secured, and should be shorter than 3 seconds. Therefore, the operation start delay of the first actuator can be shortened as much as possible.

In the above-described embodiment, the configuration is such that the roll paper error is processed when the set time T (for example, 3 seconds) has elapsed. However, the configuration may be such that the error processing is eliminated. Although the looseness detection sensor 34 detects whether the required amount of looseness is ensured on and off, a sensor capable of continuously detecting the amount of looseness may be employed. For example, using a potentiometer capable of continuously detecting the amount of rotation of the rotating arm 32, the amount of slack is continuously detected. In this case, if the slack amount is, for example, half or more of the maximum slack amount, a control method of immediately stopping the second actuator and giving priority to starting driving of the first actuator can be adopted.

The auxiliary functions other than the printing function, that is, the functions realized by the operation of the actuators to be controlled by the auxiliary control board 52 are not limited to those of the above-described embodiment. For example, as an auxiliary function, a stapler, a punching member (a function mounted on a finisher by a laser printer), and the like can be given.

The second actuator is not limited to a configuration driven by the second drive control unit based on a signal from a detecting means for detecting a state change when a state change occurs. The second actuator may be driven and controlled by the ASIC 71 only based on an instruction from the main control unit (CPU 60), not based on a signal from the detection unit. For example, the configuration is such that the load on the paper feed motor 54 is detected and the tension of the roll paper P is indirectly detected,
When the tension of the roll paper P is detected, the roll paper motor 14 is driven and controlled by an instruction from the CPU 60 (main control unit). In this case, the CPU 60 controls the plurality of actuators 14, 47, 56, 57 so as not to be simultaneously driven.

The combination of the numbers of the first and second actuators can be set as appropriate. For example, there may be one first actuator and a plurality of second actuators.

The first actuator is not limited to a cutter or a folder. For example, printed roll paper P
It may be an actuator that operates a perforation processing device that puts a perforation into the hole.

The technical ideas grasped from the embodiment and other examples are described below. (1) In the invention according to claim 3, the main control unit communicates with the second drive control unit when instructing the first drive control unit to operate the first actuator. It is determined whether the actuator is operating or not, and if the second actuator is stopped, the first
Instructing the operation of the actuator to the first drive control unit,
When the second actuator is in operation, the second actuator is instructed to drive the first actuator to the first drive control unit after the second actuator is stopped. Error processing means for performing error processing if the operation is not stopped even if the time is exceeded (60, 61)
It is characterized by having.

(2) In the invention described in claim 3, the main control unit monitors the operation state of the second actuator by communicating with the second drive control unit, and the second actuator is not driven. It is characterized in that the first drive control unit is sometimes instructed to operate the first actuator.

(3) In the printing apparatus according to the above (8) or (1), the second actuator is a roll paper motor driven to feed out roll paper, and the detecting means is a roll paper motor. Slack detecting means for detecting slack in which the paper has been fed out, wherein the roll paper motor is driven when the slack detecting means does not detect slack in the roll paper, and the set time is determined by the slack detection. A value obtained by adding a predetermined margin to the time required for the roll paper motor driven by the means to detect the looseness of the roll paper no longer being detected by the means and until the drive is stopped after the looseness detector detects the looseness of the roll paper. It is characterized by being set to the above time.

(4) The printing apparatus according to the ninth aspect, wherein a plurality of units each having a printer unit and a cassette unit for storing roll paper are provided, wherein the first actuator is provided from an ink tank. It is a solenoid valve for controlling the supply of ink to a sub-tank provided in each printing unit.

(5) The printing apparatus according to claim 10, wherein the processing device is a cutter for cutting roll paper.
The first actuator is a cutter actuator for operating the cutter.

(6) In the printing apparatus according to the item (10), the processing device may be a folding device for making a fold on the roll paper, and the first actuator may be a folding device actuator for operating the folding device. Features.

[0084]

As described in detail above, according to the first to tenth aspects of the present invention, a plurality of actuators controlled by the drive control unit on the second control board in accordance with an instruction from the main control unit are simultaneously operated. Driving can be avoided as much as possible, and problems caused by insufficient current caused by simultaneous driving of the actuators can be prevented as much as possible.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view of a printing apparatus according to an embodiment.

FIG. 2 is a side sectional view showing a drive control system of the roll paper motor.

FIG. 3 is a schematic diagram illustrating an electrical configuration of the printing apparatus.

FIG. 4 is a block diagram illustrating an electrical configuration of the printing apparatus.

FIG. 5 is a flowchart of an actuator control routine.

FIG. 6 is a perspective view of a printing system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Printer as printing apparatus 2 ... Host computer 6 ... Roll paper 10 ... Print head 14 ... Roll paper motor as actuator and 2nd actuator 22 ... Discharge motor as printing actuator 25 ... Print head as printing actuator Reference numeral 34 denotes a slack detection sensor as a detecting unit and a slack detecting unit 41 a folding unit as a processing unit 42 a cutter as a processing unit 48 an electromagnetic valve as an actuator and a first actuator 51 a printing control board 52 a second Auxiliary control board as control board 53 Carriage motor as printing actuator 54 Paper feed motor as printing actuator 56 Folder motor as actuator and first actuator 57 Actuator and first actuator Cutter motor 60: CPU constituting a main control unit 61: RO constituting a main control unit and a storage unit
M 63: ASIC constituting the main control unit 71: ASIC constituting the drive control unit, the first drive control unit, and the second drive control unit 78: a power supply circuit (power supply) as a power supply unit 84: first drive control Unit 85: Second drive control unit 88: Timer constituting timer means 89: Counter constituting timer means P: Roll paper as print medium

Claims (10)

[Claims] A main control unit for controlling a printing actuator; a plurality of actuators provided for auxiliary functions other than a printing function; a drive control unit for driving the plurality of actuators; In a printing apparatus provided with a common power supply unit, the drive control unit is communicably connected to the main control unit,
The drive control of the plurality of actuators is enabled by an instruction from the main control unit, and the main control unit controls the drive timing of the actuators so that the plurality of actuators are not driven simultaneously. Printing device. 2. The printing apparatus according to claim 1, wherein the main control section is provided on a print control board, and the drive control section and the power supply section are provided on a second control board. Printing device. 3. A main control unit for controlling a printing actuator; first and second actuators provided for auxiliary functions other than a printing function; and a first drive control unit for driving the first actuator. ,
A second drive control unit that drives the second actuator independently of the first actuator based on a signal from a detection unit that detects a state change when a state change occurs, and is common to the first actuator and the second actuator. Wherein the first drive control unit and the second drive control unit are communicably connected to the main control unit, and wherein the first drive control unit receives an instruction from the main control unit. The main control unit monitors the operation status of the second actuator by communicating with the second drive control unit, and controls the first actuator and the second actuator. A driving timing of the first actuator is controlled so that the first and second actuators are not simultaneously driven. 4. A main control unit for controlling a printing actuator; a first actuator and a second actuator provided for auxiliary functions other than a printing function; and a first drive control unit for driving the first actuator. ,
A second drive control unit that drives the second actuator independently of the first actuator based on a signal from a detection unit that detects a state change when a state change occurs, and is common to the first actuator and the second actuator. Wherein the first drive control unit and the second drive control unit are communicably connected to the main control unit, and wherein the first drive control unit receives an instruction from the main control unit. The main control unit controls the first actuator and the second actuator so as not to be simultaneously driven when the first actuator is operating. And a signal for prohibiting the driving of the second actuator is sent to the second drive control unit. 5. A main controller for controlling a printing actuator, first and second actuators provided for auxiliary functions other than a printing function, and a first drive controller for driving the first actuator. ,
A second drive control unit that drives the second actuator independently of the first actuator based on a signal from a detection unit that detects a state change when a state change occurs, and is common to the first actuator and the second actuator. Wherein the first drive control unit and the second drive control unit are communicably connected to the main control unit, and wherein the first drive control unit receives an instruction from the main control unit. Thus, the drive control of the first actuator is enabled, and the first actuator is set to be driven in a state where the necessity of the operation does not further increase even if the stop state of the second actuator continues. The main control unit, when instructing the first drive control unit to operate the first actuator, includes the first actuator and the second actuator. Doo is to control so as not to drive simultaneously printing apparatus a signal for prohibiting the driving of the second actuator and wherein the sending the second drive controller. 6. The printing apparatus according to claim 3, wherein the main control unit is provided on a print control board, and wherein the first drive control unit, the second drive control unit, The printing apparatus, wherein the power supply unit is provided on the second control board. 7. The printing apparatus according to claim 1, wherein the drive control unit is configured by an ASIC. 8. The printing apparatus according to claim 3, wherein the first and second drive control units are configured by an ASIC, and the main control unit executes a storage unit that stores a program and executes the program. And a CPU communicably connected to the ASIC. The ASIC is capable of controlling a drive timing of a first actuator in accordance with an instruction from the CPU. If the second actuator is being driven when issuing an instruction to operate the one actuator, the system waits until the second actuator stops to issue the instruction, and communicates with the ASIC to operate the second actuator. A timer means for monitoring the standby time and measuring the standby time, wherein the standby time measured by the timer means is set in advance. A printing apparatus, wherein when the time is exceeded, the driving of the second actuator is prohibited. 9. The printing apparatus according to claim 3, wherein the printing apparatus is a roll-paper-compatible printing apparatus on which roll paper used as a print medium can be mounted. A roll paper motor driven to feed out the roll paper, wherein the detection means is a slack detection means for detecting a slack in which the roll paper is fed, and the roll paper motor is a slack of the roll paper by the slack detection means. A printing apparatus, which is driven when detection is stopped, and is stopped when looseness of roll paper is detected. 10. The printing apparatus according to claim 9, wherein
The printing apparatus according to claim 1, wherein the first actuator is an actuator that operates a processing device provided at a discharge side of a print head in order to process the roll paper after printing.