JPH08132618A - Printer - Google Patents

Abstract

PURPOSE: To obtain a printer capable of reducing power consumption by providing a control means controlling a first pulse generating means generating the first pulse applied to a heater and a second pulse generating means generating the second pulse applied to a sub-heater so that both applications of the first and second pulses are not overlapped each other. CONSTITUTION: The supply of a current to the sub-heater provided to a recording head is controlled by a sub-heater control circuit and, when the power supply of a printer is closed or the operation enviromnental temp. of the printer is low, the internal temp. of the head is raised and, when the internal temp. of the head becomes temp. necessary for emitting ink, the supply of a current to the sub-heater is stopped. When the temp. of the head is raised by recording operation, the head is cooled by the cooling fan provided in the printer. This operation is realized by detecting the temp. sensor in the head by a CPU-E161 and transmitting the detection data to a GAE 165 and controlling the sub-heater and a fan by the sub-heater control circuit provided to the GAE 165.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer device, and more particularly to a printer device having a recording head according to the ink jet system.

[0002]

2. Description of the Related Art A recording head mounted on a conventional inkjet printer has a recording width which is considerably smaller than a recording width of a recording sheet. Therefore, the recording head is provided inside the printer so as to face the recording paper, and serial printing is performed by moving the carriage carrying the recording head to the left and right.

Many types of ink jet type recording heads and recording control methods have been proposed up to now, but the so-called full line head in which the recording width of the recording head corresponds to the width of the recording sheet. There are few configurations, and there is no example of performing sub-heater control in a color printer having a plurality of such full line heads.

[0004]

However, since the sub-heater is generally composed of a resistor and consumes a large amount of electric current, a sub-heater control suitable for reducing the power consumption of the entire apparatus is desired. Particularly, in the case of the color printer having a plurality of full line heads described in the prior art, the time for energizing the nozzle heater is long and the current capacity consumed by one head is very large, and the current consumption accompanying this is also very large. It can be said that the need to reduce the maximum power consumption is even greater.

In a line printer, for example, the resistance value of the nozzle heater is 100Ω, the applied voltage is 24V, the energization duty is 40%, and the simultaneous energizing nozzle has 8 LSIs in the LSI equipped with the nozzle heater and 11 LSIs in the recording head.
Power consumption is 24 × 24/100 × 0.4 × 8 × 11 = 203 W.

On the other hand, if the power consumption of the sub-heater is 70Ω for one LSI and the applied voltage is 24 V, which is the same as that of the nozzle heater, then 24 × 24/70 × 11 = 90 W. Therefore, the nozzle heater and sub heater are turned on at the same time.
Then, the power consumption becomes about 300 W, and the power consumption increases by about 50% as compared with the case where only the nozzle heater is driven.
For this reason, it is necessary to take measures such as increasing the diameter of the power cable for supplying the necessary power to one head and increasing the number of cables. In addition, noise is more likely to occur when the current is large, so this measure is also necessary.
Furthermore, since the color printer has four recording heads, if the sub-heaters are driven simultaneously with the four recording heads, the total power consumption will be 500 W or more. Such an increase in power consumption causes a problem that the production cost of the printer device is significantly increased and the size of the product is increased.

Therefore, from the viewpoint of reducing power consumption,
Accurate ON / OFF control of the sub-heater in consideration of the energization time of the nozzle heater is desired. The present invention has been made in view of the above-mentioned conventional example, and it is possible to accurately turn on / off the sub-heater.
An object of the present invention is to provide a printer device capable of reducing power consumption by FF control.

[0008]

In order to achieve the above object, the printer device of the present invention has the following configuration. That is, a printer device for recording on a recording medium using a recording head having a sub-heater and a heater for recording by a recording element, wherein a first pulse applied to the heater for recording by the recording head is generated. Control means for controlling the first pulse generating means, the second pulse generating means for generating the second pulse to be applied to the sub-heater, and the application of the first and second pulses to the recording head so that they do not overlap. And a printer device characterized by having.

[0009]

With the above arrangement, the present invention controls so that the first pulse applied to the heater and the second pulse applied to the sub-heater for printing by the print head do not overlap with the print head. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a circuit configuration of a color printer apparatus having a full line recording head according to an ink jet system which is a typical embodiment of the present invention. As shown in FIG. 1, a circuit of the printer device includes a formatter unit 110 for controlling communication with a host computer (hereinafter referred to as a host), expansion into a bit map memory, various controls of a print head, and a conveyance motor. , An engine unit 150 that controls various sensors.

This is because the formatter unit 110 has a circuit configuration corresponding to various applications (for example, a normal printer, a facsimile machine or a copying machine) in consideration of the difference in the interface with the host and the difference in the image processing method. This is because the engine section 150 aims at reducing the difference depending on the application and reducing the cost by standardizing it so that any application can be supported.

In the present embodiment, the functional division of the formatter unit 110 and the engine unit 150 is determined as follows. (1) Formatter function-Interface with the host-Analysis of commands (commands) sent from the host-Expansion of recorded data into bitmap memory based on the above commands-Control of operation panel-Control box (described later) Control-Interface with engine unit 150-Option control: control of recording paper supply unit (option IN), control of recording paper discharge unit (option OUT) (2) engine unit function-interface with formatter unit 110-ink supply system Control of recording paper control system Control of data transfer to recording head Control of heater energization to recording head Temperature control Clock function Backup memory function Recording paper width detection function To realize these functions, Circuit configuration is required.

In FIG. 1, a formatter unit 110 includes a CPU-F111 for executing a control program, a ROM 112 for storing the control program, a system RAM 113 required for executing the program, an IFCNT 114 required for communication with the host, and a host. Bitmap RAM for recording the bit map data of the transmitted recording contents
115, a dedicated circuit GAF 116 that controls the bitmap RAM 115 and communicates with the engine unit 150, an emulation RO for analyzing print data from the host
M (E-ROM) 117, character generator (CG-ROM) 118 for converting character code data into bitmap data, memory card 119 used as an external storage device, IO port to interface with the above-mentioned optional function 120, an operation panel 1 including a user interface and keys for performing various operations and an LCD for displaying messages from the device
21.

Reference numeral 122 denotes a control box which serves as a user interface when performing stand-alone image recording using the image data stored in the memory card 119 without connecting the printer device to a host and performing various instruction operations. Is. Further, 123 and 124 are input / output interfaces (option IN, option OUT) of various additional devices which are optionally connected to the printer device. In this embodiment, the option IN 123 is connected to a recording paper supply unit described later, and the option OUT 124 is connected to a recording paper discharge unit described later.

Although the details will be described later, the CPU-F111 is
Based on the information about the recording sheet transferred from the engine unit 150 that the GAF 116 receives, the IO port 1
The recording paper supply unit and the recording paper discharge unit are controlled via 20. Next, the engine unit 150 will be described. As shown in FIG. 1, the engine unit 150 is composed of an engine circuit 160 whose main purpose is to convey recording paper and an engine circuit 180 whose main purpose is to control the recording head drive.

The engine circuit 150 has a ROM for storing a control program, a RAM used as a work area for executing the control program, and a port (PORT) for inputting a sensor described later.
A CPU-E161 that includes an A / D converter that converts an analog input from the port to digital data, and executes a control program to perform various control processes;
RAM1 used for executing the program of PU-E161
62, EEP for recording unevenness correction data of the recording head
It is composed of a ROM 163, a clock (RTC) 164, and a dedicated circuit GAE 165 for performing test record data creation and communication with the formatter unit 110. Further, 171 is a sensor that detects the position of the recording sheet, and 172 is a conveyance motor that conveys the recording sheet.

The engine circuit 180 is used for the recording head 1.
90 drive control (specifically, includes an operation of generating a pulse signal for heating a nozzle heater provided in each nozzle of the print head based on an input image signal), and of the print head 190 when the print operation is not performed. Dedicated for controlling the motor 191 for moving the recording head and the cap (not shown) to cap the ink ejection nozzles, and for controlling the sensor 192 for detecting the position of the cap and the position of the recording head. The circuit GAE181 is included. In addition, a sub-heater (not shown) made of a resistor is incorporated in the print head 190 in order to keep the internal temperature of the print head constant.

FIG. 2 shows the printer device 10 described with reference to FIG.
It is a side sectional view showing a schematic structure of 0. FIG. 2 shows a configuration in which a control box 122, a recording paper supply unit 130 that uses roll paper as recording paper, and a recording paper discharge unit 131 that includes a cutter that cuts the rolled paper after recording are incorporated in the printer device 100. Shows. In addition, the engine circuit 160 is mounted on the device as shown in FIG.
It is divided into 60a and 160b.

Further, 190Y is a full line recording head (Y head) for recording using yellow (Y) ink, and 190M is a full line recording head (M for recording using magenta (M) ink. Head), 190
C is a full line recording head (C head) for recording using cyan (C) ink, and 190K is black (K).
Is a full-line recording head (K head) that performs recording using the above ink, and is arranged along the conveyance direction of the recording paper.

Further, 171a is a recording paper supply unit 130.
A signal (TOF1) by detecting the leading edge of the recording paper from the black lines added at regular intervals to the roll paper supplied from
The sensor 171b detects the leading edge of the recording paper from the black line of the roll paper after the recording is finished, and outputs a signal (TOF
A sensor 173 for generating 2) is a recording paper transport unit that incorporates a transport motor 172, rotates the drive motor 172, and transports the recording paper by a transport belt (not shown).

The printer device of the present embodiment having such a configuration can print out at a speed of up to 150 mm / sec. Next, sub-heater control in the printer device having the above configuration will be described. In the present embodiment, the circuit that controls the recording head 190 is the GAE 181, as described above, and the sub-heater control circuit that controls the sub heater in the recording head 190, which is a feature of the present embodiment, is incorporated in the GAE 181.

First, the basic concept of sub-heater control will be described. When a recording head is executing a recording operation, if the sub-heater of the recording head is turned off, the current flowing through one recording head is sufficient for the nozzle heater. On the other hand, when the sub heater is ON,
If the printing operation is stopped, the current consumption for the print head is the current for the sub heater. In this way, by controlling the recording head so that the recording operation and the subheat have an exclusive relationship, the maximum current can be suppressed to a small value.

The recording operation is performed when the recording paper is supplied from the recording paper supply unit 130 and passes under the four recording heads 190Y, 190M, 190C and 190K shown in FIG. The recording timing is the horizontal synchronization signal (HSYN) output every time the recording paper moves by one line.
C signal) is used as a reference. When the recording is completed, the recording paper is stored in the recording paper discharge section 131.

FIG. 3 is a circuit diagram showing the detailed structure of the sub-heater control circuit. With this sub-heater control circuit,
Controls energization to the sub-heater provided in the recording head,
The internal temperature of the head is raised when the power source of the device is turned on or when the operating environment temperature is low. When the internal temperature of the head reaches a temperature required for ejecting ink, the power supply to the sub-heater is stopped. Further, when the temperature of the head rises due to the recording operation, the head is cooled by a cooling fan (not shown) provided in the printer device. This operation is realized by the CPU-E161 detecting a temperature sensor (not shown) in the head, transferring the detection data to the GAE165, and the sub-heater control circuit in the GAE165 controlling the sub-heater and the fan.

In FIG. 3, 200C, 200M, 20
0Y and 200K are CPU-E161 to GAE1 respectively
Sub heat signal (K-S
UBHEAT, C-SUBHEAT, M-SUBHEA
T, Y-SUBHEAT) is inputted to one input terminal, AND circuits 201 to 206 are flip-flops, 20
7 is a counter and 208 is a pulse generation circuit.

The pulse generation circuit 208 generates a pulse signal at a cycle of 78 μsec. On the other hand, the counter 207 counts time based on the reference clock signal (CK) that is reset and input by the HTTRG * signal described later,
The pulse generation circuit 208 is triggered by the BL * signal so that the pulse generation circuit 208 generates pulses at a cycle of 78 μsec. Each of the flip-flops 203 to 206 uses the pulse generated by the pulse generation circuit 208 as a clock and uses the sub-heat basic pulse (K-SUBH, C-SUB).
H, M-SUBH, Y-SUBH) trigger signals (K-SHARE, C-SHARE)
A, M-SHAREA, Y-SHAREA). These trigger signals are set to 78 μm so that the sub-heat timing for each recording head does not overlap.
Delay by sec.

Next, the operation of the sub heater circuit shown in FIG. 3 will be described with reference to the time chart showing the control sequence of the sub heater shown in FIG. Here, the time for energizing the heater of the recording head is the recording pulse signal (K-FAREA, C-FA) for ink ejection for each ink color to be recorded.
REA, M-FAREA, Y-FAREA) is ON, and the time to energize the sub heater is the sub heat basic pulse (K-SUBH, C-SUBH, M-).
SUBH, Y-SUBH) is ON.

Now, considering the maximum printing speed of the printer, the period of the HTTRG * signal synchronized with the horizontal synchronizing signal (HSYNC) is 470 μsec at the shortest, and the energization time of one head is 116 μsec. This signal HTTRG * 4
Colors are turned on sequentially. The control of the sub heater is basically started by the CPU-E 161 setting the sub heat signal in the register of the GAE 165.

Sub heat signal (K-SUBHEAT, C
-SUBHEAT, M-SUBHEAT, Y-SUBH
When EAT is turned on, the sub-heat basic pulse (Fig. 4
K-SUBH, C-SUBH, M-SUBH, Y-S
UBH) is sequentially turned on. At this time, the recording pulse (K
-FAREA) is ON, if the sub-heat basic pulse (K-SUBH) is OFF, the recording head 1
The current flowing to 90K is the amount of current for the nozzle heater.
On the other hand, if the sub-heat basic pulse (K-SUBH) is turned on while the recording pulse (K-FAREA) is off, the sub-heater current is sufficient.

Further, since the sub-heater is provided in the recording head, if the energizing time for one time is too long, the ink in the recording head foams and bubbles are generated in the ink chamber, and the ink is not ejected during the recording operation. May occur. Therefore, the energization time has an optimum value, which is generally shorter than the pulse width of the recording pulse. In consideration of the above, the four recording heads 190Y, 190M, 190C,
When applied to 190K, the energization control of the sub-heater when sequentially controlled by four recording heads is as follows.

That is, one-sixth of the period of the horizontal synchronizing signal (HSYNC) is used as a basic pulse for sub-heat (K in FIG. 4).
-SUBH, C-SUBH, M-SUBH, Y-SUB
H), and normally a recording pulse (K-FAREA, C-FARE in FIG. 4) for ejecting ink for each ink color to be recorded.
A, M-FAREA, Y-FAREA) sequentially (KCM
Y order) Give. On the other hand, for the sub-heat basic pulse, the next pulse (Y-SUBH) is synchronized with the horizontal sync signal (HSYNC) during the recording operation, without applying the first two pulses (C-SUBH, M-SUBH). Finally, the recording head 190Y for recording is applied, K-SUBH of the sub-heat basic pulse is applied to the recording head 190K, and C-SUBH is further applied to the recording head 190C for second recording. Then M-SU
BH is applied to the recording head 190M where the third recording is performed. After that, the sub-heat basic pulse is sequentially applied similarly to this.

More specifically, as shown in FIG. 4, the sub-heater is C-SUBH → M-SUBH → Y- during normal energization.
Turn on in the order of SUBH → K-SUBH. During acceleration / deceleration of the printer recording speed and during high-speed printing, the counter is reset by the HTTRG * signal, and according to the above-mentioned idea, C-SUB
Without outputting H and M-SUBH, energization is performed in the order of K-SUBH → C-SUBH → M-SUBH from the next Y-SUBH. With this arrangement, when the nozzle heaters of one recording head are energized, the sub heaters are not energized at the same time, and the sub heaters of the four recording heads can be uniformly energized, and the maximum current is further increased. Can be lowered. Further, during acceleration / deceleration or low speed recording (corresponding to normal energization in FIG. 4), the sub-heater is energized continuously, and during acceleration / deceleration, the sub-heater is energized even after energization of the nozzle heater is completed. The head temperature can be controlled at high speed.

Next, other control signals shown in FIGS. 3 to 4 will be described. In the case of an inkjet recording head, an operation sequence called a recovery operation is necessary to prevent the nozzles from being clogged. This is an operation for eliminating the factors that make ink ejection unstable, such as the ink in the nozzles condensing or dust or the like sticking to the ink ejection ports. Specifically, operations such as pressurizing and circulating the ink in the recording head or forcibly ejecting ink from all the nozzles are performed. This recovery operation period is shown by the PGO shown in FIGS. 3 and 4.
P signal. As shown in FIG. 4, when the PGOP signal is ON, that is, during the recovery operation, energization of the sub heater is interrupted. This is because all nozzle heaters are energized by the recovery operation, so that the temperature inside the print head rises rapidly. Therefore, by interrupting the power supply to the sub-heater, the temperature change is delayed and the thermal shock given to the recording head is alleviated.

Therefore, according to this embodiment, since the energization of the nozzle heater by the recording operation of the recording head and the energization of the sub-heater which consumes a large current of the recording head are controlled so as to be exclusive, the consumption of the recording operation is consumed. The electric power can be kept small. As a result, the diameter of the current supply cable can be reduced, and the power of the printer can be covered by the small-capacity power supply unit, so that the size of the device can be reduced.

Although the circuit configuration in which the formatter section and the engine section are separated is described in the present embodiment, the present invention is not limited to this, and an integrated printer may be used, for example. Further, it goes without saying that the present invention is not limited by the numerical values of various constants shown in the above description, for example, the value of the period of the horizontal synchronizing circuit.

Further, the recording order in this embodiment is black, cyan, magenta and yellow, but the present invention is not limited to this, and it goes without saying that other orders may be used. The present invention is provided with a means (for example, an electrothermal converter or a laser beam) that generates thermal energy as energy used for ejecting ink, particularly in the inkjet recording system, and the state of the ink is determined by the thermal energy. Although the printing apparatus of the type that causes a change has been described, such a method can achieve high density and high definition of recording.

Regarding the typical structure and principle thereof, see, for example, US Pat. Nos. 4,723,129 and 4740.
What is done using the basic principles disclosed in 796 is preferred. This method can be applied to both the so-called on-demand type and continuous type, but especially in the case of the on-demand type, liquid (ink)
By applying at least one drive signal to the electrothermal converter arranged corresponding to the sheet or liquid path in which the liquid crystal is held, which corresponds to the recorded information and causes a rapid temperature rise exceeding film boiling. Since the electrothermal converter is caused to generate heat energy to cause film boiling on the heat-acting surface of the recording head, as a result, bubbles in the liquid (ink) corresponding to the drive signal in a one-to-one relationship can be formed. It is valid. The liquid (ink) is ejected through the ejection openings by the growth and contraction of the bubbles to form at least one droplet. It is more preferable to make this drive signal in a pulse shape, because bubbles can be grown and contracted immediately and appropriately, and thus a liquid (ink) with excellent responsiveness can be achieved.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed. As the structure of the recording head, in addition to the combination structure (straight liquid flow path or right-angled liquid flow path) of the ejection port, the liquid path, and the electrothermal converter as disclosed in the above-mentioned specifications, a heat acting surface is also provided. A configuration using US Pat. No. 4,558,333 and U.S. Pat. No. 4,459,600, which disclose a configuration in which is arranged in a bending region, is also included in the present invention. In addition, Japanese Unexamined Patent Application Publication No. Sho 5-5 discloses a configuration in which a common slot for a plurality of electrothermal converters is used as a discharge portion of the electrothermal converters.
Japanese Patent Application Laid-Open No. 9-123670 and Japanese Patent Application Laid-Open No. Sho 5 (1993) -58
The configuration may be based on Japanese Patent Publication No. 9-138461.

Furthermore, a full line type recording head having a length corresponding to the width of the maximum recording medium which can be recorded by the recording apparatus is obtained by combining a plurality of recording heads as disclosed in the above-mentioned specification. Either of the structure satisfying the requirement or the structure as one recording head integrally formed may be used. In addition, the ink is integrated into the replaceable chip-type recording head, or the recording head itself, which can be electrically connected to the apparatus main body and can supply ink from the apparatus main body by being attached to the apparatus main body. A cartridge-type recording head provided with a tank may be used.

Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided as a configuration of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. . Specific examples thereof include capping means, cleaning means, pressurizing or suctioning means for the recording head, preheating means using an electrothermal converter or another heating element or a combination thereof, and recording. It is also effective to perform a stable recording by performing a preliminary discharge mode in which another discharge is performed.

Further, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but the recording head may be integrally formed or a plurality of combinations may be used. Alternatively, the device may be provided with at least one of full-color mixed colors. In the embodiments of the present invention described above, the ink is described as a liquid, but an ink that solidifies at room temperature or lower, or one that softens or liquefies at room temperature may be used, or an ink jet system may be used. Generally, the temperature of the ink itself is adjusted within the range of 30 ° C to 70 ° C to control the temperature of the ink so that the viscosity of the ink is within the stable ejection range. Anything can be used.

In addition, in order to positively prevent the temperature rise due to thermal energy from being used as the energy for changing the state of the ink from the solid state to the liquid state,
Alternatively, in order to prevent the ink from evaporating, an ink that solidifies in a standing state and liquefies by heating may be used. In any case, by applying heat energy, such as ink that is liquefied by applying heat energy according to the recording signal and liquid ink is ejected, or that begins to solidify when it reaches the recording medium. The present invention can be applied to the case where an ink having a property of being liquefied for the first time is used. In such a case, the ink is retained as a liquid or solid in the recesses or through holes of the porous sheet as described in JP-A-54-56847 or JP-A-60-71260. It may be configured to face the electrothermal converter. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition, as a form of the recording apparatus according to the present invention, in addition to the one provided integrally or separately as an image output terminal of information processing equipment such as a computer, a copying apparatus combined with a reader or the like, and further transmission / reception It may take the form of a facsimile machine having a function. The present invention may be applied to a system including a plurality of devices or an apparatus including one device. Furthermore, it goes without saying that the present invention can also be applied to the case where it is achieved by applying a program to a system or an apparatus.

[0044]

As described above, according to the present invention, the first pulse applied to the heater and the second pulse applied to the sub-heater for recording by the recording head overlap the recording head. Since it is controlled not to do so, there is an effect that the maximum current applied to the recording head can be suppressed low.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of a color printer apparatus having a full-line recording head according to an inkjet method, which is a typical embodiment of the present invention.

FIG. 2 is a side sectional view showing a schematic configuration of the printer device 100 described in FIG.

FIG. 3 is a circuit diagram showing a configuration of a sub heater circuit.

FIG. 4 is a time chart showing an operation sequence of a sub heater circuit.

[Explanation of symbols]

 110 Formatter part 111 CPU-F 120 IO port 130 Recording paper supply part 131 Recording paper discharge part 150 Engine part 171a, 171b Sensor 200C, 200M, 200Y, 200K AND circuit 201-206 Flip-flop 207 Counter 208 Pulse generation circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location B41J 3/04 104 K (72) Inventor Hideaki Kishida 5540-11 Sakate-cho, Mizukaido, Ibaraki Prefecture Canon Aptex Within the corporation

Claims (8)

[Claims] 1. A printer apparatus for recording on a recording medium using a recording head comprising a sub-heater and a heater for recording by a recording element, the first printer applying a voltage to the heater for recording by the recording head. First pulse generating means for generating a pulse, second pulse generating means for generating a second pulse applied to the sub-heater, and control so that the application of the first and second pulses to the recording head does not overlap. And a control unit for controlling the printer. 2. The printer device according to claim 1, further comprising a detection unit that detects an internal temperature of the recording head. 3. The printer device according to claim 1, further comprising four recording heads that perform recording corresponding to four colors of yellow, cyan, magenta, and black. 4. The second pulse applied to the four head units is controlled by the control unit so that the first pulse signals applied to the four head units do not overlap each other in the same time zone. The printer device according to claim 3, wherein the signals are adjusted so that the signals do not overlap each other in the same time zone. 5. The printer device according to claim 4, wherein the control unit further adjusts the pulse widths of the second pulse signals applied to the four head units to be the same. 6. The printer apparatus according to claim 1, wherein the recording head is a recordable full line type recording head corresponding to a width of the recording medium. 7. The printer device according to claim 1, wherein the recording head is an ink jet recording head that ejects ink to perform recording. 8. The recording head is a recording head for ejecting ink by utilizing thermal energy, and is provided with a thermal energy converter for generating thermal energy applied to the ink. Item 8. The printer device according to any one of items 1 to 7.