JP3184412B2 - Printer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art The recording width of a recording head mounted on a conventional ink jet printer is considerably smaller than the recording width of recording paper. Therefore, the recording head is provided in the printer so as to face the recording paper, and serial printing is performed by moving a carriage on which the recording head is mounted to the left and right.

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

[0004]

However, in general, the sub-heater is composed of a resistor, consumes a large amount of current, and is desired to be controlled from the viewpoint of reducing the power consumption of the entire apparatus. In particular, in the case of a 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 a nozzle heater is 100 Ω, the applied voltage is 24 V, the energization duty is 40%, the number of simultaneously energizing nozzles is eight in an LSI equipped with a nozzle heater, and eleven in a print head.
, The 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 70 Ω for one LSI and the applied voltage is 24 V, which is the same as that of the nozzle heater, the power consumption is 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 a power cable for supplying necessary power to one head or increasing the number of cables. In addition, when the current increases, noise is likely to be generated, and therefore, this measure is also required.
Further, since a color printer is provided with four print heads, if the four print heads are simultaneously driven, 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 apparatus is significantly increased and the size of the product is increased.

Accordingly, from the viewpoint of reducing power consumption,
There is a demand for accurate ON / OFF control of the sub-heater in consideration of the energization time of the nozzle heater. The present invention has been made in view of the above-described conventional example, and has an appropriate sub-heater ON / O.
An object is to provide a printer device capable of reducing power consumption by FF control.

[0008]

In order to achieve the above object, a printer according to the present invention has the following arrangement. That is, a printer apparatus that performs recording on a recording medium using a plurality of recording heads each including a heater for recording by a recording element and a sub-heater, and applies a voltage to the heater for recording of each recording head. First pulse generating means for generating a first pulse signal; and second pulse generating means for generating a second pulse signal to be applied to a sub-heater of each of the recording heads.
A pulse generation unit controls the application timings of the first and second pulse signals in each of the recording heads so as not to overlap, and the application timings of the second pulse signal do not overlap in each of the recording heads. And a control unit for controlling the application timing of the first pulse signal between the recording heads so as not to overlap with each other.

[0009]

According to the present invention, when a plurality of print heads each having a sub-heater and a print heater are used, the present invention prevents the application timings of the first and second pulse signals from overlapping in each print head unit. At the same time, control is performed so that the application timing of the second pulse signal does not overlap between the printheads, and the application timing of the first pulse signal applied to the printhead does not overlap between the printheads.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a circuit configuration of a color printer 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), development in a bitmap memory, and the like, various controls of a recording head, and a conveyance motor. , And 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 facsimile or a copier in addition to a normal printer) in consideration of a difference in an interface with a host, a difference in an image processing method, and the like. In contrast to the necessity, the engine unit 150 aims to reduce the difference depending on the application and standardize so that any application can cope with it and reduce the cost.

In this embodiment, the division of functions between 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 ・ Development of recording data to bitmap memory based on the above commands ・ Control of operation panel ・ Control box (described later) Control-Interface with engine unit 150-Optional 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 the recording paper transport system-Data transfer control to the recording head-Heater energization control to the recording head-Temperature management-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-F 111 for executing a control program, a ROM 112 for storing the control program, a system RAM 113 for executing the program, an IFCNT 114 for communicating with the host, and a host computer. Bitmap RAM for recording transmitted bitmap data of recorded contents
115, a dedicated circuit GAF 116 for controlling the bitmap RAM 115 and communicating with the engine unit 150, an emulation RO for analyzing recording 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 serving as an interface with the above optional functions 120, an operation panel 1 including a user interface, keys for performing various operations, and an LCD for displaying messages from the apparatus.
21.

Reference numeral 122 denotes a control box for performing various instruction operations as a user interface when standalone image recording is performed using the image data stored in the memory card 119 without connecting the printer to a host. It is. Reference numerals 123 and 124 denote input / output interfaces (option IN and option OUT) of various additional devices which are optionally connected to the printer. In this embodiment, a recording sheet supply unit described later is connected to the option IN123, and a recording sheet discharge unit described later is connected to the option OUT124.

Although details will be described later, the CPU-F 111
Based on the information about the recording paper transferred from the engine unit 150 received by the GAF 116, the IO port 1
A recording paper supply unit and a 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 includes an engine circuit 160 mainly for conveying the recording paper and an engine circuit 180 mainly for controlling the recording head drive.

The engine circuit 150 includes 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.
And an A / D converter for converting an analog input from the port into digital data. The CPU-E161 executes a control program and performs various control processes.
RAM1 used for executing program of PU-E161
62, EEP for recording unevenness correction data of the recording head, etc.
It comprises a ROM 163, a clock clock (RTC) 164, and a dedicated circuit GAE 165 that performs test recording data creation and communication with the formatter unit 110. Reference numeral 171 denotes a sensor for detecting the position of the recording paper, and 172 denotes a transport motor for transporting the recording paper.

The engine circuit 180 includes the recording head 1
Drive control 90 (specifically, including an operation of generating a pulse signal for heating a nozzle heater provided for each nozzle of the print head based on an input image signal); A dedicated control for controlling a print head and a motor 191 for moving a cap (not shown) for capping the ink discharge nozzle, and for controlling a sensor 192 for detecting the position of the cap and the position of the print head. The circuit GAE181 is included. In addition, a sub-heater (not shown) composed 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 10 described with reference to FIG.
FIG. 2 is a side cross-sectional view showing a schematic configuration of a zero. 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 has a cutter for cutting the roll paper after recording are incorporated in the printer apparatus 100. Is shown. The engine circuit 160 is mounted on the device as shown in FIG.
It is divided into 60a and 160b.

Reference numeral 190Y denotes a full line recording head (Y head) for performing recording using yellow (Y) ink, and 190M denotes a full line recording head (M) for recording using magenta (M) ink. Head), 190
C is a full-line recording head (C head) that performs 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 transport direction of the recording paper.

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

The printer of this embodiment having such a configuration can print out at a maximum speed of 150 mm / sec. Next, the sub-heater control in the printer having the above configuration will be described. In this embodiment, the circuit for controlling the print head 190 is the GAE 181 as described above, and the sub-heater control circuit for controlling the sub-heater in the print head 190, which is a feature of this embodiment, is incorporated in the GAE 181.

First, the basic concept relating to the sub-heater control will be described. When a recording head is performing a recording operation, if the sub-heater of the recording head is turned off, the amount of current flowing through one recording head is sufficient for the nozzle heater. On the other hand, when the sub-heater is ON,
When the printing operation is stopped, the current consumption of the printing head is sufficient for the sub heater. As described above, when the recording head is controlled so that the recording operation and the sub-heat 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 below the four recording heads 190Y, 190M, 190C and 190K shown in FIG. The timing of recording is the horizontal synchronizing signal (HSYN) output every time the recording paper moves by one line.
C signal). The recording paper is stored in the recording paper discharge unit 131 when the recording is completed.

FIG. 3 is a circuit diagram showing a detailed configuration of the sub-heater control circuit. By this sub-heater control circuit,
Control the energization of the sub-heater provided in the print head,
When the power of the apparatus is turned on or when the temperature of the operating environment of the apparatus is low, the internal temperature of the head is increased, and when the internal temperature of the head reaches a temperature necessary for discharging 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. This operation is realized by the CPU-E 161 detecting a temperature sensor (not shown) in the head, transferring the detection data to the GAE 165, and the sub-heater control circuit in the GAE 165 controlling the sub-heater and the fan.

In FIG. 3, 200C, 200M, 20
0Y and 200K are CPU-E161 to GAE1 respectively.
The sub-heat signal (K−S) set in the register No. 65
UBHEAT, C-SUBHEAT, M-SUBHEA
T, Y-SUBHEAT) to one input terminal, 201-206 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 a reference clock signal (CK) that is reset and input by an HTRTG * signal described later,
The pulse generation circuit is triggered by the BL * signal so that the pulse generation circuit 208 generates a pulse at a period of 78 μsec. Each of the flip-flops 203 to 206 uses a pulse generated by the pulse generation circuit 208 as a clock, and outputs a sub-heat basic pulse (K-SUBH, C-SUB).
H, M-SUBH, Y-SUBH) for generating trigger signals (K-SHAREA, C-SHARE)
A, M-SHAREA, Y-SHAREA). These trigger signals are set to 78 μm so that the sub-heat timing for each print 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 a time chart showing a control sequence of the sub-heater shown in FIG. Here, the time during which the heater of the recording head is energized is determined by a recording pulse signal (K-FAREA, C-FA) for ink ejection for each ink color to be recorded.
REA, M-FAREA, Y-FAREA) are ON, and the time for energizing the sub-heater is the sub-heat basic pulse (K-SUBH, C-SUBH, M-
(SUBH, Y-SUBH) is ON.

Now, the cycle of the HTTRG * signal synchronized with the horizontal synchronization signal (HSYNC) is 470 μsec at shortest in consideration of the maximum printing speed of the printer, and the energization time of one head is 116 μsec. This signal HTTRG * 4
Turns on sequentially for each color. Basically, the control of the sub-heater is started when the CPU-E 161 sets the sub-heat signal in the register of the GAE 165.

The sub-heat signal (K-SUBHEAT, C
-SUBHEAT, M-SUBHEAT, Y-SUBH
When EAT) is turned on, the subheat basic pulse (FIG. 4)
K-SUBH, C-SUBH, M-SUBH, YS
UBH) are sequentially turned on. At this time, the recording pulse (K
-FAREA) is ON, the sub-heat basic pulse (K-SUBH) is turned OFF, and the recording head 1
The current that flows through 90K is the current amount 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 turned off, the current is sufficient for the sub-heater.

Further, since the sub-heater is provided in the print head, if one energizing time is too long, the ink in the print head foams and bubbles are generated in the ink chamber, and the ink is not ejected during the printing operation. May occur. Therefore, there is an optimum value for the energization time, 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 controlling with four print heads is as follows.

That is, 1/6 of the cycle 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 recording pulses (K-FAREA, C-FARE in FIG. 4) for ink ejection for each ink color to be recorded.
A, M-FAREA, Y-FAREA) sequentially (KCM
Y order). On the other hand, the sub-heat basic pulse is synchronized with the horizontal synchronization signal (HSYNC) during the recording operation, and the next pulse (Y-SUBH) is applied without applying the first two pulses (C-SUBH and M-SUBH). Finally, a recording head 190Y on which recording is performed is applied, then a sub-heat basic pulse K-SUBH is applied to the recording head 190K, and C-SUBH is further applied to a recording head 190C on which recording is performed second. Then M-SU
BH is applied to the print head 190M where printing is performed third. Thereafter, the sub-heat basic pulse is sequentially applied in the same manner.

More specifically, as shown in FIG. 4, the sub-heater is normally C-SUBH → M-SUBH → Y-
It is turned ON in the order of SUBH → K-SUBH. The counter is reset by the HTTRG * signal when accelerating or decelerating the printer recording speed and during high-speed printing.
Without outputting H and M-SUBH, the current is supplied in the order of K-SUBH → C-SUBH → M-SUBH from the next Y-SUBH. With this arrangement, when the nozzle heater of one print head is energized, the sub heaters are not energized at the same time, and the sub heaters of the four print heads can be uniformly energized. Can be lowered. During acceleration / deceleration or low-speed recording (corresponding to normal energization in FIG. 4), the sub-heater is continuously energized, and during acceleration / deceleration, the sub-heater is energized even after the nozzle heater has been energized. Therefore, head temperature control can be performed at high speed.

Next, other control signals shown in FIGS. 3 and 4 will be described. In the case of an inkjet recording head, an operation sequence called a recovery operation is required to prevent clogging of the nozzle. This is an operation for removing factors that cause ink in the nozzles to condense or dust or the like to adhere to the ink discharge port, thereby making ink discharge unstable. More specifically, operations such as pressurizing and circulating the ink in the recording head and forcibly ejecting the ink from all the nozzles are performed. The PGO shown in FIGS. 3 and 4 shows this recovery operation period.
P signal. As shown in FIG. 4, when the PGOP signal is ON, that is, during the recovery operation, the energization of the sub-heater is interrupted. This is because the energization of all the nozzle heaters is performed by the recovery operation, so that the internal temperature of the recording head rapidly increases. Accordingly, by interrupting the power supply to the sub-heater, the temperature change is slowed down, and the thermal shock applied to the print head is reduced.

Therefore, according to the present embodiment, the power supply to the nozzle heater by the recording operation of the recording head and the power supply to the sub-heater which consumes a large amount of current of the recording head are controlled so as to be exclusive. The power can be reduced. As a result, the diameter of the current supply cable can be reduced, and the power of the printer can be covered by a small-capacity power supply unit, so that the size of the apparatus can be reduced.

Although the present embodiment has been described with a circuit configuration in which the formatter section and the engine section are separated, the present invention is not limited to this. For example, an integrated printer may be used. Further, it is needless to say 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 cycle of the horizontal synchronization circuit and the like.

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 another order may be used. The present invention particularly includes a means (for example, an electrothermal converter or a laser beam) for generating thermal energy as energy used for causing ink to be ejected even in an ink jet recording system, and the state of the ink by the thermal energy is provided. Although the printing apparatus of the type that causes a change has been described, according to such a method, it is possible to achieve higher recording density and higher definition.

The typical configuration and principle are described in, for example, US Pat. Nos. 4,723,129 and 4,740.
It is preferable to use the basic principle disclosed in the specification of Japanese Patent No. 796. This method can be applied to both the so-called on-demand type and continuous type. In particular, in the case of the on-demand type, liquid (ink)
By applying at least one drive signal corresponding to the recorded information and providing a rapid temperature rise exceeding the nucleate boiling to an electrothermal transducer arranged corresponding to the sheet or the liquid path holding the Since thermal energy is generated in the electrothermal transducer and film boiling occurs on the heat-acting surface of the recording head, bubbles in the liquid (ink) corresponding to this drive signal on a one-to-one basis can be formed. It is valid. By discharging the liquid (ink) through the discharge opening by the growth and contraction of the bubble, at least one droplet is formed. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of the liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable.

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

Further, as a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus, the length is determined by a combination of a plurality of recording heads as disclosed in the above specification. This may be either a configuration satisfying the above requirements or a configuration as a single recording head formed integrally. In addition, a replaceable chip-type recording head that can be electrically connected to the device main body and supplied with ink from the device main body by being attached to the device main body, or ink that is integrated with the recording head itself A cartridge type recording head provided with a tank may be used.

It is preferable to add recovery means for the print head, preliminary auxiliary means, and the like provided as components of the printing apparatus of the present invention since the effects of the present invention can be further stabilized. . If these are specifically mentioned, capping means for the recording head, cleaning means, pressurizing or suction means, preheating means using an electrothermal transducer or another heating element or a combination thereof, and recording Performing a preliminary ejection mode for performing another ejection is also effective for performing stable printing.

Further, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but may be a single recording head or a combination of plural recording heads. Alternatively, the apparatus may be provided with at least one of full colors by color mixture. In the embodiments of the present invention described above, the ink is described as a liquid.However, even if the ink solidifies at room temperature or below, an ink that softens or liquefies at room temperature may be used. Generally, the temperature of the ink itself is controlled within a range of 30 ° C. or more and 70 ° C. or less to control the temperature so that the viscosity of the ink is in a stable ejection range. Anything can be used as long as

In addition, in order to positively prevent the temperature rise due to thermal energy as energy for changing the state of the ink from the solid state to the liquid state,
Alternatively, in order to prevent evaporation of the ink, an ink which solidifies in a standing state and liquefies by heating may be used. In any case, the application of heat energy causes the ink to be liquefied by the application of the heat energy recording signal and the liquid ink to be ejected, or by the time the ink reaches the recording medium, the solidification of the ink already begun. The present invention is also applicable to a case where an ink having a property of liquefying for the first time is used. In such a case, as described in JP-A-54-56847 or JP-A-60-71260, the ink is held in a liquid state or a solid state in the concave portion or through hole of the porous sheet. It is good also as a form which opposes an electrothermal transducer. 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 to the above, the recording apparatus according to the present invention may be provided not only as an image output terminal of an information processing apparatus such as a computer but also integrally or separately, a copying apparatus combined with a reader or the like, and a transmission / reception apparatus. It may take the form of a facsimile machine having functions. The present invention may be applied to a system including a plurality of devices, or may be applied to an apparatus including a single device. Further, it is needless to say that the present invention can be applied to a case where it is achieved by applying a program to a system or an apparatus.

[0044]

As described above, according to the present invention, when a plurality of recording heads each having a sub-heater and a recording heater are used, the application timing of the first and second pulse signals in each recording head unit. Are controlled so as not to overlap, and the application timing of the second pulse signal is not overlapped between the printheads, and the application timing of the first pulse signal applied to the printhead is not overlapped between the printheads. With such control, there is an effect that the maximum current supplied to the recording head can be suppressed even in an apparatus using a plurality of recording heads.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration of a color printer having a full-line recording head according to an ink jet system, 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 unit 111 CPU-F 120 IO port 130 Recording paper supply unit 131 Recording paper discharge unit 150 Engine unit 171a, 171b Sensor 200C, 200M, 200Y, 200K AND circuit 201-206 Flip-flop 207 Counter 208 Pulse generation circuit

────────────────────────────────────────────────── (5) Continuation of the front page (72) Inventor Hideaki Kishida 5540-11 Sakate-cho, Mizukaido-shi, Ibaraki Inside Canon Uptex Co., Ltd. (JP, A) JP-A-6-143607 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B41J 2/05 B41J 2/21

Claims (7)

(57) [Claims] 1. A heater and a heater for recording by a recording element.
A printer apparatus for recording on a recording medium using a plurality of recording heads each provided with a Buhita, first pulse for generating a first pulse signal to be applied the the heater for the recording of each recording head Generating means, and a second pulse applied to a sub-heater of each of the recording heads
A second pulse generating means for generating a signal, together with the application timing of the first and second pulse signals in each recording head is controlled so as not to overlap, the
Timing of applying the second pulse signal between recording heads
So that the recording heads do not overlap, and
So that the application timing of the first pulse signal does not overlap
And a control means for controlling the printer. 2. The printer according to claim 1, further comprising a detecting unit for detecting an internal temperature of the recording head. 3. The recording head according to claim 1, wherein the plurality of recording heads are
3. The printer device according to claim 1, wherein the printer head is a recording head that performs recording corresponding to four colors of cyan, magenta, and black. Wherein said control means, according to claim 3, wherein the pulse width of the second pulse signal to be applied to four of the recording head is a means of further adjusted to be the same Printer device. Wherein said each recording head, the printer apparatus according to any one of claims 1 to 4, characterized in that a recording head capable of recording a full-line type corresponding to the width of the recording medium. Wherein said recording head, the printer apparatus according to any one of claims 1 to 5, characterized in that an ink jet recording head for recording by discharging ink. 7. The recording head according to claim 1, wherein the recording head ejects ink using thermal energy, and includes a thermal energy converter for generating thermal energy applied to the ink. Item 7. A printer according to any one of Items 1 to 6 .