JP2000218884A - Recording apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording apparatus which can recognize a paper breadth at high speed even for large recording media used in a large recording apparatus. SOLUTION: The apparatus has a first recording head 101 and a second recording head 102. Further, the recording heads are provided with recording medium end-detecting devices 103 and 104 for detecting ends of recording media respectively. These recording heads are kept waiting at standby positions spaced by a predetermined distance t. When a recording medium is supplied, each recording head moves towards the center from the standby position to a recording medium end part. At this time of the movement, both ends of the recording medium are detected, and a distance from the standby position to the recording medium end part is subtracted from the distance t, whereby a breadth of the recording medium is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording apparatus,
In particular, the present invention relates to a recording apparatus having a recording medium width detecting function.

[0002]

2. Description of the Related Art In recent years, with the spread of information devices, recording devices, which are peripheral devices, have been rapidly spreading.

As one of such recording apparatuses, there is provided a serial scanning type recording apparatus which performs recording by scanning a recording head on which a plurality of recording elements are arranged on a recording medium. As an example of this serial scanning type recording apparatus, an ink jet recording apparatus transports a recording medium and a carriage on which a recording head in which a plurality of ejection openings as recording elements are arranged, an ink tank storing recording ink, and the like. It has transport rollers and a control unit for controlling these. The recording medium is installed so that the ejection port faces the recording medium.

Then, the recording head is moved from one end to the other end of the recording medium in a direction (referred to as "main scanning direction") perpendicular to the direction in which the recording medium is conveyed by the conveying rollers (referred to as "sub-scanning direction"). That is, a serial scan is performed, and an image is formed by ejecting ink from each ejection port during the movement. Further, when the recording head moves by one line, the conveyance roller conveys the recording medium by a fixed amount, and the recording by the recording head and the conveyance by the conveyance roller are repeated to form an image on the entire paper surface. Has become. In the case of an ink jet recording apparatus supporting color recording, a color image is formed by overlapping ink droplets ejected from a recording head equipped with inks of a plurality of colors, respectively, or by ejecting ink droplets at predetermined positions of the same pixel. Go.

Many of such recording apparatuses can record not only one size but also a plurality of types of recording media having different sizes. For this reason, the paper width is detected before recording by a paper width detection device mounted on the carriage, and the control is performed so that the recording head is scanned according to the paper width. In this paper width detection method, once a recording medium is fed, the carriage is once scanned in the main scanning direction once from one end to the other end of the recording medium, and the paper width detection device detects the end of the recording medium from the first end to the last. In many cases, the paper width is obtained by calculating the distance to the edge of the recording medium to be detected.

[0006]

However, in the above-described conventional paper width detecting method, when a recording medium of a new size is fed, the carriage is always moved from one end to the other end of the recording medium before recording every time. Must be scanned.

In a small-sized ink jet recording apparatus in which the size of a recording medium that can be fed is limited to a relatively small one, the size of the recording medium that can be recorded is small, and the distance of one scan is short. Although this method did not take much time, there was no problem with this method. However, in recent large-sized ink jet recording apparatuses, the size of the recording medium that can be recorded has been increased, and the moving distance of one scan has been increased. It takes time to detect the paper width detection method.

The present invention has been made in view of such a problem, and provides a recording apparatus capable of recognizing a paper width at high speed even in a large recording medium used for a large recording apparatus. With the goal.

[0009]

According to the present invention, there is provided a recording apparatus for performing recording by moving a recording head in a predetermined direction on a recording medium, comprising a first recording head and a second recording head. Further, each of the recording heads includes a recording medium end detecting means for detecting an end of the recording medium, and the first recording head and the second recording head stand by at a standby position separated by a predetermined distance t. When a recording medium is fed between the first recording head and the second recording head, each moves toward the center from the standby position to an end of the recording medium, and the recording medium The edge detection means is
In this movement, both ends of the recording medium are detected and the width of the recording medium is obtained.

According to the above construction, the recording medium end detecting means provided in the first recording head determines the distance from the standby position to one end of the recording medium, and the recording medium provided in the second recording head is used for recording. The medium end detecting means obtains the distance from the standby position to the other end of the recording medium, and subtracts the moving distance s, which is the sum of these obtained distances, from the predetermined distance t to obtain the recording medium width. By configuring the print data in accordance with the determined recording medium width, the recording medium width can be determined without moving the recording head over the entire recording medium, and recording can be performed at an appropriate position on the recording medium.

[0011]

(Embodiment 1) An embodiment of a printer to which an ink jet recording apparatus of the present invention is applied will be described with reference to the drawings.

FIG. 1 is a schematic perspective view showing the configuration of the recording portion of the printer.

The printer has two recording heads, a first recording head 101 and a second recording head 102. Each of these print heads has four rows of discharge ports in which a plurality of discharge ports are arranged, and inks of four different colors are supplied from ink tanks (not shown) provided behind the print head. . Each discharge port is provided with a heating element. When discharging, the heating element is energized to generate heat, and bubbles are generated in the ink near the space filled from the ink tank through the ink supply path. Ink droplets are ejected from the ejection ports by the pressure at which the bubbles are generated, and an image is formed by ink dots formed by the flying ink droplets landing on a recording medium. A wide variety of colors are expressed by precisely overlapping inks of the respective colors on the same pixel and ejecting them. The recording head has a multi-head configuration in which these four color ink tanks and four ejection opening arrays are integrated.

The two recording heads are mounted on independent carriages, respectively. The carriages reciprocally scan along the belts 105 and 106 in the direction of arrow q (hereinafter, also referred to as "main scanning direction"). I do. At the time of this scanning, printing is performed by ejecting ink from each recording head by the above-described ejection method.

Further, the recording medium 109 is fed to a fixed position by a sheet feeding roller 108 so as to face the ejection opening arrays of these recording heads. In addition, transport roller 1 for each print
07, it is sent in the direction of arrow q (hereinafter also referred to as “sub-scanning direction”). At this time, the paper feed roller 108 also serves to press the recording medium 109. The size of the recording medium fed here varies from small to large. The paper width of these recording media is determined by the first paper edge detection device 103 and the second paper edge detection device 10 installed on the carriage.
4, the recording is performed in accordance with the detected paper width. The detection method will be described later. Further, the paper feeding method of the recording medium may be a paper feeding method in which the center line of the recording medium and the printer's center line are combined, or may be a paper feeding method that is brought to one end of the printer.

The movements of these two recording heads, two carriages, two paper end detecting devices, paper feed rollers, and transport rollers are controlled by a control unit (not shown). And issue an operation command.
The operation signal from each part is read to control the movement of each part.

Next, the structure of each paper edge detecting device will be described with reference to the sectional view of FIG.

Each paper edge detecting device includes a light source 401 and a sensor 402 for receiving reflected light of the light emitted by the light source 401 so as to face the recording medium 109. As the light source 401, an LED or the like is used. When light is emitted from the light source 401 to the recording medium 109, the recording medium 40
Since there is a difference in reflectance between the area where 1 exists and the area where 1 does not exist, the sensor 402 reads the difference and detects the paper edge.

Next, a method for detecting the paper width of a recording medium by interlocking two paper edge detecting devices having such a structure will be described.

FIG. 3 is a schematic diagram showing two recording heads and a paper edge detecting device.

FIG. 4 is a flowchart showing the control sequence of the paper width detection by the control unit.

Before the start of recording, the first recording head 101 and the second recording head 102 are located at the left and right home positions, respectively, as shown in FIG.

First, when a print command is input from the control unit, the paper feed roller feeds the recording medium 109 to a print position (step 1).

When the recording medium 109 is fed and reaches the printing position, both recording heads move to detect the end of the paper (step 2). Specifically, first, the first print head 101 moves in the direction of arrow a, and the second print head 102 moves in the direction of arrow b, that is, both print heads move toward the center. During this movement, the first paper edge detection device 103 detects the left end 201 of the recording medium 109, and the second paper edge detection device 104 detects the right end 202 of the recording medium 109. Each paper edge detection device recognizes that the paper edge has been detected when the reflectance has changed, and sends a detection signal to the control unit.

Upon receiving this detection signal, the control unit recognizes that the paper edge has been detected (step 3) and obtains the paper width. How to determine the paper width will be described later. Then, the recording head is moved to the original home position (step 4).

The control unit obtains the paper width as follows.

First, in the control unit, the distance between the left and right home positions is managed by being converted into the number of encoder pulses.

Therefore, the number of encoder pulses counted from the left home position to the reception of the detection signal of the first paper edge detecting device 103, that is, the distance A from the left home position to the left end 201 of the recording medium, and the right home position The number of encoder pulses counted from the position until the detection signal of the paper edge detection device 104 is received, that is, the distance B from the right home position to the right end 202 of the detection recording medium is obtained. Then, the previous distances A and B are subtracted from the previously obtained distance C between the left and right home positions to determine the paper width of the recording medium.

Then, the control unit converts the recording data according to the paper width thus obtained, and performs recording along the paper edge.

The recording method is as follows.
Is scanned in the direction of arrow a to perform printing. When the first print head 101 reaches the center of the print medium 109, the first print head 101 scans in the direction of arrow b and returns to the home position. On the other hand, when the first recording head 101 reaches the central portion, the second recording head 102 scans in the direction of arrow b to perform printing. When it reaches the center, it scans in the direction of arrow a and returns to the home position. That is, the two recording heads move in synchronization, and the first recording head 101 prints on the left half of the recording medium and the second recording head 102 prints on the right half. Further, the central portion is scanned by both recording heads overlapping each other.

As described above, one paper edge detection device does not scan and detect the entire paper width, but two paper edge detection devices scan from the home position to each end of the recording medium. Since the paper width can be obtained by simply performing the operation, the time required for the detection is shortened, and the paper width can be recognized at a high speed even with a large recording medium.

(Embodiment 2) The embodiment 1 has been described as being effective in detecting the paper width of a large recording medium by providing the paper end detecting device on each of two independent carriages. In this embodiment, a description will be given of an embodiment in which two independent types of recording media having different sizes are simultaneously detected using the two independent paper edge detection devices, and the respective recording media are asynchronously recorded.

The structure of the printer according to this embodiment is the same as that of the first embodiment. In the first embodiment, it is assumed that a large recording medium is fed, but in the present embodiment, FIG.
Suppose that two types of recording media having different sizes are simultaneously fed as shown in FIG. A method for detecting the paper width of these two types of recording media will be described below with reference to the flowchart of FIG.

Before the start of recording, as shown in FIG. 5, the first recording head 101 is located at the leftmost home position, and the second recording head 102 is located at the rightmost home position.

When a print command is input from the control unit, the recording medium α is fed from the left end of the paper feed roller and the recording medium β is fed from the right end to the print position (step 21).

When each recording medium is fed to the printing position,
The first recording head 101 moves in the direction of arrow a to detect the paper edge. Further, the second recording head 102 also moves in the direction of arrow b to detect the paper edge (step 22). Specifically, first, when the first recording head 101 moves in the direction of the arrow a, the first paper edge detection device 103 detects the paper edge. First, the paper edge detection device 103 starts counting the number of pulses of the encoder simultaneously with the movement. When the reflectance reaches the left end 301 of the recording medium α, the reflectance changes. When the change is captured, the number of pulses counted so far is transmitted to the control unit, the pulse number of the encoder is once cleared, and the counting is started again.
Further, it moves on the recording medium α until the reflectivity changes again. When the light reaches the right end 302, the reflectance changes again. When the change is captured, the counting of the number of pulses of the encoder is stopped, it is recognized that both ends of the recording medium α have been detected, and a detection signal is sent to the control unit.

At the same time that the second recording head 102 also moves in the direction of the arrow b, the second paper end detecting device 104 starts counting the number of pulses of the encoder. And the right end 3 of the recording medium β
When it reaches 04, the reflectance changes. When this change is captured, the number of pulses counted so far is transmitted to the control unit, the pulse number is cleared once, counting is started again, and the reflectance changes again. Recording medium β
Move up. Then, when the reflectance reaches the left end 303, the reflectance changes again. When this change is captured, the counting of the number of pulses of the encoder is stopped, it is recognized that both ends of the recording medium β have been detected, and a detection signal is sent to the control unit.

Upon receiving this detection signal, the control unit recognizes that the paper edge has been detected (step 23), recognizes the position where the recording medium is installed from the number of encoder pulses transmitted first, and furthermore, Next, the total number of transmitted pulses of the encoder is converted into a distance to obtain a paper width. Then, the recording head is moved to the original home position (step 24).

The control unit converts print data for each print medium in accordance with the obtained paper width and sends it to each print head, and printing is performed by each print head as follows.

Here, since the paper widths of the recording medium α and the recording medium β are different, the printing time for one scan is also different. Therefore, the recording operation of each recording head is asynchronous.

The first recording head 101 scans in the direction of the arrow a by the width of the recording medium α previously obtained, and performs printing.

On the other hand, at the same time, the second recording head 102 also scans in the direction of the arrow b for the paper width of the recording medium β obtained previously to perform printing. When both print heads have moved to the paper end of the print medium (to the right end 302 in the case of the first print head, to the left end 303 in the case of the second print head), they return to the home position as needed.

When both recording heads return to their home positions, the transport rollers transport the recording media α and β by a fixed amount. Then, each recording head performs printing again. An image is formed by repeating conveyance and printing in this manner.

As described above, in the present embodiment, it is possible to simultaneously detect the paper width and the position of the two types of recording media,
Two different types of recording data can be recorded simultaneously.

The recording media α and β to be fed may be of the same size.

Third Embodiment In the second embodiment, an example in which two types of recording media having different sizes are fed at the same time has been described. However, in the present embodiment, one of the recording heads newly prints during printing. A paper edge detection method when a recording medium is fed to one of the recording heads will be described.

The printer of this embodiment has the structure shown in FIG.

The printer has two first recording heads 101 and second recording heads 102 mounted on carriages that operate independently, as in the first and second embodiments. The recording head includes a first paper edge detection device 103 and a second paper edge detection device 104, respectively.

The paper feed roller and the transport roller each have two systems divided at the center of the printer. Each of the paper feed rollers and the transport rollers is provided with an individual drive motor, and can be driven asynchronously with each other.

The first paper feed roller 1081, the first recording head 101, and the first transport roller 1071 are driven in conjunction with each other to form a first system. Second paper feed roller 10
82, the second recording head 102, and the second transport roller 107
2 are driven in conjunction with each other, and these are used as a second system.

Here, the flow of processing when a recording medium is fed to the second system while printing is already being performed in the first system will be described with reference to the flowchart of FIG.

Here, what is newly fed is the recording medium γ.
And

When a new print command is input to the control unit during the recording operation of the first recording head 101, the second paper feed roller 108
2 feeds the recording medium γ to the printing position (step 3
1).

When the recording medium γ is fed to the printing position,
The second recording head moves in the direction of arrow b to detect the paper edge (step 32). The detection method is the same as in the second embodiment,
The second paper edge detecting device 104 starts counting the number of pulses of the encoder simultaneously with the movement. When the light reaches the right end of the recording medium γ, the reflectance changes. When this change is captured, the number of pulses counted so far is transmitted to the control unit, and the number of pulses once counted is cleared. Then, it starts counting again, and moves on the recording medium γ until the reflectivity changes again. And reach the left end,
Since the reflectance changes, when this change is detected, the counting of the number of pulses is stopped, it is recognized that both ends of the recording medium γ have been detected, and a detection signal is sent to the control unit.

Upon receiving this detection signal, the control unit recognizes that the paper edge has been detected (step 33), recognizes the position where the recording medium is set from the number of encoder pulses transmitted first, and furthermore, Next, the total number of transmitted pulses of the encoder is converted into a distance to obtain a paper width. Then, the second recording head is moved to the home position (Step 34).

Then, the control section converts the print data according to the obtained paper width and sends it to the second print head, where printing is performed.

Recording is performed asynchronously with the first system, and the second recording head scans by the width of the paper in the direction of arrow b to perform recording. When the recording head moves to the paper end, the second recording head returns to the original position. Meanwhile, the second transport roller 1072 transports the recording medium γ by a predetermined amount. As described above, the recording by the second recording head and the conveyance by the second conveyance roller are alternately repeated to complete the image.

It is needless to say that the same processing is performed when a recording medium is fed to the first system while the second system is recording.

As described above, by dividing the recording system into two systems, even if a new recording medium is fed by the other system while one system is recording, the paper width can be measured correctly.
Recording can be performed accordingly.

In all of the first, second, and third embodiments,
Although the printer of the ink jet type is used, the present invention is not limited to this. The present invention can be applied to all serial scan type recording apparatuses.

(Others) It should be noted that the present invention includes a means (for example, an electrothermal converter or a laser beam) for generating thermal energy as energy used for performing ink ejection, particularly in an ink jet recording system. An excellent effect is obtained in a recording head and a recording apparatus of a type in which the state of ink is changed by the thermal energy. This is because according to such a method, it is possible to achieve higher density and higher definition of recording.

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 is a so-called on-demand type,
Although it can be applied to any type of continuous type, in particular, in the case of the on-demand type, it can be applied to a sheet holding liquid (ink) or an electrothermal converter arranged corresponding to the liquid path. By applying at least one drive signal corresponding to the recorded information and giving a rapid temperature rise exceeding the nucleate boiling, heat energy is generated in the electrothermal transducer, and film boiling occurs on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal on a one-to-one basis.
This is effective because air bubbles inside can be formed. The liquid (ink) is ejected through the ejection opening by the growth and contraction of the bubble to form at least one droplet. 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 liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable. As this pulse-shaped drive signal, those described in U.S. 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 the configuration of the recording head, in addition to the combination of the discharge port, the liquid path, and the electrothermal converter (linear liquid flow path or right-angle liquid flow path) as disclosed in the above-mentioned respective specifications, U.S. Pat. No. 4,558,333 and U.S. Pat.
A configuration using the specification of Japanese Patent No. 59600 is also included in the present invention. In addition, Japanese Unexamined Patent Application Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal converter for a plurality of electrothermal converters, and an aperture for absorbing a pressure wave of thermal energy is provided. The effect of the present invention is effective even if the configuration is based on JP-A-59-138461, which discloses a configuration corresponding to a discharge unit. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

Further, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium on which a recording apparatus can record. Such a recording head may have a configuration that satisfies the length by a combination of a plurality of recording heads, or a configuration as one integrally formed recording head.

In addition, even in the case of the serial type as described above, the recording head fixed to the apparatus main body or the electric connection with the apparatus main body and the ink from the apparatus main body are attached by being mounted on the apparatus main body. The present invention is also effective when a replaceable chip-type recording head that can be supplied or a cartridge-type recording head in which an ink tank is provided integrally with the recording head itself is used.

Further, it is preferable to add a recording head ejection recovery unit, a preliminary auxiliary unit, and the like as the configuration of the recording apparatus of the present invention since the effect of the present invention can be further stabilized. If these are specifically mentioned, the recording head is heated using capping means, cleaning means, pressurizing or suction means, an electrothermal transducer, another heating element or a combination thereof. Pre-heating means for performing the pre-heating and pre-discharging means for performing the discharging other than the recording can be used.

The type and number of recording heads to be mounted are, for example, not only those provided for one color ink but also a plurality of inks having different recording colors and densities. A plurality may be provided. That is, for example, the printing mode of the printing apparatus is not limited to a printing mode of only a mainstream color such as black, but may be any of integrally forming a printing head or a combination of a plurality of printing heads. The present invention is also very effective for an apparatus provided with at least one of the recording modes of full color by color mixture.

In addition, in the embodiments of the present invention described above, the ink is described as a liquid. However, an ink which solidifies at room temperature or lower and which softens or liquefies at room temperature may be used. In general, the ink jet method generally controls the temperature of the ink itself 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. Sometimes, the ink may be in a liquid state. In addition, in order to positively prevent the temperature rise due to thermal energy by using the energy of the state change from the solid state of the ink to the liquid state, or to prevent the ink from evaporating, the ink is solidified in a standing state and heated. May be used. In any case, the application of heat energy causes the ink to be liquefied by the application of the heat energy according to the recording signal and the liquid ink to be ejected, or to start to solidify when reaching the recording medium. 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, the ink
JP-A-54-56847 or JP-A-60-7
As described in Japanese Patent Publication No. 1260, it is also possible to adopt a form in which the sheet is opposed to the electrothermal converter in a state where it is held as a liquid or solid substance in the concave portion or through hole of the porous sheet. 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, the form of the ink jet recording apparatus of the present invention may be used not only as an image output terminal of an information processing apparatus such as a computer, but also as a copying apparatus combined with a reader or the like, or a facsimile apparatus having a transmitting / receiving function. It may take a form.

[0070]

By using the recording apparatus of the present invention,
The first recording medium edge detection device provided in the first recording head determines the distance from the standby position to the left end of the recording medium, and the second recording medium edge detection device provided in the second recording head records from the standby position. The distance to the right end of the medium is obtained, and the moving distance s, which is the sum of the obtained distances, is subtracted from the predetermined distance t to obtain the width of the recording medium, and the recording head moves throughout the recording medium. The width of the recording medium can be obtained without any need. Therefore, it is possible to recognize the paper width at high speed even in a large recording medium.

Further, since two recording medium end detecting devices are provided, even if two types of recording media are fed, the width of each recording medium can be detected simultaneously.

Further, since the two recording heads can be driven asynchronously, even if a recording medium is fed to the other recording head during recording by one recording head, it is necessary to stop the recording head during recording. And the width of the recording medium can be detected.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a recording apparatus of the present invention.

FIG. 2 is a cross-sectional view of a recording medium edge detection device.

FIG. 3 is a schematic front view illustrating driving of a recording head.

FIG. 4 is a flowchart illustrating a recording medium width detection process.

FIG. 5 is a schematic front view illustrating driving of a recording head according to a second embodiment.

FIG. 6 is a flowchart illustrating a recording medium width detection process according to the second embodiment.

FIG. 7 is a schematic perspective view of another example of the recording apparatus of the present invention.

FIG. 8 is a flowchart illustrating a recording medium width detection process according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 First recording head 102 Second recording head 103 First recording medium end detecting device 104 Second recording medium end detecting device 105 Belt (1) 106 Belt (2) 107 Conveying roller 108 Feeding roller 109 Recording medium 401 Light source 402 Sensor

Claims (6)

[Claims] 1. A recording apparatus for performing recording by moving a recording head in a predetermined direction on a recording medium, comprising: a first recording head and a second recording head; The first recording head and the second recording head are waiting at a standby position separated by a predetermined distance t, and the first recording head and the second recording head When the recording medium is fed between the recording medium and the second recording head, each moves toward the center from the standby position to the end of the recording medium, and the recording medium end detection unit performs recording during this movement. A recording apparatus for detecting both ends of a medium and obtaining a recording medium width. 2. The recording medium end detecting means subtracts a moving distance s, at which each of the recording heads has moved from each of the standby positions to an end of the recording medium, from the predetermined distance t, thereby recording the recording medium. The recording apparatus according to claim 1, wherein the width is obtained. 3. A recording apparatus for performing recording by moving a recording head in a predetermined direction on a recording medium, comprising: a first recording head and a second recording head, wherein each of the recording heads has an end of the recording medium. When the two types of recording media, the first recording medium and the second recording medium, are fed, the first recording head moves over the first recording medium. Moving, the second recording head moves on the second recording medium, and the recording medium end detecting means detects the end of each of the recording media at the time of this movement, and adjusts the width of each of the recording media. A recording device characterized in that it is obtained. 4. The apparatus according to claim 3, wherein the first recording head and the second recording head are driven asynchronously.
The recording device according to claim 1. 5. When the second recording medium is fed while the first recording head is recording on the first recording medium,
5. The recording apparatus according to claim 4, wherein a recording medium end detecting means provided in the second recording head detects an end of the second recording medium and calculates a recording medium width. 6. Each of the recording heads has a recording element row in which a plurality of recording elements are arranged, and the recording elements generate bubbles in the ink using thermal energy, and the ink is generated by the pressure of the generation of the bubbles. 2. The method according to claim 1, wherein the discharging is performed.
6. The recording device according to any one of claims 1 to 5.