JP3176159B2 - Inkjet recording head, inkjet cartridge using the recording head, and recording apparatus equipped with the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording head detachable from an ink jet recording apparatus and detachable from an ink container, a small ink jet cartridge, and an ink jet recording apparatus equipped with the same.

[0002]

2. Description of the Related Art Today, various recording methods have been developed. Among them, an ink jet recording method in which ink is ejected from an ejection port in accordance with a recording signal to perform recording is intended to reduce the size and noise of the apparatus. Has been widely used in recent years because of its ease of use.

Conventionally, in an ink jet recording apparatus, a recording head having a plurality of nozzles is mounted on a carrier, and while the carrier is conveyed in a direction substantially perpendicular to a recording sheet conveying direction, ink is ejected from the nozzles to perform recording. And a line type recording method in which a recording head having a plurality of nozzles is arranged so that the nozzle arrangement direction is substantially perpendicular to the recording sheet conveyance direction, and ink is ejected from the nozzles while recording sheets are conveyed to perform recording. . However, in both cases, it is necessary to supply the consumed ink to the print head in a short time, and to avoid supplying the large current to the print head which is necessary when many nozzles are driven at the same time. In order to avoid simultaneous ejection, the ejection timing is sequentially shifted for each nozzle, or the nozzle is divided into a plurality of blocks, and the ejection is sequentially shifted for each block.

However, while transporting the carrier,
Alternatively, since the ink is ejected from each nozzle while the recording sheet is being conveyed, the deviation of the ejection timing is the deviation of the recording apparatus when driven in block units.

Conventionally, when a drive signal is applied to each of the nozzles # 1 to #m at the timing shown in FIG. 14 to discharge ink, the displacement tm of the discharge timing and the carrier transport speed V = R / t cy
By arranging the respective nozzles so that the nozzle row is inclined by d = V × tm with respect to the cle, the deviation (d in FIG. 13) in the recording as described above is corrected to perform the recording as shown in FIG. Had achieved.

FIGS. 16 (a) and 16 (b) show an example of an ink jet cartridge disposed on a carrier when the nozzle row is inclined by a predetermined angle from a direction perpendicular to the scanning direction of the carrier, from the nozzle surface side. It is a schematic diagram.

In FIG. 16A, an ink jet cartridge in which a recording head 200 having ejection ports 5 arranged in a line and an ink tank (ink container) 201 are mounted on a carrier 203, is shown in FIG. Are the scanning directions X ₁ and X ₂ of the carrier 203 and the carrier 2
03 is aligned with the long direction, but the arrangement of the ink jet cartridge on the carrier 203 is inclined with respect to the scanning direction of the carrier 203 as shown in FIG. Are tilted by a predetermined amount.

On the other hand, in FIG. 16B, the arrangement of the ink jet cartridge on the carrier 203 matches the longitudinal direction of the carrier, but the longitudinal direction of the carrier 203 is different from the scanning direction of the carrier. As a result, the ejection port array is inclined by a predetermined amount.
In FIGS. 15A and 15B, Xa indicates the direction of attachment and detachment of the recording head and the ink tank.

FIG. 16C shows the above-mentioned FIG.
5A and 5B are diagrams showing the inclination relationship of the nozzle arrangement of the recording head shown in FIGS. 6A and 6B when viewed from the back of the head toward the recording medium, and the nozzle row direction is θ from a right angle to the carrier transport directions X1 and X2. Only, the direction Xa of attachment and detachment of the head and the ink container.
Is inclined by θ. When the direction of attachment / detachment to / from the head / ink container is inclined by θ with respect to the carrier transport direction, the spread of the head / ink container in the lateral direction with respect to the carrier transport direction increases by L sin θ where L is the total length of the head / ink container. Will do. For example, L = 60
mm and θ = 1 degree, the increase is about 1 mm, and it is difficult to reduce the size of the carrier and the size of the recording apparatus in the above arrangement.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems, and an object of the present invention is to provide a smaller inkjet recording apparatus even when a nozzle row is inclined by a predetermined amount.

[0011]

Means for Solving the Problems To solve the above problems,
In the present invention, the ink is ejected from a plurality of ejection ports.
An ink jet recording head for recording on a recording medium,
Ink that is detachable from the recording head and is supplied to the recording head
Recording apparatus having an ink container capable of storing ink
Inkjet mounted on a reciprocating carrier
In the cartridge, the recording head and the ink container
The attachment / detachment direction is parallel to the carrier conveyance direction.
And arranged in a plane orthogonal to the carrier conveyance direction.
Make sure that multiple outlets are
And features. According to the present invention, a recording head / ink
Perpendicular to the carrier transport direction when the containers are connected
Keeping the width in the direction minimum
Can be achieved.

[0012]

【Example】

[First Embodiment] An embodiment of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a perspective view showing a recording apparatus according to an embodiment of the present invention. In the figure, a carrier 203 is mounted with a head cartridge 202 in which a recording head 200 constituting a recording unit and an ink container 201 are connected. One end of the carrier 203 on the recording head 200 side is fitted to a lead screw 213 rotatably attached to the chassis 1 so as to be slidable in the axial direction. The guide is slidably fitted in a guide rail 2 formed in the chassis 1 in a direction parallel to the axial direction of the lead screw 213. The carrier 203 is configured to be able to reciprocate in the axial direction with the rotation of the lead screw 213 while keeping its posture constantly constant.

That is, the lead screw 213
As shown in the figure, a lead screw gear 257 fixed to the left end of the screw and a pinion gear 256 fixed to the output shaft of the carrier motor 255 mesh with each other, and spirally form the lead screw 213 at a predetermined pitch. A lead pin (not shown) attached to the carrier 203 fits into the formed guide strip. Accordingly, when the lead screw 213 rotates in accordance with the forward and reverse drive of the carrier motor 255, the carrier 203 reciprocates.
The details of the scanning of the carrier 203 will be described later.

A flexible cable 211 transmits a print signal from an electric circuit to be described later to the recording head 200, and is positioned and held on the pinch roller frame 11 by the flexible cable holder 16.

The recording head 200 is driven in synchronization with the reciprocating movement of the carrier 203 to eject ink in accordance with a recording signal, thereby performing one-line recording on the recording material 3. That is, the recording head 200 includes a fine liquid ejection port (orifice), a liquid path, and an energy operation section provided in a part of the liquid path, and an energy for generating droplet forming energy to act on the liquid in the operation section. Generating means.

As an energy generating means for generating such energy, a recording method using an electrothermal transducer such as a piezo element or the like, an electromagnetic wave such as a laser is irradiated to generate heat, and droplets are discharged by the action of the heat. There are a recording method using an energy generating means and a recording method using an energy generating means for discharging a liquid by heating the liquid with an electrothermal converter such as a heating element having a heating resistance.

Among them, a recording head used in an ink jet recording method in which a liquid is ejected by thermal energy has a high density of liquid ejection ports for ejecting a recording liquid to form ejection droplets. Because it is possible, it is possible to record at high resolution. Among them, a recording head using an electrothermal transducer as an energy generating means can easily be made compact, and has the advantages of IC technology and micro-machining technology, which have recently made remarkable progress in technology in the field of semiconductors and markedly improved reliability. This is advantageous because it can be used for two reasons, high-density mounting is easy, and the manufacturing cost is low.

When one-line recording is performed by scanning the carrier 203, the recording material 3 is conveyed by one line by the conveying means and the next line is recorded.
Is carried out by a rotating pair of a conveying roller 4 and a pinch roller 8 which presses against the conveying roller 4, and a rotating pair of a discharge roller 7 and a spur 6 which comes into contact with the discharging roller.

More specifically, the recording material 3 whose recording surface is opposed to the discharge port surface of the recording head 200 is
The sheet is conveyed to a recording position as needed by being pressed against the conveyance roller 4 by a pinch roller 8 and appropriately rotating the conveyance roller 4 by a paper feed motor 5. After the recording, the recording material 3 is pressed against the discharge roller 7 by the spur 6, and the discharge roller 7 rotates to discharge and convey the recording material 3 out of the apparatus.

The transport roller 4 and the discharge roller are driven by a paper feed motor 5, and the driving force is transmitted by a reduction gear train 15.

Reference numeral 14 denotes a paper sensor, and the recording material 3
Is detected.

FIG. 2 is a schematic perspective view showing a head cartridge section and a carrier section of the recording apparatus according to the embodiment of the present invention. In the figure, reference numeral 200 denotes a recording head for discharging ink by an electric signal; 201, an ink container for storing ink and supplying it to the recording head 200;
Denotes a carrier provided in the main body of the printing apparatus for holding and scanning the print head 200 and the ink container 201; 204, a head lever for holding and releasing the print head; 205, an ink tank lever for attaching and detaching the ink container 201;
7, a head holder spring for fixing the recording head 200 to the carrier 203;
And a head cartridge section and a carrier section of the recording apparatus.

The recording head 200 has a substrate on which a plurality of electrothermal transducers for generating thermal energy used for ink ejection and a drive circuit for driving the same are formed, and the plurality of electrothermal transducers are provided on the substrate. A discharge port and a liquid path corresponding to each of the conversion elements, and a top plate for forming a common liquid chamber communicating with each liquid path are laminated, and further, a signal is supplied from the recording apparatus main body to the drive circuit. Electrical contacts are provided. Further, a sensor for detecting the state of the head from the printing apparatus main body can be provided in the print head 200. Specifically, a temperature detection sensor for detecting a temperature near the electrothermal transducer, an ink Ink supply sensor and an ink remaining amount detection sensor that detects when ink is exhausted from the common liquid chamber, or
A head type discriminating sensor for specifying the type of the head cartridge when the ink cartridge or the type of the head in the head cartridge is used while being exchanged.
The signals from these sensors are judged by the main body of the recording apparatus, and the signals applied to the electrothermal transducer can be controlled to optimize the printing state. Then, the recording head configured as described above is mounted on the recording apparatus such that the ejection port surface on which the ejection ports are arranged faces the recording medium.

Next, the recording head 200 is moved to the carrier 203.
A method for mechanically and electrically connecting the devices will be described. FIG. 3 is a cross-sectional view showing the connection portion of the recording head 200 to the carrier 203 as viewed from the direction of FIG. 2A, and FIG. 4 is a schematic perspective view showing the order of attachment. 4, a positioning pin 225 is fixed to the carrier 203 and engages with a hole provided in the recording head 200 to perform positioning in the directions of arrows a and b in FIG. A stopper for receiving the pressed recording head 200, 211 is a flexible cable for electrically connecting the recording apparatus main body and the recording head 200, 211a
Are positioning holes a provided on the flexible cable 211, and 211b are positioning holes b provided on the flexible cable 211, and 212 is a flexible cable 211.
Flexible cable 2 sandwiched between the carrier 203
11, a flexible cable pat that elastically supports 11.
212a is a positioning hole a provided in the flexible cable pad 212, 212b is a positioning hole b provided in the flexible cable pad 212, and 212c is an ink barrier for preventing ink from entering the contact portion.
Denotes a head contact portion provided on the recording head 200 and electrically connected to a heater portion in the recording head 200;
Numerals 27a are positioning holes a and 227b provided in the head contact portion 227. Positioning holes b and 227c are provided in the head contact portion 227. Stopper abutting places where end faces of the stopper 226 abut.

The recording head 200 has a head holder spring 20
7 is pressed in the direction a via a lever (not shown), and its position is uniquely determined by the engagement of the hole provided in the recording head 200 with the positioning pin 225 and the interference with the stopper 226. In this way, the recording head 200 and the carrier 203 are mechanically connected. Also,
Head contact portion 22 provided on recording head 200
A plurality of electrical contacts are provided at opposite positions on the end surfaces of the flexible cable 211 and the flexible cable 211. By pressing these with a predetermined pressure, the recording apparatus main body and the recording head 200 are electrically connected. At this time, since a plurality of electrical contacts need to be pressed at once, a flexible cable pad 212 made of an elastic material is placed in the pressing portion in order to press them uniformly. The flexible cable pad 212 is made of, for example, silicon rubber or the like, and has a plurality of protrusions at positions corresponding to the above-mentioned electrical contacts, so that pressing stress is concentrated on the contacts. Further, the above-mentioned electrical contacts provided on the flexible cable 211 may be formed in a protruding shape in order to further concentrate the stress when pressed and to secure the connection.

The reaction force generated when the recording head 200 is pressed is controlled by the head holder spring 20 holding the recording head 200.
7, the position of the recording head 200 does not shift due to the reaction force from the flexible cable pad 212.

The carrier 203, the flexible cable pad 212, the flexible cable 211, the head contact portion 227 and the head cartridge 203
Are required to be accurately positioned with respect to each other in order to obtain reliable electrical connection and good recording quality, and are configured as follows. That is, based on the two positioning pins 225 of the carrier 203, one of the positioning pins 225 is positioned at the positioning hole a212a and the positioning hole a2.
11a and the positioning hole a227a, and the other positioning pin 225 is positioned in the positioning hole b212.
b, positioning hole b211b and positioning hole b227b
4a and 4b. By pressing the stopper 226 from the direction shown in FIG. 3A until the end surface of the stopper 226 comes into contact with the stopper contact point 227c of the head contact portion 227, the position of the recording head 200 in the direction shown in FIG. 4C can be determined accurately.

As shown in FIG. 5, the stopper 226 is formed to have a predetermined inclination θ with respect to the transport directions X1 and X2 of the carrier 203, and when the recording head 200 is positioned on the carrier 203,
The nozzles # 1 to #m arranged at a constant pitch P of 0 are configured to incline by a predetermined amount d with respect to the length L of the nozzle. Further, the interval G between the stoppers 226 is set to be larger than the nozzle height H so that the accuracy of the predetermined amount d is maintained.

Next, the configuration and electric circuit of an information processing apparatus incorporating the recording apparatus according to this embodiment will be described.

FIG. 6 is a schematic perspective view showing the appearance of an information processing apparatus 400 incorporating a recording apparatus according to the present embodiment. In the figure, reference numeral 401 denotes the above-described printer unit;
Reference numeral 2 denotes a keyboard unit provided with keys for inputting characters, numerals, and other characters, keys for giving various instructions, and the like, and a display unit provided with a 403 display.

FIG. 7 is a block diagram showing an electric circuit configuration of the information processing apparatus according to this embodiment. In the figure,
Reference numeral 501 denotes a controller that performs main control. Reference numeral 502 denotes a microcomputer-type C that executes a certain procedure.
A PU 503 is a RAM provided with an area for expanding text data and image data, a work area, and the like.
Is a ROM that stores a program corresponding to the above procedure and other fixed data such as font data, and 505 is a CPU.
502 to create an execution cycle or the printer unit 401
And 506, an interface unit for connecting signals from the CPU 502 to peripheral devices.

Reference numeral 507 denotes a controller of the printer unit 401. Reference numeral 508 denotes presence / absence and type of the print head 200, an output value of a sensor for detecting the temperature of the print head 200, and presence / absence of ink in the ink tank 201. A head detection unit for detecting information of the printhead such as an output of a sensor; 509, a line buffer for storing print data of the printhead 200; 510, a head driver for sending a print signal, power, etc. to the printhead 200;
a, b, and c are motor drivers for transmitting signals and electric power necessary for driving the carrier motor 255, the paper feed motor 5, and the automatic paper feed motor 323, respectively. 512 is a home position sensor 270, the paper sensor 14, Paper feed initial sensor 320a, paper feed switching sensor 32
0b, etc., is a sensor detection unit that detects the output of the sensor. Reference numeral 404 denotes an external storage device such as an FDD, an HDD, or a RAM card. Reference numeral 405 denotes an external interface for communicating with another information processing device or controlling a peripheral device by directly connecting to an internal bus. It is. Although not included in the block diagram of FIG. 7,
In addition, there is a power supply unit for supplying power to the above electric circuit, such as a rechargeable battery, a disposable dry battery, or a converter for an AC power supply when the information processing apparatus body is fixed and used. and so on.

The recording on the recording material (paper) 3 is performed by the recording apparatus section by the above-described electric circuit configuration. The outline of the discharge control of the recording head will be described below with reference to timing charts shown in FIG. .

FIG. 8 is a timing chart of the ejection of the recording head 200 for achieving the recording shown in FIG. 9 while conveying the carrier 203 in the X1 (FIGS. 1 and 5) direction.

Discharge is sequentially performed in the order of nozzles # 1 to #m. t1 represents the time difference between the ejection of the nozzles # 1 and # 2, tm-1 represents the time difference between the ejection of the nozzles # 1 and #m, and tcycle represents the ejection cycle of the same nozzle. Normally, it is desirable that the time difference between the discharges of the adjacent nozzles be constant. That is, tm-1 = (m-1) × t1.
Here, the speed of the carrier 203 in the X1 direction is R / tcyc.
By performing ejection at tm-1 = d × tcycle / R while transporting the nozzle, the nozzle inclination d (FIG. 5)
And the time difference tm-1 between the ejection of the nozzle and the ejection of the nozzle are cancelled, thereby realizing the printing without deviation (tilt) as shown in FIG. When printing is performed while transporting the carrier 203 in the X2 direction, the ejection order may be reversed, and the printing may be performed sequentially in the order of #m to # 1.

FIG. 10A shows the recording head 20 of this embodiment.
FIG. 4 is a schematic diagram illustrating a combined state of the ink container 201 and the ink container 201 from the nozzle surface side. The ink container 201 is attached to the recording head 200 attached to the carrier 203 by the lever 205 in the Xa direction. FIG. 10B is a table view showing the recording sheet surface showing the inclination relationship in each direction, and the ink container attaching / detaching direction Xa is the carrier transport direction X during printing.
1 and X2, the nozzle array direction is inclined by an angle θ from a direction perpendicular to the ink container attaching / detaching direction Xa.

The amount d of inclination of the nozzle is t for averaging the energy applied to the recording head and the supply of ink.
_{m-1 = t cycle / 2~t} cycle is desirable, therefore d =
R / 2 to R are desirable. Normal nozzle pitch P = R
In many cases, the inclination amount d = P / 2 to P
Is desirable.

FIG. 10C shows the relationship between the head cartridge unit and the carrier after the ink container 201 is attached. According to the present invention, the nozzle row is inclined by a predetermined amount without enlarging the carrier or the recording apparatus. Can be
A record without deviation can be achieved. [Other Embodiments] FIG. 11 shows another embodiment according to the present embodiment. As shown in FIG. 11A, the coupling surface between the recording head 200 and the ink container 201 is not perpendicular to the attaching / detaching direction Xa. It may be parallel to the column direction.

In the above-described embodiment, the convex portion of the ink coupling portion is provided on the recording head 200. However, a convex portion may be provided on the ink container 201 side as shown in FIG.

Although the above-described embodiment has been described with respect to a recording head that performs single-color recording, the present invention has a greater effect when a plurality of colors are recorded by a plurality of recording heads / ink containers.

FIGS. 12A to 12C are perspective views schematically showing aspects of an ink tank of an ink jet head cartridge to which the present invention can be applied.

The ink tank shown in each figure is an ink tank that can be mounted upside down on the carriage of the printing apparatus, and is connected to the ink tank section to supply ink to the print head. Supply port (not shown), and an air communication port (not shown) for communicating the inside of the ink tank with the outside air. Further, a claw portion 1002 serving as a slip stopper when removing the ink tank from the recording device, and a notch portion 1 for engaging with a convex portion on the recording device side when the ink tank is mounted on the recording device.
001 corresponds to the upside down of the ink tank.
It is provided in two places.

FIG. 12A shows that the above-mentioned cutout portion is disposed inside the side wall of the ink tank, so that the convex portion on the recording device side can be protected from the outside when mounted on the recording device.

FIGS. 12B and 12C show the case where the side wall of the ink tank is not provided. Although the above-mentioned protection effect is not obtained, the manufacture of the ink tank can be facilitated.

[0046]

As described above, according to the present invention,
Even in the case of eliminating the deviation of the recording position by inclining the nozzle row of the recording head, the arrangement direction of the plurality of nozzles is arranged to be inclined from a right angle with respect to the attaching and detaching direction of the recording head and the ink container, There is the effect that the direction of attachment / detachment of the ink container and the carrier transport direction are matched, the projected area in the carrier transport direction in the combined state of the recording head and the ink container is kept to a minimum, and the inkjet recording apparatus can be downsized.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of an ink jet recording apparatus according to the present invention.

FIG. 2 is a schematic perspective view showing a carrier unit of the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 3 is a schematic perspective view showing a partially enlarged view of a carrier part of the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 4 is a schematic perspective view showing a method of connecting a carrier unit and a head cartridge unit of the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 5 is a schematic diagram showing a method for positioning a carrier unit and a head cartridge unit in the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 6 is a schematic perspective view showing an information processing apparatus incorporating the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 7 is a block diagram showing an electric circuit configuration of an information processing apparatus incorporating the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 8 is a timing chart showing ejection timing of the recording head of the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 9 is a view showing a recording result of the first embodiment of the ink jet recording apparatus according to the present invention.

FIG. 10 shows a first example of the ink jet recording apparatus according to the present invention.
FIG. 4 is a schematic diagram illustrating a mounting / removing direction of a carrier unit, a recording head, and an ink container according to the embodiment.

FIG. 11 is a schematic view showing a mounting / removal direction of a carrier unit, a recording head, and an ink container in another embodiment of the ink jet recording apparatus according to the present invention.

FIG. 12 is a view schematically showing an embodiment of a tank of an ink jet cartridge applied to the present invention.

FIG. 13 is a diagram showing an arrangement of nozzles of a recording head as a background art.

FIG. 14 is a timing chart showing ejection timing of a recording head as a background art.

FIG. 15 is a diagram showing a recording result as a background art.

FIG. 16 is a schematic diagram illustrating a mounting / removal direction of a carrier unit, a recording head, and an ink container of an ink jet recording apparatus as a background art.

[Explanation of symbols]

 Reference Signs List 1 chassis 2 guide rail 3 recording material 4 transport roller 5 paper feed motor 6 spur 7 discharge roller 8 pinch roller 9 pinch roller spring 10 pinch roller holder 11 pinch roller frame 12 release angle 13 release lever 14 paper sensor 15 reduction gear train 150 pump Unit 200 Recording head 201 Ink container 202 Head cartridge 203 Carrier 204 Head lever 205 Tank lever 207 Head holder spring 208 Tank case 210 Lead pin spring 211 Flexible cable 211a Positioning hole a 211b Positioning hole b 212 Flexible cable pad 212a Positioning hole a 212b Positioning hole b 212c Ink barrier 213 Lead screw 213a Positioning hole a 213b Decision hole b 220 Ink connection part (head) 221 Ink connection part (ink container) 225 Positioning pin 226 Stopper 227 Head contact part 227a Positioning hole a 227b Positioning hole b 227c Stopper contact point 228 Carrier bearing 1 229 Carrier bearing 2 255 Carrier Motor 256 Pinion gear 257 Lead screw gear 270 HP sensor 320a Paper feed initial sensor 320b Paper feed switching sensor 323 Automatic paper feed motor 400 Information processing device 401 Printer unit 402 Keyboard unit 403 Display unit 404 External storage device 405 External interface 501 Controller 502 CPU 503 RAM 504 ROM 505 Timer 506 Interface unit 507 Controller 508 Head detection unit 5 9 line buffer 510 the head driver 511 a motor driver 512 sensor detection unit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41J 2/05 B41J 2/175

Claims (5)

(57) [Claims] 1. A discharging ink from a plurality of ejection ports for chromatic and ink jet recording head for recording on a recording medium, detachable with the recording head and an ink container capable of storing ink to be supplied to said recording head With the recording device
Inkjet car mounted on a carrier that moves backward
In the cartridge, a plurality of ejection ports are arranged such that a direction in which the recording head and the ink container are attached and detached is parallel to a transport direction of the carrier, and an array direction is inclined with respect to a plane perpendicular to the transport direction of the carrier. An ink jet recording cartridge characterized by being made. 2. The method according to claim 1, wherein the amount of the inclination is ＰP to P in the conveying direction of the carrier with respect to the length L of the ejection port array of the recording head.
The ink jet recording cartridge according to claim 1, wherein (P: discharge port pitch). 3. A having a plurality of discharge ports arranged in a row, as well as have a connecting portion between the ink tank, the forward recording device
In an ink jet recording head mounted on a carrier that moves backward, the direction of attachment / detachment of the recording head and the ink container is determined by the direction of the carrier.
Parallel to the transport direction of the
So that the array direction is inclined with respect to the plane perpendicular to the
Characterized in that a number of discharge ports are provided.
Jet recording head. 4. An ink jet recording head that discharges ink from a plurality of discharge ports to record on a recording medium, an ink container that is detachable from the recording head and that can store ink to be supplied to the recording head, In an ink jet recording apparatus having a head and a carrier mounted and moved with an ink container, a direction in which the recording head and the ink container are attached and detached is parallel to a direction in which the carrier is transported, and is orthogonal to a direction in which the carrier is transported. An ink jet recording apparatus, wherein a plurality of discharge ports are arranged so that an arrangement direction is inclined with respect to a surface to be formed. 5. The amount of the inclination is ＰP to P (P: P) in the carrier conveying direction with respect to the length L of the ejection port array of the recording head.
5. The discharge port pitch).
3. The ink jet recording apparatus according to claim 1.