JPH05217B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid jet recording method, and particularly to a liquid jet recording method in which recording is performed by flying a recording liquid in the form of droplets.

Non-impact recording methods have recently attracted attention because the noise generated during recording is so small that it can be ignored. Among these, the so-called inkjet recording method (liquid jet recording method), which is capable of high-speed recording and can record on so-called plain paper as the recording material without the need for special fixing treatment, is an extremely powerful recording method. Various methods have been devised and some have been improved and commercialized, while others are still being worked on to put them into practical use.

In this inkjet recording method, recording is performed by causing droplets of a recording liquid called ink to fly and adhere to a recording member. There are several methods for controlling the flying direction of the droplets, but they can be broadly classified into two methods. These methods include, for example, one method is USP3060429, USP3596275,
The other method is published in USP3298030, USP3416153, etc., and the other method is USP3683212, USP3747120, USP3946398.
It is described in detail in publications such as .

To summarize here, the former method uses a continuous vibration generation method to generate a droplet flow with a controlled amount of charge.
By flying the generated droplet flow with a controlled amount of charge between deflection electrodes to which a uniform electric field is applied, recording can be performed on a recording member, or a nozzle and a ring-shaped charged An electric field is applied between the electrodes and a continuous vibration generation method is used to generate droplets, which are atomized and recorded.

The latter is called drop-on-demand.
on demand) type liquid jet recording method,
Since recording is performed by making all of the generated droplets adhere to the surface of the recording member, it has recently been attracting attention because it does not require collection of liquid unlike other methods.

In this method, an electrical recording signal is applied to a piezo vibrating element attached to a recording head that has an ejection orifice that ejects liquid as droplets for recording, and this electrical recording signal is transmitted to the mechanical vibration of the piezo vibrating element. Recording is performed by causing droplets to be ejected from the orifice and attached to the recording member in accordance with the mechanical vibration instead of vibration.

However, while each of the conventional systems has its own advantages, there are also points that are essential or that could be solved.

That is, in the former method, the direct energy for generating a droplet or a droplet stream is electrical energy, and the deflection control of the droplet is also controlled by an electric field. For this reason, a high voltage is required to generate droplets or a droplet stream, and it is difficult to create a multi-orifice recording head, especially at high density, making it unsuitable for high-speed recording. It is complicated, and there are problems such as electrical control of the flying direction of the droplet flow at high speed and difficulty, and satellite dots are likely to occur on the recording member.

The method of atomizing the ejected droplets is difficult to precisely and precisely control the atomization state, fogging occurs in the recorded image, and it is difficult to use a multi-orifice recording head, making it unsuitable for high-speed recording. There are various problems such as:

In the latter method, there are problems in processing the recording head, and it is extremely difficult to miniaturize the piezoelectric vibrating element with the desired resonance number, so it is difficult to miniaturize the recording head and make it multi-orifice. It is difficult, and because droplets are ejected and ejected using the mechanical energy of the mechanical vibration of the piezo vibrating element, it is not suitable for high-speed recording, and the generation of satellite dots and fogging of recorded images is relatively common. It has the following disadvantages.

As described above, the conventional method has several problems in terms of structure, high-speed recording, recording head manufacturing, multi-orifice design, especially high-density multi-orifice design, generation of satellite dots, and fogging of recorded images. However, there are essential shortcomings and points that can be improved.
There was a restriction that it could only be applied to applications that took advantage of its advantages.

In response, the present applicant has proposed a liquid jet recording method based on a completely new concept that can solve the above problems in Japanese Patent Application No. 52-118798 (Japanese Patent Application Laid-open No. 54-59936). did.

Japanese Patent Application No. 52-118798 (Japanese Unexamined Patent Publication No. 54-59936)
In order to make the most of the recording method using a laser beam disclosed in A plurality of flow channels are arranged in an array, each serving as a heat acting portion at a position where the applied force is effectively transmitted toward the discharge orifice, and each of these multiple flow channels supplies liquid to each channel. A multi-orifice recording head having a structure communicating with a common liquid chamber for the recording head is applied. Since the structure of such a recording head is much simpler than that of conventional recording heads, the flow channels can be arranged at a density comparable to the resolution of the recorded image.

As described above, the recording head described in Japanese Patent Application No. 52-118798 (Japanese Unexamined Patent Publication No. 54-59936) enables high-density and high-speed image recording.

However, in the conventional liquid jet recording method,
Since it is not suitable for driving the above-mentioned recording head capable of high-density and high-speed recording, it is desired to develop a liquid jet recording method that is optimal for the above-mentioned recording head.

Particularly, for the recording head capable of high-density and high-speed recording, it is necessary to supply a large amount of recording information at high speed in order to improve the throughput of the entire recording system. Furthermore, if a large amount of recorded information is received as pattern information from a host computer, the time required to transfer the recorded information increases, so it is required to be able to handle transfer using code information.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to perform high-density and high-speed image recording using a recording head that causes a sudden change in the state of the liquid to cause the liquid to be ejected from an ejection orifice to form flying droplets. An object of the present invention is to provide a liquid jet recording method that can perform the following.

In order to achieve the above object, the liquid jet recording method of the present invention includes a plurality of ejection ports for ejecting liquid, and is provided for each corresponding ejection port, and is based on the formation of bubbles in the liquid by heat. A liquid jet recording method in which recording is performed using a recording head having a heat converter that supplies thermal energy to the liquid that is used for ejecting the liquid from the ejection port to form flying droplets. , inputting the recording information generated by the recording information generating means into an interface means electrically coupled to the recording information generating means that generates the recording information to be recorded, and inputting the recording information input into the interface means. Converting the recording data into recording data suitable for driving the recording head, storing one line of recording data alternately in a buffer means capable of storing two lines of recording data, and storing the recording data in the buffer means in accordance with a start timing. one line of the recorded data is alternately and sequentially outputted, and based on the sequentially outputted recorded data, a driving means applies thermal energy capable of forming bubbles in the liquid to each of the recording heads. It is characterized in that it is generated in a heat converter, thereby forming flying droplets based on the recording data at each corresponding ejection port.

Furthermore, the liquid jet recording method of the present invention includes a plurality of ejection ports for ejecting liquid, and a plurality of ejection ports provided for each of the corresponding ejection ports. A liquid jet recording method that performs recording using a recording head having a heat converter that supplies thermal energy to the liquid to be used for ejecting it from the liquid to form flying droplets, the recording information to be recorded. Recording information including code information and pixel information generated by the recording information generating means is inputted to an interface means electrically coupled to the recording information generating means that generates the recording information, and the recording information input to the interface means temporarily stored in a memory means, generating pattern information by a pattern generating means based on the code information stored in the memory means, and storing the pattern information generated by the pattern generating means and the memory means. Converting the stored pixel information into recording data suitable for driving the recording head, and alternately storing one line of recording data in a buffer means capable of storing two lines of recording data, and determining the start timing. one line of the recorded data stored in the buffer means is alternately and sequentially outputted according to the buffering means, and based on the sequentially outputted recorded data, the driving means generates heat capable of forming bubbles in the liquid. The present invention is characterized in that energy is generated in each of the heat converters of the recording head, thereby forming flying droplets at each corresponding ejection port based on the recording data.

The present invention will be specifically described below with reference to the drawings.

An outline of the recording principle related to the present invention will be explained with reference to FIG.

FIG. 1 is an explanatory diagram for explaining the recording principle according to the present invention.

A desired pressure is applied inside the nozzle 101 by a suitable pressurizing means such as a pump, and the pressure P is such that it is discharged by the discharge orifice 102 or is not discharged from the orifice 102 by itself. A liquid 103 for recording is being supplied. Now, orifice 1
Liquid 1 in the nozzle 101 at a distance from 02
When 03a receives the action of thermal energy at a portion of width Δ (thermal action part), the liquid 103b existing within the width of the nozzle 101 changes depending on the amount of applied thermal energy due to a sharp state change of the liquid 103a.
Part or all of the liquid is ejected from the orifice 102 and flies in the form of droplets in the direction of the recording member 104, and adheres to a predetermined position on the recording member 104.

To describe this point more specifically, the heat acting part Δ
When thermal energy is applied to the liquid 103a in the heat acting part Δ, a sudden change in state occurs in the liquid 103a in the heat acting part Δ, including the generation of bubbles, and an action based on the change in state occurs. Due to the force, part or all of the liquid 103b existing within the width is discharged from the orifice 102. As a result, the action of thermal energy is stopped or the liquid 10 is discharged from the liquid supply side toward the discharge orifice 102.
If the movement of 3 occurs or if the amount of liquid discharged is instantly replenished into the heat acting part Δ, the liquid 10
The bubbles generated in 3a are instantly reduced in volume and either disappear or are reduced to an almost negligible volume.

The discharged amount of liquid is caused by the contraction of the volume of bubbles, by capillary action in the nozzle 101, by forced pressure, or by a combination of two or more of these. The action replenishes the inside of the nozzle 101.

The size of the formed droplet 105 depends on the amount of thermal energy, the width Δ of the portion 103a affected by the thermal energy of the liquid present in the nozzle 101, the volume of the liquid 103a within Δ, and the nozzle 101. If the nozzle 101 is a cylinder, then the average inner diameter d at the width part, or if the nozzle 101 is other than a cylinder, the average cross-sectional area at the width part, from the position of the orifice 102 to the position where thermal energy is applied. , the pressure P applied to the liquid, the specific heat, thermal conductivity, coefficient of thermal expansion, heat of vaporization, etc. of the liquid. Therefore, by changing any one or more of these elements that can be controlled, the size of the droplet 105 can be easily controlled, and the size of the droplet 105 can be adjusted to any desired diameter. It is possible to record on the recording member 104 with a spot diameter of . In particular, the ability to arbitrarily change the distance means that the position of application of thermal energy during recording can be changed as desired, without changing the amount of thermal energy generated per unit time. The size of the droplets 105 formed can be arbitrarily controlled during recording, and a recorded image with gradation can be easily obtained.

In the present invention, the heat acting part Δ of the nozzle 101
Thermal energy acting on the liquid 103a may be provided or generated continuously over time, or may be provided or generated discontinuously by turning on and off in pulses, but continuous recording is not possible. When this is done, in order to improve the droplet generation frequency, it is preferable to repeatedly supply or generate droplets discontinuously in a pulsed manner.

In the recording principle applied to the present invention, by applying thermal energy to the liquid in the heat acting portion Δ temporally discontinuously, it is possible to cause the applied thermal energy to carry recorded information. That is, by applying thermal energy to the liquid 103a in the heat action section Δ in accordance with the recorded information signal, a state change is caused in the liquid 103a in the heat action section Δ in accordance with the signal; Any of the formed droplets 105 can carry recording information, and therefore all of them can be stored on the recording member 104.
It is possible to record by attaching it to Clogged,
A so-called drop-on demand recording method can be implemented.

When applying thermal energy to the liquid 103a in a pulsed manner, the amplitude and width of the pulse at this time can be easily selected and changed as desired, so the size and unit of the droplet can be adjusted. The number of droplets generated per time can be changed very easily.

Generating thermal energy based on laser beam irradiation and causing the liquid to undergo a sharp state change, for example, a state change including the generation of bubbles due to vaporization, is to A heat converter that absorbs the laser beam and generates heat, or a heat converter that absorbs the laser beam and generates heat is provided in the heat action part Δ, and the thermal energy generated by the heat converter is transferred to the liquid in the heat action part Δ. This is achieved by making it work. The heat converter may be provided in direct contact with the inner wall surface or outer wall surface of the heat acting part Δ of the nozzle 101, or may be provided with a substance with good heat conduction efficiency interposed therebetween, but any of the above may be used. In this case, the structure and arrangement are such that the thermal energy generated from the heat converter can be effectively applied to the liquid 103a.

Alternatively, at least the wall of the heat acting portion Δ of the nozzle 101 may be made of a heat converter. The heat converter is selected depending on the wavelength of the laser beam to be irradiated, and is made of a material that has an absorption region in the wavelength region of the laser beam. If such a laser beam absorbing material has film properties and adhesive properties, it is sufficient to directly form a coating film on a predetermined portion of the outer wall of the heat acting portion Δ of the nozzle 101.
If the laser beam absorbing material alone does not have coating properties or adhesive properties or is weak, it can be mixed and dispersed in a suitable binder that has coating properties and adhesive properties and is heat resistant to form a coating film. good.

Many commonly known dyes and pigments can be used as the laser beam absorbing material. For example, when infrared rays are used as the laser beam, dyes and pigments can be used as infrared absorbing exothermic agents.

Next, one preferred embodiment of the liquid jet recording method of the present invention will be described in detail with reference to the drawings.

FIG. 2 is an explanatory diagram schematically shown to explain a preferred embodiment of the liquid jet recording method of the present invention.

In FIG. 2, a first laser beam emitted from a first laser oscillator 201 is guided to an entrance aperture of an acousto-optic modulator 202. In FIG. Modulator 202
At this time, the first laser beam is modulated in intensity according to the input of the recording information signal to the modulator 202.
The modulated first laser beam is reflected by a reflecting mirror 203.
The beam expander 204
The beam is bent in the direction and enters the beam expander 205. The first modulated laser beam is
The beam expander 204 expands the beam diameter while remaining parallel light. Next, the first laser beam whose beam diameter has been expanded is incident on the polygon 205. The polygon 205 is attached to the rotating shaft of a hysteresis synchronous motor 206 and rotates at a constant speed. The first laser beam swept horizontally by the polygon 205 is f-θ
The lens 207 connects the full-line high-density multi-orifice recording head 209 through the reflector 208.
The image is formed at a predetermined position of each nozzle of the nozzle row 210 aligned at the tip of the nozzle. Due to the imaging of the first laser beam on the nozzle row 210, the recording liquid in each nozzle is affected by thermal energy, and droplets of the recording liquid are ejected and flying from the orifice of each nozzle, causing the recording material to be recorded. Recording is performed on 211.
Recording liquid is supplied to each nozzle of the recording head 209 from a liquid storage tank 214 via a supply pipe 212 and a common liquid chamber provided inside a common liquid chamber member 213. The recording member 211 is in the form of a sheet in the figure, and recording is performed from a cassette 215 containing a large number of recording members 211 in synchronization with a recording signal, although not shown. It is fed by sheet feeding means commonly used in the field and conveyed over the drum 216 by sheet transport means.

On the other hand, the second laser beam oscillated by the second laser oscillator 217 has its optical path directed toward the beam expander 219 by the reflecting mirror 218, and thereafter similarly to the first laser beam, the polygon 205, f- The light passes through the θ lens 207 and the reflecting mirror 208, and is irradiated onto the nozzle of the recording head 209.
The second laser beam scans and irradiates the nozzle with energy that is less than enough to eject the recording liquid.

FIG. 2b is a schematic partial perspective view of the recording head 209 used in the apparatus of FIG. 2a, viewed from the ejection side, and FIG. 2c is a cross-sectional view.

On the front side of the recording head 409, there is a nozzle row 220 with an orifice density of 10/mm over a total length of 300 mm.
is provided.

An irradiation part 222 is provided on the upper surface of the nozzle row member 221 on which the nozzle row 220 is provided so that a laser beam is focused and irradiated on a predetermined position of each heat acting part of the nozzle 220.

The nozzle rows 220 form liquid flow paths 223 parallel to each other and isolated from each other in the nozzle row member 221, and a laser beam is irradiated from each orifice of each nozzle row 220 to a portion of the irradiation section 222 corresponding to each nozzle 220. Each time a droplet is ejected and flies toward the surface of the recording member 211.

Each of the liquid flow paths 223 communicates with a common liquid chamber provided inside the common liquid chamber member 213,
The structure and dimensions are such that liquid can be smoothly supplied from the common liquid chamber into the nozzle 220 as needed.

In order to provide a predetermined number of nozzles 220 at a desired pitch, the nozzle row member 221 includes a groove plate 224 in which grooves forming the fluid flow paths 223 are provided by an etching process in a number equivalent to the number of nozzles to be formed. , consists of a groove cover 225 provided with an irradiation surface 222 for irradiating a laser beam to each heat acting part of the nozzle 220, and the groove plate 224 and the groove cover 225 are formed using a suitable adhesive with high accuracy. and are joined together.

The structure of nozzle 220 is shown as a cross-sectional structure in FIG. 2c.

The irradiation part 222 is placed above the heat action part 227 provided at a predetermined position from the orifice 226, with dimensions, structure, and material determined so that the heat action part 227 is efficiently and effectively irradiated with the laser beam. It is provided.

In the nozzle structure shown in FIG. 2c, a groove is provided in a part of the groove cover 225 by a method such as etching or mechanical cutting to reduce the wall thickness and provide good transparency to the laser beam. Select the material and
A heat converter 2 which is coated for anti-reflection and has a function of absorbing a laser beam and generating heat on the bottom surface of the heat acting part 227 of the groove plate 224.
28 are provided.

Now, the first laser beam 229 is applied to the irradiation section 222.
When the laser beam is irradiated to the heat converter 228 so as to be focused through the laser beam, the heat converter 228 absorbs the laser beam and generates heat, and the heat acts on the liquid in the heat acting section 227 . The liquid subjected to the thermal action undergoes a steep state change, and droplets are ejected from the ejection orifice 226 due to the acting force based on the state change.

If the liquid filling the liquid flow path 223 absorbs the first laser beam and generates heat, causing a sufficiently rapid change in state, there is no need to provide the heat converter 228, and the irradiation unit 222 is not directed toward the laser beam 229. It is sufficient if it is made of a material with good transparency.

Furthermore, in the nozzle structure shown in FIG. 2c, the groove cover 225 and the irradiation section 222 are made of the same material; 222 and groove cover 224
It may be made of a different material.

However, as shown in the figure, it is preferable to use an integrated structure from the viewpoint of ease of construction and cost reduction.

The heat converter 228 may be provided on the irradiation section 222 side. In this case, it is advantageous if the irradiation section 222 itself is made of a heat converter, since the energy loss of the laser beam at the irradiation section 222 can be further reduced.

In addition, when the liquid in the heat effecting part 227 absorbs the laser beam and generates heat, the bottom surface of the heat effecting part 227 (the side opposite to the laser beam incident side) is used to efficiently use the energy of the laser beam. If a member that reflects the laser beam is provided, for example, a reflective member made of a metal surface or a mirror surface, the laser beam that has passed through the liquid in the heat acting section 227 will be reflected by the reflective member and travel through the liquid again. This allows energy efficiency to be improved.

In FIG. 2c, the second laser beam 230 irradiates the diffuser plate 231 while being scanned in the same manner as the first laser beam 229. However, when the second laser beam passes through the liquid channel 225, it is blocked by the liquid or partially absorbed, so that the light pattern on the diffuser plate 231 becomes a pattern that is a projection of the fluid channel 225. This pattern is sequentially detected by photodetector 232. The timing of irradiation with the first laser beam is controlled by this detection signal. 233 and 234 are shielding plates for preventing external stray light.

Further, in FIGS. 2a and 2b, 235 is a start detector for detecting the scanning start position of the second laser beam 230.

The second laser beam 2 at the start detector 235
30 is detected, scanning is started, and thereafter, at the timing of the signal detected by the photodetector 232 when the liquid flow path 225 is irradiated with the second laser beam, the first laser beam 229 irradiations are performed.

This situation will be explained with reference to FIG.

In FIG. 3, a signal from a start detector 235 consisting of a photodiode or phototransistor is amplified by an amplifier circuit 236 and then converted into a flow path detection signal by two mono staple multivibrators 237 and 238. It is converted into a signal for gating. That is, start detector 2
Based on the signal from 35, the modulator is controlled in accordance with the flow path detection signal for a predetermined period of time to control the timing of the laser beam irradiated to the heat acting section. The photodetector 232 is composed of a plurality of photodiodes or phototransistors to avoid shading, that is, unevenness in the amount of light depending on the location, and after being amplified by an amplifier circuit 239, the photodetector 232 is gated for the predetermined period by a gate circuit 240 and output. . Gating prevents noise when the laser beam starts and ends incident on the aperture of the photodetector 232 and the diffuser plate. The pulse signal gated by the gate circuit 240 has its phase corrected by a delay circuit (not shown), etc., and controls the modulation timing of the modulator, that is, the timing of irradiation of the first laser beam.

The above timing will be explained with reference to FIG.

In FIG. 4, 1 is the output from the start detector and 2 is the signal from the photodetector 232.

The first mono-multivibrator 237 and the second
The output signals of the mono multivibrator 238 are shown at 3 and 4, respectively. Therefore, the output from the gate circuit becomes a pulse that follows the flow path, as shown in 5.

Next, the operation from receiving graphic/character information from a computer to producing a desired hard copy using the apparatus shown in this embodiment will be explained with reference to FIG. Information from the computer 501 is input into the interface circuit 502 of the apparatus in a predetermined format, either directly or via a storage medium such as a magnetic tape or a magnetic disk. Various instructions from the computer are decoded and executed by instruction execution circuit 503. Data is stored in data memory 504 in fixed amounts. In the case of character information, the data format is given as a binary code, and in the case of graphic information, it is data in units of pixels that make up the figure, or data of lines that make up the figure (so-called vector data). ). These modes are specified in advance of the data, and the instruction execution circuit 503 processes the data according to the specified mode in the data memory 504,
Controls line data generator 505. A line data generator 505 generates final data for one scan line.

That is, when data is given as a character code, the character pattern is read from the character generator 506, and the character patterns for one line are lined up and buffered, or the character code for one line is buffered and sequentially sent to the character generator 506. Character patterns are read out from 506 and data for modulating the first laser beam for one scan line is sequentially created. Even when the data is graphic information, the data is converted into scan line data to create data for sequentially modulating the laser beam for one line scan. The data for one scan line is 1
Under the control of a buffer switch control circuit 509, the signal is alternately input to line buffers 507 and 508, which are composed of shift registers or the like having a number of bits equal to the number of pixels for the scan line.

Further, the data of the line buffer 507 and the line buffer 508 are transmitted to the flow path photodetector 5 by using the detection signal from the start detector 510 as a start signal and by temporally previous laser beam scanning.
Using the signal detected from 11 as a trigger signal,
One bit for one scan line is sequentially read out and applied to the modulator control circuit 512. The trigger signal is a signal gated by the circuit in FIG. 3 (included in the buffer switch control circuit in FIG. 5), specifically, for example, the signal illustrated in FIG. When reading, an AND operation is performed between the data stored in the line buffer and the data stored in the line buffer under the control of the buffer switch control circuit. Therefore, the signal applied to the modulator control circuit is a data signal synchronized with the flow path pattern. While the laser scanner scans the head, data for one scan line stored in the line buffer is applied to the modulator 513, and the first laser beam synchronizes the bright and dark pattern flow path of one scan line. will be given. Further, the second laser beam is scanned by a common scanning device as shown in FIG. 2a, and it is simple in terms of the structure of the device to irradiate each channel at the same time. At this time, the signal detected by the second laser in one scan line scan is determined by the time required for processing to synchronize the data signal of the line buffer, and the signal detected by the second laser in one scan line scan is determined by the signal detected by the second laser in the first scan several times later. It will be used as a trigger signal to modulate the laser. Data is read out alternately from line buffers 507 and 508 under the control of buffer switch control circuit 509. That is, while reading from one line buffer, writing is occurring to the other line buffer. This approach allows data to be applied to the modulator without fail when the rotating polygon mirror sweeps the laser beam with very short spacing from one reflective surface to the next. While scanning one scan line, the recording paper is rotated at a constant speed and moved by an appropriate scan line interval. The printer control circuit 514 is a circuit for controlling the conveyance of such recording paper.

According to the above embodiment, two line buffers 5
Since data is input and read to and from 07 and 508 at different timings, for example, alternately, it is possible to output data to the recording head at high speed. In particular, it becomes possible to output data optimally for the above-mentioned recording head capable of high-density and high-speed recording, and the throughput of the entire recording system can be improved.

Furthermore, when the data is given as a character code, the pattern data can be obtained using the character generator 506 and stored in the line buffers 507 and 508.
By transferring data using character codes, data transfer time can be significantly reduced. In particular, it is possible to perform optimal data transfer for the above-mentioned recording head, which is capable of high-density and high-speed recording.
The throughput of the entire recording system can be improved.

Although the present invention has been described above based on embodiments, various modifications may be made within the scope of the claims.

For example, the second laser beam may be split from the laser oscillator for the first laser beam using a beam splitter or the like.
Furthermore, although the detection of the fluid flow path by irradiation with the second laser beam was performed using transmitted light, it is of course possible to use reflected light.

As explained above, according to the present invention, a recording head that causes a sudden change in the state of the liquid to eject the liquid from the ejection orifice to form flying droplets is used to produce high-density and high-speed printing. Since it becomes possible to perform accurate image recording, the throughput of the entire recording system can be improved.

Further, according to the present invention, it is not necessary for the information generating means to be connected to be aware of the information format for the above-mentioned new recording head, so that it is possible to easily connect various information generating means.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for explaining the outline of the recording principle related to the present invention, FIG. 2 a is an explanatory diagram schematically showing a preferred embodiment of the present invention, and FIG. 2 b 2 is a schematic partial perspective view of a recording head 209 used in the apparatus shown in FIG.
Fig. c is a schematic cross-sectional view thereof, Fig. 3 is a block diagram of a circuit that processes the flow path detection signal, Fig. 4 is a timing chart showing the timing of the signal processing, and Fig. 5 uses the method of the present invention. FIG. 2 is a block diagram of a circuit for producing a desired hard copy. 101... Nozzle, 102... Discharge orifice, 103... Liquid, 104... Recorded member, 1
05...Droplet, 201...Laser oscillator, 202
... Acousto-optic modulator, 203 ... Reflector, 20
4...beam expander, 205...polygon, 206...motor, 207...f-theta lens, 208...reflector, 209...recording head,
210... Channel array, 211... Recorded member, 21
2... Supply pipe, 213... Common liquid chamber member, 214
...Liquid storage tank, 215...Cassette, 216...
...Drum, 217...Laser oscillator, 218...
Reflector, 219...Beam expander, 22
0... Nozzle row, 221... Nozzle row member, 22
2...Irradiation section, 223...Fluid channel, 224...
Groove plate, 225...Groove cover, 226...Orifice,
227... Heat acting part, 228... Heat conversion body, 22
9...First laser beam, 230...Second laser beam, 231...Diffusion plate, 232...
Photodetector, 233, 234... Shielding plate, 235...
...Start detector, 236...Amplification circuit, 23
7,238...Multi-vibrator, 239...
Amplifier circuit, 240...gate circuit, 501...computer, 502...interface circuit, 503...instruction execution circuit, 5
04...Data memory, 505...Line data generator, 506...Character generator, 507, 508...Line buffer, 5
09... Buffer switch control circuit, 510...
Start detector, 511...Flow path photodetector, 51
2...Modulation control circuit, 513...Modulator.

Claims (1)

[Scope of Claims] 1. A plurality of ejection ports for ejecting liquid, provided for each corresponding ejection port, forming bubbles in the liquid by heat, and causing the liquid to be ejected from the ejection ports based on the formation of the bubbles. A liquid jet recording method that performs recording using a recording head having a heat converter that supplies thermal energy to the liquid that is used to form flying droplets, the recording method generating recording information to be recorded. Inputting the recording information generated by the recording information generating means into an interface means electrically coupled to the information generating means, and converting the recording information inputted into the interface means into recording data suitable for driving the recording head. , one line of the recorded data is alternately stored in buffer means capable of storing two lines of recorded data, and one line of the recorded data stored in the buffer means is converted in accordance with the start timing. The recording head is alternately and sequentially outputted, and based on the sequentially outputted recording data, the driving means generates thermal energy in each of the heat converters of the recording head capable of forming bubbles in the liquid. A liquid jet recording method characterized in that a flying droplet is formed at each corresponding discharge port based on the recording data. 2 A plurality of ejection ports for ejecting liquid, provided for each corresponding ejection port, forming air bubbles in the liquid by heat, and ejecting the liquid from the ejection ports based on the formation of the air bubbles to form flying droplets. A liquid jet recording method that performs recording using a recording head having a heat converter that supplies thermal energy to the liquid, which is used for inputting recording information including code information and pixel information generated by the recording information generating means into an interface means coupled to the interface means; temporarily storing the recording information input to the interface means in a memory means; Generate pattern information by a pattern generation means based on the code information stored in the means, and combine the pattern information generated by the pattern generation means and the pixel information stored in the memory means with the recording means. Converting the recorded data to data suitable for driving the head, storing one line of recorded data alternately in a buffer means capable of storing two lines of recorded data, and storing the recorded data in the buffer means in accordance with the start timing. The recording data for one line is alternately and sequentially outputted, and based on the sequentially outputted recording data, thermal energy capable of forming bubbles in the liquid is transferred to each of the recording heads by a driving means. 1. A liquid jet recording method, characterized in that a liquid jet is generated in a body, thereby forming flying droplets at each corresponding discharge port based on the recording data. 3. The liquid jet recording method according to claim 2, wherein the pattern generating means includes a character generator.