JPS6255990B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a liquid jet recording device.

The no-impact recording method can be said to be an excellent recording method because it produces extremely little noise during recording, has high-speed recording properties, and can record on plain paper without requiring any special fixing process. Among these, the so-called inkjet recording method (liquid jet recording method) is an extremely powerful recording method, and various methods have been devised and improved, and some have been commercialized as devices and some are currently in practical use. Some efforts are underway.

Among them, USP 3683212, USP 3747120, USP
The so-called drop on demand liquid jet recording method described in No. 3,946,398 et al. performs recording by attaching all of the generated droplets to the surface of the recording member. Recently, Tofu has been attracting attention because it does not require liquid recovery like 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, it is difficult to miniaturize the recording head and make it multi-orifice because there are problems in processing the recording head and it is extremely difficult to miniaturize the piezo vibrating element having the desired resonance number. Since droplets are ejected and ejected using mechanical energy in the form of mechanical vibrations of a vibrating element, it is not suitable for high-speed recording, and has disadvantages such as relatively high occurrence of satellite dots and fogging during recording development. .

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 to this, the present applicant proposed a liquid jet recording method based on a completely new concept that can solve the above-mentioned problems in Japanese Patent Application No. 118798/1983.

An object of the present invention is to provide a liquid jet recording apparatus that is implemented based on this liquid jet recording method.

That is, the present invention has a simple structure, facilitates multi-orifice formation, especially high-density multi-orifice formation, enables high-speed recording, does not generate satellite dots, and produces fog-free images. The main purpose is to provide a liquid jet recording device obtained by the present invention.

In addition, it can provide high-resolution, clear, and high-quality images, has low production costs, and is compact.
Another object of the present invention is to provide a liquid jet recording device that is extremely easy to operate.

According to the present invention, N discharge orifices for discharging liquid in a predetermined direction are arranged in a direction substantially perpendicular to the moving direction of the recording member at a density corresponding to the resolution of the recorded image. and a recording head provided for each of the discharge orifices, in which a heat acting part communicating with the discharge orifice communicates with a common liquid chamber for supplying liquid to the heat acting part; the common liquid chamber; A liquid jet recording device comprising: a liquid storage layer for supplying liquid to a recording member; a storage means for a recording member; a thermal drying means for drying the recorded member by applying residual heat generated by the recording head to the recording member on which recording has been performed; is given.

Furthermore, a liquid jet recording apparatus is also provided in which the thermal drying means utilizes residual heat generated by the recording head. Alternatively, a liquid jet recording apparatus is also provided in which the thermal drying means has a structure in which residual heat generated by the recording head is conveyed to a recording member drying position by a heat pipe.

The liquid jet recording device of the present invention can easily realize a high-density multi-orifice recording method, so it can perform ultra-high-speed recording, and can produce clear, high-quality recorded images without generation of satellite dots and fog. Not only can the amount of liquid ejected and the size of the droplets be controlled arbitrarily by controlling the amount of thermal energy generated per unit time, it is possible to create images with arbitrary gradation. The recording head, which is the main part of the device of the present invention, has an extremely simple structure and can be easily microfabricated, so it can be made much smaller than conventional devices. Due to its simple structure and ease of processing, high-density multi-orifice formation, which is essential for high-speed recording, can be achieved extremely easily. (array) structure can be arbitrarily designed as desired, so that the recording head can be arranged in a so-called full-line array with a length that covers the width of the recording surface.
line) can be achieved extremely easily.
It has other remarkable features.

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

An overview of the recording principle applied to the present invention will be explained with reference to FIG.

FIG. 1 is an explanatory diagram for explaining the recording principle of 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 l from 02
When 03a receives the action of thermal energy in the portion of width △l (thermal action part), the state of liquid 103a changes sharply, and the liquid 103b existing within width l of nozzle 101 changes depending on the amount of applied thermal energy.
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 explain this point more specifically, the heat acting part △
When thermal energy is applied to the liquid 103a in the heat acting part Δl, a sudden change in state including the generation of bubbles occurs instantaneously in the liquid 103a in the heat acting part Δl. Depending on the applied force, part or all of the liquid 103b existing within the width l 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 according to the thermal effect △l, 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 Δl of the portion 103a that is affected by the thermal energy of the liquid present in the nozzle 101, and the volume of the liquid 103a within Δl. If the nozzle 101 is cylindrical, the average inner diameter d at the width l, or if the nozzle 101 is not cylindrical, the average cross-sectional area at the width l, or the position of the orifice 102. It depends on the distance l to the receiving position, 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, being able to arbitrarily change the distance l means that the position of application of thermal energy during recording can be changed as desired, and therefore the amount of generated thermal energy per unit time can be changed. At least 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 portion Δl 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 Δl in a temporally discontinuous manner, 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 Δl in accordance with the recording information signal, a state change is caused in the liquid 103a in the heat action region Δl in accordance with the signal. Therefore, any of the formed droplets 105 can carry recording information, and therefore all of them can be transferred to 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 N ₀ of droplets generated per time can be extremely reduced.

The liquid 103 in the heat acting part △l is discontinuously stored without recording information being carried by the applied thermal energy.
When making it act on a, it is made to act repeatedly at a certain constant frequency.

The frequency in this case is determined by taking into account the type of liquid used and its physical properties, the shape of the nozzle, the volume of liquid in the heat acting part Δl, the liquid supply rate into the nozzle, the orifice diameter, the recording speed, etc. It is determined as appropriate depending on the request, but usually 0.1 to 1000K
Hz, preferably 1-1000KHz, optimally 2-500K
It is preferable to set it as Hz.

In this case, the pressure applied to the liquid 103 is caused by thermal energy being provided to the liquid 103a or by the pressure applied to the liquid 103a.
The orifice 102 is not generated in the
The liquid 103 may be set to such a level that the liquid 103 is ejected, or may be set to such a level that the liquid 103 is not ejected by itself. At any pressure, the liquid 103a is subjected to heat action in the heat action part Δl,
It is possible to form a droplet stream with a desired diameter and droplet generation frequency by causing a state change and repeating the state change, and/or by vibration based on the repetition of the state change.

The droplets formed in such a state are controlled according to recording information by other means such as charge control, electric field control, or air flow control, and recording is executed.

In the present invention, the thermal energy to be applied to the liquid 103 is supplied to a heat converter provided in the heat acting part Δl, or by supplying the heat converting energy to a heat converting body provided in the heat acting part Δl.
It is generated by supplying liquid 103a located at As the heat conversion energy, any energy that can be converted into thermal energy can be used, but electrical energy and electromagnetic wave energy are usually preferably used because of their ease of supply, transmission, control, etc. As electromagnetic wave energy, laser energy is particularly preferred because of its advantages such as high heat conversion efficiency, easy transmission, supply, and control, and ability to be miniaturized in terms of equipment.

In the case of employing electrical energy as heat conversion energy in the present invention, the heat conversion body may be provided in direct contact with the nozzle 101, or
A substance with good heat conduction efficiency may be interposed between the nozzles 101 and 101, but in either case, the thermal energy generated from the heat converter provided in the nozzle 101 is transferred to the liquid 1.
03a and act on it.

Furthermore, in the case where this electric energy is employed, at least the portion of the nozzle 101 on which the electric energy acts may itself be constructed of a heat converter.

When employing electromagnetic wave energy as heat conversion energy, thermal energy is generated based on electromagnetic wave irradiation, and the thermal energy causes a sudden state change in the liquid, such as a state change including the generation of bubbles due to electrification. What causes it is the heat acting part △l
Either the liquid itself absorbs electromagnetic waves and generates heat, or a heat converter that absorbs electromagnetic waves and generates heat is provided in the heat acting part △l, and the thermal energy generated by the heat converter is transferred to the heat acting part △l. This is achieved by acting on a certain liquid. The heat converter may be provided in direct contact with the inner wall surface or outer wall surface of the heat acting portion Δl of the nozzle 1, or may be provided with a substance with good heat conduction efficiency interposed therebetween, but in either case, Also in the case of
The thermal energy generated from the heat converter is transferred to the liquid 10.
3a is configured and arranged so as to be able to act effectively on the target.

Alternatively, at least the wall of the heat acting portion Δl of the nozzle 101 may be made of a heat converter. The heat converter is selected depending on the wavelength of the electromagnetic wave to be irradiated, and is made of a material that has an absorption region in the wavelength region of the electromagnetic wave. If such an electromagnetic wave absorbing material itself has film properties or adhesive properties, it is sufficient to form a coating film on a predetermined part of the outer wall of the heat-acting part Δl of the nozzle 101, or only the electromagnetic wave absorbing material can be used. If there is no or weak film or adhesive properties,
A coating film may be formed by mixing and dispersing it in a suitable binder that has film properties, adhesive properties, and heat resistance.

As the electromagnetic wave absorbing material, many commonly known dyes and pigments can be used. For example, when infrared rays are used as the electromagnetic wave, dyes and pigments can be used as infrared absorbing exothermic agents.

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

FIG. 2 is an explanatory diagram schematically showing the structural arrangement of a preferred embodiment of the liquid jet recording apparatus of the present invention.

The document placed between the document table 201 and the document table cover 203, which are designed to be movable, is exposed to fluorescent light or
It is irradiated with light emitted by a light source 202 composed of a light emitting body such as an LED. The light reflected from the original is passed through a plurality of reflecting mirrors 20 according to the brightness of the original.
An image is formed by the 4,205 lens 206 on the light receiving surface of the sensor 207, and optical information is input to the sensor 207 and converted into an electrical signal. sensor 207
is an ordinary commercially available CCD one-dimensional sensor array with a 2048-bit photosensitive area. That is,
The 2048-bit optical information signal input to the sensor 207 is converted into an electrical signal of 64 bits each according to the clock pulse sent from the drive circuit 208, and divided into 32 blocks into the drive circuit 208 via 64 connection cables 209. sent as a signal. The drive circuit 208 incorporates a serial-to-parallel conversion element, a numerical bit storage element, etc., and it is also possible to convert a 2048-bit signal into a time series and output it through a band compression circuit, making it possible to perform communication. Connection with other systems via circuits is also possible, but this is only recorded here as an example of the application of the present invention. The 64 parallel electrical signals sent to the drive circuit 208 are amplified by an amplifier connected to a power supply 210 and converted into voltage pulses of, for example, 40V and 10 μsec. By sending this voltage pulse signal to the recording head 212 through the flexible printed electrode 211, the recording head 212 can be driven in accordance with the recording signal.

The recording on the recording paper by the recording head 212 is as follows.
A recording paper 214 is delivered from a cassette 213, which is a storage means, containing a large number of recording papers, to a pair of paper feed rollers 215-1 and 215-1 at a certain timing.
5-2, one set of conveyance rollers 216-1, 216-2
When the writing is carried to the writing start position, that position is detected and the writing is started based on the detection signal. The recording paper 214 is attached to the recording head 2
12, the conveyance roller 2
17-, 217-2, a guide plate 218, and conveyance rollers 219-1, 219-2.
It is transported in the 0 direction and stored in the storage cassette 220. At this time, the recording surface of the recording paper 214 is dried by a drying means between the conveyance roller 219 and the storage cassette 220. The drying means has a heat sink 221 and a heat pipe 222, the surface of which the recording paper 214 passes has a curved surface structure as shown in the figure, and has a so-called heat pipe internal structure. The heat pipe 222 transfers the heat generated by the recording head 212 to the heat sink 22, as will be described later.
1 and placed on a heat sink 221 to radiate heat. By connecting the recording head 212 and the heat sink 221 with the heat pipe 222 in this manner, not only can the thermal energy generated in the recording head 212 be used extremely effectively, but also the heat energy generated by the recording head 212 can be used very effectively. Since heat other than that used for writing can be efficiently removed, the writing speed of the recording head 212 itself can be dramatically improved.

On the front surface of the recording head 212, there are 2048 orifices (in the present invention, the number of orifices is not limited to 2048, but the number of orifices is not limited to 2048, but is arranged in the direction of movement of the recording member at a density depending on the desired resolution). N pieces are arranged in a row in a substantially perpendicular direction and have a length that covers the width of the recording member. It is considered best to match the number of pixels in the light receiving area) and is arranged in a horizontal line at a density that corresponds to the desired resolution of the recorded image.
It has a structure.

Ink (liquid) is supplied to the recording head 212 from a liquid storage tank 224 via a pipe 215.

The ink capacity of the liquid storage tank 224 is determined by the writing speed of the device, the frequency of use, the size of the recording paper used, etc.;
It is said to be around 10.

In the apparatus shown in FIG. 2, the document reading means is of a type in which the document table 201 moves, and the optical system is also structured to match this. A fixed document table type may also be used.

Next, the recording head 21 mounted on the apparatus shown in FIG. 2, which is one of the features of the apparatus of the present invention,
An example of the second embodiment will be described.

FIG. 3a shows a schematic perspective view for explaining the main parts of the structure of the recording head installed in the apparatus of FIG. 2.

The recording head 301 shown in FIG. 3a is mounted on a support member 302, one end of which is attached to the main body of the apparatus, in order to securely install it in a predetermined position in the main body of the apparatus.
Groove plate block 30 with 2048 grooves
3. Groove cover plate block 304, common liquid chamber block 3
05, 2048 orifices 306, 2048 liquid chambers communicating with the orifices, and a common liquid chamber communicating with each liquid chamber (in Fig. 3a, liquid chambers, common chambers, are hidden and cannot be seen), and a coupling pipe 307 is coupled to both ends of the common liquid chamber. The liquid reservoir to be replenished to the common liquid chamber is a viscoelastic supply pipe 3 connected to the liquid storage tank.
08, the liquid flows into the branch pipe 309, where the liquid is split into two directions, passes through viscoelastic supply pipes 310 and 311, and flows into the common liquid chamber.

At a predetermined position on the top of the recording head 301 is a “co”.
A square-shaped heat pipe 312 is installed,
Heat generated from the recording head 301 is effectively conveyed to a heat sink, which is one of the elements constituting the drying means for drying the recording paper.

FIG. 3b shows a schematic cross-sectional view taken at the position indicated by the dashed line XY in FIG. 3a.

As can be clearly seen in FIG. 3b, the heat pipe 312 is coupled to the groove plate block 304 in good thermal contact. A partially enlarged view of FIG. 3b is shown in FIG. 3c, clarifying the internal structure of the heat pipe 312 and the arrangement of the orifices 306. The orifices 306 have a predetermined orifice area and are equally spaced at a predetermined pitch. As a structural feature of the recording head implemented in the apparatus of the present invention, the orifice density can be provided to be equal to the resolution required for the recorded image.

For example, a V-shaped or U-shaped groove 313 is dug in the inner bottom wall surface of the heat pipe 312, and this groove is formed not only in the left and right direction in the figure, but also in a direction perpendicular to this groove. The structure has a basic eye structure as a whole. By providing the groove 313 in the inner bottom wall surface of the heat pipe 312 in this manner, the operating efficiency of the heat pipe 312 can be improved. In the case of the recording head shown in the figure, the orifices 306 have an opening area of 40 .mu.m.times.40 .mu.m, and 2048 orifices 306 are arranged in a row at a density of 10 pel/mm.

FIG. 3d shows a heat pipe 312, a liquid chamber 314,
3 is a sectional view taken perpendicularly to the dashed line XY shown in FIG. 3a to explain the structural arrangement of the common liquid chamber 315. FIG.

The liquid chamber 314 is formed by covering and joining the groove opening part of the groove plate block 303, which is provided with 2048 grooves, with the groove cover plate block 304, and the common liquid chamber 315 is formed by connecting the groove plate block 303, which is provided with 2048 grooves. A hole 316 into which a connecting pipe 307 is connected is provided in two wall surfaces parallel to the plane of the drawing, which are formed as an internal space region created by joining the groove lid block 304 and the common liquid chamber block 305.

An orifice 306 is provided at a predetermined position on the surface forming the inner wall surface of the liquid chamber 314 of the groove cover plate block 304.
A heating resistor 317 for generating thermal energy for ejecting more liquid is provided by the method, means, and procedure described below.

FIG. 3e shows a partial perspective view of the groove plate block 303 and the common liquid chamber block 305 in a joined state.

In the groove plate block 303, 2048 grooves 318 are provided with a predetermined groove cross-sectional area and at a predetermined pitch in order to form 2048 liquid chambers.

With reference to FIGS. 3f and 3g, the structure and arrangement of the heat generating resistor 317 provided on the surface of the groove cover plate block and the elements outside the circuit for driving the heat generating resistor 317 will be explained.

A SiO ₂ sputter film 319 is applied on the surface of the groove cover plate block 304 made of ceramics or the like, and ZrB ₂ is further applied as a heating resistor 317 to a thickness of about 2000 Å by sputtering. A common electrode 32 is used to provide electrical information signals to this heating resistor 317.
0 and a lead electrode 321 are attached with an Al vapor deposition film with a thickness of about 5000 Å, and each is shown in FIG. 3g, which will be described in detail later.
The pattern is arranged as shown in the figure. Further, on the heating resistor 317, SiO ₂ is sputtered to a thickness of several μm as a protective film 322 for isolation and insulation from the liquid used for recording.

The 2048 lead electrodes 321 and the 2048 common electrodes 320 are arranged in a 32×
It is organized into 64 matrices. The common electrode side
32 flexible printed electrodes 324, 64 flexible printed electrodes 325 on the lead electrode side
is connected to by a crimp connector 326.
Further, the groove cover plate block 304 is bonded to the heat pipe 321 with conductive paste. Further, a diode 327 is attached to the lead electrode 321 in order to prevent crosstalk between the heating resistors.

The heat generated by the heating resistor 317 is transferred to the liquid chamber 314.
After causing a sudden change in the state of the liquid inside the liquid and causing the droplets to be ejected and flying from the orifice 306, the residual heat remaining around the heat generating resistor 317 is quickly removed, as the droplet generation frequency increases. However, in the present invention, the heating resistor 31 of the groove cover plate block 304 is
Since the heat pipe 312 is attached to the opposite rear surface position where 7 is installed, when the power to the heating resistor 317 is turned off, the residual heat generated by the energization of the heating resistor 317 is heat pipe 3
12 to the heat sink 222,
The liquid in the liquid chamber 314 returns to its original temperature.
Therefore, the apparatus of the present invention can significantly improve the recording speed, provide high resolution and clear images, and also enable ultra-high speed recording.

FIG. 3g is a schematic explanatory diagram of circuit wiring provided on the groove cover plate block 304. The matrix used in the recording head installed in the device shown in Figure 2 is
Although it is a 32 x 64 matrix, in order to explain the details of the invention in an easy-to-understand manner, it will be explained as a 3 x 3 matrix in Fig. 3g.

The lead electrode 321 is an aluminum vapor deposited film with a width of 40 μm, and the common electrode 320 is L-shaped with a 40 μm wide electrode extending from one end of a 90 μm x 50 μm rectangle.
It is an Al vapor deposited film. Heat generating resistor (a-1, a-
2, a-3...c-3) is a rectangular ZrB ₂ sputtered film of 40μ×250μ. All of these patterns are patterned using photoetching techniques. The insulating film of the matrix wiring section 323 is
The sputtered film of SiO ₂ is 10 μm thick, with through holes (a-α, a-β, a-γ...c-
γ, a ₁ -E, a ₂ -E...c ₃ -E) are each opened by photo-etching technology. Short wiring (α, β, γ,
a-E, b-E, and c-E) each consist of an Al vapor deposited film with a thickness of 2 μm on an insulating film, and are patterned by photo-etching. Figure 3g
Although it is omitted, a diode is connected to each lead electrode, and each heating resistor (a-1...,
c-3) prevents crosstalk.

The three common electrodes of block a are through holes (a ₁
-E), (a ₂ -E), and (a ₃ -E) are connected to the ground electrode a-E, and blocks b and c below are also connected to b-E and c-E, respectively.

The heating resistors (a-1), (b-1), (c-1) are connected to their respective lead electrodes (a-α), (b
-α) and (c-γ) are used to connect to the short electrode α, and further to the electrode α-P. Hereinafter, heating elements (a-2), (b-
2) (b-3) is connected to the β-P electrode (a-3), (b-
3) and (c-3) heating resistors are connected to γ-P.

Now, for example, when an electrical information signal is applied to the electrode (α-P) and the electrode (a-E), the heating resistor (a-
1) only generates heat, electrode (α-P), electrode (β-
P) and when applied to electrodes (a-E) (a-1)
The heating resistor (a-2) generates heat. Therefore electrodes (a-E) are connected to earth,
When a positive voltage signal, which is an electrical information signal, is applied to one or more of the electrodes (α-P), (β-P), and (γ-P), the heating resistor generates heat according to the information signal, and the following occurs. When the electrode (b-E) is connected to ground and an electrical information signal is applied to one or more of the electrodes (α-P), (β-P), and (γ-P), (b-1), ( b-
2), one or more of the heating resistors (b-3) will generate heat.

Therefore, it was formed with the same technical idea as this wiring.
A recording head with a 32 x 64 matrix has 32 ground electrodes (324 in Figure 3f) and 64
The electric information signal input electrode (325 in FIG. 3F) of the book causes a predetermined heating resistor to generate heat in response to an electric signal, and liquid can be discharged from the orifice 306.

Although the embodiment of the present invention has been described with reference to a liquid jet recording device equipped with a recording head equipped with an electric/thermal converter, the same concept can be applied to a device using a laser.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for explaining the outline of the recording principle applied to the present invention, FIG. 2 is a schematic explanatory diagram showing the configuration of an example of a preferred embodiment of the apparatus of the present invention, and FIG. Figures a, b, c, d, e, f, and g are diagrams for explaining preferred embodiments of the recording head installed in the apparatus shown in Figure 2, respectively;
Figure a is a schematic perspective view, Figure 3 b is a sectional view taken along the dashed line XY shown in Figure 3 a, Figure 3 c is an enlarged partial view of Figure 3 b, and Figure 3 d is 3e is a partial perspective view, FIG. 3f is a schematic explanatory diagram of the groove cover plate block 304, and FIG. 3g is an explanatory diagram illustrating an example of the matrix wiring diagram of the recording head. . 101... Nozzle, 102... Orifice, 1
03...Liquid, 104...Recorded member, 105...
...Droplet, 201...Original table, 202...Light source, 2
03...Original platen cover, 204, 205...Mirror, 206...Lens, 207...Sensor, 2
08...Drive circuit, 209...Cable, 2
DESCRIPTION OF SYMBOLS 10... Power supply, 211... Flexible printed electrode, 212... Recording head, 213... Cassette, 214... Recording paper, 215... Paper feed roller,
216... Conveyance roller, 217... Conveyance roller,
218... Guide plate, 219... Conveyance roller, 2
20...tray, 221...heat sink, 222...
Heat pipe, 301... Recording head, 302...
...Support member, 303...Groove plate block, 304...
... Groove cover plate block, 305 ... Common liquid chamber block, 306 ... Orifice, 307 ... Supply pipe, 308 ... Supply pipe, 309 ... Shunt pipe,
310... Supply pipe, 312... Heat pipe, 313... Groove, 314... Liquid chamber, 315...
Common liquid chamber, 316...hole, 317...heating resistor, 318...groove.

Claims (1)

[Scope of Claims] 1. A discharge orifice for discharging liquid in a predetermined direction has a density of N in a direction substantially perpendicular to the moving direction of the recording member at a density corresponding to the resolution of the recorded image.
a recording head arranged in an array, provided for each ejection orifice, and in which a heat acting part communicating with the ejection orifice communicates with a common liquid chamber for supplying liquid to the heat acting part; A liquid storage layer for supplying liquid to the common liquid chamber; storage means for a recording member; thermal drying means for applying residual heat generated by the recording head to dry the recording member on which recording has been performed; A liquid jet recording device characterized by: 2. The liquid jet recording apparatus according to claim 1, wherein the thermal drying means has a structure in which residual heat generated by the recording head is conveyed to a recording member drying position via a heat pipe.