JPS6357244A - Recorder - Google Patents

Abstract

PURPOSE:To permit the exact positioning of thermal head by attaching a thermal head to the recorder body through a position regulating mechanism in relation to the path of a recording medium. CONSTITUTION:A thermal head 7 is fixed by two holders 167 provided on both ends and the holder 167 are connected with a block part 173 positioned and fixed to the lower frame 99 of a recorder through two fixing screws 167 and two regulating screws 171 provided with a compressive spring 175. When the screw 169 is loosened, the holders 167 are supported by two compressive springs 175 engaged with the screw 171. By turning a total of four regulating screws 171, the height and inclination of the thermal head 7 can be adjusted. After the ending of position regulation of the head 7, four fixing screws 169 are clamped to fix the holders 167 to the block 173. The thermal head 7 can thus be exactly positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an inkjet recording apparatus that prevents nozzle clogging and enables high-resolution, high-speed recording.

(Prior Art) Conventionally, various methods have been proposed and known as non-impact recording methods, such as an electrostatic method, a thermal method, a thermal transfer method, an electrophotographic method, and an inkjet method.

Among the various methods mentioned above, Infusiera 1~ methods are:
It has many advantages such as low noise, relatively high speed recording, miniaturization of the device, and easy color printing.

Inkjet systems are also broadly classified into continuous jetting types, intermittent jetting types, on-demand types, ink mist types, etc. based on the means for generating ink droplets. However, due to the simplicity of the device, on-demand type is currently the mainstream. For example, the Gould method shown in Fig. 17 and the (a
Bubble jet methods such as those shown in ) and (b) have been put into practical use.

That is, in the Gould system shown in FIG. 17, for example, a glass nozzle 503 is connected to one end of a plastic hose 501, and the tip of the glass nozzle 503 is connected to an orifice 5.
05. A filter 507 is attached to a part of the plastic hose 501 . Ink 509 is supplied from the other end of the plus deck hose 501, and the ink is compressed by the radial contraction of a four-hole cylindrical piezoelectric vibrator (piezo) 511 installed on the outer periphery of the glass nozzle 503, and the ink is taken out by pressure. Ink droplets 513 are formed by surface tension.

Furthermore, as an example of the bubble jet method shown in FIG.
17 is covered and integrated.

A plurality of vortices 519 are formed at appropriate intervals in the length direction of the ceramic substrate 515. The ceramic substrate 515 in front of the groove 519 has an electric current of I! 1521 is provided, and a heat generating resistive element 523 is provided in a part of the lower part of the plurality of grooves 519.

An orifice 525 for a nozzle is formed in the lower part of the glass frame 517 facing the plurality of grooves 519, and an ink supply port 527 is bored in a part of the rear of the glass frame 517. When ink is supplied from the inlet supply port 527 and a voltage is applied to the electrode 521, the heating resistor element 523 vaporizes the ink to form bubbles, as shown in FIG. 18(b). . When you stop applying voltage,
The ink cools and contracts, forming ink droplets that are ejected from the orifice 525.

(Problems to be Solved by the Invention) Both the Gould method using piezoelectric vibrators in the conventional inkjet method mentioned above and the bubble jet method using a heating resistor element, both require a nozzle with a minute diameter. It was used. Therefore, there are problems such as clogging of the nozzle and accumulation of air bubbles in the nozzle, and there is also a drawback that it is difficult to increase the number of nozzles integrated.

The purpose of the present invention was proposed in order to improve the problem in view of the above circumstances, and it is possible to prevent nozzle clogging and bubble accumulation in the nozzle, to enable high resolution and high speed recording, and to prevent the problem from occurring. On the other hand, it is an object of the present invention to provide a recording device in which the height and inclination of a thermal head can be adjusted to ensure reliable positioning.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention forms a large number of small holes or recesses in a recording medium for holding ink, and also forms a large number of small holes or recesses for holding ink. A recording device that selectively heats small holes or recesses with a heating element disposed in a thermal head, and uses the pressure of generated bubbles to eject ink filled in the small holes or recesses and apply it to a recording material. , the thermal head is attached to the main body of the recording apparatus via a thermal head position adjustment mechanism so that the position of the thermal head can be adjusted with respect to the path of the recording material.

(Function) Since the recording device of the present invention does not use a nozzle, no clogging of the nozzle or accumulation of air bubbles inside the nozzle occurs.

Because RAD is used for recording media with many small holes or recesses, and thermals with high density heating elements,
High resolution and high speed recording possible.

Furthermore, by providing the j-maru head position adjustment mechanism, the height and inclination of the thermal head can be adjusted with respect to the path of the recording material, and the thermal head can be reliably positioned.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

First, the recording principle of the recording apparatus in this embodiment will be explained. FIG. 1 is an explanatory diagram illustrating the recording principle of the recording apparatus. In FIG. 1, ink 5 is held on a film 3 as a recording medium made of metal or heat-resistant synthetic resin, in which a large number of micropores 1 of, for example, 10 to 200 μm in diameter are formed, and the micropores 1 are filled with the ink 5. When the microhole 1 reaches the heating element 9 disposed in the thermal head 7, a voltage is applied to the heating element 9 to instantaneously generate heat, rapidly discharging the ink 5 filled in the microhole 1. The ink droplets 11 are ejected by the pressure of bubbles generated by heating, and recording is performed on recording paper as a recording material.

FIG. 2 shows an overall side view of the recording device 13 in this embodiment. In FIG. 2, the recording device 13 includes a cassette storage section 21 of a cassette 19 in which recording paper 17 as a recording material is stored in a box-shaped base 15. A transport unit 23 that transports the recording paper 17. It is comprised of a recording section 25 that records on the recording paper 17, a paper discharge section 27 that discharges the recording paper 17, and the like.

To explain the cassette storage section 21, in FIG.
3 is inserted along the inclined guide 29 from the upper right side,
A receiver, which is the bottom of the guide 29, is attached to the portion 29A. The presence or absence of the cassette 19 is detected by a cassette detection sensor 31 attached to the rear side of the inclined portion of the guide 29 at approximately the center, and the presence or absence of the recording paper 17 is detected by a paper detection sensor (not shown).

The transport unit 23 that transports the recording paper 17 will be explained.

In FIG. 2, a paper feed motor (not shown) is driven by a recording command from a control device (not shown) connected to the recording device 13, and the paper feed roller 33 rotates to feed the recording paper 17 from the cassette 19. Zaru. The fed recording paper 17 is guided by paper feed guides 35 and 37, and the leading edge of the recording paper 17 reaches the rolling contact portion between the upper aligning roller 39 and the lower aligning roller 41.

The recording paper 17 hits the rolling contact portion between the aligning roller 39 and the lower aligning roller 41 and is aligned. After a certain period of time has passed after the start of paper feeding, the upper aligning roller 3
9 and the lower aligning roller 41 start rotating to grip and convey the recording paper 17.

Next, the recording section 25 and paper ejection section 27 of the recording device 13 will be explained. FIG. 3 is an enlarged side sectional view of the portion indicated by the ■ arrow in FIG. 2, and FIG. 4 is a side view of the upper frame of FIG. 3. In FIG. 3, the recording section guide 43.45
and the head roller 47 is the upper aligning roller 39
It is attached to an arm 49 that can rotate using the fulcrum as a fulcrum. The upper surface of the recording section guide 45 has a thickness of, for example, 0.1
~Q. A recording section guide member 51 made of a thin stainless steel plate of 2 mm is attached, and the tip of the recording guide member 51 is always in pressure contact with the head roller 47. A square hole 53 is formed in the arm 49, and a camshaft 55 passes through the square hole 53.

As shown in FIG. 4, a ring 59 provided with a bottle 57 is fixed to one end of the camshaft 55.
9 rotates integrally with the camshaft 55. The link 61 is rotatably supported by the shaft of a rotary damper 65 fixed to the upper frame 63, and has a notch 67.
A bottle 57 is fitted into the hole. Set at the other end of the link 61 (
A tension spring 73 is suspended between the cutout 69 and a projection 71 provided on the upper part of the upper frame 63.

Furthermore, on the lower side of the link 61, in FIG.
A link 75 is connected to the left, and the link 75 is connected to the bin 7.
7, a solenoid 79 fixed to the upper frame 63
It is connected to the plunger 81 of. Furthermore, in FIG. 3, a tension spring 85 is suspended between the arm 49 and the protrusion 83 of the upper frame 63.

The rotation mechanism of the arm 49 will be explained. Figure 5 (a
) is a state diagram when the arm 49 is positioned upward, and FIG. 5(b) is a state diagram when the arm 49 is positioned downward. During non-recording, the arm 49 is positioned upward as shown in FIG. As shown in (a) of the figure, it is held at G1.

The recording paper 17 is placed in the recording section guide 43. '15 was guided,
The leading edge of the recording paper 17 is held between the head roller 47 and the recording guide member 51.

Further, the gap between the film 3 and the head roller 47 is maintained at G1 until the recording paper 17 passes the tip of the recording section guide member 51. In this embodiment, for example, the gap G1 is approximately 0.75111 m.

The leading edge of the recording paper 17 passes the leading edge of the recording unit guide member 51, and after a certain period of time, the solenoid 7 shown in FIG.
A voltage is applied to 9 to excite it. Solenoid 79 attracts plunger 81 and moves link 75 to the left in FIG. The link 61 rotates clockwise around the support shaft against the tension of the tension spring 73, rotates the bin 57 to the left, that is, counterclockwise, and the rings 5 rotate counterclockwise, that is, rotates counterclockwise. It will rotate counterclockwise.

Therefore, the camshaft 55 that rotates integrally with the ring 59 also rotates to the left, that is, counterclockwise, and the fifth
As shown in FIG. 3B, the arm 49 rotates to the left, that is, counterclockwise, using the upper aligning roller 39 as a fulcrum, and is positioned downward. At this time, the tip of the recording section guide member 51 comes into pressure contact with the film 3 that is in close contact with the thermal head 7. Also, the outer circumference of the camshaft 55 is a square hole 53.
separate from one side of After this, recording on the recording paper 17 is started.

Therefore, during recording, the film 3 and the recording section guide member 5
The gap with the tip of 1 is less than G2 as shown in FIG.
will be held. Naturally, the gap between the film 3 and the recording paper 17 is also maintained at G2. The gap G2 is the same as the thickness of the recording section guide member 51, and in this embodiment, the gap G2 is the same as the thickness of the recording section guide member 51.
2 is, for example, 0.2 mm.

At this time, as shown in FIG. 5(b), the positional deviation between the center of the head roller 47 and the center of the heating element 9 is P, and the position between the tip of the recording section guide member 51 and the center of the heating element 9 is P. The deviation is set to be Q. In this embodiment, for example, P is approximately 0.7 mm, and Q is approximately Q, 3 mm. The arm 49 receives an upward force due to the tension of the tension spring 85, and the recording section guide member 51 is pressed against the film 3 with a force smaller than the weight of the head roller 47.

After the recording on the recording paper 17 is completed and a certain period of time has elapsed, the fourth
The voltage application to the solenoid 79 shown in the figure is stopped. The link 61 is rotated counterclockwise around the support shaft by the tension of the tension spring 73 to move the bin 57 to the fourth position.
The ring 59 rotates to the right in the figure, and the ring 59 rotates to the right, that is, clockwise.

Therefore, the camshaft 55 also rotates to the right, that is, clockwise, and the outer circumference of the camshaft 55 is connected to the square hole 53.
Press the arm 49 against one side of the upper aligning roller 3.
9 as a fulcrum and rotates to the right, that is, clockwise. As shown in FIG. 5(a), the four arms are again in the upper position. At this time, the link 61 is connected to the rotary damper 6
Since it is subjected to viscous resistance by 5, it does not rotate suddenly.

With the above configuration, the leading and trailing ends of the recording paper 17 are not bent and come into contact with the film 3 and are not smudged by excess ink adhering to the film 3.
Furthermore, during recording, the gap between the recording paper 17 and the film 3 can be reliably maintained at a set value, making it possible to perform high-quality recording.

The recording paper 17 can be held close to the generating element 9 by the head roller 47 and the recording section guide member 51, and this can be done reliably without blocking the ejection path of the ink 5 by the recording section guide member 51.

Furthermore, since the recording section guide section 051 is in pressure contact with the film 3 that is in close contact with the thermal head 7 with a relatively small pressure, the film 3 will not be damaged due to a large frictional resistance force being applied to the film 3.

The paper discharge section 27 of the recording device 13 will be explained.

In FIG. 5(b), the recording paper 17 that has passed the tip of the recording unit guide member 51 is guided to the paper discharge guides 87 and 89 shown in FIG. 3. As shown in FIG. 5(a), the tip of the paper ejection guide 87 is placed at an angle α
The gap between the paper ejection guide 87 and the film 3 is curved by R as shown in FIGS. 5(a) and 5(b).
is set to . In this embodiment, for example, α is 1
0 to 45°, and R is set such that R>RGl.

With the above configuration, the leading edge of the recording paper 17 will not enter above the gap between the leading edge of the paper ejection guide 87 and the head roller 47, and the recording paper 17 will be reliably guided by the paper ejection guides 87 and 89. That will happen.

The Uj paper guide 89 has a large number of small holes (not shown) formed therein, and the paper discharge guide 89 is fixed to a part of the duct rotation part 91. The duct rotating part 91 is connected to the duct main body 93
It is rotatably supported on a pivot 95 as a fulcrum. The duct rotating portion 91 is fixed by pressing its bottom portion against the right side inclined portion of the duct body 93. The duct body 93 is fixed to the upper surface of a blower 97, and the blower 97 is fixed to a lower frame 99.

As shown in FIG. 3, the paper ejection path includes a first upper pinch roller 101, a first lower pinch roller (not shown), a second upper pinch roller 103, and a second upper pinch roller (not shown).
A lower pinch roller is provided to pinch and convey one of the non-recording portions of several mm present on both sides of the recording paper 17.

When the fan 105 provided in the lower part of the blower 97 rotates, air flows into the right opening of the blower 97 and flows out from the upper opening of the blower 97. Air is in the duct body 93
The air flows into the duct main body 93 from the upper opening, and part of the air is blown to the upper part of the duct main body 93, and the - part is blown to the upper part of the duct rotating part 91. The air blown to the upper part of the duct rotation part 91 flows out from a small hole (not shown) formed in the paper discharge guide 89. A paper ejection guide 107 having a large number of small holes is fixed to the upper part of the duct body 93. More leakage.

The recording paper 17 that has passed the tip of the recording section guide member 51 is conveyed while being pressed against the paper ejection guide 87 by the pressure of the air flowing out from the small hole of the paper ejection guide 89 . At the same time, the non-recording portion of the recording paper 17 is pinched by a first upper pinch roller 101 and a first lower pinch roller (not shown), and then by a second upper pinch roller 103 and a second lower pinch roller (not shown). It is held and conveyed by pinch rollers.

As described above, since the recording paper 17 is conveyed, the recording paper 17 is conveyed without contacting the paper discharge guide 89, and the undried recorded image recorded on the recording paper 17 is not disturbed. Furthermore, by blowing air, the recorded image on the recording paper 17 is quickly dried.

Further, the recording paper 17 is guided by paper discharge guides 87, 107, and is held between an upper paper discharge roller 109 and a lower paper discharge roller 111, and is mounted on the left side of the recording device 13 shown in FIG. The paper is ejected to the paper ejection tray 113.

(a) of FIG. 6 is a perspective view of the paper discharge section 27 of the recording device 13, and (b) of FIG. 6 is an outline view of the star-shaped plate. ), the star-shaped play 1 has protrusions 115 with a pitch angle β and an acute angle γ formed at the tip 117, and is arranged at appropriate intervals as shown in FIG. 6(a). A collar 119 and a plurality of, for example, two reference rollers 121 that roll into contact with the upper paper ejection roller 109.
It consists of The recording surface of the recording paper 17 is supported in a dotted manner by a star-shaped plate 117.

With the above configuration, the upper paper ejection roller 109 and the lower paper ejection roller 111 can be moved without excessive pressure being applied to the recording paper 17.
Since it is conveyed while being held between the paper sheets 17 and 17, the undried recorded image on the recording paper 17 is not disturbed.

As shown in FIGS. 2 and 3, the upper paper ejection roller 109
Immediately before the lower paper ejection roller 111, an upper frame 63
A paper ejection switch 123 is attached to the paper tray 113, which detects the leading and trailing edges of the recording paper 17 to confirm whether or not the recording paper 17 has been reliably ejected to the J paper tray 113 shown in FIG. .

The drive system of the recording section 25 and paper ejection section 27 of the recording device 13 will be explained.

FIG. 7 shows the recording section 25a3 and paper ejection section 27 of the recording device 13.
FIG. 8 is a front view of the drive system in FIG. 7, and FIG. 8 is a plan view of FIG. In FIGS. 7 and 8, upper aligning roller gear 125 is connected to pulley 131 via gears 127,129. The pulley 131 further includes a bell l-133 and a pulley 135. It is connected to a recording paper conveyance motor gear 141 via a pulley 137 and a belt 139, and transmits the driving force of the recording paper conveyance motor 1/43.

The head roller pulley 145 is connected via a belt 147 to a first upper aligning roller pulley 149 coaxial with the upper aligning roller gear 125 . The first upper pinch roller pulley 151 is connected via a belt 153 to a second upper aligning roller pulley 155 coaxial with the first upper aligning roller pulley 149 . The second pinch roller gear 157 is connected via a gear 159 to a first upper pinch roller gear 161 coaxial with the first upper pinch roller pulley 151 . Further, the upper paper discharge roller gear 163 is connected to the second pinch roller gear 157 via a gear 165.

In the drive system having the above configuration, the above-mentioned upper aligning roller 39. Head roller/I7. First upper pinch roller 101. The second upper pinch roller 103 and the upper paper ejection roller 109 rotate in synchronization in the same direction and at the same rotation speed when the recording paper transport motor 143 starts driving.

=19- The installation state of the thermal head 7 will be explained below.

9(a) is a plan view of the mounting portion of the thermal head 7, and FIG. 9(b) is a side view of FIG. 9(a).

9(a) and (b), the thermal head 7 is fixed by a plurality of, for example, two, holder members 167 provided at both ends of the thermal head, and each of the plurality of, for example, two, holder members 167 is fixed by, for example, two holder members 167. A fixing screw 169 as a fixing member and an adjusting screw 17 as two adjusting members
1 to a block member 173 that is positioned and fixed to the lower frame 99 of the recording device 13. A compression spring 175 as an elastic member is interposed in the adjustment screw 171.

Therefore, when the 16 fixing screws are loosened, the holder member 167 is supported by the two compression springs 175 wrapped around the adjustment screws 171, and the holder member 167 is supported by the two compression springs 175 wrapped around the adjustment screws 171, and the holder member 167 is supported by the two compression springs 175 wrapped around the adjustment screws 171.
By turning 71, the height and inclination of the thermal head 7 are adjusted. When the position adjustment of the thermal head 7 is completed, the four fixing screws 169 are tightened to almost completely fix the holder member 167 to the block member 173.

With the above configuration, the thermal head 7 can be reliably positioned even if the processing accuracy and mounting accuracy of the holding member of the thermal head 7 are not very accurate. Furthermore, by using simple mechanical elements such as screws and springs, the structure is simple and the operation is easy.

Let me explain about the cartridge.

Figure 10 shows cartridge 1 when installed in recording device 13.
77 is a plan view. The cartridge 177 is the recording section 25
．． It is composed of an ink supply section 179 and a drive section 181.

To attach the cartridge 177 to the recording device 13, first, as shown in FIGS. 2, 3, and 4, the upper rotary carriage 183 fixed to the upper frame 63
and the lower port fixed to the lower frame 99 - tally catch 1
85 is released. Next, the upper frame 63 is rotated in the upper right direction, that is, clockwise, using the upper aligning roller 39 as a fulcrum, and the recording section 25 and paper ejection section 27 of the recording device 13 are opened.

The duct rotating portion 91 is rotated in the upper left direction, that is, counterclockwise, using the pivot 95 as a fulcrum.

The cartridge 177 shown in FIG. 10 is inserted from above the recording section 25 of the recording device 13. As shown in FIG. 3, the four feet 191 of the cartridge 177 are fitted into the four square holes 189 formed in the base 187, and the cartridge 177 is placed on the base 187. As shown in FIG. 10, by moving the lever 193 in the direction of the arrow, the plate 19 moves integrally with the lever 193.
5 is pressed against the two left feet 191 in FIG.
The cartridge 177 is moved to the right in FIG. 3 on the base 187. The two fu 1 to 191 on the right are 2 on the right
When pressure is applied to one side of the square hole 189, the cartridge 17
7 will be fixed to the base 187.

After the cartridge 177 is fixed, the duct rotating part 91 is rotated downward to the right, that is, clockwise, and the duct body 9 is rotated.
Fixed at 3. The upper frame 63 is rotated downward to the left, that is, counterclockwise, and pushed down until the upper rotary catch 183 and the lower rotary catch 185 are engaged. Through the following operations, the cartridge 177 is attached to the recording device 13. Cartridge 177 is inserted into recording device 1
3, the above operations can be performed in reverse order.

FIG. 11 is a sectional view of the recording section 25 of the cartridge 177, FIG. 12(a) is an outline view of the film 3, and FIG. 12(b) is an enlarged view of the formation area of the micropores 1 of the film 3. It is.

The film 3 is made of, for example, a metal such as nickel or copper, a synthetic resin such as a polyamide resin, or a multilayer stack of these, and has a thickness of 10 to 30 μm. As shown in FIG. 12(a), micropores 1 with a hole diameter of 20 to 30 μm and a hole pitch of 40 to 5 μm are formed in the micropore forming region 197 of the film 3, as shown in FIG. 9(b). ) is formed as shown in FIG.

As shown in FIG. 11, one end of the film 3 is fixed to a left film shaft 199, and the other end is fixed to and wound around a right film shaft 201. When the cartridge 177 is not attached, the film 3 is guided to the left curved surface section 205 and the right curved surface section 207 of the container 203. When the cartridge 177 is installed, the film 3 is guided by the left curved surface portion 205 and the right curved surface portion 207, and is pressed against the surface of the heating element 9 of the thermal head.

The ink coating members 209 and 211 of the ink coating section are made of Teflon felt, foamed nitrile rubber, foamed polyvinyl resin, etc., which have good water absorption and coating properties, and are filled in a container 203, and the left film is wrapped with the film 3 at the top. It is in pressure contact with the shaft 199 and the right film shaft 201. The seal members 213 and 215 are made of water-resistant rubber such as styrene butadiene rubber and nitrile rubber.
One end thereof is fixed to the container 203, and the other end is brought into contact with the film 3 at the edge.

Furthermore, at the side end portions of the recording section 25 of the car 1 to the carriage 177, as shown in FIG.
This ensures a tight seal of the cartridge 177 at the side ends. Therefore, the ink 5 may spill from the side edges,
It never evaporates.

The pressure urging mechanism 217 that applies pressure to the seal members 213 and 215 will be described.

The pressure biasing mechanism 217 is composed of plates 219, 221.degree., leaf springs 223, 225, and rotating plates 227.degree. 229. The plates 219 and 221 are, for example, thin plates made of elastic stainless steel having a thickness of 0.1 to Q and 4 mm, one end of which is fixed to the rotating plates 227 and 229, and the other end of which is press-fitted to the sealing members 213 and 215. has been done. Leaf spring 223.225, for example, thickness 0.1~0
．． 4. It is formed from a thin plate of stainless steel or other material with an elasticity of mm, and its cut surface is a rotary plate) -227,22
9, and the other end surface is in pressure contact with the side wall of the container 203.

The rotating play 1-227, 229 is connected to the container 2 by means of a collar 231 and a screw 233, as shown in FIG.
It is rotatably supported by 03.

Further, as shown in FIG. 11, the outer circumferences of the left camshaft 235° and the right camshaft 237, which are rotatably supported by the lower frame 99 of the recording device 13, are in contact with the rotating plates 227 and 229. It has become.

When the cartridge 177 is not installed or when recording is not performed, the outer circumferences of the left camshaft 235 and the right camshaft 237 do not come into contact with the rotation plates 1 to 227, 229, so the pressure horns of the leaf springs 223 and 225 cause the rotation plates to 22
7.229 rotates in six directions in FIG. 11, and the plates 219, 221 apply pressure to the sealing members 213.215.

As a result, the sealing members 213 and 215
The left curved surface portion 205 and the right curved surface portion 2 of the container 203 via
07.

On the other hand, during recording, the left camshaft 235 and the right camshaft 237 are driven and rotate in the direction of the arrow shown in FIG. ~
The outer periphery of 237 has equal pressure on the rotating plates 227 and 229,
The rotating plates 227, 229 are rotated in the direction B shown in FIG. 11 against the pressure of the leaf springs 223, 225 to release the pressure on the sealing member 213, 215 by the plates 219, 221. Thereby, the sealing members 213 and 215 come into contact with the film 3 at their edges.

By providing the pressure bias 1fi 1217 as described above, the sealing members 213 and 215 are brought into pressure contact with the left curved surface portion 205 and the right curved surface portion 207 of the container 203 via the film 3 when the cartridge 177 is not installed or when recording is not performed. Therefore, the cartridge 177 is almost completely sealed,
The ink 5 will not spill or evaporate from the cartridge 177. Also, during recording, the seal member 21
Since the 3° 215 contacts the film 3 with its elastomer, the excess ink 5 adhering to the film 3 can be scraped off, and the driving force of the film 3 can be greatly reduced.

The ink supply section of the cartridge 177 will be explained.

FIG. 13 is a sectional view of the ink supply section 179 of the cartridge 177. In FIG. 13, cartridge 177
The ink 5 is supplied to the cartridge 177 by attaching the ink container 239 to the cartridge 177. The ink container 239 is connected to the ink container main body 241. Cap 243. Valve 2459 consists of a conical spring 247 and a seal 249. A protrusion 251 is formed on the outer periphery of the cap 243, and a thread groove is formed on the inner periphery of the cap 243, so that the cap 243 is connected to the ink container body 241.

When the ink container 239 is not attached, the valve 245 is pressed against the seal 249 by the pressure of the conical spring 247, so that the ink 5 does not spill out from the ink container 239. Further, the opening of the ink supply section 179 of the cartridge 177 has a valve 253. A compression spring 255 and a seal 257 are installed, and when the ink container 239 is not installed, the valve 253 is pressed against the seal 257 by the pressure of the compression spring 255, so that the ink 5 does not spill out from the opening. , it does not evaporate.

The ink container 239 is inserted from above the opening of the ink supply section 179 of the cartridge 177 into a protrusion 251 formed on the outer periphery of the cap 243 and an L-shaped groove 25 formed at the opening.
9 and rotate the ink container 239 to the right when viewed from above.
9 is fixed and attached to the cartridge 177.

At this time, since the pressure of the conical spring 247 is greater than the pressure of the compression spring 255, the valve 253 is pushed down by the valve 245, and after the valve 253 comes into contact with the bottom of the opening, the valve 245 presses down.
5 is pushed up. In this way, the ink container 23
9 is opened, and the ink 5 flows from the ink container 239 into the opening of the ink supply section 179, and the ink supply path 261 is opened.
through which it flows and permeates into the inking members 209, 211 of the inking section shown in FIGS. 11 and 13. Also, when installing the ink container 239, the cap 2
Since the seal 43 is pressed against the seal 249, the ink 5 will not flow out from the opening.

When the ink 5 is consumed by recording, air of the same volume as the consumed amount is sent into the cartridge 177 through the micropores 1 of the film 3. The introduced air becomes bubbles within the ink 5 and is sent through the ink supply path 261 in a direction opposite to the ink supply direction, and is sent into the ink container 239. At the level of the ink 5 in the ink container 239, the bubbles disappear and return to air, so that the same volume of ink 5 as the air flows from the ink container 239 into the ink supply section 179. As understood from the above explanation, since the ink 5 in the cartridge 177 is always kept constant, the recording density can always be kept constant.

In order to remove the ink container 239 from the cartridge 177, it is sufficient to perform the operations in the reverse order of installation.

Further, in order to replenish the ink 5 to the ink container 239, the cap 243 may be removed from the ink container main body 241 and the ink 5 may be replenished from the opening of the ink container main body 241.

The driving portions 181 of the cars 1 to 177 will now be explained.

FIG. 14 is a sectional view of the drive section 181 of the car 1 to the carriage 177. As shown in FIG. 10, the drive section 181 of the cartridge 177 is connected to the left film shaft gear 2
63. Left ring 265. Right film shaft gear 267
, 26 right rings, and an idle gear 271. Left film shaft gear 263 and left ring 2
65 is integrally fixed to the left film shaft 199 mentioned above. Ma IC% right film shaft gear 26
As shown in FIG. 14, the right ring 269 is connected to the right ring 269 via a mainspring 273, and the right ring 269 is fixed to the right film shaft 201.

Since the film 3 is a thin film with a thickness of, for example, 10 to 30 μm, it must always be kept under tension so as not to bend. As the tension biasing means, the idle gear 271 is first taken out from the stud 275, and while the left film shaft gear 263 is fixed, the right film shaft gear 267 is rotated in the right direction when viewed from the left in FIG.

By doing this, the mainspring 273 is wound up, and the right film shaft gear 267 and the right ring 269
A torsional moment is generated between the two, and tension is applied to the film 3 via the right film shaft gear 267. In this state, when the idle gear 271 is attached to the stud 275, the left film shaft gear 263 and the right film shaft gear 267 are coupled via the idle gear 271, and the tension applied to the film 3 is maintained.

In order to drive the film 3, it is necessary to detect its initial position. This film position detection mechanism 277
As shown in the figure, it is composed of a worm 279 and a wheel 281 that are integrated with an idle gear 271. The wheel 281 is rotatably supported by the bin 285 on the boulder 283, and the holder 283 is attached to the container 20.
It is fixed to the top part of No.3.

Further, a detection hole 287 is formed in the wheel 281, and when the detection hole 287 of the wheel 281 is in the initial position of the film 3, the upper frame 63 of the recording device 13 is
The wheel 281 is coupled to the worm 279 so as to be detected by a film position sensor 289 fixed to the worm 279 . When the idle gear 271 rotates once, the worm 279 advances by one lead, so the wheel 281 rotates by one tooth. Therefore, even when the film 3 is wound around the left film shaft 199 or the right film shaft 201 several times, the initial position of the film 3 can be reliably detected.

The drive system of the cartridge 177 will be explained.

FIG. 15 is a front view of the drive system of cartridge 177,
FIG. 6 is a side view of FIG. 15. Figures 15 and 16
In the figure, left film shaft gear 263 and right film shaft gear 267 are connected to idle gear 271. Gear 291. It is connected to a pulley 299 integrated with a gear 297 via a boo'J 293 and a belt 295.

Further, the left camshaft gear 301 and the right camshaft gear 303 are the gear 305. Pulley 307° gear 309,
It is connected to a pulley 317 integrated with a gear 315 via a pulley 311 and a belt 313.

Cartridge drive motor 319 connects cartridge drive motor pulley 321 . Belt 323. Driving force is transmitted to the moving gear 329 via the pulley 325 and gear 327. The moving gear 329 is movable in the axial direction of the stud 331, and as shown in FIG. 16, pressure is always applied to the right side by a compression spring 333. Also, on the left side of the moving gear 329,
The arm 337 of the solenoid 335 is brought into contact with the pressure.

The drive switching mechanism 333 of the cartridge 177 will be explained.

As shown in FIGS. 15 and 16, gear 297 is integrated with pusher 299. Gear 315 integrated with pulley 317. Moving gear 329, stud 331
．． It is composed of a compression spring 333 and a solenoid 335. When cartridge 177 is not installed or film 3
When driving, the moving gear 3 is moved by the pressure of the compression spring 333.
29 is located on the left side in FIG. 16 and is connected to a gear 297. The driving force of the cartridge drive motor 319 is
The left film shaft gear 26 is connected to the drive transmission mechanism described above.
3 and the right film shaft gear 267.

When the left camshafts 1 to 235 and the right camshaft 237 are driven, a voltage is applied and excited by the solenoid 335, and the arm 337 of the solenoid 335 biases the pressure horn against the moving gear 329, resisting the biasing force of the compression spring 333. The moving gear 329 is then moved to the right in FIG. The moving gear 329 is located on the right side in FIG. 16 and is connected to the gear 315. Therefore, the driving force of cartridge drive motor 319 is transmitted to left camshaft gear 301 and right camshaft gear 303.

By using the drive switching mechanism 33 as described above, there is no need to use two motors for driving the film and one for driving the camshaft.
There is no need to use multiple recording devices, and the recording device 13 can be made very small and inexpensive.

The operation of cartridge 177 will now be explained.

As shown in FIGS. 11, 14, 15, and 16, the cartridge 177 is installed in the recording device 13, and the power of the recording device 13 is turned on.

Voltage is applied to solenoid 335 , causing movement gear 329 to connect with gear 315 and drive cartridge drive motor 319 .
The driving force is transmitted to the left camshaft gear 301 and the right camshaft gear 303, and the left camshafts 1 to 235 and the right camshaft 237 shown in FIG. 11 rotate.

The outer peripheries of the left camshaft 235 and the right camshaft 237 come into contact with the rotating plates 227, 229, and the rotating plates 227, 229 rotate in the direction B shown in FIG. Contact the film 3. Thereafter, the voltage applied to the solenoid 335 is stopped, the moving gear 329 is connected to the gear 297, and the driving force of the cartridge drive motor 319 is transmitted to the left film shaft gear 263 and the right film shaft gear 267. The right film shaft 201 rotates.

Left film shaft 199 and right film shaft 2
01 rotates to the right, that is, clockwise in FIG. 11, and winds the film 3 onto the right film shaft 201. At this time, wheel 2 shown in FIG.
81 rotates to the left, that is, counterclockwise in FIG.
stops.

Thereafter, voltage is applied to the solenoid 335, the left camshaft 235 and the right camshaft 237 rotate, the rotation plates 227 and 229 rotate in the direction shown in FIG. 3 to the left curved surface portion 205 and right curved surface portion 207 of the container 203, and the initial operation is completed.

When a recording command is sent from a control device (not shown) connected to the recording device 13, voltage is applied to the solenoid 335, the left camshaft 235 and the right camshaft 237 rotate, and the rotating plates 227 and 229 move to the 11th Rotating in direction B shown in the figure, the sealing members 213, 215 come into contact with the film 3 at their edges. Then solenoid 3
35 is stopped, and the left film shaft 19
9 and the right film shaft 201 rotate to the left, that is, counterclockwise, and the film 3 is wound onto the left film shaft 199.

When the microhole forming area 197 shown in FIG. Driving is started in synchronization with the paper transport motor 143. The leading edge of the recording paper 17 passes through the leading edge of the recording section guide member 51, and after a certain period of time, a voltage is applied to the heating element 9 to start recording.

After the voltage application to the heating element 9 is stopped and recording is completed, the rear end of the recording paper 17 passes the tip of the recording section guide member 51. Furthermore, film 3 is attached to left film shaft 1.
99, and after a certain period of time has elapsed, the cartridge drive motor 319 stops. The position of the film 3 at this time becomes the initial position when recording is performed by moving the film 3 rightward in FIG. 11, and the recording operation is completed.

Note that even when recording is performed by moving the film 3 in the right direction, it is sufficient to follow the above-mentioned operation procedure, and the film 3
Continuous recording is performed by reciprocating the data.

When recording is finally completed, the left film shaft 199
Then, the right film shaft 201 is rotated to the right in FIG. 11, that is, clockwise, and the film 3 is wound onto the right film shaft 201 until the detection hole 287 of the wheel 281 is detected by the film position detection sensor 289. After the position of the film 3 is detected, the cartridge drive motor 319 temporarily stops. Then solenoid 335
Voltage is applied to rotate the left camshaft 235 and the right camshaft 237, and the rotation plates 227 and 229 rotate.
rotates in the direction shown in FIG.
3.215 comes into pressure contact with the left curved surface portion 205 and right curved surface portion 207 of the container 203 via the film 3, and the final operation is completed. Thereafter, the power to the recording device 13 is turned off.

Note that the present invention is not limited to the above-described embodiments, but can be implemented in other embodiments by making appropriate changes.

[Effects of the Invention] As explained above, according to the present invention, a recording medium having a large number of small holes or recesses and a thermal head having heat generating elements arranged in high density are used, and no nozzles are used.
Essentially, no clogging of the nozzle or accumulation of air bubbles in the nozzle occurs, and high-resolution, high-speed recording is possible.

In addition, in the present invention, the thermal head is attached to the recording apparatus main body via a thermal head position adjustment mechanism so that the position of the thermal head can be adjusted with respect to the path of the recording material. The height and inclination can be adjusted with respect to the main body of the recording device without requiring high precision, and the positioning can be performed reliably.

Furthermore, if the thermal head position adjustment mechanism uses simple mechanical elements such as screws and springs, the configuration can be simplified.
It is also easy to operate.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for explaining the recording principle, FIG. 2 is a side view of a recording apparatus showing an embodiment of the present invention, and FIG.
The figure is an enlarged side sectional view of the ■ arrow part in Figure 2.
The figure is a side view of the upper frame of the recording device in FIG. 3. Figure 5(a) is a diagram of the non-recording state when the arm is positioned upward, Figure 5(b) is a diagram of the recording status when the arm is positioned downward, and Figure 6(a) is a diagram of the recording status. A perspective view of the paper discharge section of the apparatus and an outline view of the star-shaped plate are shown in FIG. 6(l)). Fig. 7 is a front view of the drive system that connects to the recording section and paper ejection section of the recording device, Fig. 8 is a plan view of Fig. 7, and (a) of Fig. 9.
) is a plan view of the first recess of the thermal head, and (
b) is a side view of (a) in Fig. 9. Fig. 10 is a plan view of the cartridge when installed in a recording device, and Fig. 11 is a sectional view of the recording section of the cartridge. (a) is an outline drawing of the film, (b) in Figure 12
) is an enlarged view of the micropore-forming region of the film. Figure 13 is a cross-sectional view of the ink supply section of the cartridge;
FIG. 4 is a cross-sectional view of the drive section of the cartridge, FIG. 15 is a front view of the drive system of the cartridge, and FIG. 16 is a side view of the drive system of the cartridge. Figure 17 is an explanatory diagram of the cooled type of the conventional inkjet method, and (a) and (1) in Figure 18) is an explanatory diagram of the bubble jet type 1 of the bubble inkjet method. In the explanatory drawings, (a) is an exploded view, and (b) is an explanatory view of ink droplet formation. 1... Micropore 3... Film 5... Ink 7... Thermal head 9... Heat generating cable Child 13...Recording device 17...Recording paper 2
5... Recording section 27... Paper discharge section 39... Upper aligning roller 47... Head roller 167.
...Holder 169...Fixing screw 171...
Adjustment screw 173...Block 175...Compression spring 177...Cartridge 203...Container 20
9.211... Ink application member 213.215... Seal member 219.221... Plate 223.225... Leaf spring 227.229... Rotating plate 235... Left camshaft 237.・Right camshaft

Claims (4)

[Claims] (1) A large number of small holes or recesses for holding ink are formed in the recording medium, and the small holes or recesses holding ink are selectively heated with a heating element placed in a thermal head to generate bubbles. A recording device that ejects ink filled in a small hole or a recessed part by pressure of the recording material and applies it to the recording material, and has a thermal head position adjustment mechanism to adjust the position of the thermal head with respect to the path of the recording material. A recording device characterized in that a thermal head is attached to a recording device main body via a thermal head. (2) The thermal head position adjustment mechanism includes a plurality of holder members fixed to both ends of the thermal head, a plurality of block members positioned and fixed to the recording device main body, and a plurality of fixing members that connect the holder members and the block members. A position adjustment member for adjusting the position of the thermal head with respect to the recording device main body; and an elastic member interposed between the holder member and the block member. The recording device according to scope 1. (3) The recording device according to claim 2, wherein the fixing member is a screw that is adjustably screwed into the holder member, and the tip of the screw is in contact with the block member. . (4) The recording device according to claim 2, wherein the position adjustment member passes through the holder member and is adjustably screwed onto the block member.