JPS61291162A - Recorder - Google Patents

Abstract

PURPOSE:To prevent clogging, enable high-speed recording and support a recording material at a predetermined position so that favorable recording can be performed, by providing a recording material feeding mechanism for feeding a recording material by attracting it at a part opposed to a heating element. CONSTITUTION:The recording material feeding mechanism part 43 comprising an attraction feeding mechanism 43a and a belt-pressing/retracting means 43b and provided in the sate of being floated relatively to the heating elements 3... can be turned with the shaft of the first roller 12 as a center. With a register roller 112 started rotation, the leading end of a recording paper 8 is clamped between the roller 11 and an attraction feeding belt 15 of the attraction feeding mechanism part 43a, and the paper 8 is clamped with an appropriate pressure by a roller-pressing spring 25, and is fed by the roller 11, the first roller 12 and the belt 15. The paper 8 is pressed against a recording part guide 31 by the function of a belt-pressing/retracting means 43b, and is fed while making frictional contact with the guide 31. The guide 31 is fixed on the basis of a thermal head 1, and a frictional contact surface of the guide 31 is maintained at a predetermined distance from the heating elements 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a novel inkjet type recording device applicable to, for example, printers, facsimile machines, and the like.

[Technical background of the invention and its problems]

Conventionally, various non-impact recording methods have been proposed, such as an electrostatic method, a thermal paper heating method, a 1T-maru transfer method, an electrophotographic method, and an infusiera method.

Under these circumstances, the inkjet method is a very popular recording method that has various advantages such as low noise, low power, small size, easy multi-color printing, and inexpensive components. Various developments are underway from a certain point.

Examples of inkjet printing methods include a pressure element method, a static pressure acceleration method, and a bubble jet method. However, all conventional inkjet methods eject ink from the tip of a nozzle, and the problem of nozzle clogging has not been completely solved, so it is currently difficult to get much attention to it. In addition, it has the disadvantage that the recording speed is slow because it is difficult to record many dots of the same poem because a large number of nozzles cannot be arranged closely together.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and its purpose is to provide a completely new inkjet method that does not use a fixed nozzle, which is free from clogging and capable of high-speed recording. The object is to provide a recording device that can hold the image in a predetermined position and perform good recording.

(Summary of the Invention) In order to achieve the above object, the present invention fills a recording medium having a large number of small holes or recesses with recording ink, and allows the small holes or recesses filled with ink to reach the surface of a heating element. By selectively heating the heating element when the heating element is pressed, the pressure of the generated bubbles causes the ink in the small holes or recesses to be ejected toward the recording material, thereby performing recording on the recording material. At the same time, a recording material conveyance mechanism for suctioning and conveying the recording material is provided in a portion facing the heating element, and the recording material is held firmly in close contact with the WI feeding surface of the recording material conveyance mechanism. This makes it possible to maintain a constant gap between the surface of the heating element and the recording surface of the recording target 4.

[Embodiments of the invention] The present invention will be explained below with reference to an illustrated embodiment.

Figure 1 is an explanatory diagram showing the recording principle. In the figure, 1 is a thermal head, and 2 is a small hole (orifice) with a diameter of 10 to 200 μm.
2a is a film as a recording medium made of metal, organic material, etc., in which a large number of . is a small hole filled with ink,
Reference numeral 6 indicates an ejected ink droplet, and 7 indicates a small hole from which the ink droplet was ejected.

When the film 2 is transferred in the direction of the arrow, the small IL 2 a of the film 2 that has passed through the ink reservoir where the ink 4 is stored.
... is filled with ink 4. Then, when the small holes 5 filled with the ink 4 reach the thermal head 1 where the heating elements 3 are installed, a voltage is selectively applied to the heating elements 3 for rapid heating. Sazeru.

Then, recording is performed by jetting out ink droplets 6 by the pressure of bubbles generated as the heating element 3 heats up.

FIG. 2 is a schematic vertical sectional side view showing the recording apparatus of the present invention. In the figure, 8 is recording paper as a recording material, and this recording M8 is a paper feed force sensor attached to the main body housing 134 of the apparatus. A large number of recording sheets 1 to 49 are stored at once, and the lower surfaces of these sheets on the take-out side are pushed upward by pushers and F springs 33 . It is possible to do so. The above paper feeding power Cera]~4
When 9 is attached to the device main body casing 134, the rubber magnet 47 attached to its tip magnetically attracts the plays 1 to 48 provided on the device main body casing 134 side, and is fixed to the device main body casing 134. are doing.

The shaft 139 to which the first feed roller 9 is attached is
As shown in FIG. 3, the paper feed solenoid 51 turns on and off.
It is configured to be interlocked with the paper conveyance motor 54 via a paper feed sprinkler latch 63 that is turned OFF and gears 56 and 55.

When the paper feed solenoid 51 is energized in response to a recording command from the image/data processing unit ffT33 (see FIG. 15) connected to the device, the paper feed spring clutch 63 is activated. ONI, as a result, the force of the paper conveyance motor 54 is transmitted to the shaft 139 via the gears 55, 56 and the paper feed spring clutch 63, so that the uppermost recording paper 8 in contact with the first feed roller 9 is fed. It has become.

Also, the paper feed cassette 49 is fed via the first feed roller 9.
The recording paper 8 taken out from the recording paper 8 rises along the first paper feed guide 44, and is further transferred to the first and second paper feeds via a pair of feed rollers 10.10 disposed in the transport direction and rolling into contact with each other. The recording material is fed between the guides 44 and 45, and the recording material is transported I.
It is fed until its tip abuts the contact portion between the suction conveyance belt 15 of the I structure 43 and the stopped registration roller 11 that rolls thereon, and waits in this state.

';&3, This device 11 is capable of feeding paper from the manual paper feed tray 17 in addition to the paper feeding force M1 from 49 to the paper feed tray 1. The recording sheets 8 such as thick paper are taken out one by one from the lowest end by the action of the second feed roller 19 and the separating roller 18, Similarly to the above case, the suction conveyance bell h 15 and the registration roller 11 in the stopped state F which is in rolling contact with the suction conveyance bell h 11 are fed until their tips abut against any contact portion, and wait in this state.

The registration roller 11 is designed to be interlocked with the paper conveyance motor 54 (see FIG. 3) via a clutch section (not shown), and rotated when the clutch section is turned on. The timing for starting and stopping the rotation of the registration roller 11 is such that the leading edge of the recording paper 8 is at the 11th Er.
) 21 and the continuity between the first button 1 and the sensor 22 is turned off.
It is determined that after a certain period of time has elapsed since reaching F, the leading edge of the recording paper 8 hits the rolling contact portion of the registration roller 11 and an appropriate slack is generated.

By doing this, the tip inclination (skew) of the recording M8 is corrected, and the tip of the recording paper 8 is reliably pushed into the rolling contact portion of the registration roller 11, and the registration [1-
This ensures that the recording paper 8 is caught between the roller 11 and the suction conveyance belt 15.

Note that a paper waste removal brush 50 for removing paper waste adhering to the circumferential surface of the resist n=U11 is in sliding contact to prevent dirt on the recording section of the M8 for recording. There is.

The recording material conveying mechanism 43 includes the first and second rollers 12, 14, these rollers 12. ．． 1
Suction transport bell hung over 4!・A suction conveyance mechanism section 43a as a first floating section in which the air suction duct 30 is integrated into a unit, and a second floating section incorporated in the suction conveyance mechanism section 43a as the first floating section. It has a belt guide plate 7, and by displacing the belt guide plate 27, the suction conveyor belt 15 is moved to the recording section guide 31.
It is composed of a belt pressing/retracting means 43b that presses the belt to the side or retracts it.

The Pell 1 to pressing/retracting means 43b have the following configuration. That is, the belt guide plate 27 as the second floating part is housed in a state in which one end is rotatably supported in the air suction duct 30 and the other end is always urged downward by the belt guide plate pressing spring 26. The suction conveyance bell l-15 is pressed against the recording section guide 31. Further, an adsorption member 141 is attached to the back surface of the pressing plate 27 so as to face the electromagnetic coil 28, and when the electromagnetic coil 28 is activated, the pressing plate 27 is attached to the pressing spring 26. It is adapted to be displaced against the urging force of.

In addition, the suction conveyance mechanism section 43a as the first floating section is elastically moved by the roller pressing spring 25 hung on the tenth roller 12, and the belt guide plate 27 as the second floating section is elastically moved by the pressing spring 26. When thick recording paper 8 is supplied, it can be displaced by that amount.

Further, the impact of the guide plate 27 on the bell 1 as the second floating part is damped by a high viscosity fluid buffer 29.

The recording material conveying mechanism 43, which is composed of the suction conveying mechanism section 43a and the belt pressing/retracting means 43b and is provided floatingly with respect to the heating element 3... It is configured to be able to rotate freely around the center, and can be rotated in the direction of the arrow in FIG. 2 to open the recording paper conveyance path. ' As the registration rollers 11 start rotating, the leading edge of the recording paper 8 is brought into contact with the registration rollers 11 and the suction conveyance mechanism section 4'.
The recording paper 8 is caught between the suction conveyor belt 15 of 3a, and is held under appropriate pressure by the biasing force of the roller pressing spring 25. Then, the registration roller 11 and the first
The clamping conveyance force of the 0-ra 12 and the suction conveyance force of the suction conveyance bell].15.

At this time, the recording sheet 8 is pressed against the bell [by the pressing/retracting means 43b
The paper is pressed against the recording section guide 31 by the action of , and is conveyed while being rubbed against the recording section guide 31 .

The recording section guide 31 is fixed with reference to the four normal heads 1, and the rubbing surface of the recording section guide 31 is maintained at a constant interval from the heating cables 3.... Then, the recording surface (lower surface) of the recording paper 8 is in contact with the surface of the film 2 that moves while being in close contact with the heating cable 3 disposed in the head section of the thermal head 1, and there is a minute gap, for example, a 0.2 anchor 1. It has a structure that allows it to be moved while always maintaining the

In fact, according to the performance test of the example, it was confirmed that the gap between the surface of the film 20 and the recording surface must be between 0.1 and 0.3 hazy in order to maintain the resolution of 8 lines/InIR. It was done.

However, if the gap is set to 0.1 m or less, when the ink 4 soaks into the recording paper 8, this part will expand and the recording surface will come into contact with the surface of the film 20, causing the recording surface to become dirty with the ink 4. There may also be a risk of it happening! Approved. Therefore, in this embodiment, the recording section guide 3 is attached to the recording section guide fixing reference protrusion 135 (see FIG. 6) of the thermal head 1.
Press the arm part of No. 1 and make the gap 0.200, (1
It is strictly controlled to keep it at 5m.

When the leading edge of the recording paper 8 moves further forward, it is nipped and transported between the 20th roller 14 of the suction transport mechanism section 43a and the paper ejection roller 13. At this time, the recording surface of the journal paper 8 is supported in a dotted manner by the nail-shaped roller portion 104 of the paper ejection roller 13, and reference roller portions 105 and 106 are in rolling contact with the suction conveyance belt 15 at both ends. Since the paper is transported without excessive pressure being applied, the undried recorded image is not disturbed. (See FIG. 7) Further, the recording paper 8 moves forward by one stroke, and its rear end passes through the rolling contact portion of the registration roller 11 and the tenth roller 12. At this time, the rear end portion of the recording M8 receives the full load of the recording material conveyance mechanism 43 and is conveyed while being rubbed against the green portion guide 31. In other words, the recording paper The basic conveyance force of 8 is only the suction conveyance force of the suction belt 15, and since the conveyance is carried out while receiving a large frictional force, the conveyance is accompanied by uncertainty.

However, in this embodiment, the force for pressing the recording paper 8 against the recording section guide 31 is transmitted through the belt pressing/retracting means 43b, and the belt guide plate 27 as the second floating section Due to the reaction force from the section guide 31, the high viscosity fluid M is passed through the M cylinder 29 while resisting the bell 1-guide plate pressing spring 26, and is moved upward relative to the housing section of the suction conveyance mechanism section 43a as the first floating section. be pushed up.

In this way, after the trailing edge of the recording paper 8 has passed, the registration rollers 11 and the suction conveyance belt 15, which have been temporarily separated, come into rolling contact again, so that the pressure applied to the recording paper 8 is reduced and the belt guide plate 27 Smooth conveyance of the recording paper 8 is realized with only the total load and the urging force of the belt guide plate pressing spring 26.

Further, the recording M8 moves forward, and when the rear end of the recording paper 8 passes the edge of the recording unit guide 38 on the thermal head 1 side, the bell]・guide plate 27 receives no reaction force from anywhere, and the belt The entire load of the guide plate 27 and the force of the belt guide plate pressing spring 26 push the belt guide plate downward.

Therefore, as soon as the trailing edge of the recording paper 8 passes the edge portion of the recording unit guide 31, the surface of the fill 1120 and the recording unit of the recording unit 11 come into contact, and the trailing edge of the recording paper 8 is touched by the ink 4.
This has the problem of contamination.

However, in this embodiment, this problem is solved by the measures described below. First, since the belt guide plate 27 as the second floating part has already been pushed upward through the high viscosity fluid buffer 29 as described above, the rear end of the recording paper 8 is placed above the recording part guide 31. Even after passing through the edge portion, the downward movement will slowly descend due to the buffering effect of the high viscosity fluid buffer 29. Therefore, while the recording surface of the recording sheet 8 approaches the surface of the film 2, the rear end of the recording sheet 8 can pass through the heating element 3.

Furthermore, in this embodiment, the leading edge or trailing edge of the recording paper 8 is folded or bent to prevent the recording paper 8 from coming into contact with the surface of the film 2. The electromagnetic coil 28 is excited so as to move away from the surface of the film 2 between ±6 angles at each end with the heating cable 3 in between, and the Pel 1 to the guide plate 27 as the second floating part etc.
The whole thing is sucked upward.

In this way, the recording paper 8 does not come into contact with the film 2 and get dirty, and also has an extremely small gap [1-
The paper passes through the arrangement section of the tray 13 and is discharged onto the discharge paper i-ray 16 in a neatly arranged state.

Also, when the paper is ejected, the trailing edge of the recording paper 8 is at the 21st E.
1123 and detects the rising signal of the second photo sensor 924 to ensure that the recording paper 8 has been ejected.

Next, referring to FIG. 2 and FIG. 3, the ink container 64 is
From distribution media car 1 ~ Film car 1 as a Ritsuji ~
Supplying ink to the cartridge 40 and film car 1-
The supply of ink from the ink supply section of the ridge 40 to the film 2 will be described.

The film car 1 to the cartridge 40 and the ink container 64 are separable. The ink 4 is stored in an ink container 64, and this ink container 64 is attached to the film cartridge 4.
The ink container attachment of No. 0 is screwed into the part 65 and fixed.

At this time, the transparent ink supply tube 7 of the ink container 64
1 pushes up the valve 68 of the film cartridge 40 that is in close contact with the ink container attachment seal 73 against the biasing force of the cartridge 1-ridge valve spring 69.

On the other hand, the valves 68 of the film cars 1 to ridge 40 push up the ink container opening/closing rod 70, and therefore push up the valve 67 of the ink container 64 against the valve spring 66, causing the ink 4 in the ink container 64 to be pushed upward. Let it flow out. The ink 4 that has flowed out from the ink container 64 flows out until the diagonally cut tip of the transparent ink supply tube 71 is filled, and the ink 4 flows out until it fills the obliquely cut tip of the transparent ink supply tube 71, and then flows through the small hole and ink supply conduit formed around the valve 68 of the film cartridge 40. 94 to the fine ink supply channels 72 and 93 (see FIG. 6) formed at the bottom of the container portion 77 of the film car 1 to the storage 40).

The ink 4 further soaks into an ink supply member 37, 39 made of felt, and is passed through the ink supply member 37, 39 to the film 2.
The ink 4 is applied to the ink 4, and therefore the small holes 2a of the film lx 2 are filled with the ink 4, and air bubbles (
bubble) is used as a recording ink droplet 6.

In this way, when the ink 4- is consumed and the level of the ink 4 drops from the diagonally cut portion at the tip of the transparent ink supply tube 71, an air suction passage 74 installed in the ink supply section of the film car 1-ridge 40 is opened. More air is sucked in, and this air flows into the ink container 64 through the diagonal cut portion of the transparent ink supply tube 71.
New ink 4 is leaked.

By the way, the air suction passage 74 is located at the upper part of the ink supply section, and the air volume within the ink supply section is made as small as possible as seen from FIGS. 2 and 3. A first surplus ink scraping member 41.90 made of rubber and a second surplus ink scraping member 4
According to 2.89, the air enters and exits the ink supply section through the small holes 2a of the film 2 passing through the first and second surplus ink scraping members 41, 90, 42, 89. Therefore, it is possible to replenish the ink 4 from the ink container 64 mentioned above to the ink supply section only when the film 2 is being moved, and it is possible to replenish the ink 4 from the above-mentioned ink container 64 only when the film 2 is being moved. This is not done when it is not operating.

Therefore, ink 4 is applied to the film, car 1 to cartridge 4o.
This makes it possible to prevent the problem of leakage and scattering from the film cartridge 40 due to excessive supply of the film.

Furthermore, since the ink 4 is supplied to the film 2 through the ink supply member 37, 79 made of felt as shown in Figs. Since the ink 4 can be prevented from forming a surface and the ink 4 is captured by the force of surface tension between the mu, it becomes easy to prevent the ink 4 from leaking to the outside of the film cartridge 40.

Next, the operation of attaching the ink container 64 to the film cartridge 18-40 (removing it from the first part 65) will be described.

When the ink 4 in the ink container 64 is consumed by the above-mentioned replenishment of the ink container 4, the level of the ink 4 further decreases and is poured into the transparent ink supply tube 71. At this time, light from the ink detection LDE 75 begins to pass through and the ink detection photosensor 76 begins to be turned on. The rise of this signal is detected to detect the absence of ink in the ink container 64.

The device also displays the ink-out detection signal on the display section of the device or on the display section of the image/data processing device 133 connected to the device, as described later. If there is ink 4, a message is displayed indicating that there is no ink in the ink container 64, that is, indicating that the ink container 64 should be replaced.

In this way, the ink container 64 is replaced. In this embodiment, the removal procedure and the valve 64 of the ink container 64 are replaced.
7. The operation of the valve 68 of the film cartridge 40 is completely opposite to that during installation.

That is, if the valve 68 of the film cartridge 40 is -
4-4, the force of the cartridge valve spring 69 causes the ink container holder 1 to come into close contact with the lower surface of the seal 73, and the ink 4 in the film cartridge 40 is attached to the ink container mount 65.
This prevents the liquid from leaking and scattering to the outside.

By the way, in this embodiment, the ink container 64 is easily 100cm long.
Ink 4 except for the ink supply tube 71 mentioned above in c.
The container is opaque in consideration of its weather resistance, and the normal recording density is 2000 to 50
On the other hand, the film cartridge 40 records approximately 100,000 sheets/A4 due to problems such as clogging due to paper dust, mold, and dried ink in the small hole 2a of the film 2, and has to be replaced every 3 years. Is required. For this reason, the film car 1 to the cartridge 40 and the ink container 64 are separable, and the structure is such that leakage and evaporation of the ink 4 into the respective containers can be easily prevented.

The attachment of the film cartridge 4o to the recording apparatus will now be described.

In this apparatus, the thermal head 1 is fixed to the main body housing 134, and the film cartridge 40 is shown in FIG.
) and the container located in the film exposed portion 86 of the car 1 to the cartridge 40 shown in FIG. ing.

- In other words, in FIG. 3, when the film cartridge first support part 60 is inserted into the hole valve of the main body housing 134 and the film cartridge second support part 61 provided at the other end is pushed down, the cartridge fixing spring 62 is released. The head of the fixing spring 62 falls into the recess of the film cartridge second support part 61, and the film cartridge 40 moves to the right.
is now fixed.

As described above, since the container portion of the film cartridge 4o has a window shape, the film cartridge 40 has a structure that provides sufficient strength.

Furthermore, since the mounting is as described above, the film cartridge 40 can be easily attached and detached, and the ink container 64 can be easily attached and detached.
It can be easily attached and detached even if it is still attached. In other words, it is now possible to easily change 40 colors of ink. When the film cartridge 40 is attached or removed, the recording member 43 rotates as shown by the arrow in FIG. The section is wide open, making it easy to remove paper jams in the recording section, remove paper waste from the film 2, and replace the film cartridge 40.

In addition, in order to prevent the ink 4 remaining in the film cartridge 40 from leaking or evaporating when the film cartridge 40 is removed, the film cartridge 40 is provided with a cartridge lid 85 as shown in FIG.
The lid 85 rotates as shown by the arrow to cover the exposed film portion 86, and the protrusion of the lid 85 touches the first surplus ink scraping member 41 of the film cartridge 40.
．． 90 and the second surplus ink scraping member 42.89 to seal the film cartridge 40.

In addition, the ink absorbing members 34 and 35 shown in FIG.
As you can see, during the film cartridge @ theory, the excess ink 4 that had accumulated on the base of the thermal spatula h1 ran down through the wall of the thermal head 1! However, in this embodiment, the thermal head 1
Ink absorbing members 34 and 35 that are in contact with the thermal head 1 are attached to the lower part of the ink absorbing members 34 and 35, which absorb the ink 4 that is about to run down and scatter, thereby preventing the above-mentioned problem.

Next, the operation when driving the film 2 will be described.

Figure 4(a) shows the recording medium movement! FIG. 4(b) is a side view of the driving portion of the film transfer 11 mechanism as shown in the horizontal view.FIG. 4(b) shows a plan view of the same portion. The film 2 rotates clockwise and counterclockwise as viewed from the side of the film drive motor gear 58 as a recording medium drive motor gear of the film drive motor 52 as a recording medium drive motor, as shown in FIG. In (a), it moves upward and downward, respectively.

When the film drive motor gear 58 rotates clockwise, the film is driven! lIta car 78 is at the time bar 1 when viewed from the side of FIG. 4(a).
Rotate in the direction.

Since one end of the left-handed spring 84 fitted on the drive shaft 87 for moving the fill 11 as a drive shaft for moving the recording medium is engaged with the recess of the gear 78, clockwise rotation of the gear 78 causes the left-handed spring 84 to rotate. It acts in a direction to further wrap the film around the film moving drive shaft 87, and transmits the power of the gear 78 to the film moving drive shaft 87.

At this time, the film drive gear 59 as a recording medium drive gear also rotates clockwise, but the film drive shaft 88 as a drive shaft for moving the recording medium is rotated 111! It acts in the direction of loosening the right-handed spring 83 that has turned y relatively from the drive shaft 88. However, in the case of the embodiment, since the drive shaft 88 and the right-handed spring 83 rotate in the same direction, a substantial slip between the drive shaft 88 and the front distribution spring 83 occurs.

By the way, when attaching and detaching the film cartridge 4o, the film drive gears 59 and 78 are engaged with the motor gear 58 separately, so there is a risk that the film 2 will remain loose or that too strong tension will remain in place. are doing.

However, regarding the latter, in the configuration of this embodiment, the drive shaft 88 and the right-handed spring 83 slip, and such excessively strong tension can be alleviated.

Furthermore, as shown in the perspective view of the moving mechanism of the embodiment shown in FIG. Therefore, there is no loosening of the film 2, and the film 2 can be formed while rubbing the tip heating element 3 of the thermal head 1 with appropriate pressure. A ladder wheel 100 is fixed to one end of the drive shaft 87 for film movement by a bin 101, and a ladder wheel 100 is fixed to one end of the drive shaft 88 by an outer winding screw 95 whose one end is engaged with a torsion spring fixing portion 96. is fitted, the other end of the 1-john spring 95 engages with the recess 98 of the ladder wheel 97, and the ladder wheel 97 is connected to the ladder wheel 100 via a ladder chain 99.

By the way, in the poem where the ladder chain 99 is hung on the ladder wheel 97.100, the recording medium is wound through the spring 95, and the shaft 36 is in the reverse direction, and the recording medium is wound in the reverse direction. Shaft 38 is used for winding the film as a shaft.
The torsion spring 95 is properly twisted and installed (J) in advance so that it is biased clockwise. It is designed to create a certain amount of tension.

In this way, when attaching the film curl ridge 40 to the device, there will be no problem of the film 2 loosening (1), and the film 2 will always slide in close contact with the tip of the thermal head 1 with appropriate pressure. It looks like this.

Next, referring to FIG. 4(a), the driving gear 58 is
The installation of item 8 will be explained assuming that it rotates in the counterclockwise direction 81 when viewed from the side.

At this time, Kakeru! The II gear 59 rotates counterclockwise, and the right-handed spring 83 acts to become entangled with the film drive shaft 88. Thus, in this case, the film 2 is moved downwardly, and thus the film drive motor 52
The film 2 can be moved back and forth according to the rotation in the counterclockwise direction, and the film 2 is prevented from loosening when the film cartridge 40 is attached or removed by the action of the film tension mechanism 142 such as the right-handed spring 83 and the left-handed spring 84. Furthermore, the film 2 and the thermal head 1 are prevented from being damaged due to excessive tension.

In any case, by the operation of the film drive motor 52 described above, the film 2 is moved back and forth, and the multi-hole portion 92 of the film 2 is filled with the ink 4 in the heating element 3 of the thermal head 1, and the recording is performed. It is now possible to do so.

Furthermore, the film 2 is guided by guide means consisting of side guides for the film 2, which are shown at 102 and 103 in FIGS. 6 and 9, located at both ends of the thermal head 1, so that the film 2 can be prevented from shifting laterally. It has become.

By the way, it is necessary to know where the beginning and end of the multi-hole portion 92 of the film 2 are, and when starting recording, make sure that the starting position of the multi-hole portion 92 in the moving direction of the film 2 is at the location of the heating element 3. You need to be able to start recording when you arrive. In this embodiment, FIG. 4(a),
As shown in (b), a film position indexing board 80 as a recording medium position indexing board is attached to the drive shaft of the film drive motor 52, and the starting position of the multi-hole portion 92 of the film 2 is indicated on this indexing board 80. Film 1st position detection slit 81 as recording medium temperature 1 position detection slit 1 - Film 2nd position detection slit 81 as recording medium 2nd position detection slit
A position detection slit 82 is provided, and the position of the film 2 is detected by a film position detector 79.

When the film drive motor 52 rotates, the film position detector 7 senses short light pulses and reflected light pulses caused by the short slit 8.1 and the slit 8. Comparing with the built-in constant cycle clock pulse, at the rear end of the long slit in the clockwise direction of the slit 81, it is determined when the slit 81 is the slit 1~ for detecting the first position of the film; 82 single light pulse is detected by the film position detector 79, and is interpreted as the slit for detecting the second film position. In this way, the film drive motor 52
detects the film first position detection slit 81 and stops.

At this time, the non-perforated portion 91 of the film 2 (see FIG. 12)
Covering the exposed film portion 86 of the film cartridge 40, the multi-hole portion 92 covers the first and second portions of the film cartridge 40.
The second surplus ink scraping member 89.90 is accommodated in the ink supply section below. For this reason, the film cartridge 40 is held by the non-perforated portion 91 of the film 2, so that the film cartridge 40 is sealed from the outside air.

Therefore, the ink 4 in the film cartridge 4o evaporates, the viscosity of the ink 4 increases, and the speed at which the ink 4 flies out from the small holes 2a of the film 2 decreases, or the viscosity is too high to eject, which has a negative effect on recording. This problem can be prevented from occurring.

Now, when recording, images and
Upon receiving a recording command from the character data processing device 133 (see FIG. 15), the film 2 is held for a predetermined period of time before driving the first feed roller 9 to feed the recording paper 8 to the recording section. The film drive motor 52 is moved by rotating it counterclockwise as shown by the arrow in FIG. When the paper 8 arrives, the film 2 is moved in synchronization with the leading edge of the recording paper 8. At this time, the moving speed of the film 2 is 1t8 for recording.
The speed of movement is 20 hazy/'sec, which is 1/2 of the moving speed of 40 k/sec.

In fact, even when the speed of the recording paper 8 is varied between 10 and 100 m/sec, when the recording density of the recording paper 8 is 75%, the relative movement direction of the film 2 and the recording paper 8 is in the same direction. Regardless of the reverse direction, if the moving speed of the film 2 is V/4 or higher, the edge Dl is 0 (black edge, coverage rate 7).
5%) or more.

The pattern of this experiment is shown in FIG. Therefore, the movement width of the film 2 can be made shorter than the recording length (recording direction) of the recording paper 8, and therefore the multi-hole portion 92 of the film 2
The zero area could be made small, and the production of the film 2 could be made easier. That is, when the area of the multi-hole portion 92 is large, it is desirable to make the diameter (25 to 30 tt m) of the small holes 2a uniform over the entire area.
For example, the diameter is circumference)! A problem arises in that the density decreases near 2, resulting in uneven recording density. In this embodiment, since the area can be reduced, such problems can be prevented.

Now, as the film 2 moves in this manner, the rear ends of the multi-hole portion 92 on the side of the first and second surplus ink scraping members 89 and 90 reach the portion of the heating element 3. At this time, the film position detector 79 detects the second film position detection slit 82. Of course, in order for the positions of each part of the film 2 and the relative positions of the first and second position detection slits 8L 82 of the film position indexing board 80 to have the above-mentioned relationship, it is necessary to When setting the film 2, the first and second surplus ink scraping members 89
．． 90 side, and the film drive motor 52 allows the film 18 position detector 79 to detect the position of the long slit and the similar slit of the film first position detection slit 81. It is necessary to detect and stop it.

This embodiment is based on this assumption.

Now, when the recording sheets 8 are continuously fed and even-numbered recording sheets 8 are recorded, the first one of the multi-hole portion 92,
After the end of the second surplus ink scraping member 89 and 90 side reaches the film winding shaft 38 and the ink 4 is supplied, the film 2 is rolled in the opposite direction to the moving direction of the film 2 as previously described. Recording is performed in synchronization with the leading edge of the recording paper 8 after a certain period of time for the terminal end to move and reach the heating element 3 .

In addition, in continuous recording, when recording on odd-numbered recording sheets 8, the first and second surplus ink scraping members 41
．． The end of the multi-hole portion 92 on the 42 side is the film winding shaft 36
After the ink 4 is supplied to the heating element 3.
... and film 2 in synchronization with the leading edge of recording paper 8.
It is supposed to move.

Since recording is continued by such reciprocating movement of the film 2, continuous recording is possible even if the film is not endless.

Now, next, the first and second surplus ink scraping members 41.
90 and 42.89 are arranged so that the contact positions with the film 2 are different from each other as shown in FIG. It is positioned above. The necessity of this arrangement will be explained with reference to the first and second surplus ink scraping members 41 and 42.

First, wind the film 2 so that the shafts 36 and 38 reach the top of the thermal head 1 and point downward^i!
If you have to, put the recorded part in ]~ and record paper 8.
It is impossible to transport the heating element 3 close to the heating element 3 with a tight gap.

Therefore, if the first surplus ink scraping member 41.90 is positioned below the thermal head 1 side with respect to the film 2, the second surplus ink scraping member 42.89 The distance between and the area of the film exposed portion 86 of the film cartridge 40 of the film 2 can be reduced.

Therefore, it can be formed into a film cartridge pact. The effect of scraping off excess ink during movement of the film 2 is as follows.

First, the case where the film 2 moves in the direction of arrow G in FIG. 6 will be described. The film 2 supplied with ink 4 by the ink supply member 39 moves upward, and the first surplus ink scraping member 41 scrapes the surplus ink from the film 2. However, during recording, since the multi-hole portion 92 passes through the excess ink scraping member 41, the excess ink 4 moves by a certain amount to the side opposite to the thermal head 1 through the multi-hole portion 92.

Further, the ink 4 that has moved to the opposite side is scraped off by the second surplus ink scraping member 42, and moves to the thermal head 1 side again. In this way, when the film 2 moves in the G direction and the multi-hole portion 92 of the film 2 passes through the first and second ink scraping members 41.4.2, the film 2 has small holes. 2a..., sufficient stone ink 4 is applied and replenished over the entire surface of the film 2.

Therefore, this makes it possible to reduce the film speed to 1/4 of the speed of the recording set 8, as described above.

Now, let's consider a case in which the multi-hole portion 92 moves downward through the first and second surplus ink scraping members 41, 42.

In this case, the second excess ink scraping member 42 is first removed.
The recorded surface of the film 2 is scraped off.

Therefore, when the excess ink 4 adhering to the surface of the film 2 is scraped off, the dust and paper powder adhering to the film 2 are also scraped off. In this way, the ink 4 accumulated at the tip of the excess ink scraping member 42 moves to the thermal head 1 side through the small holes 2a of the multi-hole portion 92 of the film 2.
Next, the first surplus ink scraping member 41 scrapes off &) again τ1, and it accumulates at the tip of the second surplus ink scraping member 41.

This scraped and accumulated surplus ink 4 is returned to the small holes 2 of the multi-hole portion 92 on the opposite side of the thermal head 1.
Move through a... In this way, the surplus ink 41 during recording is collected into the ink 4 supply section of the film cartridge 40.

On the other hand, the non-hole portion 91 of the film 2 is directed upward, that is, downward, toward the first and second surplus ink scraping members 4.
1. Hove the state when passing through 42). At this time, the surface of the film 2 opposite to the thermal head 1 has already been exposed to the second surface.
Since the second surplus ink scraping member 89 cleans the ink, there is no need for the second surplus ink scraping member 42 to scrape off the ink.

However, paper dust and dirt accumulate at the tip of the second surplus ink scraping means 42.

On the other hand, since the film on the thermal head 1 side has also been cleaned by the first surplus ink scraping member 90,
There is also almost no need for ink scraping by the first surplus ink scraping section 1141.

In this way, when the non-perforated part 91 of the film 2 covers the recording medium exposed part 7 of the film cartridge 40 and the exposed part 86 of the film 2, the exposed part of the film 2 is thoroughly cleaned, and the film cartridge 40 can be attached and removed. There is no danger of getting your hands dirty when doing so.

In addition, lengths M and N (・12th
Since the film exposure width (see figure 6) is longer than the film exposure width of the film cartridge 40 (see figure 6), the gap between the first surplus ink collecting member 41.9o and the second surplus ink scraping member 42.890 Air can be prevented from entering and exiting with just one pass.

Therefore, the evaporation of the ink 4 can be prevented and the viscosity of the ink 40 can be prevented from changing, so that the quality of recording and printing can be maintained constant.

Next, the operation for removing paper waste adhering to the film 2 will be described.

As described above, when the film 2 is moved in the G direction, the paper scraps and dust accumulated on the tip of the second surplus ink scraping member 42 are moved together with the film 2 while remaining attached to the film 2, and the paper scraps and dust accumulated on the tip of the second surplus ink scraping member 42 are moved together with the film 2 while remaining attached to the film 2, and are removed from the thermal head 1. It comes to the heating element 3 part at the top of . At this time, transfer film 2 to thermal head 1.
The suction belt 15 is moved back and forth several times with the heating element 3 in between, and at the same time the suction fan 53 shown in FIG.
Through the suction port 107 of the film 2, paper scraps and dirt from the film 2 are sucked into the air suction guide 57, where they are collected.

In this way, it is possible to remove paper dust and dirt that have adhered to the film 2, so that the multi-hole portion 92 of the film 2 can be removed.
This prevents the small holes 2a from becoming clogged with paper powder and dirt.

In this embodiment, the paper waste removal step is carried out after a certain period of time after a series of continuous printing is completed, so that the problem of reducing the recording speed does not occur.

In addition, since the paper waste removal step is carried out in the non-porous portion 91 of the filler 2 as described above, the ink 4 is removed from the film, so the ink 4, etc. is removed inside the air suction guide 57. It is also possible to prevent problems such as the ink 4 being sucked into the suction bells 1 to 15 or adhering to the suction bells 1 to 15.

Here, the operation of the film 2 when a series of recording operations is completed will be described.

After the series of recording operations is completed, the film 2 is moved for a certain period of time at a speed slower than the moving speed at the time of recording.

This is done in order to prevent the ink 4 from being depleted from the heating cords 3 . . . of the thermal head 1 until the series of recording operations is completed. after that,
The paper waste removal process described above is continued for a certain period of time, and then the non-perforated portion 91 of the film 2 is covered with the exposed film portion 86 of the film cartridge 40.

By the way, the first surplus ink scraping member 41.90 is made of an elastic member, and its edge toward the thermal head 1 is placed on the lower surface of the film 2 and comes into close contact with the thermal head 1. The ink 4 flowing down through the wall surface of the film 2 is passed through the small holes 2 of the multi-hole portion 92 of the film
a... so that it can be collected into the ink supply section of the film cartridge 40. Said first and second
The surplus ink scraping members 41.90 and 42.89 are made of a non-breathable material that prevents air and ink 4 from entering and taking out the inside and outside of the film cartridge 40.

Next, the relationship between the diameter of the small holes 2a of the film 2 and the pitch between the small holes 28 will be explained with reference to FIG.

In the figure, the arrow ■ indicates the moving direction of the film 2, and the line connecting the centers of the small holes 2a is an equilateral triangle with one side perpendicular to the arrow I. In the figure, "i" and "■" indicate the dimensions of the heating element 3, which are 100/1 m to 125 fzm, respectively. In the figure, the inside is small hole 2a (7)? ! In the example, the distance P between the centers of the 25 μm 1 small holes 2a is 45 μm, and the minimum distance 1- between the small holes 2a is 20 μm. According to experiments, using the above symbols, adjacent small holes 28
If the maximum distance between them is P, then t1≧2P, V≧2P −
If the relational expression 1-D is not satisfied and the resolution is 8 lines/M as in the example, the diameter of the small hole 2a is I') = 15~
In order to obtain good print quality, it was necessary to ensure that P was within the range of 35 μm and P = 40 to 50 tlm.

Special considerations are required to achieve good print quality and improve thermal efficiency during recording, regardless of the shape of the heating element 3.

FIG. 14 shows the cross-sectional shape of the heating element.

Here, the heating element 3 and the electrical conductor 108.121 are A
It is covered with a thin wear-resistant insulating film 136 such as 1203. Now, a voltage is applied to the heating element 3 and it is rapidly heated.
Bubbles are generated, and due to this pressure, the ink 4 in the small holes 2a filled with ink 4 is rapidly ejected and distributed.In this embodiment, the resistance of the heating element 3 is set to 30' (1Ω).
The recording ink is ejected by applying 24V with a pulse width of 10μ5e-c to perform recording. At this time, the energy consumed is approximately 2100erg/
It is element.

This energy is almost constant when the thickness T of the gap 124 between the heating element and the film 2 is 3 μm or more;
When the distance exceeds 0.011 m, the ejection force becomes poor and the print quality deteriorates. It was also found that when ■ becomes 3/1 m or less, the energy consumption of ink per 3 heating elements becomes 2100 or more, and it was found that the smaller the diameter is, the more energy is required. Therefore, in this embodiment, T=3μ
It was set as m. In the figure, 122 indicates a glass gelase layer.

Next, the following improvements have been made in terms of the durability of the heating element 3.

That is, as proposed in Japanese Patent Application No. 59-1.1851, the heating element (heating resistor) is mainly composed of ruthenium diluted with M (M is Ca, Sr, Ba, Pb).
, B i , and Te) at an M/R (r (atomic ratio)) of 0.6 to 2.

By using a metal oxide thin film in this way, there is no need to consider changes in resistance due to oxidation, as in the past, and it becomes possible to apply large amounts of power and reach high temperatures.
It also increases stability during long-term use. Also, since this metal oxide vA thin film has a relatively high See 1 -resistance value, a relatively small current is required to obtain a high heat generation density. Therefore, less current flows through the conductive layer connected to the heat generating resistor as in the conventional case, and heat generation from this portion can be reduced. Therefore, so-called print blurring that occurs during printing can be reduced. Furthermore, since such a thin film has a positive resistance temperature coefficient, it can improve the drawbacks of SnO2-based materials, and has the advantage of being able to apply a large amount of power from the initial stage, and being suitable for increasing speed.

Next, the structure of the thermal head will be described based on FIG. 11 and 13.

The structure of the heating cord 3 was described in FIG. 14, but in this embodiment, the heating cord 3 and the electric conductor 1(') 8, 121
is formed on a polyimide film 123 of about 15 zm, and has a structure in which this is adhesively fixed to a metal support 137 made of aluminum. It is estimated from the calculation of the consumption J energy distribution that most of the energy consumed by the pulsed heating of the heating cable 3 (70% 1
This means that the polyimide film 123, film l\, etc. are stored instead of being used for ejecting the ink 4. Note that 119 is a driver for the thermal head 1, and 120 is a protective cover.

In this way, if the A4 vertical feed line printer has a resolution of 8 lines/m and a recording speed of 40 um/V as in the example,
For example, when performing high coverage recording such as graphic recording, the maximum total energy consumption of the thermal head 1 is approximately 120 W, of which approximately 1 (17 W) is accumulated in the polyimide film 123 and the film. I end up being exposed to it.

Such heat accumulation raises the temperature of the film 2 and the ink 4 by -L to near the boiling point of the ink 4, and therefore, the situation in which the ink 4 is ejected changes depending on whether there is heat accumulation or not. In other words, the thermal layer history of recording causes a problem in that the density of the recorded image becomes uneven.

In this embodiment, the heating element 3 is placed on the electrical conductor 108.1 on the polyimide film 123 with a thickness of approximately 15 μm.
21 and is bonded to a metal support 137 made of aluminum, the heat energy generated and accumulated in the heating element 3 is quickly transmitted and diffused to the metal support 137.

Since the abutting support is made of metal, the thermal energy diffused into the metal support 137 conducts heat very quickly and acts to cool the heating element 30 portion. thus,
The heating cycle of the heating element 3 can be shortened and the recording speed can be increased.

Next, the structure of the ink presence/absence detection elements 109 and 112 of the thermal head 1 will be described according to FIGS. 9 and 10(a) and (b). In this embodiment, there is an exposed conductor portion 110°771 of the ink presence M detection element on both ends of the thermal head 1, and this exposed conductor portion 11
0,111 is wear-resistant/insulating film 136 (direct ink 4
It is designed to come into contact with.

By the way, the conductivity of the ink is 10°3S/cm, and if a voltage is applied, a small current can flow.

This state is shown in FIG. 10(a). The exposed conductor portion 11
0,111 by switch SW, 0N-OFFL,
When a voltage pulse is sent, if the ink 4 is at the top of the thermal head 1 as shown in FIG. 11 (temporarily decreases because a current flows between 1 and 111. This signal is amplified to detect the presence of ink. As shown in FIG. 10(b), when there is no ink 4, the Even if the switch SW operates in the same manner as above, no current flows, so the voltage drop as described above does not occur.

With this, it is possible to detect that there is no ink 4, and it is possible to prohibit the recording operation. As described above, in this embodiment, ink presence/absence detecting elements 109.1.12 are further attached to both ends of the row of heating elements 3... of the multi-maru head 1. Element 3・
It is possible to eliminate the problem of damaging the heating element 3 by heating and dry cooking.

In other words, for example, even if there is ink 4 at one end of the heating element row 3 and no ink 4 at the other end, the presence or absence of ink is detected by the signal ANr) of the ink presence detection element 109, 112. Since the ink is at 1, it is possible to detect when there is no ink.

In this embodiment, as described above, the thermal head 1 is provided with the ink presence/absence detection elements 109 and 112, and the ink container 64 is also configured with an ink detection LED 75 and an ink detection foot sensor 76 to detect the presence or absence of replenishment ink. This is because a detection means is provided. As described above, these ink presence/absence detection means each have their own roles, and at the same time, they can cause the recording apparatus of this embodiment to perform various operations depending on the combination of their respective states, as described below. I can do it.

First, in this embodiment, if a voltage is constantly applied to the ink presence/absence detection means 109 and 112 of the thermal head 1 described above,
There is a problem in that the ink 4 is electrolyzed and gases such as hydrogen and oxygen are generated and the exposed conductor parts 110 and 111 are corroded. The presence or absence of ink is detected by applying a voltage.

Furthermore, by doing this, the recording operation is stopped during recording after the recording operation has started, for example, after feeding the recording paper 8, and after a while, that is, the ink 4 reaches the thermal head 1. After that, when the recording operation is restarted, the problem of the accurate position of the recording paper being shifted due to the inertia of the feed roller etc. can be prevented in advance.

Further, in this embodiment, when the absence of ink is detected by the ink presence detection operation of the thermal head 1, the film drive motor 52 is driven to move the film 2 for a certain period of time as shown by arrows G and F in FIG. After the reciprocating operation, the ink presence/absence detection operation of the thermal head 1 described above is performed again, and the thermal head 1 remains at 1 to detect the presence or absence of ink.

Therefore, even if the ink 4 evaporates and disappears from the heating element array 3 of the thermal head 1 due to a temporary stop, the inside of the film cartridge 40 can be reached by restarting the ink presence detection operation described above. It can also detect if there is no ink 4, and it can also detect whether there is a new film cartridge 40.
It is also possible to check whether the ink 4 has reached the ink supply member 37, 39 inside the film cartridge 40 from the ink container 64 just after setting the film cartridge.

In this way, when it is detected that there is no ink in the thermal head 1, a status display regarding the lack of ink is displayed on the display section of the image, character, data, etc. processing device 133 to which the recording device is connected, and the operator is instructed to take appropriate action. It is meant to give instructions.

By the way, the ink presence/absence detection operation of the thermal head 1, the ink presence/absence detection signal, the replenishment ink presence/absence detection signal of the in/) container 64, and the operation of the recording apparatus are closely related. In fact, in this embodiment, only when the detection signal indicating the presence of ink in the thermal head 1 and the detection signal indicating the presence of ink in the ink container 64 are generated simultaneously, the recording material, that is, the recording M8
is fed toward the heating element 3. This can prevent the risk of running out of ink 4 during recording and having to interrupt the recording operation.

Further, as described above, when the detection signal indicating that there is no ink in the thermal head 1 and the detection signal that there is replenishment ink in the ink container 64 are generated at the same time, the signal from the film drive motor 52, film movement drive shaft 87, 88, etc. By operating the film moving mechanism, it is possible to cut off the ink 4 from reaching the heating element 3 of the thermal head 1.

At this time, the film moving speed is 20I during normal recording.
Although it is moved at MR/V, it is operated at a slower speed, 5 ttun/V in the example.

As a result, when there is no ink 4, the electric conductor 108.1 is
This prevents the wear-resistant insulating film 21 from being damaged.

In this way, the film moving mechanism is operated to move the film 2 back and forth until the ink-absence detection signal of the thermal head 1 changes to an ink-present signal.

Then, the image or character or data processing device 13 described above
The "holding" state is displayed in the display area 3 to inform that the ink 4 is being supplied to the thermal head 1.

By the way, when a detection signal indicating that there is ink in the thermal head 1 and a detection signal indicating that there is no replenishment ink in the ink container 64 are generated at the same time, an ink replenishment signal is sent to the display section of the recording device or the image, character, or data processing device 133. An instruction is displayed to prompt the operator to replace the ink container 64 and replenish new ink 4. In this way, a new ink container 64
is installed, and the detection signal indicating that there is no refilling ink in the ink container 64 changes to the detection signal that there is ink, the recording operation is stopped for a certain period of time, and the recording paper 8 is moved toward the heating element 3. Forbidden to transport J: There are also sea urchins.

This means that the ink supply members 37 and 39 in the film cartridge 40 are sufficiently filled with ink 4 and the film 2
The ink 4 is always supplied in the same state.

In addition, in this embodiment, the film cartridge 40 is activated by the above-mentioned means for detecting that the ink empty detection signal of the thermal head 1 and the ink empty detection signal of the ink container 64 are generated at the same time. It is detected that the cell number is not set to 1 or more. This pattern is shown in FIG. In fact, under the above conditions, the cartridge 4 has a small fill.
0 is not set, and film cartridge 4
Even if 0 is set, it indicates that there is no ink 4 in either the thermal head 1 or the ink container 64, but in both cases, the operator is largely instructed to replenish the ink. be.

As a result, the thermal head 1 is out of ink and the container 64 is out of ink even if there is no means for detecting whether the film cartridge 40 is placed in the device or not. In most cases, this means that the film cartridge 40 has not been fully loaded. In this manner, in this embodiment, it is detected that the detection signals of no ink in the thermal head 1 and no replenishment ink in the ink container 64 are generated at the same time, and it is detected whether the film cartridge 40 is attached or detached.

Next, the entire structure of the thermal head 1 is delivered according to FIG.

In the figure, 137 is a metal support made of aluminum, and the thermal head 1 has metal cooling members 114 and 115 on both sides of the metal support 137. It has sensing elements 117 and 118. In the figure, 113 and 116 are the thermal head 10
It is a heating element and is arranged parallel to and in the vicinity of the heating element 3.

In this embodiment, the heating elements 113 and 116 of the thermal head 10 are turned ON or OFF by the output signals of the temperature detection elements 117 and 118 according to changes in the environment and the thermal history of the heating element 3, so that the apex portion of the thermal head 1 is turned on or off. It is controlled so that the temperature is constant) 3 degrees.

First, the metal cooling members 114 and 115 are in direct contact with the film 2, and can effectively cool down the temperature rise of the thermal head 1 due to the rise in outside temperature and thermal layer history, and suppress the evaporation of the ink 4. The thermal layer history at the apex portion of the thermal head 1 is quickly conducted to the temperature sensing element, and the concentration near the heating elements 3 of the thermal head 1 can be controlled to always be constant.

Also, the metal cooling members 117 are provided on both sides of the heating element 3.
118 and heating elements 113 and 116 of the thermal head 1 are arranged, and the ink 4 and the ink-filled small holes 2a are conveyed to the surface of the heating element 3 even when the film 2 moves back and forth.
The portion is preheated at =54- prior to recording, so that the energy supplied by the voltage pulse iJ applied to the heating cord 3 is reduced.

In FIG. 15, 119 is a thermal head driver, and 126 to 132 are drive circuit sections.

As explained above, according to the above embodiment, the heating element 3.
Since the recording material conveying mechanism 43 for suctioning and conveying the recording paper 8 is installed in the portion facing the recording material conveying mechanism 43, the recording paper 8 is held in close contact with the conveyance surface of the recording material conveying mechanism 43, and the heating element 3 The gap between the surface of Since the transport belt 15 is used, the structure of the recording material transport mechanism 43 is extremely simple, and since it is highly elastic, it adapts well to changes in the thickness of unevenness on the suction surface side of the recording paper 8. Close adhesion can be performed well.Since the recording paper 8 is suctioned and conveyed with its recording surface facing down, it is possible to prevent the recording ink 4 from scattering, cracking, etc. on the recording paper 8. H has the feature of preventing stains on the recording surface.

In the explanation of the above-mentioned embodiment, the explanation was given for a film used as a recording medium having small holes, but the present invention is not limited to this, and the same purpose can be achieved even with a recessed part. Of course it can be done.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the present invention.

〔Effect of the invention〕

As described above, the present invention fills a recording medium with a large number of small holes or recesses with recording ink, and selects a heating element when the small holes or recesses filled with ink reach the surface of the heating element. The structure is such that recording is performed on the recording material by ejecting the ink in the small holes or recesses toward the recording material due to the pressure of the bubbles generated by heating the hn heating element. A recording material conveyance ms is provided at a portion opposite to the recording material to adsorb and convey the recording material, and the recording material is tightly held on the conveying surface of the recording material conveying mechanism, so that the surface of the heating element and the recording surface of the recording material are This is so that the gap can be kept constant. Therefore, it is possible to provide a recording apparatus that is free from clogging, capable of high-speed recording, and capable of holding the recording target (4) in a predetermined position and performing good Y recording.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an explanatory diagram of the recording principle, FIG. 2 is a schematic vertical side view, FIG. 3 is a schematic vertical front view, and FIG. 4(a) 4(b) is a plan view of the driving portion of the film moving mechanism, FIG. 5 is a perspective view of the film cartridge, and FIG.
The figure is a perspective view of the film moving mechanism and the ink supply section.
The figure is a perspective view of one side of the paper discharge, Figure 8 is a diagram showing the relationship between the diameter and pitch of the small holes and the shape of the heating element, and Figure 9 is a perspective view showing the ink presence/absence detection means of the thermal head. , FIG. 10(a) is an 11th explanatory diagram of the ink presence/absence detection means when ink is present, FIG. 10(t)) is an explanatory diagram of the operation of the ink presence/absence detection means when there is no ink, and FIG. 11 is an illustration of the operation of the ink presence/absence detection means when ink is absent. cross section,
Fig. 12 is an explanatory diagram of the shapes of the multi-hole and non-hole parts of the film;
FIG. 13 is a diagram showing the relationship between film speed and recording density, FIG. 14 is a diagram showing the structure near the heating element, and FIG. 15 is a schematic diagram of the electronic control circuit. DESCRIPTION OF SYMBOLS 1... Thermal head, 2... Recording medium (film), 2a... Small hole, 3... Heating element, 4... Recording ink, 5... Small hole filled with ink , 6...
- Ejected ink droplets, 7... Small holes from which ink droplets were ejected, 8... Recording material (recording paper), 12... First
0-ra, 14...20th-ra, 15...suction conveyance belt, 43...recorded material conveyance mechanism, 43a...suction conveyance mechanism section, 43b...pel 1~press/retreat means. Applicant's agent Patent attorney Takehiko Suzue Figure 9 Figure 8

Claims (3)

[Claims] (1) By filling a recording medium with a large number of small holes or recesses with recording ink, and selectively heating the heating element when the small holes or recesses filled with ink reach the surface of the heating element. , a recording device that performs recording on a recording material by ejecting ink in the small holes or recesses toward the recording material due to the pressure of generated bubbles, the recording material being placed in a portion facing the heating element; What is claimed is: 1. A recording device comprising a recording material conveyance mechanism that suctions and conveys a recording material. (2) The recording apparatus according to claim 1, wherein the recording material conveyance mechanism has a suction conveyance belt. (3) The recording apparatus according to claim 1, wherein the recording material conveyance mechanism suctions and conveys the recording material with its recording surface facing downward.