JPS61291160A - Recorder - Google Patents

Abstract

PURPOSE:To prevent clogging, enable high-speed recording and prevent a recorded part from being damaged at the time of discharging, by providing a discharging means with a paper-discharging roller which comprises a needle form roller part supporting a recorded part of a recording material in the form of points while being rotated, and reference roller parts provided at both ends of the needle form roller part and making rolling contact with an opposed feeding member. CONSTITUTION:When a leading end part of a recording paper 8 is moved further forward, it is fed by clamping it by the discharging means 143, namely, the second roller 14 in an attraction feeding mechanism part 43a and the paper-discharging roller 13 as a discharging roller. In this case, a recording surface of the recording paper 8 is supported in the form of points by the needle form roller part 104 of the roller 13, and since the reference roller parts 105, 106 provided at both ends of the roller 13 make rolling contact with an attraction feeding belt 15 provided as the opposed feeding member, the paper 8 is fed without any excessive pressure exerted thereon. Accordingly, since the paper 8 being discharged is supported in the form of points by the needle form roller part 104, undried image parts of the recorded part are not contaminated, and since the reference roller parts 105, 106 are provided, the paper 8 is prevented from being damaged under heavy pressing.

Description

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

[Technical disadvantages 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 thermal transfer method, an electrophotographic method, and an inkjet method.

With this range, the inkjet method is an extremely superior printing method that has various advantages such as low noise, low power, small size, easy multi-color printing, and inexpensive components. Since then, various developments are underway.

Examples of the inkjet method include a pressure element method, a static pressure acceleration method, and a bubble jet method. However, all conventional inkjet systems eject ink from the tip of a nozzle, and the problem of nozzle clogging has not been completely solved, so they have not been widely used. Furthermore, it has the disadvantage that the recording speed is slow because a large number of nozzles cannot be arranged closely together, making it difficult to record a large number of dots at the same time.

[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, and which also allows for The aim is to provide a recording device that does not damage the image.

[Summary of the invention]

In order to achieve the above object, the present invention fills recording ink into a recording medium having a large number of small holes or four parts, and when the small holes or recesses filled with ink reach the surface of the heating element, the heating element is activated. After performing recording 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 selective heating, the recording material on which this recording was performed The material is discharged through a discharge means, and the discharge means includes a needle roller section that supports the recording part of the recording material while rotating in a dotted manner, and a needle roller section that is located at both ends of the needle roller section and facing each other. The recording material is configured to have a discharge roller consisting of a reference roller portion that rolls into contact with a conveyance member, and the recording surface of the recording material is supported in a dotted manner and discharged.

[Embodiments of the invention]

Hereinafter, the present invention will be explained 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 20 cm.
2a is a film as a recording medium made of metal, organic material, etc. formed in large numbers; 3 is a heating element disposed in the head portion of the thermal head 1; 4 is a recording ink (hereinafter referred to as
(simply called ink), 5 is a small hole filled with ink,
6 indicates an ejected ink droplet, and 7 t, , indicates a small hole from which an ink droplet is ejected.

When the film 2 is transferred in the direction of the arrow, the ink 4 is filled into the small holes 2a of the film 2 that have passed through the ink reservoir section storing the 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. let

Then, air bubbles (
Recording is performed by ejecting ink droplets 6 due to the pressure of bubbles.

FIG. 2 is a schematic vertical side view showing the recording apparatus of the present invention. In the figure, reference numeral 8 denotes recording paper as a recording material. A large number of recording sheets 8 are stored at once in the tray, and the lower surfaces of these sheets on the take-out side are pushed upward by push-up springs 33 .
It is in a state where it can be contacted. When the four paper feed cassettes are attached to the apparatus main body casing 134, the rubber magnet 47 attached to the tip thereof is magnetically attracted to the plate 48 provided on the apparatus main body casing 134 side. 1
It is fixed at 34.

The shaft 139 to which the first feed roller 9 is attached is
As shown in Figure 3, the paper feed solenoid 51 is set to 0N with J:
- It is configured to be interlocked with the paper conveyance motor 54 via the paper feed spring clutch 63 which is turned OFF and the gears 56 and 55. Then, the paper feed solenoid 51 is connected to the image/data processing device 133 (the first
5) is excited in response to a recording command, the paper feed spring clutch 63 is ONL, and thereby the movement of the paper conveyance motor 54 is controlled via the gears 55, 56 and the paper feed spring clutch 63. 139, and the uppermost recording paper 8 in contact with the first feed roller 9 is fed.

Also, the paper feed force rollers 1 to 4 are fed via the first feed roller 9.
The recording paper 8 taken out from the paper feed guide 44 rises along the first paper feed guide 44, and is then passed through a pair of feed rollers 10.10 disposed in the transport direction and rolling into contact with each other to the first and second paper feed guides.
The sheet is fed between the feed guides 44 and 45 of the recording material conveyance mechanism 43 until its leading end hits the contact area between the suction conveyance belt 15 of the recording material conveyance mechanism 43 and the stopped registration roller 11 that is in rolling contact with the suction conveyance belt 15. Wait there.

Note that this device is capable of feeding paper from the manual paper feed tray 17 in addition to feeding paper from the paper feed cassette 49, and can feed recording paper such as thick paper set all at once on the manual paper feed tray 17. 8 are sequentially taken out one by one starting from the lowest end by the action of the second feed roller 19 and the separation roller 18, and the paper feeding force hit 7! As in the case of sheet feeding from I9, the sheet is fed until its leading end abuts the contact portion between the suction conveyance belt 15 and the stopped registration roller 11 that rolls into contact with the suction conveyance belt 15, and waits 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 rotation start and stop timing of the registration roller 11 is such that the leading edge of the recording paper 8 is at the 11th ED.
After a certain period of time has elapsed since the first photosensor 22 was turned off by blocking the light of the recording paper 8, the leading edge of the recording paper 8 abuts against the rolling contact portion of the registration roller 11 and is set so that an appropriate amount of slack is generated. It is being

By doing this, the leading edge inclination (skew) of the recording paper 8 is corrected, and the leading edge of the recording paper 8 is reliably pushed into the rolling contact portion of the registration rollers 11, and the recording paper 8 is This ensures the bite of the food.

Note that a paper waste removing brush 50 for removing paper waste adhering to the peripheral surface of the registration roller 11 is in sliding contact with the registration roller 11 to prevent the recording surface of the recording paper 8 from becoming dirty.

The recording material conveying mechanism 43 includes the first and second rollers 12.14 and the rollers 12.14 within the housing portion 140.
The suction conveyance belt 15 stretched over the air suction conveyance belt 15 and the suction conveyance mechanism section 43a as a first floating section which is formed into a unit 1 by incorporating the air suction ducts 1 to 30, and the suction conveyance mechanism section 43a as the first floating section. 43a, and by displacing the belt guide plate 27, the suction conveyance 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 belt pressing/retracting means 43b has the following configuration. That is, the belt guide plate 2 as the second floating part
7 is rotatably supported at one end in the air suction duct 30 and housed in a state where the other end is constantly urged downward by the belt guide plate pressing spring 26, and the suction conveyor belt 15 is moved to the recording section. It is pressed against the guide 31.

Further, an adsorption member 141 is attached to the back surface of the pressing plate 27 in a state facing the electromagnetic coil 28, and when the electromagnetic coil 28 is excited, the pressing plate 27
is adapted to be displaced against the urging force of the pressing spring 26.

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.

In addition, the impact of the belt guide plate 27 as the second floating part is
It is designed to be damped by a high viscosity fluid damper 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 rotatable 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 connects to the registration rollers 11 and the suction conveyance mechanism section 43.
The recording ME is caught between the conveyor belt 15 of
8 is held with appropriate pressure by the urging force of the roller pressing spring 25. Then, the registration roller 11 and the tenth
-512 and the suction conveyance force of the suction conveyance belt 15.

At this time, the recording paper 8 is pressed against the recording section guide 31 by the action of the belt pressing/retracting means 43b, and is conveyed while rubbing against the recording section guide 31.

The recording section guide 31 is fixed with respect to the thermal head 1, and the rubbing surface of the recording section guide 31 is maintained at a constant distance from the heating elements 3. The recording surface (lower surface) of the recording paper 8 moves while closely contacting the heating element 3 disposed in the head section of the thermal head 1, and always maintains a minute gap, for example, 0.2 mtn, with the surface of the covering film 2. It is designed so that you can move around while doing so.

In fact, according to the performance test of the example, the gap between the surface of the film 2 and the recording surface must be between 0.1 and 0.3# in order to maintain a resolution of 8 lines/line. confirmed.

However, the gap is set to 0. If the ink 4 penetrates into the recording paper 8, this part expands and the recording surface contacts the surface of the film 2, causing the recording surface to absorb the ink 4.
It was also confirmed that there is a risk of contamination. Therefore, in this embodiment, the recording section guide 31 is attached to the recording section guide fixing reference protrusion 135 (see FIG. 6) of the thermal head 1.
Press the arm part of the
It is strictly managed to ensure that the

As the leading edge of the recording paper 8 moves further forward, the ejection means 143
That is, the sheet is held and conveyed between the 20th roller 14 of the suction conveyance mechanism section 43a and the 11M roller 13 as a discharge roller. At this time, the recording surface of the recording paper 8 is
It is supported in a dotted manner by a sword-shaped roller section 104, and at both ends, reference roller sections 105 and 106 are in contact with the suction conveyance bells 1 to 15, which are opposing conveyance members, so that excessive pressure may be applied. Since the paper is conveyed without drying, the undried recorded image is not disturbed. (See FIG. 7) Furthermore, the recording paper 8 moves forward, and its rear end passes through the rolling contact portions of the registration rollers 11 and the tenth roller 12. At this time, the rear end portion of the recording sheet 8 receives the full load of the recording material conveyance mechanism 43 and is conveyed while being rubbed against the recording section guide 31. In other words, the basic conveyance force of the recording paper 8 is only the suction conveyance force of the suction belt 15, and since the recording paper 8 is conveyed while being subjected to 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 Pell 1 to the pressing/returning means 43b, and the belt guide plate 27 as the second floating section is transferred to the belt guide plate 27. Due to the reaction force from the recording unit guide 31, the high viscosity fluid passes through the two high viscosity fluid buffers while resisting the belt guide plate pressing spring 26, and is moved upward relative to the housing portion of the suction conveyance mechanism unit 43a as the first floating unit. 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 The recording paper 8 can be conveyed smoothly with only the total load and the biasing force of the belt guide plate pressing spring 26.

Further, the recording paper 8 moves forward, and when the rear end of the recording paper 8 passes the edge portion of the recording unit guide 38 on the thermal head 1 side, the belt guide plate 27 receives no reaction force from anywhere.
Total load on belt guide plate 27 and belt guide plate pressing spring 26
It will be pushed down by the force of.

Therefore, as soon as the trailing edge of the recording paper 8 passes the edge portion of the recording section guide 31, the surface of the film 2 and the recording surface of the recording paper 8 come into contact, and the trailing edge of the recording paper 8 is covered with the ink 4. It has the problem of getting dirty.

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 passes through the edge part of the recording unit guide 31. Even if it moves downward, it will slowly descend due to the buffering effect of the high viscosity fluid buffer 29. Therefore, recording paper 8
The trailing edge of the recording paper 8 can be made to pass through the heating element 3 while the recording surface of the recording paper 8 approaches the surface of the film 2.

Further, in this embodiment, the leading edge or trailing edge of the recording paper 8 is folded or bent, and in order to prevent the recording paper 8 from coming into contact with the surface of the film 2, the leading edge or trailing edge of the recording paper 8 is heated. ±6 mm at each end across element 3...
During this time, the electromagnetic coil 28 is excited so that the belt guide plate 2 as a second floating part moves away from the surface of the film 2.
7 as a whole is sucked upward.

In this way, the recording paper 8 does not come into contact with the film 2 and get dirty, and also maintains an extremely small gap between the recording paper 8 and the film 2.
After passing through the arrangement section 13, the paper is discharged onto the paper discharge tray 16 with a clean record still formed.

Also, when the paper is ejected, the trailing edge of the recording paper 8 is at the 21st E.
The tip of D23 is blocked and the rising signal of the second photosensor 24 is detected to detect that the recording paper 8 has been reliably ejected.

Next, referring to FIGS. 2 and 3, the ink container 64
The supply of ink to the film cartridge 40 as a recording medium cartridge and the supply of ink from the ink supply section of the film cartridge 40 to the film 2 will be described.

The film cartridge 40 and the ink container 64 are separable. The ink 4 is housed in an ink container 64, and this ink container 64 is connected 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, which is in close contact with the ink container seal 73, against the biasing force of the cartridge valve spring 69.

On the other hand, the valve 68 of the film cartridge 40 pushes up the ink container opening/closing rod 70, and therefore pushes up the valve 67 of the ink container 64 against the valve spring 66, causing the ink 4 in the ink container 64 to 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. Fine ink supply channels 72 and 93 formed at the bottom of the container portion 77 of the film cartridge 40 via the 94 (see FIG. 6)
flows into.

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 film 2, thus filling the small holes 2 of the film 2.
The ink 4 is filled in the ink 4, and is used as recording ink droplets 6 by the movement of the film 2 and the rapid heating of the heating elements 3, which create bubbles in the ink 4.

In this way, when the ink 4 is consumed and the level of the ink 4 falls below the diagonally cut portion at the tip of the transparent ink supply tube 71, air is sucked in from the air suction passage 74 provided in the ink supply section of the film cartridge 40. ,
This air flows into the ink container 64 through the diagonally cut portion of the transparent ink supply tube 71, causing new ink 4 to flow out.

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, air can enter and exit the ink supply section only when the small holes 2a of the film 2 pass through the first and second surplus ink scraping members '11.90, 42.89. Therefore, replenishment of the ink 4 from the ink container 64 to the ink supply section is possible only when the film 2 is being moved, and is not performed when the film cartridge 40 is not in operation, such as when being replaced or being moved. There is no such thing.

Therefore, the problem of ink 4 being excessively supplied to the film cartridge 40 and leaking from the film cartridge 40 and scattering can be prevented.

Furthermore, since the ink 4 is supplied to the film 2 through an ink supply member 37, 79 made of felt as shown in FIGS. 2 and 3, the free surface as a liquid within the ink supply is Since the ink 4 is captured between In#i by the force of surface tension, leakage of the ink 4 to the outside of the film cartridge 40 can be easily prevented.

Next, insert the ink container 64 into the film car 1 to the cartridge 40.
The operation of attaching the ink container and removing it from the section 65 will be described below.

When the ink 4 in the ink container 64 is consumed by the above-described replenishment of the ink 4, the level of the ink 4 further decreases and reaches 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.

Based on the ink-out detection signal, the device displays a message on the display portion of the device or the display portion of the image/data processing device 133 connected to the device, if the thermal head 1 is detected as described below. If there is ink 4 in the ink container 64, 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 valves 68 of the film cars 1 to 40 is completely opposite to that in the case of installation.

That is, the valves 68 of the film car 1 to the ridge 40 are raised, and the ink container mounting portion is brought into close contact with the lower surface of the seal 73 by the force of the cartridge valve spring 69, and the ink 4 in the film cartridge 40 is moved to the ink container mounting portion 65. This prevents the liquid from leaking and scattering to the outside.

By the way, the ink container 64 has a capacity of 100c in this embodiment.
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 A4 sheet recording paper.
On the other hand, film cars 1 to 40 recorded approximately 100,000 sheets/A4 for a period of approximately 3 days due to problems such as paper dust, force, and clogging due to dry ink in the small holes 2a of film 2. It will need to be replaced every year. For this reason, the film cartridge 40 and the ink container 64 are separable, and the structure is such that leakage and evaporation of the ink 4 in each container can be easily prevented.

The attachment of the film cartridge 40 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 a container located in the film exposed portion 86 of the cartridge 40 shown in FIG.

That is, in FIG. 3, when the film cartridge first support part 60 is inserted into 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 moved to the right. , the head of the fixing spring 62 falls into the recess of the film cartridge second support portion 61, and the film cartridge 4o is fixed.

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

In addition, since the above-mentioned J: vertical mounting (p) makes it easy to attach the film cartridge 40, it is also easy to attach and detach the film cartridge 40 even with the ink container 64 attached.In other words, the color of the ink 4 can be changed. When the film cartridge 40 is attached or removed, the recording member 43 rotates as shown by the arrow in FIG. rotates, and the upper part of the film car 1-ridge 40 is opened wide, making it easy to remove paper jams in the recording section, paper waste from the film 2, and replace the film cartridge 710.

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 is attached to the first surplus ink scraping portion If4 of the film cartridge 40.
L90 and the second surplus ink scraping member 42.8 to tightly seal the film cartridge 7io.

In addition, the ink absorbing members 34 and 35 shown in FIG. 2 allow the excess ink 4 accumulated in the upper part of the thermal head 1 when the film cartridge 4o is attached and detached to flow down through the wall surface of the thermal head 1 and into the ink cartridge. However, in this embodiment, the thermal head 1
An ink absorbing member 34, 35 that is in contact with the thermal head 1 is attached to the lower part of the ink absorbing member 34, 35, which absorbs the ink 4 that is about to run down and scatter, thereby preventing the above-mentioned problem.

Now, let's talk about the operation when driving film 2)! 1 bell.

FIG. 4(a) is a side view of a drive section of a film moving mechanism serving as a recording medium moving mechanism, and FIG. 4(b) is 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. ), move upward and downward, respectively.

When the film drive motor gear 58 rotates clockwise, the film drive gear 78 rotates clockwise as viewed from the side of FIG. 4(a).

Drive shaft 8 for moving the film as a drive shaft for moving the recording medium
Since one end of the left-handed spring 84 fitted to the drive shaft 87 is engaged with the recess of the gear 78, clockwise rotation of the gear 78 is a direction in which the left-handed spring 84 is further wound around the film moving drive shaft 87. The power of the gear 78 is transmitted to the film moving drive shaft 87.

At this time, the film drive gear 59 as a recording medium drive gear sometimes rotates in one direction, but the right-handed spring 83 fitted on the film movement drive @ 88 as a drive shaft for movement of the recording medium is relatively rotated. It acts in the direction of loosening the drive shaft 88. However, in the case of the embodiment, since the drive shaft 88 and the Ishinomaki spring 83 rotate in the same direction, the drive shaft 88 and the right-handed spring 83 actually rotate.
A slip with 3 will occur.

By the way, when attaching and detaching the film cartridge 40, the film drive gear 59.78 is connected to the mori gear 5.
8, there is a risk that the interlocking film 2 will remain loose or remain under too much tension. 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 in FIG. 6, the film cartridge 40 is provided with a film tension 11411i142 as a recording medium tension mechanism on the side opposite to the film moving drive shaft 87,88. Therefore, there is no loosening of the film 2, and the film 2 is at the appropriate pressure.You can do this while rubbing the tip heating element 3 of the multihead 1. A ladder wheel 100 is fixed to one end of the film moving drive shaft 87 by a bin 101, and to one end of the drive shaft 88 is an outer-wound 1--john whose one end is engaged with a 1--john spring fixing portion 96. The spring 95 is fitted, and the torsion spring 95
The other end engages with four parts 98 of a ladder wheel 97, and the ladder wheel 97 is connected to the ladder wheel 100 via nine ladder chains.

By the way, when the ladder chain 99 is hung on the ladder wheels 97, 100, the recording medium is wound around the shaft 36 via the torsion spring 95, and the film is wound around the shaft 36 in the counterclockwise direction. The winding can be accomplished by suitably twisting the torsion spring 95 in advance so that the shaft 38 is biased clockwise. Therefore, an appropriate tension can be applied to the film 2 according to the torsional force, that is, the torque, of the torsion spring 95.

In this way, when the film cartridge 40 is attached to the apparatus, the problem of the film 2 coming loose is eliminated, and the film 2 always slides in close contact with the tip of the thermal head 1 with appropriate pressure.

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

At this time, the drive gear 59 rotates counterclockwise, and the Ishinomaki spring 83 acts to become entangled with the film drive shaft 88. Thus, in this case, the film 2 is directed downwardly, and thus the clockwise direction of the film drive motor 52,
The film 2 can be moved back and forth according to the counterclockwise rotation, and the right-hand spring 83 and the left-hand spring 8
4 and the film tension mechanism 142 prevent the film 2 from loosening when the film cartridge 40 is attached or removed, and prevent damage to the film 2 or the thermal head 1 due to excessive tension.

In any case, by the operation of the film drive Tanabata 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. 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. Film first position detection slit 81 as recording medium first position detection slit 1 to
A film second position detection slit 82 is provided as a recording medium second position detection slit, and a film position detector 79 detects the position of the film 2.

When the film drive motor 52 rotates, the film position detector 79 senses short light pulses and light emitting pulses from the slits similar to the slit 81 and the long slits, and in response, the film position detector 79 detects short light pulses and light emission pulses from the slits 81 and long slits. It is determined at the rear end of the long slit in the clockwise direction that the slit 81 is a slit for detecting the first position of the film, and the single optical pulse of the slit 82 is used for detecting the film position. Detector 79 detects this and determines that this is the slit for detecting the second position of the film. 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)
The exposed film portion 86 of the film cartridge 40 is covered, and the multi-hole portion 92 covers the film exposed portion 86 of the film cartridge 40.
, is housed in the ink supply section below the second surplus ink scraping member 89,90. For this reason, the film car 1-ridge 40 is in a state of being sealed from the outside air since the non-porous portions 91 of the films 2 are held together.

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 ejects 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 processing device 133 (see FIG. 15) for processing character data, etc., the film 2 is held for a certain period of time, that is, before driving the first feed roller 9 to feed the recording sheet 8 to the recording section. The film drive motor 52 is moved by rotating it counterclockwise as shown by the arrow in FIG. The film 2 is moved in synchronization with the leading edge of the recording paper 8 while waiting for the arrival of the paper 8. At this time, the moving speed of the film 2 is 20 mm/sec, which is 1/2 of the moving speed AO mm/sec of the recording paper 8.

In fact, even when the speed of the recording paper 18 is varied between 10 and 100#/sec, the relative movement direction of the film 2 and the recording paper 8 is the same at the recording density of the recording paper 8, that is, at a coverage rate of 75%. , regardless of the reverse direction, if the moving speed of the film 2 is V/4 or more, the surface Dl is 0 (black solid, coverage rate 7).
5%) was found to be above J's.

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 area of the film 2 could be reduced, and the production of the film 2 could be made easier. That is, if the area of the multi-hole portion 92 is large, it is difficult to make the diameter of the small hole 2a (25 to 30 μm) uniform over the entire area, and therefore, the problem that the diameter of the small hole 2a becomes smaller near the periphery, for example, can be solved. This causes 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 be in the above-described 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 position detector 79 to detect the position of the similar slit among the long slit and short slit pair of the film M1 position detection slit 1-81. It is necessary to detect and stop it.

This embodiment is based on this assumption.

Now, the recording paper 8 is continuously fed and even numbered recording paper 1
8 is recorded, the first,
After the eight second surplus ink scraping members are inserted until the end on the 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 described above. It moves and waits for the terminal end to reach the heating element 3 for a certain period of time, and then records are recorded in synchronization with the leading edge of the recording paper 8.

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 such that the contact positions with the film 2 are staggered as shown in FIG. It is located above 90. The necessity of this arrangement will be explained with reference to the first and second surplus ink scraping members 41 and 42.

First, the film 2 must be wound so that the axes 36 and 38 reach the apex of the thermal head 1 and are directed downwards, so that the recording area can be stored compactly and the recording paper 8 must be placed in a tight gap to the heating element 3. It is impossible to keep them close and transport them.

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 , and the area of the film exposed portion 86 of the film cartridge 40 of the film 2 can be reduced.

Therefore, the film cars 1 to 4o can be formed compactly. 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 the first and second surplus ink scraping members 41, 42, the film 2 has only the small holes 2a... Not film 2
A sufficient amount of ink 4 is applied and replenished over the entire surface.

Therefore, as mentioned above, this makes it possible to reduce the film speed to 1/4 of the vermilion (of the recording paper 8).

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 recording side surface of the film 2 is first scraped off by the second surplus ink scraping member 42.

Therefore, the excess ink 4 adhering to the surface of the film 2 is scraped off, and the dust and paper dust 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, it is scraped off again by the first surplus ink scraping member 41 and accumulates at the tip of the first surplus ink scraping member 41 .

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

On the other hand, the non-perforated portion 91 of the film 2 moves in the F direction, that is, downwardly toward the first and second surplus ink scraping members 4.
The state when passing 1.42 will be described. At this time, the surface of the film 2 opposite to the thermal head 1 has already been cleaned by the second surplus ink scraping member 89, so the second
There is no need to scrape off ink using the surplus ink scraping member 42.

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 members 4, 1'.

In this way, the non-perforated portion 91 of the film 2 becomes the film exposed portion 8 as the recording medium exposed portion of the film cartridge 40.
When the film cartridge 4o is covered, the exposed portion of the film 2 is thoroughly cleaned, and there is no risk of soiling hands when putting on the film cartridge 4o.

In addition, since the lengths M and N (see FIG. 12) of the non-hole portion 91 in the moving direction are longer than the film exposure width F (see FIG. 6) of the film car 1 to the cartridge 40, etc., the first surplus ink Air can be prevented from entering and exiting through the gap between the scraping member 41.90 and the second excess ink scraping member 42.8.

Therefore, the evaporation of the ink 4 can be prevented, and the viscosity of the ink 4 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.
Move the heating element 3 back and forth several times, and at the same time start the suction fan 53 shown in FIG.
Paper scraps and dust on the film 2 described above are sucked into the air suction guide 57 through the suction port 107 .

In this way, the paper dust and dirt attached to the film 2 can be removed, so that the multi-hole portion 9 of the film 2 can be removed.
This makes it possible to prevent the small holes 2a of No. 2 from becoming clogged with paper powder and dirt.

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

In addition, as described above, since the paper waste removal process is performed on the non-porous portion 91 of the film 2, the ink 4 on the film surface is cleaned, so that the ink 4, etc. is sucked into the air suction guide 57. It is also possible to prevent problems such as the ink 4 being stuck to the suction belt 15.

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

After a 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 during recording.

This is done in order to prevent the ink 4 from being depleted from the heating elements 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 exposed film portion 86 of the film cartridge 40 is covered with the non-perforated portion 91 of the film 2.

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 located 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 is transferred to the small holes 2 in the multi-hole portion 92 of the film 2.
a... so that it can be collected into the ink supply section of the film cartridge 40. Said first and second
Excess ink scraping member 41, '90, and 42.89
is made of a non-breathable material that prevents air and ink 4 from entering and exiting 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 2a 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, 1" and 2 are the dimensions of the heating element 3, which are 100 μm to 125 μm, respectively.

The diameter of the small hole 2a in the figure is 25 μm in the example.
The distance P between the centers of a is 45 μm, and the minimum distance between the small holes 2a is 20 μm. According to experiments, using the above symbols and assuming that the maximum distance between adjacent small holes 28 is P, the relational expressions H≧2P and V≧2P+D are satisfied;
When the resolution is 8 lines/# as in the example, the diameter of the small hole 2a is D=15 to 35/1 m1P is P=40 to 50 μm
J: In order to obtain good print quality, it was necessary to

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 n20+. 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 hole 2a filled with ink 4 is rapidly ejected and recorded. The recording ink is ejected by applying a pulse with a pulse width of 10 μsec to perform recording. At this time, the energy consumed is approximately 2100 erg/element.

This energy is distributed between 1tii of heating element and film 2
The thickness of 24 is almost constant when it is 3 μm or more, but
When (2) exceeds 10 μm, the jetting force becomes poor and the printing quality deteriorates. In addition, when T is 3 μm or less, the energy consumption of ink per heating element 3 becomes 210 (1 or more), and it was found that the smaller the diameter, the more energy is required. Therefore, in this example, T='
It was set to 3 μm. 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. 59-11851, the heating element (heating resistor) is mainly composed of ruthenium oxide, M (M is Ca).

A metal oxide thin film containing a small amount (of one type) of oxide selected from Sr, Ba, Pb, B + , and Tg in an M/Ru (atomic ratio) of 0.6 to 2 is used.

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. Further, since this metal oxide thin film has a relatively high sheet 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, it is possible to reduce so-called print blur that occurs during printing. 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.

The structure of the heating element 3 was described in FIG. 14, but in this embodiment, the heating element 3 and the electrical conductor 108, 121 are formed on a polyimide film 123 of about 15 μm, which is made of metal made of aluminum. Support body 137
It has a structure that is fixed with adhesive. It is estimated from the calculation of the consumed energy distribution that the majority (70% or more) of the energy consumed by the pulsed heating of the heating element 3 is not used for ejecting the ink 4, but is used for ejecting the polyimide film 123 or the film. etc. are accumulated. Note that 119 is a driver for the thermal head 1, and 12 is a driver for the thermal head 1.
0 is a protective cover.

In this way, if the A4 vertical feed line printer has a resolution of 8 lines/mm and a recording speed of 40 s/V as in the embodiment, the thermal head 1 can be used for high-coverage recording such as graphic recording. The maximum value of the total energy consumption is about 120 W, of which about 107 W is accumulated in the polyimide film 123 and the film.

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

Thus, in this embodiment, the heating element 3 is placed on the polyimide film 123 having a thickness of about 15 μm and the electrical conductor 1.08.
21 and is bonded to the metal support 137 made of aluminum, the heat energy generated and accumulated in the heating cord 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 3. thus,
The heating cycle of the heating element 3 (=45-) 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)<b). In this embodiment, there are exposed conductor parts 110 and 111 of the ink presence/absence detection element, which have electrical conductors abutted against each other at both ends of the thermal head 1.
0,111 is direct ink 4 without abrasion resistant/insulating film 136
It is designed to come into contact with.

Incidentally, the conductivity of ink is 10'3 S/cm, and a small amount of current can flow if a voltage is applied. This state is shown in FIG. 10(a). the exposed conductor portion 110,
If 0N-OFFL voltage pulse is sent to 111 by switch SW, if ink 4
is at the top of thermal head 1, switch SW is set to O.
When the voltage at point Q becomes N, the voltage at point Q is
Since a current flows between 11 and 11, the current decreases temporarily. This signal is amplified to detect the presence of ink. As shown in FIG. 10(b), when there is no ink 4, no current flows even if the switch SW is operated as described above.
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 detection elements 109 and 112 are further attached to both ends of the row of heating elements 3 . . . of the thermal head 1, so that the heating elements 3 . It is possible to eliminate the problem of damaging the heating element 3 by heating and dry cooking.

In other words, 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 can be detected by ANDing the signals of the ink presence detection elements 109 and 112. Therefore, 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 provided with replenishment ink presence/absence detection means consisting of an ink detection IED 75 and an ink detection photosensor 76. That's what happened.

As described above, these ink presence/absence detection means each have their own roles, and at the same time, as described below, they cause the recording apparatus of this embodiment to perform various operations depending on the combination of their respective states. 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, it is possible to start the recording operation, for example, after feeding the recording paper 8, to stop the recording operation during recording, and after a while, ink 4 reaches the thermal head 1. Furthermore, when restarting the recording operation, 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 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 ink reaches the inside of the film cartridge 4o by restarting the ink presence/absence detection operation. 4 is missing, it can also detect if a new film cartridge 4o is missing.
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 multi-head 1 described above, the ink presence/absence detection signal, the replenishment ink presence/absence detection signal of the ink container 64, and the operation of the recording apparatus are closely related. In fact, in this embodiment, the recording material, that is, the recording paper 8, is fed toward the heating element 3 only when the detection signal of the presence of ink in the thermal head 1 and the detection signal of the presence of ink in the ink container 64 are generated at the same time. I try to do that. 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 film drive motor 52, the 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 movement speed is 20# during normal recording.
Although it is moved at a speed of lll1/V, it is operated at a slower speed, 5 m/V in the example. By this, when there is no ink 4, the thermal head 1
By rubbing the film 2, the electric conductor 108.121
This prevents the wear-resistant insulating film 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
A "waiting" 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, and the ink container 64 is replaced with new ink 4 during operation. In this way, a new ink container 6
4 is attached, and the detection signal indicating that there is no refill ink in the ink container 64 changes to the detection signal indicating that there is ink, the recording operation is interrupted for a certain period of time. It also prohibits the transfer of

This ensures that sufficient ink 4 permeates the ink supply members 37 and 39 in the film car 1 to the carriage 40, and that the ink 4 is always supplied to the film 2 in the same state.

In addition, in this embodiment, the film cartridge 40 is set in the recording apparatus by the means for detecting that the detection signal indicating that there is no ink in the thermal head 1 and the detection signal that there is no replenishing ink in the ink container 64 are generated at the same time. It is detected that it is not. This pattern is shown in FIG.

In fact, in the above-mentioned state, there is a case where film car 1 to ridge 40 are not set, and a case where film car 1 to ridge 40 are not set.
Even if the ink cartridge 1 is filled, it indicates that there is no ink 4 in either the thermal head 1 or the ink container 64. However, in both cases, the operator is instructed to replenish the ink in a major sense. It is.

As a result, even if there is no means for detecting whether or not the film cartridge 40 is set in the recording apparatus, it is possible to detect whether there is no ink in the thermal head 1 or not in the container 6.
No.4 refill ink occurs. In most cases, this means that the film cartridge 40 is not actually set. 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 overall structure of the thermal head 1 will be described 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, and the surface of the metal cooling members 114 and 115 is wetted. 53 once has a sensing element 117.118. 113 in the figure.
116 is a heating element of the thermal head 1, which is a heating element 3;
is placed parallel to and near it.

In this embodiment, the heating elements 113 and 116 of the thermal head 1 are turned ON or OFF by the output signals of the temperature detection elements 117 and 118 in response to changes in the environment and the thermal layer history of the heating element 3. is controlled to maintain a constant temperature.

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 detection element, and the temperature in the vicinity of the heating element 3 of the thermal head 1 can be controlled to be always 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 area is preheated prior to recording, so that the energy supplied by the voltage pulse applied to the heating element 3 is reduced.

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

As explained above, according to the above embodiment, when the recording paper 8 as a recording member is ejected, the recording portion is supported in a dotted manner by the nail-shaped roller portion 104, so that the recording portion is still dry. In addition, reference roller parts 105 and 106 are provided at both ends of the needle roller part 104 and roll into contact with the suction conveyance belt 15, which is an opposing conveyance member. Takara recording paper 8
Do not press it too hard and damage it.

In addition, in the above-mentioned description of one embodiment, the explanation was given for a film in which small holes were provided as a recording medium, but the present invention is not limited to this, and the same purpose can be achieved even if there are four parts. Of course.

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 explained above, in the present invention, a recording medium having a large number of small holes or four parts is filled with recording ink, and a heating element is selected when the small holes or recesses filled with ink reach the surface of the heating element. 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 recording material. The ejecting means includes a needle-like roller section that rotates and supports the recording portion of the recording material in a dotted manner, and a counter-conveying section that is located at both ends of the needle-like roller section. This apparatus has a discharge roller including a reference roller part that rolls into contact with the member, and the recording surface of the recording member is supported in a dotted manner and is discharged.

Therefore, it is possible to provide a recording device that is free from clogging, capable of high-speed recording, and does not damage the recorded portion during ejection.

[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 longitudinal side view, Fig. 3 is a schematic longitudinal front view, Fig. 4 (a> is a side view of the drive section of the film moving mechanism, and Fig. 4 (b> is a plane view of the drive section of the film moving mechanism). 5 is a perspective view of the film car 1 cartridge, FIG. 6 is a perspective view of the film moving mechanism and ink supply section, FIG. 7 is a perspective view of the paper ejection roller section, and FIG. 8 is a perspective view of the small hole diameter and FIG. 9 is a perspective view showing the ink presence/absence detection means of the thermal head, and FIG. 10 is a diagram showing the relationship between pitch and heating element shape.
10(b) is an explanatory diagram of the operation of the ink presence/absence detection means when there is no ink, FIG. 11 is a sectional view of the thermal head, and FIG. 12 13 is an explanatory diagram of the shape of the multi-hole and non-hole portions of the film, and FIG. 13 is a diagram showing the relationship between film speed and recording density.
FIG. 4 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...S-maru head, 2...Recording medium (film), 2a...Small hole, 3...Heating element, 4...Recording ink, 5...Small filled with ink Hole, 6...
Ejected ink droplets, 7... Small holes from which ink droplets were ejected, 8... Recorded material (recording paper), 13... Ejection roller (paper ejection roller), 15... Opposing conveyance member (Adsorption conveyance belt), 43...Recorded material conveyance mechanism, 43a...
・First floating part (adsorption conveyance mechanism part), 43b...Bell]
- Pressing/retreating means, 104... Needle roller portion of paper ejection roller, 105.106... Reference roller portion of paper ejection roller, 143... Ejection means. Applicant's representative Patent attorney Takehiko Suzue Figure 9 (a) (b) No. 10 rff1 M7 IV k meeting

Claims (2)

[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. After recording on the recording material by ejecting the ink in the small holes or recesses toward the recording material due to the pressure of the generated bubbles, the recorded material is discharged through a discharge means. In the recording device, the ejecting means includes a needle-like roller portion that rotates and supports the recording portion of the recording material in a dotted manner, and an opposing conveyance member located at both ends of the needle-like roller portion. 1. A recording device comprising a paper ejecting roller consisting of a reference roller portion that rolls into contact with a reference roller portion. (2) The recording apparatus according to claim 1, wherein the opposing conveyance member comprises a suction conveyance belt.