JPH04201469A - Apparatus for feeding material to be recorded and recording apparatus having the same - Google Patents

Abstract

PURPOSE:To bring a material to be recorded into contact with the surface of a belt and to easily separate the same from the belt by providing an inside layer composed of a conductive material and an outer surface layer composed of an insulating material to an endless belt and forming a circumferencial groove to the roller coming into contact with said belt in the axial direction of said roller and forming the projection engaged with the circumferencial groove to prescribe the lateral position of the endless belt to the endless belt in the lateral direction thereof. CONSTITUTION:An endless belt 61 has an insulating layer 71 composed of an insulating material forming the surface of the belt and a conductive layer 72 composed of a conductive rubber material forming the rear thereof. Ribs 73 are integrally formed to the rear of the endless belt 61 over the entire periphery thereof at the predetermined positions in the lateral direction thereof. The ribs 73 are formed of projections arranged at a predetermined pitch. Circumferencial groove 74, 75 for the engagement with the ribs 73 are formed to feed rollers 60, 63, 64, 65 at lateral positions corresponding to the ribs 73 of the endless belt 61. These circumferencial grooves 74, 75 has the shape corresponding to that of the ribs and prescribe the lateral position of the endless belt 61.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a recording material conveying device used in a recording device that records on a recording material based on an image signal, and a recording medium having the conveying device. Regarding equipment.

[Traditional technique]

Recording devices used as output devices such as printers, copiers, and facsimiles, as well as their composite devices and work stage machines, generate energy by driving the energy generating means of the recording pad based on image signals. ,
It is configured to record an image consisting of a dot pattern on a sheet-shaped recording material such as paper or a thin plastic plate.

The recording device may be an inkjet type,
It can be classified into wire dot type, thermal type, laser beam type, etc.

Such a recording apparatus includes a conveying device for conveying a recording material through a recording section that faces a recording head.

Particularly, in a recording apparatus that uses a cut sheet as a recording material, it is necessary to transport the recording material from a paper feed section such as a cassette to a paper discharge section via a recording section.

As one of such recording material conveyance devices, a system is used in which the recording material is conveyed by suction or adsorption onto an endless belt.

This type of conveyance device is used, for example, in an inkjet recording device.

Conventional conveying devices that use this type of endless belt mainly use a suction method, which draws air from the back side of the belt and uses the negative pressure to bring the recording material into close contact with the belt. Ta.

In addition, in such a belt conveyance system, the conveyor belt is always skewed or meandering. However, in conventional conveying devices, a flange is provided on the roller that drives the belt to sandwich the belt, and the position is controlled by the edge of the belt (flange method), or by attaching a crown to the roller. Methods such as a method in which the belt self-maintains its position by generating internal stress (crown method), or a method in which the belt shift is changed by changing the position of the rollers (servo method) have been adopted.

Furthermore, the portion of the conveyor belt facing the recording head must maintain a certain degree of flatness and be held in a fixed position in order to maintain the distance from the recording head, so it may not come into contact with the back surface of the conveyor belt. A platen for maintaining flatness was provided. [Technical Problems to be Solved by the Invention] However, the above-mentioned conventional recording material conveying device had the following technical problems.

First, in the suction method using air, it is necessary to form holes in the conveyor belt itself, and the belt suction force does not act on the entire surface of the recording material, resulting in a decrease in adhesion.

Also, if you increase the negative pressure to increase the suction power,
There was a problem in that the conveyor belt itself stuck to the member on the back side.

In particular, poor adhesion tends to cause a serious problem in that the recording material cannot pass through the gap between the head and the belt in the recording section.

An electrostatic adsorption method using an insulated resin belt is also used in order to apply adhesion force to the entire back surface of the recording material, but because the potential decay on the belt surface is slow, it is difficult to separate the recording material. A static eliminator is required, and since the belt cannot be made thick due to its structure, the belt itself has insufficient rigidity, which is inconvenient in terms of handling and practical use.

In order to prevent the belt from shifting, the flange method requires rigidity at the end of the belt; if the belt is thin, cracks or folds may occur, and if the belt is soft, the flange may ride on the belt.

Furthermore, in the crown method, a speed difference occurs due to the difference in belt circumference between the center and both ends of the belt, and distortion of the recording material occurs when the recording material is conveyed by suctioning the entire surface.

When this distortion occurs in the recording section, a portion of the recording material locally lifts off the belt surface and comes into contact with the recording head or causes a paper jam.

In addition, the servo system requires a means for detecting belt misalignment and a correction mechanism that operates based on the misalignment detection signal, making the recording apparatus large and complicated.

Furthermore, depending on the speed of deviation due to correction, the recording position of the recording head may shift, and in the case of color printing, color shift or unevenness may occur.

The above-mentioned insulating resin belt is more susceptible to deformation and tearing than the flange method, and has almost no elasticity, so the crown method cannot be used.

Furthermore, in order to maintain the distance between the recording head and the conveyor belt, there was a technical problem in that the drive torque increased due to friction with the member that came into contact with the inner circumference of the belt, increasing the load on the motor and increasing uneven rotation. .

Especially in a color recording apparatus, this becomes a cause of color shift and color unevenness as described above.

The present invention has been made in view of the above-mentioned conventional technical problems, and it is possible to bring the recording material into close contact with the belt surface and remove the recording material from the belt without using a static eliminator or the like. It is an object of the present invention to provide a recording material conveyance device that can be quickly and easily separated and that can solve the problem of recording deviation due to deviation of the belt or uneven movement speed, and a recording apparatus having the conveyance device.

[ff! Means for solving problems]

The present invention provides a conveyance device for a recorded material comprising an endless belt wound around at least two conveyance rollers, wherein the endless belt has an inner layer made of a conductive material and an outer layer made of an insulating material;・A circumferential groove is formed at a predetermined position in the axial direction of a roller or roller that contacts the dress belt, and a circumferential groove is formed at a predetermined position in the width direction of the endless belt by engaging with the circumferential groove to adjust the width direction position of the endless belt. By having a configuration in which the regulating protrusions are integrally formed, the recording material can be brought into close contact with the belt surface, and the recording material can be quickly and easily separated from the belt without using a static eliminator or the like. It is an object of the present invention to provide a recording material conveying device that can solve the problem of recording deviation due to deviation of the belt and unevenness of movement speed.

Another aspect of the present invention provides a recording apparatus that records on a recording material based on an image signal, including a recording head that forms an image on the recording material, a head mounting section for mounting the recording head, and a head mounting section for mounting the recording head. a conveyance device for a recorded material that conveys the recorded material to a recording position of the recording/rad installed in the unit;
In the conveying device, the endless belt has an inner layer made of a conductive IT material and an outer layer made of an insulating material, and a circumferential groove is formed at a predetermined axial position of a roller or a roller in contact with the endless belt. At the same time, a protrusion is integrally formed at a predetermined position in the width direction of the endless belt to engage with the circumferential groove and regulate the position of the endless belt in the width direction. It can be brought into close contact with the belt surface, and the recording material can be quickly and easily separated from the belt without using a static eliminator, etc., and it can also solve the problem of recording misalignment due to belt deviation or uneven movement speed. The present invention provides a recording device.

〔Example〕

Hereinafter, the present invention will be specifically described with reference to the drawings.

FIG. 5 is a longitudinal sectional view showing a recording apparatus suitable for carrying out the present invention, and FIG. 6 is a side view showing the recording section and recording material conveyance device in FIG. 1.

In FIGS. 5 and 6, 10 reads the original;
This is a scanner that converts it into an electrical signal, and the signal from the scanner iIQ is sent to the recording pad 3 of the recording section 20.
0 as a drive signal.

A recording material 50 such as paper or a thin plastic plate is stored in the paper feed fi 40, and is sent out one by one toward a belt conveyance device (recorded material conveyance device) 60 when necessary.

At this time, the recording head 30 is moving from the standby position shown by the two-dot chain line to the recording position.

The recording material 50 is supplied onto an endless belt (transport belt) 61 through a drive roller and a guide, and is recorded while passing through a gap between the recording head 30 and the endless belt 61. The paper is sent out onto the tray 21 via 70.

This embodiment shows the case of a color inkjet recording apparatus, and the recording head 30 is equipped with four head units 31A, 31B, and 31C131D corresponding to the ink colors of cyan, magenta, yellow, and black. An image is recorded on the recording material 50 by ejecting ink from each head unit based on the signal.

The head units IA, IB, IC, and ID are inkjet heads that eject ink using thermal energy, and are equipped with electrothermal converters for generating thermal energy.

Furthermore, the head units IA, IB, and IC11D are
Recording is performed by ejecting ink from an ejection port by the growth of bubbles due to film boiling caused by thermal energy applied by the electrothermal converter.

Reference numeral 80 in FIG. 5 denotes a recovery cap section, which has the function of maintaining the recording head 30 in a recordable state at all times.

Since the recording head 30 has a length that covers the width of the recording material 500, the recording material 50 is
An image can be recorded on the entire surface by simply passing under 0, and therefore high-speed recording is possible.

Furthermore, since the recording head 30 does not move during recording, stable recording can be performed.

The conveyance device 60 is provided with means for bringing the recording material 50 into close contact with the endless belt 61.

In FIG. 6, the registration roller pair 41 (FIG. 5) is
The recorded material 50 reaches an endless belt (transport belt) 61 along the guide plate 42 .

At this time, the conveyance speed of the registration roller pair 41 is set faster than the conveyance speed of the endless belt 61 so that the recording material 50 does not shift on the endless belt 61.

The endless belt 61 is formed of an insulating layer on the recording material side (front side) and a conductive layer on the opposite side (back side), and is composed of at least these two layers.

The insulating layer can be formed on the base conductive layer by a method such as spray coating.

Further, in order to suppress errors in thickness and improve the surface quality, the surface of the endless belt 610 may be labeled with a title.

The endless belt 61 is wound around a driving roller 62, a driven roller 63, and a tension roller 64, 65, and is attached with a tension of 2 to 5 kg.

The endless belt 61 is moved in the direction of the arrow \[m by a motor connected to a drive roller 62.

Note that the recording material 50 is placed on the endless belt 61 immediately in front of the flexible resin sheet 66.

At this time, the surface of the endless belt 61 is given a potential of several hundred to several thousand volts by the charger 67.

The recording material 50 placed on the endless belt 61 is
When it reaches the flexible resin sheet 66, it comes into close contact with the surface of the belt and an electrostatic adsorption force is generated, so that it moves integrally with the belt without any gaps.

In this state, the recording material 50 reaches the recording area (below the recording head 30).

The recording head 30 has the part on the head block 32.
It has a structure in which the modules IA, IB, and IC1ID are installed.

A belt guide core material (
Hereinafter referred to as a platen) 33 is arranged, and the platen 33
In this case, the endless belt 61 is pushed up toward the recording head 30, and the front surface and the back surface of the endless belt rub against each other.

Further, the head units IA and IB are provided on the side of the endless belt 61 on the upper surface of the platen.

Pins 34 for setting a gap between the IC1ID and the recording material 50 are provided in a predetermined arrangement.

Note that the surface of the platen 33 is covered with the endless belt 6.
In order to keep the distance between the recording head 1 and the recording head 30 constant, its flatness is suppressed to about several tens of micrometers in diameter.

On the other hand, the head units IA, IB, IC, and ID are each abutted against the head abutment surface 35 of the head block 32.

The outer side of the head abutment surface 35 is a pin abutment surface 36 against which the pin 34 abuts, and the parallelism of the pin abutment ff136 is determined by each head unit IA, IB, I.
C. Accuracy to the extent that recording differences due to ID do not appear (for example,
It is maintained at a diameter of several tens of microns.

In this way, each pin 34 and the head block 32 come into contact with each other, thereby forming a gap for holding the recording material 50.

When the recording material 50 is conveyed with the above configuration, the recording material is transferred to the endless belt (transport belt) 6 by electrostatic adsorption force.
1, and the distances from the head units IA, IB, and IC1ID are kept constant.

After recording, the recording material 50 reaches the drive roller 62 while remaining in close contact with the endless belt 61 , where it is separated from the endless belt 61 due to its curvature and is sent to the fixing section 70 .

Further, the endless belt 61 is cleaned of dirt caused by ink or the like by a cleaner 68.

FIG. 1 is a partial perspective view showing the main parts of the recording material conveyance device of this embodiment, and FIG. 2 is a side view seen from the direction of arrow X in FIG.

In FIGS. 1 and 2, the endless bell 61 is made of an insulating layer 71 made of an insulating material that forms the front surface (the surface on the recording material 50 side) and a conductive rubber material that forms the opposite back surface. It has a conductive layer 72 consisting of:

The insulating layer 71 desirably has a water-repellent surface in order to minimize staining caused by ink.

Since the conductive layer 72 is made of rubber and has elasticity, the insulating layer 7
It is also necessary for the insulating layer 71 to have elasticity, and it is desirable that the insulating layer 71 is also made of an elastic material having the same degree of elasticity as the conductive layer 72.

However, if the elasticity of the insulation 1710 is too low, slight elongation of the belt 61 occurs due to load fluctuations, and the recording material 50
Therefore, it is desirable to take this point into consideration when making decisions.

Ribs 73 are integrally formed on the back surface (conductive layer 72 side) of the endless belt 61 along the entire circumference at predetermined positions in the width direction.

In the illustrated example, the ribs 73 are formed as protrusions arranged at a predetermined pitch.

On the other hand, each conveyor roller 62, 63, 64, 65 (6th roller)
, a circumferential groove 74 for engaging the rib 73 at a position in the width direction corresponding to the rib 73 of the endless belt 61.
．． 75 (the circumferential grooves of the conveyance rollers 63 and 65 are not spotted) are formed.

These circumferential grooves 74 and 75 have shapes corresponding to the ribs 73, and define the widthwise position of the endless belt 61.
(positioning).

That is, the ribs 73 and the circumferential grooves 74 and 75 are means for determining the recording position of the recording material 5G attracted onto the endless belt 61 in the width direction (direction of arrow B).

For this reason, since the straightness of the side surface of the rib 73 affects the recording position deviation, precision in the straightness is required.

The straightness of the side surface of this rib 73 is, for example, a resolution of 300
In the case of a recording device of ~400 dpi, about 30 to 40 μl may be required.

Note that if the ribs 73 are later attached to the belt 61 by adhesive or the like, it is difficult to achieve such straightness.

Therefore, if the conductive M72 is made of a rubber-based material, the ribs 73 can be integrally molded at the same time, and the accuracy can be significantly improved compared to the method of attaching the ribs later by gluing or welding. Straightness such as can be easily ensured.

It is desirable that the resistance value of the insulation 11171 is 101'Ω·Ω or more (volume resistance value), and the resistance value of the conductive layer 72 is 10
The insulating layer 7 is preferably 1Ω·偲 (volume resistivity) or less.
The appropriate thickness of 1 is about 50 to 200 μi.

When applied to inkjet recording independently of the protrusion configuration, when an image is formed entirely or partially on a recording material with ink, a slight distribution occurs in the electrostatic adsorption state. At this time, if the recording material is forcibly separated from the belt due to the structure of the separation roller or claw, the recording material may be deformed at the separation portion, resulting in image disturbance or separation failure.

After studying such a case, it was found that it is preferable to have a configuration in which discharge occurs to some extent from the time after recording until the separation portion is reached.

So, after further consideration, we found that A4 size
When transporting about 30 sheets, stable separation is possible if the ratio of (insulating layer resistance to conductive layer resistance) is 10" or more, and curvature separation method (forced separation method type or without using rollers) is possible. It has been found that it is possible to separate even the images (which can be easily removed) and is effective for solid images, especially full-color images.

Of course, even better conveyance can be achieved by having the above-described protrusion configuration.

Further, it is particularly preferable for high-speed recording and full-color recording that the ratio (insulating layer resistance/conducting KN resistance) is 100 or more.

According to such a configuration, even if the insulating layer 71 is thin, the conductive layer 72 can be made thick, and the conveyor belt 61
The overall thickness can be reduced to several orders of magnitude, and the strength and handleability of the belt itself can be improved.

If the diameter of the driving row 562 is 1 m (approximately 1 m to 40 m), the total thickness of the lead tl 172 and the cutout 8871 is 0°4 to 2.0
Position x is desirable.

GuidetW! Front side of J72 (back side of endless belt 61)
Since the friction reduction treatment has been applied to the belt, the friction coefficient between the endless belt 61 and the platen 33 (FIG. 6) is reduced by 20 to 50% compared to the case where no treatment is applied.

3vli is a partial perspective view showing another embodiment of the recording material conveying device according to the present invention, and FIG. 4 is an arrow Y in FIG.
FIG.

In this embodiment, ribs 73 are formed on the surface of the insulating layer 71 of the endless belt 61, and rollers 78 having circumferential grooves 77 extend from the surface of the insulating layer 71 (the surface of the endless belt 610).
It is configured to restrict the movement of the endless belt 61 in the axial direction.

This embodiment differs from the embodiments shown in FIG. 1 and FIG. A detailed explanation will be omitted.

Also in this example, the rib 73 and the circle! f
f177 is formed at a predetermined position in the width direction of the endless belt 61, and has a shape and size that allows them to engage with each other without play.

In this embodiment, after the ribs 73 are integrally molded on the first M71, the conductive layer 72 is formed on the flat back surface by, for example, a coating method.

Although the straightness of the rib 73 decreases when the rib 73 is subjected to the above-mentioned coating method or the like, according to this embodiment, the insulating layer 7
A conductive wire is coated on the flat back side of 1 using the coating method described above.
2, the straightness reduction of the rib 73 rJg
The conductive It72 can be formed without causing any.

According to each of the embodiments described above, since the endless belt (transport belt) 61 has the structure of the insulating layer 71 and the conductive layer 7202M, the recording material 50 can be brought into close contact with the surface of the endless belt 610 that has been charged in advance. Furthermore, since the potential decays quickly after charging is stopped, the recording material 50 can be easily separated, and a static eliminator in a conventional conveying device can be omitted.

In addition, since the inner guide tilt 72 is made of a rubber-based material, it can apply tension by itself, and has sufficient stability, making it an easy-to-use recording material both in terms of handling and practical use. A transport device was obtained.

Furthermore, since the ribs 73 can be formed integrally with the endless belt 61 with high precision, a conveying device that can ensure the straightness of the ribs and prevent the endless belt 61 from meandering or shifting can be obtained.

Further, since the back surface of the endless belt 61 was subjected to a friction reduction treatment, the frictional resistance of the platen 33 was reduced, and unevenness in the moving speed of the endless belt 61 could be reduced.

Therefore, according to the recording material conveying device and the recording apparatus having the conveying device according to the present invention, it was possible to significantly reduce color shift and color unevenness, especially in the case of color recording.

In the above embodiments, the present invention will be described by taking as an example a case where the present invention is applied to a line-type inkjet recording apparatus using a line-type inkjet recording head 30 that covers an area H in the paper width direction of a recording material 500. However, the present invention can also be applied to recording apparatuses using other recording methods, such as a serial scan type inkjet recording apparatus that uses a serial scan type inkjet recording pad in which a recording head is mounted on a carriage. It is possible to achieve the following effects.

Further, the present invention can be applied regardless of the number of recording heads (head units).

The present invention brings about excellent effects particularly in an inkjet recording apparatus using an inkjet recording head of the bubble jet type proposed by Canon Co., Ltd. among inkjet recording types.

As for typical configurations and principles thereof, it is preferable to use the basic principles disclosed in, for example, US Pat. No. 4,723,129 and US Pat. No. 4,740,796.

This method can be applied to both the so-called on-demand type and the continuous type, but especially in the case of the on-demand type, the liquid (ink) is placed against the sheet or wave path holding the liquid (ink). At least one drive that corresponds to the recorded information and gives a rapid temperature rise exceeding nucleate boiling to the electrothermal transducer! ! By applying the I signal, the electrothermal transducer generates thermal energy to cause film boiling on the heat-active surface of the recording head, and as a result, bubbles in the liquid (ink) are removed in one-to-one correspondence with this drive signal. It is effective because it can be formed.

Due to the growth and contraction of these bubbles, liquid (
ink) to form at least -1 droplets.

If this drive signal is in the form of a pulse, bubble growth and contraction will occur immediately and appropriately, so liquids with particularly excellent responsiveness (
Ink) can be ejected, which is more preferable. As this pulse-shaped drive signal, those described in US Pat. No. 4,463,359 and US Pat. No. 4,345,26 are suitable.

Further, if the conditions described in US Pat. No. 4,313,124 concerning the temperature increase rate of the heat acting surface are adopted, even more excellent recording can be achieved.

The configuration of the recording pad includes a combination of a discharge port, a liquid path, and an electrothermal converter (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications. U.S. Pat. No. 4,558,333 and U.S. Pat. No. 4,459, which disclose a structure in which the action part is arranged in a bending area.
The structure using the specification of No. 0 is also included in the zero invention.

In addition, Japanese Patent Application Laid-open No. 123670 of 1982 discloses a configuration in which a common slit is used as a discharge part for a plurality of electrothermal converters, and a hole that absorbs pressure waves of thermal energy is disclosed. The present invention is also effective as a configuration based on Japanese Patent Application Laid-Open No. 138461 of 1981, which discloses a configuration in which a discharge portion corresponds to a discharge portion.

Furthermore, full-in type recording with a length corresponding to the maximum recording medium width that can be recorded by a recording device can be achieved by a combination of multiple recording heads as disclosed in the above-mentioned specification. Either a configuration that satisfies the length or a configuration as a single recording head formed integrally is suitable, and the present invention can more effectively exhibit the above-mentioned effects.

In addition, a replaceable chip-type recording head that is attached to the device body enables electrical connection with the device body and ink supply from the device body, or a chip-type recording head that is installed integrally with the recording head itself. 1. Using a cartridge type recording head. The present invention is also effective when =fS.

Further, it is preferable to add recovery means, preliminary auxiliary means, etc. for the recording head, which are provided as a configuration of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized.

Specifically, these include capping means, cleaning means, pressurizing or suction means, electrothermal transducers, or a combination of these and a heating element, or a combination thereof. It is also effective to use a heating means and a preliminary ejection mode in which ejection is performed separately from recording in order to perform stable recording.

Furthermore, the recording mode of the recording device is not limited to a recording mode in which only the mainstream color such as black is used; the recording head may be configured integrally or in combination with a plurality of recording heads; The present invention is also extremely effective for devices equipped with at least one full color image.

In the embodiments of the present invention described above, the ink is explained as a liquid, but it is an ink that solidifies at room temperature or lower, and is softened or liquid at room temperature, or in the above-mentioned inkjet, the ink itself is heated at a temperature of 30°C or higher and 70°C. It is common to adjust the temperature in a range of 0.degree. C. or less so that the viscosity of the ink is within a stable ejection range, so it is sufficient if the ink is in a liquid state when the recording signal is applied.

In addition, the temperature rise caused by thermal energy can be actively prevented by using it as energy to transform the ink from a solid state to a liquid state. By using
In any case, the ink may be liquefied by applying thermal energy in accordance with the recording signal and ejected as liquid ink, or the ink may already begin to solidify by the time it reaches the recording material. It is also applicable to the present invention to use an ink that liquefies only after it has been used.

In such a case, as in Japanese Patent Application Laid-open No. 54-56847, the ink is held as a liquid or solid in the recesses or through holes of the porous sheet and is placed facing the electrothermal transducer. It may be in any form.

In the present invention, the most effective method for the above-mentioned ink is the one that implements the above-mentioned film boiling method.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in the recording material conveyance device comprising an endless belt wound around at least two conveyance rollers, the endosys belt is insulated from the inner layer of a conductive material. A circumferential groove is formed at a predetermined position in the axial direction of the roller or roller in contact with the rainbow resistant belt, and a circumferential groove is formed at a predetermined position in the width direction of the endosys belt. Since the projections are integrally formed to engage and regulate the position of the endless belt in the width direction, the recording material can be brought into close contact with the belt surface, and the recording material can be kept in close contact with the belt surface without using a static eliminator or the like. Provided is a recorded material conveying device that can quickly and easily separate the material from the belt and can also solve the problem of recording deviations due to belt deviation and uneven movement speed.

According to another aspect of the present invention, there is provided a recording apparatus that records on a recording material based on an image signal, including a recording head that forms an image on the recording material, a head mounting section for mounting the recording head, and a recording head that forms an image on the recording material. The record t\ attached to the head attachment part
A rad recording position/a recording material conveying device for conveying the recording material, and the endless belt has an inner opening made of a conductive material and an insulating material rc! a circumferential groove is formed at a predetermined position in the axial direction of the roller or roller that contacts the endless belt, and a circumferential groove is formed at a predetermined position in the width direction of the endless belt to engage with the circumferential groove. Since the protrusions for regulating the position of the endless belt in the width direction are integrally formed, the recording material can be brought into close contact with the belt surface, and the recording material can be removed from the belt without using a static eliminator or the like. Provided is a recording device that can be quickly and easily separated and that can also solve the problem of recording deviations due to belt deviation or uneven movement speed.

[Brief explanation of the drawing]

FIG. 1 is a schematic partial perspective view showing the main structure of an embodiment of a recording material conveying device according to the present invention, FIG. 2 is a side view taken from arrow X in FIG. 1, and FIG. A schematic partial perspective view showing the main part configuration of another embodiment of the recording material conveyance device according to the invention, FIG. 4 is a side view seen from the arrow Y in FIG. 3, and FIG. 5 is the conveyance device according to the present invention. FIG. 6 is a side view showing the recording/rad and conveying device in FIG. 5. FIG. Below, symbols representing main components in the drawings are listed. 2a recording unit, 30 recording head, SIA, 31B
, 31C131D ＼Unit Note, 33 Platen, 34 Pin, 1 Paper Feeding Unit, 50 Recording Material, 6 (l vL Recording Material Conveying Device, 61- Endless Belt, 62 Drive Roller, 63- Followed Roller, 64.65 Ten J Yoshirolla, 67 Charger,
71 absolute ≦ layer, 72, conductive layer, 73 protrusion (rib)
, 74.7521 Circular groove, 77 Circumferential groove, 78 Coro. Figure 2

Claims (10)

[Claims] (1) In a conveyance device for a recording material, which is composed of an endless belt wound around at least two conveyance rollers, the endless belt has an inner layer made of a conductive material and an outer layer made of an insulating material; A circumferential groove is formed at a predetermined position in the axial direction of the roller or roller in contact with the belt, and a circumferential groove is formed at a predetermined position in the width direction of the endless heald for engaging with the circumferential groove and regulating the widthwise position of the endless belt. A conveyance device for a recording material, characterized in that a protrusion is integrally formed. (2) The recording material conveying device according to claim 1, wherein the conductive inner layer is made of conductive rubber. (3) The recording material conveyance device according to claim 1, wherein the inner circumferential surface of the conductive inner layer is subjected to a friction reduction treatment. (4) The thickness of the endless belt is 0.4 to 2.0 m
2. The recording material conveying device according to claim 1, wherein the recording material conveying device is m. (5) In a recording device that records on a recording material based on an image signal, the recording head forms an image on the recording material, a head mounting section for mounting the recording head, and a recording head mounted on the head mounting section. a recording material conveyance device that conveys the recording material to a recording position of the recording head, and the conveyance device is configured such that the endless belt has an inner layer made of a conductive material and an outer surface layer made of an insulating material. A circumferential groove is formed at a predetermined axial position of a roller or roller that contacts the endless belt, and a circumferential groove is formed at a predetermined position in the width direction of the endless belt by engaging with the circumferential groove. A conveyance device for a recording material, characterized in that a protrusion for regulating the movement is integrally formed. The conveyor belt has an inner layer made of a conductive material and an outer layer made of an insulating material, and at least two conveyor rollers around which the conveyor belt is wound. A groove is formed, and a protrusion is integrally formed at a predetermined position in the width direction of the inner layer to engage with the circumferential groove to regulate the width direction position of the conveyor belt. Characteristic recording device. (6) A claim characterized in that the recording head is an inkjet recording head that ejects ink using thermal energy and is equipped with an electrothermal converter for generating thermal energy. The recording device according to item 5. (7) The recording device according to claim 6, wherein the inkjet recording head discharges ink from the discharge port by the growth of bubbles due to film boiling caused by thermal energy applied by the electrothermal converter. . (8) In a conveyor belt that is applied to a conveyance mechanism that electrostatically attracts and conveys a recording material to a predetermined position separated from the inkjet recording head, the conveyor belt has a surface that attracts the recording material. It has a chargeable insulating layer and a conductive layer on the inner surface side of the insulating layer for discharging the charges of the charged insulating layer, and the volume resistivity of each of the insulating layer and the conductive layer is ( Insulating layer volume resistance value/conductive layer volume resistance value)
A recording material electrostatic adsorption conveyance belt for inkjet recording, characterized in that it satisfies ≧100. (9) The total thickness of the insulating layer and the conductive layer is 0.4 to
9. The recording material electrostatic adsorption conveyance belt for inkjet recording according to claim 8, wherein the belt has a thickness of 2.0 mm. (10) A circumferential groove is formed at a predetermined position in the axial direction of a roller or roller that contacts the conveyor belt, and at a predetermined position in the width direction of the suction belt, the groove is engaged with the circumferential groove to adjust the width direction position of the suction belt. 9. The recording material electrostatic attraction conveyance belt for inkjet recording according to claim 8, characterized in that a protrusion for regulating is integrally formed.