JP3504862B2 - Image transfer recording device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transfer recording apparatus for transferring ink of a donor sheet onto an image receiving sheet by laser exposure or the like to form a desired image.

[0002]

2. Description of the Related Art In the printing industry, a printing apparatus for proofreading is often used before printing with a printing machine for mass printing. This is because before printing using a printing machine capable of high-speed and large-volume printing, printing for proofreading is performed without expense or time. In the printing device for proof,
It is desirable to output an image that is as close to the finished image as possible. There are several types of such apparatuses, but a transfer type image recording apparatus is known to form a fine image even though it is a relatively small-scale apparatus.

In such an image transfer recording apparatus,
An image receiving sheet and a donor sheet are used. The image-receiving sheet is wound around an exposure drum, and a donor sheet is further laid on it. Further, by laser exposure, the donor ink of the donor sheet is transferred onto the image receiving sheet, and an image is formed on the image receiving sheet. Further, in order to form a color image, the above operation is repeated for the donor sheets of a plurality of colors. Therefore, only the exposed donor sheet is peeled off while the image-receiving sheet is wound around the exposure drum, and then another-color donor sheet is wrapped around the image-receiving sheet and laser exposure is performed. A color image can be formed on the image receiving sheet by sequentially repeating this operation for a plurality of donor sheets.

The image-receiving sheet having the image thus formed on its surface is transferred to a separate laminating section. In the laminating unit, the image receiving sheet is heated and pressed onto the printing paper (main paper) which is the original printing target, and the donor ink on the image receiving sheet is transferred to the main paper. As a result, a print image for proof is generated on the real paper.

[0005]

In the image transfer recording apparatus as described above, since thermal transfer is performed by laser exposure in a state in which the image receiving sheet and the donor sheet are in close contact with the drum, dust and the like may be present between both sheets. If there is such dust, ink transfer will not be performed in that portion. This causes the image transferred on the image-receiving sheet to be bleeding and deteriorate the quality of the print image generated on the real paper. Also, when dust is caught between the drum and the image receiving sheet, the same quality deterioration occurs.

Therefore, it is required that the inside of the apparatus is free from dust. However, the cutting dust generated when cutting the sheet, the foreign matter generated from the sliding portion of the sheet conveying mechanism, and the cover during maintenance are required. There are many causes of dust such as dust in the atmosphere invading from outside the device when opening and closing and paint on the cover, and it is difficult to keep the inside of the device completely dust-free.

As a conventional measure, a method of taking in filtered air into the device and keeping the inside of the device at a positive pressure to remove dust to the outside of the device has been adopted. The phenomenon that the image transferred to the image receiving sheet is missing is not sufficiently suppressed. In order to solve such a problem, it is considered that an adhesive roller is provided to remove dust adhering to the sheet from the sheet conveyed to the drum. By removing the dust from the sheet by bringing the adhesive roller into contact with the sheet being conveyed to the drum,
The amount of dust between the two sheets wound around the drum and between the drum and the image receiving sheet is reduced, so that the image transferred to the image receiving sheet is less likely to be missing.

However, if the method of bringing the adhesive roller into contact with the sheet is adopted, the sheet being conveyed may wind around the adhesive roller to cause a sheet jam. An object of the present invention is to prevent the sheet from winding around the adhesive roller when the adhesive roller is provided in the image transfer recording apparatus to remove dust from the sheet.

[0009]

According to a first aspect of the present invention, there is provided an image transfer recording apparatus, wherein a drum is wrapped with an image receiving sheet having an image receiving layer and a donor sheet having a donor layer, and a predetermined light is applied to the donor sheet according to an image to be recorded. Is applied to transfer the ink of the donor layer to the image receiving layer of the image receiving sheet. This image transfer recording apparatus includes a conveying unit, a pair of dust removing rollers, a roller moving unit, and a control unit. The conveying unit is a unit that conveys the image receiving sheet or the donor sheet to the drum. The pair of dust removing rollers are arranged so as to face each other with the image receiving sheet or the donor sheet conveyed by the conveying means interposed therebetween, and at least the roller on the image receiving layer side or the donor layer side is adhesive. When the conveyance paths of both sheets are different, it is preferable to dispose the dust removing roller pair at both positions of the image receiving sheet and the donor sheet, respectively. Deploy only on one of the two. The roller moving means moves at least one roller of the pair of dust removing rollers to contact and separate from the image receiving sheet / donor sheet conveyed by the conveying means. The control unit controls the roller moving unit so that both rollers of the dust removing roller pair sandwich the image receiving sheet / donor sheet after a part of the image receiving sheet / donor sheet passes between the rollers of the dust removing roller pair.

In this apparatus, since dust adhering on at least one of the image receiving sheet and the donor sheet is removed by the roller of the dust removing roller pair having adhesiveness, dust between both sheets wound around the drum is removed. Is reduced, so that the image transferred to the image receiving sheet is less likely to be missing. Also, since a part of the sheet passes between both rollers of the dust removing roller pair, the sheet is sandwiched by both rollers of the dust removing roller pair, so that when the sheet is sandwiched by both rollers of the dust removing roller pair, the leading edge of the sheet is already removed. It is located on the downstream side of the dust removal roller pair. Therefore, it is almost impossible for the sheet to wind around the roller due to the tip of the sheet sticking to the sticky roller.

As described above, since the control is performed so that the sheet is sandwiched by the dust removing roller pair after the sheet has passed, it is possible to prevent the sheet from being wound around the roller and causing the sheet jam. An image transfer recording apparatus according to a second aspect of the present invention is the apparatus according to the first aspect, in which both rollers of the dust removing roller pair have the same adhesiveness.

When a sheet is sandwiched by a pair of dust removing rollers and the tackiness of the two rollers is significantly different, the sheet is likely to stick to the stronger sticky roller and wind around the roller. Become. here,
Since the adhesiveness of both rollers that sandwich the sheet is set to be equal, the risk of the sheet wrapping around either roller is reduced.

An image transfer recording apparatus according to a third aspect is the apparatus according to the first or second aspect, further comprising an auxiliary dust removing roller. The auxiliary dust removing roller has a larger adhesive force than the dust removing roller pair having adhesiveness, and comes into contact with the adhesive dust removing roller pair. If the dust removing roller pair continues to remove dust from the sheet, a lot of dust will be attached to the rollers of the dust removing roller pair, and the ability to remove dust from the sheet will decrease.

In this case, since the auxiliary dust removing roller having a large adhesive force is in contact with the adhesive roller for removing dust from the sheet, the pair of adhesive dust removing rollers moves from the auxiliary dust removing roller to the auxiliary dust removing roller. A certain amount of dust moves. For this reason, the rate of decrease of the dust removal capability of the dust removal roller pair is slowed down, and the frequency of exchanging the dust removal roller pair can be reduced. Further, it becomes possible to more reliably remove dust from the sheet.

An image transfer recording apparatus according to a fourth aspect is the apparatus according to any one of the first to third aspects, further comprising a cutter. The cutter is provided with a cutter that cuts the image receiving sheet and a cutter that cuts the donor sheet. The cutter cuts the image receiving sheet or the donor sheet supplied to the drum into a predetermined length. Also,
The dust removing roller pair removes dust from the image receiving sheet or the donor sheet after being cut by the cutter.

Here, even if dust such as cutting dust is generated and adheres to the sheet when the sheet is cut by the cutter, the dust can be removed by the dust removing roller pair. In this way, dust is removed by the dust removal roller pair not on the sheet before cutting by the cutter but on the sheet after cutting by the cutter, so there is less dust attached to the sheet wound around the drum. Become.

An image transfer recording apparatus according to a fifth aspect of the present invention is the apparatus according to any one of the first to fourth aspects, further comprising a pair of anti-roll rollers. The anti-wrap roller pair is a
It is arranged on the downstream side in the transport direction of the donor sheet. The control unit sandwiches the image receiving sheet / donor sheet with both the dust removing roller pairs after a part of the image receiving sheet / donor sheet has passed between the both rollers of the dust removing roller pair and the both rollers of the anti-wrapping roller pair. To control the roller moving means.

In this apparatus, a wrap prevention roller pair is provided on the downstream side of the dust removal roller pair, and after a part of the sheet passes between both rollers of the wrap prevention roller pair, the sheet is removed by the dust removal roller pair. Is sandwiched between.
That is, when the dust removing roller pair including the sticky roller sandwiches the sheet, the front end of the sheet is already on the downstream side of the anti-wrap roller pair. Therefore, here, it is possible to more reliably prevent the sheet from being wrapped around the dust removing roller pair and causing the sheet jam.

An image transfer recording apparatus according to a sixth aspect is the apparatus according to the fifth aspect, wherein the dust removing roller pair is composed of a first rotation roller and a first driven roller, and the winding prevention roller pair is It is composed of a second rotation roller and a second driven roller. The first rotation roller rotates on its axis. The first driven roller is a roller that can approach and separate from the first rotation roller. The second rotation roller rotates on its axis. The second driven roller is in contact with the second rotation roller and rotates according to the rotation of the second rotation roller. The roller moving means moves the first driven roller of the dust removing roller pair.

In this apparatus, after the sheet passes between the first rotation roller and the first driven roller of the dust removal roller pair and between the second rotation roller and the second driven roller of the anti-wrap roller pair. The first driven roller approaches the first rotating roller, and the sheet is sandwiched by the first rotating roller and the first driven roller. That is, when the first rotating roller and the first driven roller sandwich the sheet, the leading edge of the sheet is already sandwiched between the second rotating roller and the second driven roller. Therefore, here, it is possible to prevent the sheet from being wound around the first rotation roller or the first rotation roller to cause the sheet jam.

An image transfer recording apparatus according to a seventh aspect is the apparatus according to any one of the first to sixth aspects, wherein the roller moving means holds the adhesive roller so that the roller can be moved in a substantially vertical direction. And a motor section for moving the main body section toward and away from the image receiving sheet / donor sheet conveyed by the conveying means.

Here, since the pair of sticky dust removing rollers are held so as to be movable in a substantially vertical direction with respect to the groove of the main body, dust from the sheet is adhered to its surface. It is possible to easily replace the rollers of the dust removing roller pair having adhesiveness with reduced dust removing ability.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] <Outline of Apparatus> FIG. 1 shows an image transfer recording apparatus according to an embodiment of the present invention. FIG. 1 is a vertical sectional view showing an outline of the image transfer recording apparatus 1. As shown in FIG. 1, the image transfer recording apparatus 1 includes an image receiving sheet supply unit 100, a donor sheet supply unit 200, a recording unit 300, and a discharge unit 400. The surface of the image transfer recording apparatus 1 is covered by a main body cover 10 and supported by legs 20.

In the image transfer recording apparatus 1, the image receiving sheet supplying section 100 supplies the image receiving sheet to the recording section 300. In addition, the donor sheet supply unit 200 can supply a plurality of types of donor sheets to the recording unit 300, and selectively selects one type of donor sheet from the plurality of types of donor sheets for the recording unit 300. Can be supplied to. In the recording unit 300, a donor sheet is further wound and wound on the image receiving sheet wound on the drum 310. Then, the donor sheet stacked on the image receiving sheet is subjected to laser exposure based on the image information to be recorded. When the donor ink of the donor sheet heated by laser exposure adheres to the image receiving sheet by sublimation or melting and is transferred, an image is formed on the image receiving sheet. Furthermore, a color image can be formed on the image receiving sheet by attaching donors of different donor colors of different colors (for example, yellow, magenta, cyan, and black) to the same image receiving sheet. This is accomplished by sequentially exchanging the exposed donor sheet with another color donor sheet and performing laser exposure while the image receiving sheet is wound around the drum 310, as described later.

The image receiving sheet on which this image is formed is ejected via the ejecting section 400 and taken out from this apparatus. Then, in a separately provided laminating section (not shown), the paper to be printed is heated and pressed. As a result, the donor ink is transferred from the image receiving sheet onto an arbitrary printing sheet to form an image. Next, each of the image receiving sheet supply unit 100, the donor sheet supply unit 200, and the recording unit 300 will be described in detail. <Image Receiving Sheet Supply Unit> FIG. 2 shows the image receiving sheet supply unit 100.
3 is a cross-sectional view showing details of a donor sheet supply unit 200. FIG. Here, first, the image receiving sheet supply unit 100 will be described.

The image receiving sheet supply section 100 has an image receiving sheet roll 130 and an image receiving sheet conveying section 150.
The image receiving sheet roll 130 includes a core 132 and the image receiving sheet 14
0 is wound. Also, the image receiving sheet 140
Has a supporting layer and an image receiving layer, and the image receiving layer is laminated on the supporting layer. In the image receiving sheet roll 130, the image receiving layer is wound so that the image receiving layer is on the outer side of the supporting layer. Further, the image receiving sheet roll 130 is installed so as to be rotatable around the central axis of the core 132.

The image receiving sheet conveying section 150 includes a motor 152.
A drive transmission chain 153, a pair of conveyance rollers 154a and 154b, and support guides 155 and 156.
An image receiving sheet cutting section 160, a sensor 169 for detecting an end point of the image receiving sheet, and an image receiving sheet dust removing section 180.
And have. The transport roller 154a is connected to the motor 152 by a drive transmission chain 153, and is rotated by driving the motor 152. Further, the carrying roller 154b can sandwich the image receiving sheet 140 with a predetermined pressure between the carrying roller 154b and the carrying roller 154a.
Then, the roller 154b is driven to rotate in the opposite direction to the rotation of the roller 154a, whereby the image receiving sheet 140 is rotated.
To transport. With such a driving mechanism, the image receiving sheet 140 can be sent out toward the recording unit 300 or can be returned in the opposite direction.

As shown in FIG. 3, the image receiving sheet cutting section 160 includes a cutter 162, a supporting section 164, and a guide 16.
6 and a sensor 168. Cutter 162
Is for cutting the image receiving sheet 140 guided by the guide 166 and conveyed onto the supporting portion 164. The sensor 168 detects the new leading edge of the cut image receiving sheet 140 when the image receiving sheet 140 on the side of the image receiving sheet roll 130 after cutting is returned backward as described later, and also receives the image receiving sheet 140. 14
The tip of 0 is also detected.

As shown in FIG. 3, the image receiving sheet dust removing section 180 includes a pair of dust removing rollers 181, an auxiliary dust removing roller 182, an upper and lower block 183, and a gear 18.
It has 4a, 184b and a motor 185. The pair of dust removing rollers 181 is the lower dust removing roller 18
1a and an upper dust removing roller 181b. Both rollers 181a and 181b are used for the image receiving sheet 14
It is arranged so as to be located above and below with 0 in between. The lower dust removing roller 181a rotates by a chain 153 driven by a motor 152, and a portion contacting the image receiving sheet 140 is an adhesive roller. The upper dust removing roller 181b has the same structure as an auxiliary dust removing roller 182 described below except for the strength of the adhesive force, and the upper and lower blocks 18 will be described later.
Supported by 3. This upper dust removing roller 181
The adhesive force of b is the same as that of the lower dust removing roller 181a.

The auxiliary dust removing roller 182 is supported by the upper and lower blocks 183, which will be described later, and the upper dust removing roller 181.
As shown in FIG. 4, the thick shaft 1
82a, a thin shaft 182b extending outward from both end faces of the thick shaft 182a, and an adhesive portion 182c wound around the thick shaft 182a. The bearing 187 shown in FIG. 4 is fixed to the end of the thin shaft 182b. The bearing 187 is put in a U-shaped groove 183c of the upper and lower blocks 183 described later. The adhesive force of the adhesive portion 182c is set to be larger than the adhesive force of the upper dust removing roller 181b.

The upper and lower blocks 183 support the upper dust removing roller 181b and the auxiliary dust removing roller 182 by supporting bearings fixed to both ends thereof.
As shown in FIGS. 3 and 4, the upper and lower blocks 183 are composed of a main body block, a stop block 183d, and two screws 183e. The body block has a rack 183a on the side surface, a U-shaped groove 183c on the front surface,
A protrusion 183b is formed on the back surface. Protrusion 183b
Is inserted into a vertically long opening 5a provided in the frame side plate 5 of the apparatus 1 and is movable up and down in the opening 5a. However, the protrusion 183b is restricted by the side plate 5 from moving in a direction other than the longitudinal direction of the opening 5a. In this state, the stopper block 183d is fixed to the end surface of the protrusion 183b by the screw 183e, so that the movement of the upper and lower blocks 183 away from the frame side plate 5 is restricted. The U-shaped groove 183c is a groove opened at the top,
As shown in FIGS. 3 and 4, the upper dust removing roller 181
Bearings fixed to both ends of b and the auxiliary dust removing roller 182 are inserted. Therefore, the auxiliary dust removing roller 1
82 is in a state of being pressed by the upper dust removing roller 181b by its own weight.

The gears 184 a and 184 b mesh with each other, and the gear 184 b is the rack 1 of the upper and lower blocks 183.
It meshes with 83a. The gear 184a is connected to the motor 18
It is rotated by rotating 5 (see FIG. 4). As a result, when the motor 185 rotates, the gears 184a, 18a
4b rotates, and the upper and lower blocks 183 move vertically. The position of the upper and lower blocks 183 is detected by a position sensor (not shown), and the operation of the motor 185 is stopped when the upper and lower blocks 183 reach a predetermined position. Specifically, the upper and lower blocks 183 are switched between the raised state shown in FIG. 10 and the lowered state shown in FIG. In the raised state of the upper and lower blocks 183 shown in FIG. 10, the bearings at both ends of the upper dust removing roller 181b are received by the lower ends of the U-shaped grooves 183c (see FIG. 3). On the other hand, FIG.
When the upper and lower blocks 183 shown in FIG. 1 are in the lowered state, the upper dust removing roller 181b is lower than the lower dust removing roller 181.
It is placed on the image receiving sheet 140 on a.
The bearings at both ends of the upper dust removing roller 181b are in a state of floating from the lower end of the U-shaped groove 183c.

<Donor Sheet Supply Unit> The donor sheet supply unit 200 has a rotary rack 210 shown in FIG. 1 and a donor sheet transport unit 270 (see FIGS. 2 and 5). A plurality of donor sheet rolls 230 are housed in the carousel 210 and arranged radially around the rotation axis. Each donor sheet roll 230 is a wound donor sheet 240. Donor sheet 240
Has a support layer and a donor layer, and the donor layer and the support layer are laminated. In the donor sheet roll 230, the donor layer is wound so that the donor layer is outside the support layer. The donor layer has a donor ink, and this donor ink is transferred to the image-receiving sheet by laser exposure.

FIG. 1 shows a case where six donor sheet rolls 230 having such a structure are accommodated in the carousel 210. The six types of donor sheets include, for example, a donor sheet of four colors of yellow (Y), magenta (M), cyan (C), and black (K) and a donor of special colors of two colors (for example, gold, silver, etc.). Sheets and can be used.

The carousel 210 further has a plurality of donor sheet feeding mechanisms by which a donor sheet 240 of a desired type is transferred from the donor sheet roll 230 to the donor sheet transport unit 270.
Is sent to. As shown in FIGS. 2 and 5, the donor sheet transport unit 270 includes a motor 272, a drive transmission chain 273, and transport rollers 274a and 274b.
Guides 276 and 277 and donor sheet cutting section 280
A sensor 289 for detecting the edge of the donor sheet, and a donor sheet dust removing section 290.

The carrying roller 274a is connected to the motor 272 by a drive transmission chain 273,
It is rotated by driving the motor 272. The transport roller 274b can sandwich the donor sheet 240 with a predetermined pressure between the transport roller 274b and the transport roller 274a. Then, the transport roller 274b transports the donor sheet 240 by rotating in the opposite direction to the rotation of the transport roller 274a. With such a driving mechanism, the donor sheet 240 can be sent out toward the recording unit 300, or vice versa.

As shown in FIG. 5, the donor sheet cutting section 280 includes a cutter 282, a supporting section 284, and a guide 2.
86 and a sensor 288. Cutter 28
2 cuts the donor sheet 240 guided by the guide 286 and conveyed onto the support portion 284. The sensor 288 detects a new front end of the cut donor sheet 240 when the donor sheet 240 on the side of the donor sheet roll 230 after cutting is reversed as described later, and also sends the donor sheet 240 out. The tip of 240 is also detected.

As shown in FIG. 5, the donor sheet dust removing portion 290 includes a pair of dust removing rollers 291, an auxiliary dust removing roller 292, a diagonal upper and lower block 293, gears 294a and 294b, and a motor 295. Have The pair of dust removing rollers 291 includes a lower dust removing roller 291a and an upper dust removing roller 291b. Both rollers 291a and 291b are arranged so as to be vertically positioned with the donor sheet 240 interposed therebetween. The lower dust removing roller 291a rotates by a chain 273 driven by a motor 272, and a portion contacting with the donor sheet 240 is an adhesive roller having an adhesive property. Upper dust removing roller 29
1b is an auxiliary dust removing roller 18 except for the adhesive strength
The structure is the same as that of 2, and the diagonal upper and lower blocks 29
Supported by 3. This upper dust removing roller 291
The adhesive force of b is the same as the adhesive force of the lower dust removing roller 291a.

The auxiliary dust removing roller 292 has a structure similar to that of the auxiliary dust removing roller 182, and is supported by an oblique upper and lower block 293 which will be described later, and the upper dust removing roller 291b.
On the diagonal of. The bearings fixed to both ends of the auxiliary dust removing roller 292 are the U-shaped groove 2 of the diagonal upper and lower blocks 293.
It is put in 93c. The adhesive force of the auxiliary dust removing roller 292 is set to be larger than the adhesive force of the upper dust removing roller 291b.

The diagonal upper and lower blocks 293 support the upper dust removing roller 291b and the auxiliary dust removing roller 292 by supporting bearings fixed to both ends thereof. The diagonal upper and lower blocks 293 are the upper and lower blocks 18
3 is similar to that of rack 29, as shown in FIG.
3a and a U-shaped groove 293c are formed. Gear 294
The a and 294b mesh with each other, and the gear 294b meshes with the rack 293a of the diagonally upper and lower block 293. The gear 294a is rotated by the rotation of the motor 295. As a result, when the motor 295 rotates, the gears 294a and 294b rotate, and the diagonal upper and lower blocks 293 move vertically along the diagonal direction. The position of the diagonal upper and lower blocks 293 is detected by a position sensor (not shown), and when the diagonal upper and lower blocks 293 reach a predetermined position, the operation of the motor 295 is stopped. Specifically, the diagonal upper and lower blocks 293 are different from those shown in FIG.
The descending state shown in 3 is switched. When the diagonal upper and lower blocks 293 are raised as shown in FIG. 12, the bearings at both ends of the upper dust removing roller 291b are U-shaped grooves 293c.
Received by the lower end of the (see FIG. 5). On the other hand, in the lowered state of the diagonal upper and lower blocks 293 shown in FIG. 13, the upper dust removing roller 291b is placed on the donor sheet 240 on the lower dust removing roller 291a, and both end portions of the upper dust removing roller 291b. The bearing is in a state of floating from the lower end of the U-shaped groove 293c.

<Recording Section> The recording section 300 has a drum 310 and a recording head 360 as shown in FIG. FIG. 6 is a perspective view showing the drum 310. The drum 310 has a hollow cylindrical shape and is rotatably held by a frame (not shown). The drum 310 is
The rotary shaft 312 is connected to a motor and is rotated by driving the motor. The recording head 360 can emit a laser beam in a beam shape, and the donor ink of the donor sheet 240 at the position irradiated with the laser beam is transferred to the surface (image receiving layer) of the image receiving sheet 140. The recording head 360 can be linearly moved in a direction parallel to the rotation axis of the drum 310 by a drive mechanism (not shown). Therefore, by the combination of the rotational movement of the drum 310 and the linear movement of the recording head 360, it is possible to laser expose a desired position on the donor sheet that covers the image receiving sheet. Therefore, by scanning the donor sheet with a laser beam, which is a light beam for drawing, and laser-exposing only the corresponding position based on the image information,
A desired image can be transferred to the image receiving sheet 140.

A plurality of holes 31 are formed on the surface of the drum 310.
4 are formed. The hole 314 is connected to a suction blower (not shown). When the image receiving sheet 140 and the donor sheet 240 are placed on the drum 310 and the suction blower is operated, these sheets are attracted to the drum 310. Further, the drum 310 has a plurality of groove portions 322. The plurality of groove portions 322 are provided in parallel with and parallel to the rotation axis of the drum 310. Drum 310
Further has a plurality of groove portions 324. Similar to the plurality of groove portions 322, the plurality of groove portions 324 are provided in parallel with the rotation axis of the drum 310 and in a straight line (FIG. 6).
reference). Further, each of the groove portions 324 exists at a position corresponding to each position of the groove portion 322 in the direction parallel to the rotation axis of the drum 310. Like this drum 31
0 has two rows of grooves 322 and 324.

As shown in FIGS. 2 and 8, a plurality of peeling claws 332 are provided above the drum 310 in parallel with and parallel to the rotation axis of the drum 310. Groove 3
The same number of the peeling claws 332 as 22 is provided, and each of the peeling claws 332 is provided at a position corresponding to each of the plurality of groove portions 322 in the direction parallel to the rotation axis of the drum 310.

As shown in FIGS. 2 and 8, two rollers (a drum dust removing roller 340 and a squeegee roller 334) are disposed above the drum 310.
These rollers 340 and 334 are arranged closer to the image receiving sheet conveying section 150 than the peeling claw 332, and bearings fixed to both ends are supported by the supporting member 350. The on-drum dust removing roller 340 is an adhesive roller having an adhesive property, and the squeegee roller 334 is an image receiving sheet 1.
A roller for pressing 40 and the donor sheet 240 against the drum 310.

As shown in FIG. 8, the supporting member 350 is an anchor type member, and is a first supporting portion 350a near the image receiving sheet conveying portion 150 and a second supporting portion 350 near the peeling claw 332.
b and a connecting portion 350 connecting both supporting portions 350a and 350b
c is a resin member integrally molded. The first support portion 350a is formed with a groove into which a bearing fixed to the end of the drum dust removing roller 340 is fitted. The second support portion 350b is formed with a groove into which a bearing fixed to the end of the squeegee roller 334 fits. Both rollers 34
The two support members 350 that support both ends of 0 and 334 are
It is fixed to both ends of the rotating shaft 350d and is connected by this. The rotary shaft 350d is pivotally supported by the side plate 5 of the device 1. A fan-shaped gear 350e is fixed to the rotary shaft 350d, and when the gear 351 meshing with the gear 350e rotates in accordance with the rotation of the motor 352, the rotary shaft 350d.
Rotates (see FIG. 8). The rotation angle of the rotating shaft 350d is monitored by a sensor (not shown).

The rotation of the rotary shaft 350d changes the posture of the support member 350. Specifically, the support member 350 is in the neutral state shown in FIG.
12, the state in which the squeegee roller 334 is pressed against the drum 310, and the on-drum dust removing roller 34 shown in FIG.
It can be changed to three postures in which 0 is brought into contact with the drum 310. <Operation of Device> Next, referring to FIG. 9 to FIG.
The operation of the image transfer recording apparatus 1 will be described. Information of each sensor and the like is collected in a control unit (not shown), and the control unit issues a command to a drive unit such as each motor. Hereinafter, the control by this control unit will be described.

First, as shown in FIG. 9, with the leading end portion of the image receiving sheet roll 130 sandwiched between the conveying rollers 154a and 154b, the drive mechanism such as the motor 152 makes the direction of the arrow AR11 in FIG. The image receiving sheet 140 is pulled out, and the image receiving sheet 140 is drawn out. When the front end of the image receiving sheet 140 is detected by the sensor 168, the motor 152 is instructed to advance the image receiving sheet 140 by a predetermined distance and stop the conveyance. FIG. 10 shows a state in which the conveyance of the image receiving sheet 140 is stopped. In this state, the leading edge of the image receiving sheet 140 is positioned 20 to 30 mm ahead of the contact portion with the lower dust removing roller 181a. The diameter of the lower dust removing roller 181a is about 30 mm. In this state, the image receiving sheet 14
The tip of 0 is located above the guide 155.

Next, the motor 185 is driven to lower the upper and lower blocks 183 from the position shown in FIG. 10 to the position shown in FIG. Then, the image receiving sheet 140 is 2
Lower dust removing roller 181 at a position of 0 to 30 mm
It is in a state of being sandwiched by a and the upper dust removing roller 181b. After that, the motor 152 is re-driven to rotate the carrying roller 154a and the lower dust removing roller 181a to carry the image receiving sheet 140 to the recording unit 300. At this time, the lower and upper dust removing rollers 181a and 181b
Removes dust adhering to the image receiving sheet 140 while rotating. Further, as the upper dust removing roller 181b rotates, the auxiliary dust removing roller 182 mounted thereon rotates. Since the auxiliary dust removing roller 182 has a larger adhesive force than the upper dust removing roller 181b, it transfers the dust attached to the upper dust removing roller 181b to itself.
In the recording unit 300, the conveyed image receiving sheet 1
40 is wound around the drum 310 while being pressed against the drum 310 by the squeegee roller 334 as shown in FIG. A plurality of holes 314 are formed on the surface of the drum 310, and the image receiving sheet 140 is sucked by the suction blower. As a result, the image receiving sheet 140 is wound while being attracted to the drum 310 as the drum 310 rotates in the direction of the arrow AR31 shown in FIG.

On the other hand, the image receiving sheet 140 is cut into a predetermined length by the image receiving sheet cutting section 160. A sensor 169 is used to measure the length. Image receiving sheet 14
The tip of 0 is detected by the sensor 169, and the motor 152
The length can be measured by taking into consideration the number of revolutions and the like. The image receiving sheet 140 is cut into a predetermined length based on the measurement result. The leading end of the cut image-receiving sheet roll 130 has the conveyance roller 15
4A and 154b are rewound so that their tips are clamped. This is for avoiding a state where the transport rollers 154a and 154b are in contact with a portion (a portion other than the leading end) where the image is transferred for a long time.

When the winding of the image receiving sheet 140 around the drum 310 is completed, the motor 352 is driven to support the supporting member 35.
By changing the posture of 0, the squeegee roller 334 is separated from the drum 310, and the on-drum dust removing roller 340 is brought close to the drum 310 (see FIG. 12). Then, the drum 310 is rotated in a state where the on-drum dust removing roller 340 is in contact with the image receiving layer of the image receiving sheet 140 wound around the drum 310. Then, the dust adhering to the image receiving layer of the image receiving sheet 140 is removed by the dust removing roller 34 on the drum.
Moving to 0, the image receiving layer is cleaned.

After cleaning the image receiving layer, the donor sheet 240 is next conveyed to the recording section 300. Carousel 2
The leading edge of the donor sheet 240 fed from the donor sheet roll 230 by the donor sheet feeding mechanism in 10 is detected by the sensor 288. When the leading edge is detected, the control unit instructs the motor 272 to advance the donor sheet 240 by a predetermined distance and stop the conveyance.
When the conveyance is stopped, the leading edge of the donor sheet 240 is located 20 to 30 mm ahead of the contact portion with the lower dust removing roller 291a. The diameter of the lower dust removing roller 291a is about 30 mm. In this state, the tip of the donor sheet 240 is in a state of being caught by the guide 276.

Next, the motor 295 is driven to lower the diagonal upper and lower blocks 293 to the position shown in FIG. Then, the donor sheet 240 is sandwiched between the lower dust removing roller 291a and the upper dust removing roller 291b at a position 20 to 30 mm from the leading edge. After that, the motor 272 is re-driven to rotate the transport roller 274a and the lower dust removing roller 291a to rotate the donor sheet 2
40 is conveyed to the recording unit 300. At this time, the lower and upper dust removing rollers 291a and 291b rotate to remove the dust attached to the donor sheet 240. Further, as the upper dust removing roller 291b rotates, the auxiliary dust removing roller 292 mounted thereon rotates. The auxiliary dust removing roller 292 is an upper dust removing roller 29.
Since the adhesive force is larger than that of 1b, the upper dust removing roller 2
The dust attached to 91b is transferred to itself.

In the recording section 300, the conveyed donor sheet 240 is wound around the drum 310 while being pressed against the drum 310 by the squeegee roller 334 as shown in FIG. FIG. 7 is a plan view showing the positional relationship between the image receiving sheet 140 and the donor sheet 240 on the drum 310. As shown in FIG.
The sizes of the two types of sheets, the image receiving sheet 140 and the donor sheet 240, are different from each other. Donor sheet 24
0 is larger than the image receiving sheet 140 in both the vertical direction and the horizontal direction. Therefore, the donor sheet 240
Is attracted to the drum 310 by a portion larger than the image receiving sheet 140. The donor sheet 240 is wound while being attracted to the drum 310 as the drum 310 rotates in the direction of arrow AR31 in FIG. Both the image receiving sheet 140 and the donor sheet 240 have the drum 310.
When it is wrapped around the image receiving sheet 1 as shown in FIG.
The tip of the donor sheet 240 exists at a position corresponding to the plurality of grooves 324, and the tip of the donor sheet 240 has a plurality of grooves 32.
The state exists at the position corresponding to 2. By having such a positional relationship, the image receiving sheet 140 and the donor sheet 240 can be easily peeled from the drum 310.

On the other hand, the donor sheet 240 is cut into a predetermined length by the donor sheet cutting section 280. A sensor 289 is used to measure the length. The length of the donor sheet 240 can be measured by detecting the tip of the donor sheet 240 with the sensor 289 and considering the rotation speed of the motor 272. The donor sheet 240 is cut into a predetermined length based on the measurement result.

For the donor sheet 240 wound around the drum 310, the dust collecting roller 3 on the drum is used.
No dust is removed from the outer surface of the donor sheet 240 by contacting 40. This does not significantly affect the transfer of an image from the donor layer inside the donor sheet 240 to the image receiving layer on the outer surface of the image receiving sheet 140 even if dust is attached to the dust, and If the outer surface of the donor sheet 240 is cleaned by the drum dust removing roller 340, the drum dust removing roller 34
This is because the replacement frequency of 0 becomes high.

The image-receiving layer of the image-receiving sheet 140 wound around the drum 310 and the donor layer of the donor sheet 240 are in contact with each other, and the donor ink of the donor layer is laser-exposed by the recording head 360 to receive the image of the image-receiving sheet 140. Transferred to the layer. The drum 310 during laser exposure
It is preferable that the rotation direction of is the rotation direction opposite to the arrow AR31. Donor sheet 240 on the side facing groove 322
This is because, if the tip of the above is the most upstream with respect to the rotation direction of the drum 310, the donor sheet 240 may be easily peeled off due to the gap existing between the donor sheet 240 and the groove portion 322.

Next, the donor sheet 240 after transfer is completed.
Are separated from the drum 310. Here, the drum 31
0 is rotated in the direction of arrow AR31 at a predetermined speed, and the tip of the peeling claw 332 is made to slip under the donor sheet 240 along the shape of the groove 322 at a predetermined timing. Then, the donor sheet 240 moves along the upper surface of the peeling claw 332 and is peeled from the drum 310. After the tip portion of the donor sheet 240 is peeled off, the drum 310 is further rotated by further rotation of the drum 310.
Then, it is peeled from the image receiving sheet 140, and is discharged to the discharging unit 400 by the transporting roller 414 (see FIG. 8) of the discharging unit 400.

Next, the donor sheet 240 of another color is placed on the image receiving sheet 140 which is still wound around the drum 310.
Is wrapped around. Then, by the above-described operation, the donor sheet 24 is applied to the image receiving sheet 140 by laser exposure.
After the donor ink of 0 is transferred, the donor sheet 240
Peel and discharge. The same operation is repeated for a predetermined plurality of types of donor sheets 240. For example,
By repeating the above operation for four types of donor sheets 240 of yellow (Y), magenta (M), cyan (C), and black (K), a color image is transferred to the image receiving sheet 140.

After that, the image receiving sheet 140 on which the plural kinds of donor inks have been transferred is peeled off. Image receiving sheet 14
The peeling of 0 is performed in the same manner as the peeling of the donor sheet 240. At this time, the peeling claw 332 approaches the plurality of groove portions 324 and peels the image receiving sheet 140 from the drum 310. Image receiving sheet 140 peeled off as described above
Are discharged to the discharge unit 400. <Characteristics of this device> (1) In this device, dust attached to the image receiving sheet 140 is removed by the dust removing rollers 181a and 181b, and dust attached to the donor sheet 240 is removed by the dust removing roller 291.
Since it is removed by the a and 291b, dust between the sheets 140 and 240 wound around the drum 310 is reduced, and the image transferred to the image receiving sheet 140 is less likely to be missing. In addition, the image receiving sheet 140 / donor sheet 240 includes the rollers 181a, 181b / 291a, 29.
After passing between 1b, the conveyance of the image receiving sheet 140 / donor sheet 240 is stopped and both rollers 181a, 181
Since the image receiving sheet 140 / donor sheet 240 is sandwiched between the b / 291a and 291b, the leading ends of the image receiving sheet 140 / donor sheet 240 are already located downstream of the rollers 181a, 181b / 291a, 291b when sandwiched. Therefore, the roller 181 in which the leading edge of the image receiving sheet 140 / donor sheet 240 has adhesiveness
The phenomenon of sticking to and wrapping around a, 181b / 291a, 291b hardly occurs. (2) When the image receiving sheet 140 / donor sheet 240 is sandwiched by both rollers 181a, 181b / 291a, 291b, both rollers 181a, 181b / 291
If the adhesiveness of a and 291b is greatly different, the image receiving sheet 1
40 / The donor sheet 240 is highly likely to be stuck and wound around the roller having the higher adhesiveness.

In this apparatus, both rollers 181a, 181b
/ 291a and 291b are set to have the same adhesiveness, so that the risk that the image receiving sheet 140 / donor sheet 240 is wrapped around either roller is reduced. (3) When dust is continuously removed from the image receiving sheet 140 / donor sheet 240, dust removing rollers 181b / 291b
A lot of dust will be attached to the surface, and the ability to remove dust will decrease.

In this apparatus, dust removing rollers 181b / 2
Since the auxiliary dust removing roller 182/292 is in contact with 91b, a predetermined amount of dust moves from the dust removing roller 181b / 291b to the auxiliary dust removing roller 182/292. Therefore, the dust removing rollers 181b / 291b
The reduction rate of the dust removal capacity of the dust removal roller is slow, and the dust removal rollers 181b / 291b are replaced less frequently. Also, the image receiving sheet 140 / donor sheet 240
Removal of dust from the can be performed more reliably. (4) In this apparatus, the image receiving sheet dust removing unit 180 / donor sheet dust removing unit 290 is connected to the image receiving sheet cutting unit 160 /
It is arranged on the downstream side of the donor sheet cutting section 280. Therefore, the cutter 162 / of the image receiving sheet cutting unit 160
Even if dust such as cutting dust is generated and adheres to the image receiving sheet 140 / donor sheet 240 when the image receiving sheet 140 / donor sheet 240 is cut by the cutter 282 of the donor sheet cutting unit 280, the dust removing roller 181
The dust can be removed by a, 181b / 291a, 291b. (5) In this device, as shown in FIGS. 3 to 5, the upper dust removing rollers 181b / 291b and the auxiliary dust removing rollers 182/292 can be easily attached to and detached from the upper and lower blocks 183 / obliquely upper and lower blocks 293. Therefore, the upper dust removing rollers 181b / 291b and the auxiliary dust removing rollers 182/292, which have reduced dust removing ability by adhering dust from the image receiving sheet 140 / donor sheet 240 to their surface, are easily replaced. be able to.
Further, as shown in FIG. 8, since the on-drum dust removing roller 340 can be easily attached to and detached from the support member 350, dust from the drum 310 or the image receiving sheet 140 can be attached to its own surface. It is possible to easily replace the on-drum dust removing roller 340 having a reduced dust removing ability. (6) In the present device, even when dust is generated in the device 1 or dust enters the device 1 from outside the device 1 during maintenance such as opening the main body cover 10, the drum dust removing roller 340 is also used. By contacting the drum 310, dust can be removed from the surface of the drum 310 (see FIG. 12). Further, as for dust adhering to the image receiving sheet 140 wound around the drum 310, the dust removing roller 340 on the drum is brought close to the drum 310 and brought into contact with the image receiving sheet 140 as shown in FIG. It is possible to remove dust. As a result, it is possible to prevent the image transferred to the image receiving sheet 140 from being missing due to dust adhering to the surface of the drum 310 or dust existing between the sheets 140 and 240. (7) In this apparatus, the image receiving sheet 140 / donor sheet 2
Since the squeegee roller 334 presses the image receiving sheet 140 / donor sheet 240 against the drum 310 as the 40 is wound around the drum 310, the image receiving sheet 140
/ The state in which the donor sheet 240 is wound around the drum 310 is improved. Further, here, the squeegee roller 334 and the on-drum dust removing roller 340 are moved by the same motor 352. Since the squeegee roller 334 and the dust removing roller 340 on the drum are moved by the same motor 352 as described above, the squeegee roller 334 is
Further, the manufacturing cost is suppressed as compared with the case where the driving means is separately provided for each of the on-drum dust removing roller 340. (8) In this apparatus, the on-drum dust removing roller 340 and the squeegee roller 334 are supported by the same supporting member 350, and when one approaches the drum 310, the other moves away from the drum 310. Therefore, the squeegee roller 334 causes the image receiving sheet 140
When the image-receiving sheet 140 / donor sheet 240 is wound around the drum 310 while pressing the donor sheet 240 against the drum 310, the on-drum dust removing roller 340 having adhesiveness receives the image-receiving sheet 140 / donor sheet 24.
It has been avoided to contact 0 to prevent good winding of the image-receiving sheet 140 / donor sheet 240 around the drum 310. (9) In the present apparatus, even if dust is attached to the outside of the donor sheet 240 wound around the drum 310, the influence on the transfer of the image from the donor layer to the image receiving layer is small. The dust is not removed by the take-off roller 340. That is, the on-drum dust removing roller 340 removes dust only from the surface of the drum 310 and the image receiving layer outside the image receiving sheet 140 wound around the drum 310. As a result, the frequency of use of the dust removal roller 340 on the drum is reduced compared to the case where the dust removal roller 340 on the drum is brought into contact with the outer surface of the donor sheet 240 to remove the dust, and frequent replacement is required. Is gone.

[Second Embodiment] In the first embodiment, the image receiving sheet 140 / donor sheet 240 is conveyed after the leading edge of the image receiving sheet 140 / donor sheet 240 has passed between the rollers 181a, 181b / 291a, 291b. Stop both rollers 181a, 181b / 291a, 2
Image receiving sheet 140 / donor sheet 240 by 91b
By sandwiching the rollers 181a, 181b / 291 so that the leading ends of the image receiving sheet 140 / donor sheet 240
Although it is suppressed from wrapping around a and 291b,
As shown in FIG. 7, a roller pair for preventing wrapping is further provided to more securely receive the image receiving sheet 140 / donor sheet 240.
It is also possible to suppress the winding around the rollers 181a, 181b / 291a, 291b. <Structure> In the device of the present embodiment, in addition to the structure of the first embodiment, a pair of wrap preventing rollers 157 shown in FIG.
a, 157b / 275a, 275b are provided.

Winding prevention roller pair 157a, 157
b is disposed adjacent to the dust removing rollers 181a and 181b on the side of the dust removing rollers 181a and 181b near the drum 310. The roller 157 a meshes with a gear 158 connected to the motor 152 by a drive transmission chain 153, and is rotated by driving the motor 152. Further, the roller 157b and the roller 157a can sandwich the image receiving sheet 140 with a predetermined pressure. Then, the roller 157b is driven to rotate in the opposite direction to the rotation of the roller 157a.

Winding prevention roller pair 275a, 275
b is disposed adjacent to the dust removing rollers 291a and 291b on the side of the dust removing rollers 291a and 291b near the drum 310. The roller 275 a meshes with a gear 279 connected to the motor 272 by a drive transmission chain 273, and is rotated by driving the motor 272. Further, the roller 275b and the roller 275a can sandwich the donor sheet 240 with a predetermined pressure. Then, the roller 275b is driven to rotate in the opposite direction to the rotation of the roller 275a. <Operation> When the front end of the image receiving sheet 140 is detected by the sensor 168 when the image receiving sheet 140 is sent to the drum 310, the motor 152 is instructed to advance the image receiving sheet 140 by a predetermined distance and stop the conveyance. . Then, in the state where the conveyance is stopped, the image receiving sheet 140
The tip of the roller is a pair of roller 157a, 157b for preventing wrapping.
It will be sandwiched between. That is, the leading end of the image receiving sheet 140 is located at a position slightly passing the nip portion of the anti-wrap roller pair 157a, 157b by passing between the dust removing rollers 181a, 181b. Next, the motor 185
Is driven to lower the upper and lower blocks 183, the image receiving sheet 140 is sandwiched between the dust removing rollers 181a and 181b, and the motor 152 is driven again to convey the image receiving sheet 140 to the drum 310.

Further, the donor sheet 240 is attached to the drum 310.
When the front end of the donor sheet 240 is detected by the sensor 288 when the sheet is sent to the, the motor 272 is instructed to advance the donor sheet 240 by a predetermined distance and stop the conveyance. And in the state where the transportation is stopped,
The leading end of the donor sheet 240 is in a state of being sandwiched between the anti-wrap roller pair 275a, 275b. That is,
The leading edge of the donor sheet 240 has both dust removing rollers 291.
Roller pair 2 for preventing wrapping passing between a and 291b
It is located slightly beyond the nip portion of 75a and 275b. Next, the motor 295 is driven to lower the diagonal upper and lower blocks 293, the donor sheet 240 is sandwiched between the dust removing rollers 291a and 291b, and the motor 295 is redriven to convey the donor sheet 240 to the drum 310. <Characteristics> In this device, dust removing rollers 181a, 181
b / 291a, 291b is provided with a roller pair 157a, 157b / 275a, 275b for preventing wrapping, and the image receiving sheet 140 / donor sheet 240 is a roller pair 157a, 157b / 275a, 275 for preventing wrapping.
After passing between both rollers of b, the dust removing roller 181
a, 181b / 291a, 291b, the image receiving sheet 1
40 / donor sheet 240 is sandwiched. That is, the dust removing rollers 181a and 181b having adhesiveness
, 291a and 291b sandwich the image receiving sheet 140 / donor sheet 240, the leading edge of the image receiving sheet 140 / donor sheet 240 is already wrapped around the roller pair 1 for preventing wrapping.
57a, 157b / 275a, 275b. Therefore, here, the image receiving sheet 140 / the donor sheet 240 are the dust removing rollers 181a, 181b /
It is reliably suppressed that the sheets are jammed by being wound around the 291a and 291b.

[0066]

According to the present invention, the control is performed so that the sheet is sandwiched by the dust removing roller pair after the sheet has passed, and therefore the sheet is wound around the sticky dust removing roller pair to cause a sheet jam. Can be suppressed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an outline of an image transfer recording apparatus according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of an image receiving sheet conveyance unit and a donor sheet conveyance unit.

FIG. 3 is an enlarged vertical sectional view of an image receiving sheet conveying section.

FIG. 4 is a sectional view of an image receiving sheet dust removing portion.

FIG. 5 is an enlarged vertical cross-sectional view of a donor sheet conveyance unit.

FIG. 6 is a perspective view of a drum.

FIG. 7 is a plan development view of an image receiving sheet and a donor sheet on a drum.

FIG. 8 is a vertical cross-sectional view around a dust removing roller on a drum and a squeegee roller.

FIG. 9 is an operation state diagram of the image transfer recording apparatus.

FIG. 10 is an operation state diagram of the image transfer recording apparatus.

FIG. 11 is an operation state diagram of the image transfer recording apparatus.

FIG. 12 is an operation state diagram of the image transfer recording apparatus.

FIG. 13 is an operation state diagram of the image transfer recording apparatus.

FIG. 14 is a vertical cross-sectional view of an image receiving sheet conveyance unit and a donor sheet conveyance unit according to the second embodiment.

[Explanation of symbols]

1 Image transfer recording device 140 image receiving sheet 150 image receiving sheet conveying section (conveying means) 157a, 157b Winding prevention roller pair 162 cutter 181 dust removal roller pair 181a Lower dust removal roller 181b Upper dust removal roller 182 Auxiliary dust removal roller 240 donor sheet 270 Donor sheet transport unit (transport means) 282 cutter 291 Dust removal roller pair 291a Lower dust removal roller 291b Upper dust removal roller 292 Auxiliary dust removing roller 310 drums

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuzo Tokimasa 5 East Higashikujo Minami Ishida-cho, Minami-ku, Kyoto Dainichi Moto Screen Manufacturing Co., Ltd., Jujo Works (56) Reference JP-A-7-290731 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B41J 2/32 B41J 29/17 G03G 15/01 112 G03G 21/10

Claims (7)

(57) [Claims] 1. A drum is wrapped with an image-receiving sheet having an image-receiving layer and a donor sheet having a donor layer, and the donor sheet is irradiated with predetermined light according to an image to be recorded, whereby the ink of the donor layer is image-received. An image transfer recording device for transferring to an image receiving layer of a sheet, comprising: a conveying unit that conveys the image receiving sheet / the donor sheet to the drum, and the image receiving sheet / the donor sheet conveyed by the conveying unit, which face each other. And a pair of dust removing roller pairs in which at least the rollers on the image receiving layer / donor layer side are adhesive, and at least one roller of the pair of dust removing roller pairs is conveyed by the conveying means. Image receiving sheet /
Roller moving means for contacting and separating from the donor sheet, and both rollers of the dust removing roller pair after the image receiving sheet / part of the donor sheet has passed between both rollers of the dust removing roller pair. A control unit that controls the roller moving unit so as to sandwich the sheet / the donor sheet;
Image transfer recording device. 2. The image transfer recording apparatus according to claim 1, wherein both the rollers of the dust removing roller pair have the same adhesiveness. 3. The image transfer recording apparatus according to claim 1, further comprising an auxiliary dust removing roller that has a larger adhesive force than the dust removing roller pair having adhesiveness and is in contact with the rollers. 4. A cutter for cutting the image-receiving sheet / donor sheet supplied to the drum into a predetermined length, the dust-removing roller pair being the image-receiving sheet / the sheet after being cut by the cutter. The image transfer recording apparatus according to claim 1, wherein dust is removed from the donor sheet. 5. A pair of anti-rolling rollers arranged downstream of the dust removing roller pair in the conveying direction of the image receiving sheet / donor sheet are further provided, and the control section includes the image receiving sheet / donor sheet. The rollers so that the image receiving sheet / donor sheet is sandwiched by the rollers of the dust removing roller pair after a part of the sheet has passed between the rollers of the dust removing roller pair and the rollers of the anti-roll roller. The image transfer recording apparatus according to claim 1, which controls a moving unit. 6. The dust removing roller pair includes a first rotating roller that rotates about its axis and a first driven roller that can approach and separate from the first rotating roller, and the pair of winding prevention rollers rotate about itself. The second rotation roller and a second driven roller which is in contact with the second rotation roller and rotates in accordance with the rotation of the second rotation roller, wherein the roller moving means includes the first driven roller of the dust removing roller pair. The image transfer recording apparatus according to claim 5, wherein the roller is moved. 7. The roller moving means includes a body portion having a groove portion for holding an adhesive roller movably in a substantially vertical direction, and the image receiving sheet / the donor conveyed by the conveying means. The image transfer recording apparatus according to claim 1, further comprising a motor unit that moves the main body unit toward and away from the sheet.