JP2001026141A - Recorder and bidirectionally fixed recording drum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of cutting chips by making a recording drum turnable in the direction reverse to one direction, and setting the feeding direction of an image receiving sheet and a toner sheet oppositely. SOLUTION: A carrying roller section and a back/forth carrying roller section are positioned in the feeding paths to a recording drum 34 from an image receiving sheet R feeding section and a toner sheet T feeding section, respectively. A round cutter 11 and a fixed cutter 12 are provided, as a sheet cutter, between them and the recording drum 34 is made turnable in the direction C reverse to one direction A. The recording drum 34 is then turned in the direction A and the image receiving sheet R is fed out from the roll while directing the image receiving face upward before being cut by means of the round cutter 11. On the other hand, a recording sheet R is fed out while directing the image receiving face upward and then the image receiving face is cut by means of the round cutter 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a recording apparatus for recording information such as characters, particularly information such as color images / characters using KCMY toners, and more particularly to a recording apparatus which does not generate cutting dust when cutting a recording medium. .

[0002]

2. Description of the Related Art A recording apparatus to which the present invention is applied includes a recording medium (that is, an image receiving sheet fixed on a recording drum) on a recording drum (hereinafter referred to as a "recording drum") or a recording plane. An image receiving sheet and a toner sheet, which are formed by fixing a toner sheet so as to cover the image receiving sheet, are fixed thereon, and a laser beam or the like from an optical head is irradiated onto the image receiving sheet to record an image. . FIG. 5 is a conceptual diagram of the entire recording apparatus to which the present invention is applied. In the figure, reference numeral 30 denotes this recording apparatus, and the recording apparatus 30 is a recording medium supply unit 32 for obtaining a full-color image.
A recording drum 34, a recording medium fixing / releasing mechanism 36 provided on the recording drum 34, a laminating mechanism 38 disposed along the outer periphery of the recording drum 34, an exposure head 40, a peeling mechanism 42, Paper feed unit 44, laminating unit 46, fixing unit 48, peeling unit 50, tray unit 5
2, a control unit 54, and a cutting unit 55.

The recording apparatus 30 includes a recording medium supply unit 32
Supplies the image receiving sheet R and the toner sheet T onto the recording drum 34, first fixes the image receiving sheet R on the recording drum 34 by the recording medium fixing / release mechanism 36, and then presses and heats and presses by the laminating mechanism 38. Then, the toner sheet T is adhered and laminated on the image receiving sheet R. Next, heat mode laser exposure is performed imagewise by the exposure head 40 controlled by the control unit 54 according to the image signal, and an image is recorded as a latent image. Subsequently, the toner sheet T is peeled from the image receiving sheet R fixed on the recording drum 34 by the peeling mechanism 42, and the image of the toner sheet T recorded as a latent image is transferred to the image receiving sheet R and developed.
An image is formed on the image receiving sheet R. This process is repeated for three to four colors to form a color image on the image receiving sheet R. Then, the image receiving sheet R and the paper H supplied from the paper feeding unit 44 are laminated and adhered in the laminating unit. After the image receiving layer 16 of the image receiving sheet R is light-cured, the paper H on which the full-color image is formed is peeled off at the peeling section 50, the proof tray 52a is used, and the used image receiving sheet R is used as the waste material stacker 5
2b. Thus, a full-color image can be obtained as a hard copy.

The recording medium supply unit 32 includes a recording medium (that is, a roll-shaped image receiving sheet R and a plurality of toner sheets T, for example, K (black), C (cyan), and M (magenta).
And a recording medium station 53 holding a roll-shaped heat-sensitive material such as a standard donor sheet of Y (yellow) or a special color sheet such as gold or silver used in the printing field.
A pair of pull-out rollers 54 for pulling out one recording medium, a cutter 55 for cutting the recording medium pulled out from the recording medium station 53 to a predetermined length by the pull-out roller 54 into a sheet, and nipping and conveying the sheet-shaped recording medium. A pair of rollers 56 and a guide 57 that guides the sheet-shaped recording medium onto the recording drum 34 and guides the leading end of the recording medium to the recording medium fixing / release mechanism 36 mounted on the recording drum 34 to a fixed position. Become.

The image receiving sheet R is first supplied to the recording drum 34, and the leading end thereof is fixed to a mechanism 36 by a clamp or the like, and is wound around the outer periphery of the recording drum 34 by rotating the recording drum 34 in the direction of the arrow in the drawing. The rear end is also fixed by the recording medium fixing / release mechanism 36. Here, at least one of the leading end fixing portion and the trailing end fixing portion of the recording medium fixing / releasing means 36 is adapted to fix recording medium sheets of various lengths on the recording drum 34.
It is preferable to be able to move on the outer periphery of the. Next, the toner sheet T conveyed from the recording medium supply unit 32 is stacked and wound on the image receiving sheet R wound on the outer periphery of the recording drum 34 in the same manner. The lamination of the toner sheet T on the image receiving sheet R includes a laminating roller 58 having a built-in heater (not shown) therein, and an arm for rotating the laminating roller 58 around a fulcrum 59a and moving toward and away from the outer periphery of the recording drum 34. 59, and a laminating mechanism 38 comprising a pressing means 60 for pressing the laminating roller 58 against the outer periphery of the recording drum with a predetermined pressing force. The pressing means 60 may be a biasing means such as a spring or a manipulator of an air cylinder. Since the outermost image receiving layer of the image receiving sheet R has an adhesive property, the toner sheet can be wound and laminated while being pressed by the laminating roller 58 with a predetermined pressing force. of course,
The image receiving layer of the image receiving sheet R and the toner sheet T with uniform adhesive force
Can be bonded to the toner layer. Here, the lamination of the toner sheet T to the image receiving sheet R is performed by the pressure laminating roller 58 in order to uniformly and strongly adhere, but the laminating roller 5 is used in order to improve the adhesive force.
It is also preferable to laminate while heating 8 simultaneously with pressurization. The heating condition is preferably 130 ° C. or lower, more preferably 100 ° C. or lower.

When the image receiving sheet R is wound around the recording drum 34, the leading end thereof is fixed to a recording medium fixing / release mechanism 3.
It is preferable that the image receiving sheet R is fixed by the transfer roller 6, the other portion of the image receiving sheet R is held by the conveying roller pair 56 or the laminating roller 58 or other means, and the image receiving sheet R is wound around the outer circumference of the recording drum 34 with a predetermined tension. At this time,
As will be described later, a suction hole may be provided on the outer periphery of the recording drum 34, and the image receiving sheet R may be sucked by using suction means (see FIG. 3). It is preferable to use both the suction means and the recording medium fixing / releasing mechanism 36, but only one of them may be used. By doing so, the image receiving sheet R can be fixed to the outer periphery of the recording drum 34 without causing wrinkles or the like and without causing a positional shift. Further, it is preferable to apply tension to the toner sheet T even when the toner sheet T is laminated on the image receiving sheet R. At this time, similarly to the winding of the image receiving sheet R, the leading end and / or the trailing end of the toner sheet T may be fixed by using the recording medium fixing / releasing mechanism 36, or the above-mentioned suction means may be used together. You may. It is preferable that the tension applied to the toner sheet T during lamination be smaller than the tension applied to the image receiving sheet R during winding around the recording drum 34.

The exposure head 40 includes a laser head 24 including a modulating means and emitting a high-density energy light such as a laser beam, an imaging lens for adjusting the beam spot diameter of the laser light, and the like. And a sub-scanning means 61 for performing sub-scanning by moving the recording medium in the axial direction of the recording drum 34 (a direction perpendicular to the plane of FIG. 1). The main scanning of the toner sheet T by the laser beam is performed by the recording drum 34.
The rotation is performed. Here, the exposure head 40 may not be provided with the sub-scanning moving means 61, but may be provided with an axial moving means on the recording drum 34, and may perform the sub-scanning by moving the recording drum 34 in the axial direction while rotating the main scanning. As a laser light source, it is sufficient that high-density energy light capable of heat-mode exposure can be emitted. , A dye laser, an excimer laser and the like can be used. Modulation of a laser beam by an image signal is performed by, for example, passing a beam through an external modulator in the case of an argon ion laser, or controlling (directly modulating) a current injected into the laser by a signal in the case of a semiconductor laser (direct modulation). It is carried out by the method described below. The size of the laser spot focused on the light-to-heat conversion layer and the scanning speed are set according to the resolution required for the image, the recording sensitivity of the material, and the like.
In the case of printing applications, generally a high resolution is required, and a smaller beam spot is preferable in terms of image quality, but on the other hand, the depth of focus becomes smaller, and mechanical control becomes difficult. On the other hand, if the scanning speed is too low, heat loss due to heat conduction to the toner sheet support or the like becomes large, energy efficiency is reduced, and the recording time is undesirably long. From the above, the recording conditions in the present invention are such that the beam diameter on the light-to-heat conversion layer is 5 to 50 μm, particularly preferably 6 to 30 μm, and the scanning speed is 1 m / sec or more, preferably 3 m / sec or more.

The image signal is sent to an image reading device, an image processing device, a workstation (W / S) having a DTP function, an electronic publishing system and various storage media (magnetic tape, floppy disk, etc.) outside the recording device 30 of the present invention. , A hard disk, a RAM card, etc.) as a digital signal via an interface or the like to the control unit 54, after performing necessary processing, and then to the exposure head 40 to control the heat mode exposure of the laser head 24. Is performed. The control unit 54 controls the sub-scanning unit 61 of the exposure head 40.
, The control of each part of the recording apparatus 30 of the present invention, the control of the entire sequence, and the like.

The peeling mechanism 42 peels off the toner sheet T on which an image has been formed as a latent image by heat mode exposure by the exposure head 40 from the image receiving sheet R, and simultaneously peels and transfers the latent image of the toner sheet T onto the image receiving sheet R. A separating roller 62, two split rollers 63 and 64 in contact with the separating roller 62, and a separating roller 6.
2, a comb blade guide plate 65 provided between the divided roller pieces of the divided rollers 63 and 64, and a bracket (not shown) for integrally attaching these. The peeling roller 62 is rotatably supported by an arm 67, rotates about a fulcrum 67 a, and is configured to be able to contact and separate on the recording drum 36. Further, a pressing means 68 for pressing the peeling roller 62 via the arm 67 against the stacked body of the image receiving sheet R and the toner sheet T on the recording drum 34 is provided.

Heat energy is applied imagewise by the heat mode exposure, and the adhesive force of the toner layer 22 is reduced to form an image as a latent image, and a toner sheet T and an image receiving sheet 16 having the image receiving layer 16 to which the image is adhered. The arm 67 is rotated about the fulcrum 67a with respect to the stacked body of R and the bracket is brought close to the stack, and a comb blade is provided between the image receiving layer 16 of the image receiving sheet R and the toner layer 22 of the toner sheet T of the stacked body. The guide plate 65 is inserted and the laminate is
It is pressed by the peeling roller 62 from the side. Here, if the joining length of either the toner sheet T or the image receiving sheet R is changed, the comb blade guide plate 65 can be easily inserted between them. Thereafter, the recording drum 34 is rotated, and at the same time, the peeling roller 62 and the split rollers 63 and 64 are rotated, so that the leading end of the toner sheet T is moved along the comb blade guide 65 to be sandwiched between the peeling roller 62 and the split roller 63. Thus,
While the toner sheet T is pressed by the separation roller 62, the toner sheet T is pinched and conveyed between the separation roller 62 and the split rollers 63 and 64, and is separated from the image receiving sheet R. In this manner, the toner sheet T can be peeled at a constant peeling speed at a portion pressed by the peeling roller 62, so that the peeling force can be kept constant, and vibration phenomena such as stick-slip do not occur. Does not occur. Further, at the time of peeling, since the peeling force applied to the image receiving sheet R does not change,
The fixed position of the image receiving sheet R on the recording drum 34 does not shift. Therefore, there is no reduction in register accuracy.
In this manner, a high-quality, high-resolution, high-gradation halftone dot image free from peeling unevenness and misregistration can be obtained. The image receiving sheet R on which the images of the four colors C, M, Y and K are accurately registered, peeled, transferred and developed is guided by the guide members 70 and 70 by the transport roller pair 71 while being guided by the guide members 70 and 70. The sheet is conveyed to the laminating section 46. In the laminating section 46, the main paper supply roll 72 is moved to the main paper cassette 7 in synchronization with the conveyance of the image receiving sheet R.
3, the paper H is sent out, and is conveyed leftward in the figure while being guided by the guide member 70. Manual paper H for manual feed port 4
4a to the paper supply roll 72. Next, the image receiving sheet R and the paper H are transferred to the registration roller pair 7.
The sheets are stacked while being aligned by 5, and conveyed to the fixing unit 48.

In the fixing section 48, the image receiving sheet R and the paper H stacked in the laminating section 46 are nipped and conveyed while being heat-fixed by a heat fixing roller pair 76 composed of a pressure roller 76a and a heating roller 76b.
Further, the image receiving layer 16 of the image receiving sheet R may be further cured by a post-exposure lamp 77 such as an ultraviolet lamp so as to be easily peeled off. Next, in the peeling unit 50, the image receiving layer 16 that is hardened and easily peeled off is peeled from the image receiving sheet R by the peeling roller pair 78 and the peeling guide 79, and the image receiving layer 16 is adhered to the main paper H to transfer an image. The actual paper H on which the image has been transferred is discharged as a hard copy to the proof tray 52a of the tray unit 52, and the image receiving sheet R from which the image receiving layer 16 has been peeled is discarded to a waste tray 52b.

[0012]

A sheet fed from a roll is provided to an apparatus for transporting a recording medium and a recording medium supply / conveyance section for supplying / conveying the recording medium to a recording section for recording the recording medium with a laser or a thermal head. There is provided a cutting device for cutting the recording medium in the shape of a circle. That is, a straight fixed blade and a tool rest guide are provided in parallel on a cutter frame extending in a direction perpendicular to a traveling direction of a roll paper or a film to be cut, and the gap is sandwiched between transport rollers in front and behind the unit. The cutting operation is performed by the rotatable round blade urged by the tool post guide according to a sequence set by the passed sheet-shaped recording medium and electrically set.

In FIG. 5, 55 is the cutting device.
When the cutting device 55 cuts the recording medium P, cutting dust is generated. The cause of garbage is considered as follows. FIG. 4 shows the cutting device 55. FIG. 4A is a front view thereof, and FIG. 4B is a sectional view taken along line AA of FIG. 4A. FIG. 4B shows a case where the coating film of the recording medium (image receiving sheet and toner sheet) is on the upper side, and FIG. 4B shows a case where the coating film of the recording medium (image receiving sheet and toner sheet) is on the lower side. The cutting state of each recording medium is shown. 4
1 is a round blade (3 cm in diameter) which constitutes a part of the cutting device 55.
Is a fixed blade constituting another part of the cutting device 55. The round blade 41 is rotated by a motor (not shown) in the rotation direction B.
Turret guide (not shown) and fixed blade 42 while rotating
Along the traveling direction C. The sheet-shaped recording medium P is located between the round blade 41 and the fixed blade 42.
In FIG. 4A, the sheet-shaped recording medium P indicates its width direction, and in FIG. 4B, the sheet-shaped recording medium P indicates its length direction (upstream and downstream). The round blade 41 has an inclined portion 41a that is cut obliquely in the circumferential direction. The inclined portion 41a operates with the fixed blade 42 to cut the recording medium P. It has now been found that there is a great difference in the manner in which cutting dust is generated between cutting each recording medium when the coating film of the recording medium is on the upper side and cutting each recording medium when the coating film is on the lower side. That is, when the coating film is on the upper side as in (a) at the time of cutting, the coating film is cut first by the tip of the round blade 41, so that the cut edge Fo becomes sharp, and therefore the coating film is cut. Since no collapse occurs, there is no generation of cutting dust. However, (b)
When the coating film is on the lower side as shown in the figure, the first cut by the tip of the round blade 41 is the surface of the PET support, and as the cutting proceeds, the PET 41 is gradually cut by the inclined portion 41a of the blade 41. As the support is pushed to the left and right in the figure, the PET support is stretched, and therefore the coating film thereon is also stretched, and the PET support is cut under strain and further from the PET support side. So
The cut Fb has a large number of irregularities, and the coating film easily collapses and falls off at the irregularities, and this becomes dust and is scattered.
Such a peeled film may be generated in the recording apparatus as dust foreign matter, and a recording defect may be generated due to adhesion of dust.

Here, recording defects due to dust will be described. Recording defects due to dust adhesion are classified into two types. One is a recording defect when dust adheres to the image receiving sheet (so-called “white spots” occur), and the other is a recording defect when dust adheres to the recording drum (so-called “white spot”). White ring "occurs.)

FIG. 6 is a diagram showing the reason why the white spot, which is the former recording defect, occurs. In the figure, R is an image receiving sheet fixed on the recording drum surface (hatched portion), T is a toner sheet fixed thereon, and X is dust. As shown in FIG.
Is present, dust X causes poor adhesion between the toner sheet T and the image receiving sheet R, resulting in image loss (so-called “white spots”) in the range of arrow A in the figure.

FIG. 7 is a diagram showing the reason why a white ring, which is the latter recording defect, occurs. In the figure,
R is an image receiving sheet fixed on the recording drum surface (hatched portion), T is a toner sheet fixed thereon,
X is garbage. As shown in the figure, when dust X is present on the recording drum, the image receiving sheet R follows the shape of the dust X because it is strongly sucked by a large number of suction holes, but the toner sheet T only sucks around the periphery. Since the toner sheet T and the image receiving sheet R adhere to each other at the center where the dust X exists, the toner sheet T and the image receiving sheet R adhere to each other. Clearance C between T and image receiving sheet R
Can be formed in a ring shape, and therefore, transfer cannot be performed in the gap C, and a white portion just occurs in a ring shape (a so-called “white ring”) in the range of the arrow B in the figure.

Therefore, in order to prevent cutting dust from being generated even when the cutting device cuts the recording medium P, it is sufficient to cut the recording medium P with the coating film facing upward. However, such a measure cannot be taken by the conventional recording apparatus. The reason is described below. 8 and 9 show a conventional recording apparatus. 8, the image receiving sheet R is supplied and fixed on the recording drum 34 from the recording medium supply unit 32, and then the toner sheet T is supplied and fixed on the image receiving sheet R on the recording drum 34 from the recording medium supply unit 32. . In this case, it is assumed that the round blade 11 of the cutting device is located above the sheet, the fixed blade 12 is located below the sheet, and the recording drum 34 is rotating in the direction of the arrow shown in the figure. Incidentally, in order to irradiate the toner sheet coating film from the transparent PET support side on the back side of the toner sheet T with the exposure head and record the latent image on the coating film (image receiving layer) on the front side of the image receiving sheet R, the recording drum 34 is used. The coating film of the image receiving sheet R is on the opposite side (that is, the front side, that is, the toner sheet side) of the recording drum 34, while the coating film of the toner sheet T is on the recording drum 34 side (that is, the image receiving sheet side). is necessary.

Therefore, when the recording apparatus of FIG. 8 is verified, FIG.
In the recording apparatus having the recording drum 34 rotating in the direction of the arrow as shown in FIG. 3, in order for the coating film of the toner sheet T to be directed to the recording drum 34 side, the coating surface of the toner sheet T is applied to the round blade 11 side. It should just be done. In FIG. 8, since the application surface of the toner sheet T is actually applied to the round blade 11 side, no dust is generated in this case. However, in order for the coating film of the image receiving sheet R to face the recording drum side, the coating surface of the image receiving sheet R must be applied to the fixed blade 12 side. In this case, dust is generated for the above-described reason. It became a thing. That is, it can be seen that the cutting device of the conventional recording apparatus shown in FIG. 8 gives priority to the toner sheet T and does not consider the image receiving sheet R.

On the other hand, the opposite can be said for the conventional recording apparatus of FIG. That is, in FIG. 9, if the round blade 11 of the cutting device is located above the sheet and the fixed blade 12 is located below the sheet, and the recording drum 34 is rotating in the direction of the arrow shown in FIG. In order for the film to be directed to the side opposite to the recording drum, the coating surface of the image receiving sheet R only needs to be coated on the round blade 11 side, and in this case, no dust is generated. However, in order for the coating film of the toner sheet T to face the recording drum side, the toner sheet T
Must be applied to the fixed blade 12 side,
In this case, dust is generated for the above reason.
That is, it can be seen that the cutting device of the conventional recording apparatus shown in FIG. 9 gives priority to the image receiving sheet R and does not consider the toner sheet T.

As described above, the conventional recording apparatus can give priority to either the image receiving sheet R or the toner sheet T, but cannot respond to the other sheet. Cutting dust is likely to occur, causing the recording defect described above. The present invention solves the above drawbacks, and provides a recording apparatus that can be considered for either the image receiving sheet R or the toner sheet T, and therefore provides a recording apparatus that does not generate cutting dust and does not generate recording defects. Is to do.

[0021]

In order to achieve the above object, a recording apparatus according to a first aspect of the present invention supplies an image receiving sheet onto a recording drum with the support of the image receiving sheet facing the recording drum. Fixing, supplying and fixing a toner sheet on the image receiving sheet with the toner coating film side on the image receiving sheet side, and then recording an image or the like by transferring the toner of the toner sheet onto the image receiving sheet by laser light. The recording device described above is characterized in that the recording drum is rotatable in a direction opposite to one direction, and the supply directions of the image receiving sheet and the toner sheet are set opposite to each other. According to the above configuration, both application surfaces of the image receiving sheet and the toner sheet can be directed to the round blade side, and cutting dust does not occur. The invention according to claim 2 is
It is characterized in that a supply path and a sheet cutting device for the image receiving sheet onto the recording drum and a supply path and a sheet cutting device for the toner sheet onto the recording drum are separately provided. With the above specific configuration, it is possible to realize a recording apparatus capable of directing both application surfaces of the image receiving sheet and the toner sheet to the round blade side. Further, the invention according to claim 3 partially shares a supply path of the image receiving sheet onto the recording drum and a supply path of the toner sheet, and includes a sheet cutting device in the common path supply path. A supply path switching device is provided near the common path supply path exit for switching between the supply path of the image receiving sheet onto the recording drum and the supply path of the toner sheet. With the above specific configuration, a plurality of supply paths can be shared and the number of cutting devices can be reduced to one, so that a recording device that contributes to downsizing and cost reduction can be obtained. According to a fourth aspect of the present invention, the image receiving sheet and the toner sheet are fixed such that the image receiving sheet and the toner sheet are supplied and fixed in opposite directions on the recording drum. It is characterized in that it is provided in the reverse direction. With the recording drum having the above configuration, the image receiving sheet and the toner sheet can be fixed to each other from opposite directions.

[0022]

FIG. 1 shows a recording apparatus according to a first embodiment of the present invention. In the drawing, R is an image receiving sheet supply unit, T is a toner sheet supply unit, and 34 is a recording drum. A front conveyance roller unit and a rear front conveyance roller are provided in a supply path from these supply units R and T to the recording drum 34. The sheet cutting device (round blade 11 and fixed blade 1)
2) is provided. The recording drum 34 is rotatable in one direction A and the opposite direction C. FIG. 1A shows the toner sheet T.
Is a diagram for explaining the operation when the supply operation of the image receiving sheet R is stopped and the supply operation of the image receiving sheet R is performed. The recording drum 34 is rotating in the direction of the arrow A (counterclockwise), and the image receiving sheet R is received from the roll. It can be seen that the film is pulled out with the film surface facing upward, and the round blade 11 cuts the image receiving film surface. FIG.
(B) is a diagram for explaining the operation when the supply operation of the image receiving sheet R is stopped and the supply operation of the toner sheet T is performed. The recording drum 34 is rotating in the direction of the arrow C (clockwise). It can be seen that the sheet R is pulled out from the roll with the image receiving film surface facing upward, and the round blade 11 cuts the image receiving film surface. As described above, when the recording apparatus according to the first embodiment of the present invention shown in FIG. 1 is used, the application surfaces of the image receiving sheet and the toner sheet can be directed to the round blade side, so that cutting dust does not occur, and Recording defects due to cutting dust are eliminated.

FIG. 2 shows a recording apparatus according to a second embodiment of the present invention. In the figure, R is an image receiving sheet supply unit,
T is a toner sheet supply unit, and 34 is a recording drum. A front conveyance roller unit and a rear front conveyance roller unit are arranged in a supply path from each of these supply units R and T to the recording drum 34, and a sheet is cut in the middle. A set of devices (round blade 11 and fixed blade 12) and a supply path switching device 80 are provided. And
The recording drum 34 is rotatable in one direction A and the opposite direction C. FIG. 2A stops the supply operation of the toner sheet T,
FIG. 4 is a diagram for explaining an operation when a supply operation of the image receiving sheet R is performed, in which the recording drum 34 is rotating in a direction of an arrow A (counterclockwise), and
4 is switched to the direction in which the sheet is supplied to the upper side.
Thus, the image receiving sheet R pulled out from the roll with the image receiving film surface facing upward can cut the coating film surface with the round blade 11. FIG. 2B is a diagram for explaining the operation when the supply operation of the image receiving sheet R is stopped and the supply operation of the toner sheet T is performed. The recording drum 34 is rotating in the direction of arrow C (clockwise). The supply path switch 80 is switched in the direction of supplying the sheet to the lower side of the recording drum 34. Thus, the coating film surface of the toner sheet T pulled out from the roll with the image receiving film surface facing upward can be cut by the round blade 11. Thus, the second embodiment of the present invention shown in FIG.
When the recording apparatus of the embodiment is used, each of the application surfaces of the image receiving sheet and the toner sheet can be directed to the round blade side by only one set of the cutting apparatus and the supply path switching device 80, so that cutting dust is generated. And recording defects due to cutting dust are eliminated.

In the above description, an example is shown in which the respective coating film surfaces of the image receiving sheet and the toner sheet are supplied upward.
The present invention is not limited to this, and the coating film surfaces of the image receiving sheet and the toner sheet are always directed downward, and the lower blade of the cutting device is a round blade and the upper blade is a fixed blade. It is also possible. In this case, the image receiving sheet may be supplied below the recording drum, and the toner sheet may be supplied above the recording drum. If the coating surfaces of the image receiving sheet and the toner sheet are always directed downward in this manner,
When used in a dusty environment or the like, dust hardly accumulates on the coating film surface, and recording defects due to dust do not occur.

FIG. 3 is a view for explaining the structure of the recording drum 34 shown in FIGS. 1 and 2. FIG. 3 (a) is a perspective view of the recording drum 34, and FIG. 3 (b) is a developed view of the recording drum 34. . In the drawing, the recording drum 34 can rotate in two directions, one direction A and the opposite direction C, as indicated by a double-headed arrow. Also, a large number of small circles on the outer periphery of the recording drum 34 indicate [00
06], the elongated ellipse is a sheet end suction groove. The sheet suction holes are originally small in diameter and large in number that cannot be shown, but here, the sheet suction holes are drawn larger than actual and are thinned out for easy understanding. If the inside of the recording drum 34 is evacuated by a suction device (not shown), the sheet conveyed to the surface of the recording drum 34 is fixed by suction on the recording drum 34. In the developed view of FIG. 3B, a two-dot chain line is an image receiving sheet fixed range. In this range, there is an image receiving sheet tip suction groove below in the figure, and a large number of sheet suction holes are scattered. The dashed line is the toner sheet fixing range, and the toner sheet fixing holes and the sheet suction holes which are oval between the dashed line and the two-dot chain line contribute to the fixing of the toner sheet. When the image receiving sheet is fixed to such a recording drum 34, the image receiving sheet is conveyed to the suction groove at the leading end of the image receiving sheet, and the recording drum 34 is rotated counterclockwise A while being evacuated.
(FIG. 3A), the image receiving sheet is
Can be fixed. Further, when the toner sheet is fixed on the image receiving sheet, the toner sheet is conveyed to the toner sheet leading end suction groove, and the recording drum 34 is rotated clockwise C (FIG. 3A) while evacuating. The toner sheet can be fixed to the recording drum 34. As described above, when the recording drum shown in FIG. 3 is used as the recording drum 34 shown in FIGS. 1 and 2, the image receiving sheet and the toner sheet can be easily and reliably fixed on the recording drum.

[0026]

As described above, according to the present invention, since the respective coating film surfaces of the image receiving sheet and the toner sheet can be on the same side, if the rotary blade of the cutter is provided on the coating film surface side,
Each coating film surface of the image receiving sheet and the toner sheet is sharply cut by one cutter, so that the coating film surface of one of the conventional sheets is not sacrificed.
Therefore, cut dust does not occur due to sharp cutting. Therefore, a beautiful image without dust defects can be recorded. In addition, when each of the coating films is conveyed with the surface thereof facing upward, the substrate is rubbed against the guide plate or the like during the conveyance, so that the coating film surface can be prevented from being scratched. Further, according to the present invention, since the respective coating film surfaces of the image receiving sheet and the toner sheet face downward, and the lower blade of the cutting device can be a round blade and the upper blade can be a fixed blade,
When using in an environment with a lot of dust, for example, if the coating surfaces of the image receiving sheet and toner sheet are directed downward, dust hardly accumulates on the coating film surface, and recording defects due to dust hardly occur. Become.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a recording apparatus according to a second embodiment of the present invention.

FIG. 3 is a diagram showing the recording drum of FIGS. 1 and 2;

FIG. 4 is a diagram illustrating a state in which a sheet-shaped recording medium is cut by a cutting device.

FIG. 5 is a conceptual diagram of a recording apparatus targeted by the present invention.

FIG. 6 is a diagram illustrating a problem of dust on an image receiving sheet.

FIG. 7 is a diagram illustrating a problem of dust on a recording drum.

FIG. 8 shows a conventional recording apparatus (toner sheet priority).

FIG. 9 shows a conventional recording apparatus (image receiving sheet priority).

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 cutting device 11 round blade 12 fixed blade 30 recording device 32 recording medium supply unit 34 recording drum 36 recording medium fixing / release mechanism 38 laminating mechanism 40 exposure head 42 peeling mechanism 44 paper feeding unit 46 laminating unit 48 fixing unit 50 peeling unit 52 Tray unit 54 Control unit 80 Supply path switcher A Counterclockwise C Clockwise P Recording medium R Image receiving sheet T Toner sheet H Book paper

Claims (4)

[Claims] 1. An image receiving sheet is supplied and fixed on a recording drum with the support side of the image receiving sheet facing the recording drum, and a toner sheet is supplied and fixed on the image receiving sheet with the toner coating film side on the image receiving sheet side. Then, in a recording apparatus for recording an image or the like by transferring the toner of the toner sheet onto the image receiving sheet with laser light, the recording drum is rotatable in one direction and the opposite direction, and the image receiving sheet And the supply direction of the toner sheet is set to be opposite to each other. 2. The image forming apparatus according to claim 1, further comprising: a supply path for supplying the image receiving sheet onto the recording drum and an image receiving sheet cutting apparatus; and a supply path for supplying the toner sheet onto the recording drum and a toner sheet cutting apparatus. 2. The recording apparatus according to claim 1, wherein: 3. A supply path for the image receiving sheet onto the recording drum and a supply path for the toner sheet are partially shared, and a sheet cutting device is provided in the common path supply path, and the common path supply path exit is provided. 2. The recording apparatus according to claim 1, further comprising a supply path switching device that switches a supply path of the image receiving sheet onto the recording drum and a supply path of the toner sheet. 4. An image receiving sheet tip fixing portion and a toner sheet tip fixing portion are provided on a recording drum in opposite directions so that the image receiving sheet and the toner sheet are supplied and fixed in opposite directions on the recording drum. A two-way fixed recording drum.