JP2000293001A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a guide guiding recording paper at the front side and the back side of a transfer position as an integrated structure and also to use a resin which hardly has heat resistance. SOLUTION: A carrying guide 27 guiding the recording paper at the front side and the back side of the transfer position is formed of a nearly linearly shaped single member so as to guide the recording paper 18 by passing from the lower side of the transfer position to an upper side through the transfer position, and a fixing part 30 is arranged on the upper side of the carrying guide 27. Thus, heat from the fixing part 30 is hardly transmitted to the carrying guide 27 on the lower side, and a general resin having the heat resistance of about 80 deg.C is used as the material of the carrying guide 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus such as a printer, a facsimile, a copying machine, etc., which forms a toner image on a photoreceptor and transfers the toner image to recording paper.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, in a recording apparatus of this type, a sheet feeding cassette 2 mounted on the bottom of an apparatus body 1 and a recording sheet 3 fed from the sheet feeding cassette 2 are changed in direction. Roller 4, which feeds the recording paper 3 substantially horizontally, a pre-transfer guide 5 and a post-transfer guide 6 which are provided to guide the recording paper 3 substantially horizontally, a toner cartridge 8 having a photoconductor 7, and a photoconductor 7 A laser scanning unit 9 for forming an electrostatic latent image on the recording medium, a transfer roller 10 for transferring the toner image formed on the photoconductor 7 to recording paper, and a fixing unit 12 disposed downstream of the post-transfer guide 6. Equipped,
The toner image is transferred to the recording paper 3 fed from the paper feed cassette 2 by the transfer roller 10, fixed by the fixing unit 12, and discharged.

Here, the fixing section 12 has a fixing roller 13 heated to a high temperature for melting and fixing the toner adhering to the recording paper. Is transmitted above and besides mainly by air convection. Therefore, the fixing unit 12 is disposed at a position (for example, about 120 mm) far away from the photoconductor 7 so as not to excessively heat the photoconductor 7. Also,
The post-transfer guide 6 provided adjacent to the fixing unit 12 is heated by the heat from the fixing unit 12 and may reach 100 to 120 ° C., so that it is not warped or melted. It is made of a heat-resistant resin, for example, polycarbonate. Since this heat-resistant resin is expensive, it is inconvenient in terms of cost to make the entire conveyance guide before and after the transfer position. Therefore, conventionally, the pre-transfer guide 5 and the post-transfer guide 6 are conventionally formed as separate parts. Inexpensive resin is used only for the pre-transfer guide 5.

[0004]

However, if the transport guides before and after the transfer position are formed by two components (a pre-transfer guide and a post-transfer guide), not only the number of components increases but also a joint portion between the two is required. There has been a problem that the structure becomes complicated and the entire conveyance guide becomes large.

On the other hand, when the transfer guides before and after the transfer position are integrally formed, as described above, it is necessary to use a special heat-resistant resin as the whole material, which causes a problem that the cost is increased.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a recording apparatus which can integrally form a conveyance guide before and after a transfer position without using a special heat-resistant resin. Aim.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is configured such that the recording paper travels substantially vertically from bottom to top on a conveyance path of the recording paper before and after the transfer position, and guides the recording paper. And a guide member for guiding the recording paper from below the transfer position to above through the transfer position and formed of a single member having a substantially linear shape. Are arranged. According to the present invention, since the fixing unit is provided above the transport guide, heat from the fixing unit is transmitted upward and in the lateral direction, but is not transmitted much below.
The temperature around the conveyance guide located below the fixing unit is 80 °
C, and a conveyance guide for guiding the recording paper before and after the transfer position is formed by a single member.
A general resin having a certain degree of heat resistance can be used without any trouble. Thus, according to the present invention, the transport guides before and after the transfer position can be integrated without using expensive heat-resistant resin, so that the number of parts can be reduced and the structure of the transport guide can be simplified because the conventionally used coupling member is unnecessary. Therefore, the size and size of the recording apparatus can be reduced, and the size of the entire recording apparatus can be reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment of the present invention, recording means for forming a toner image on a photoreceptor, transfer means for transferring the toner image to recording paper, and heat welding of the toner to the recording paper. In a recording apparatus having a fixing unit and the like, a paper supply unit for supplying recording paper is disposed below a transfer position by the transfer unit, and recording paper fed from the paper supply unit passes through the transfer position from below the transfer position. In this configuration, a substantially linear conveyance guide formed of a single member is disposed so as to be guided upward, and a fixing unit is disposed above the conveyance guide. By arranging the fixing unit above the conveyance guide, the material of the conveyance guide does not require much heat resistance, and therefore, it is possible to use a low-cost general resin, and it is also possible to use the resin before and after the transfer position. Since the conveyance guide for guiding the recording paper is integrated, the structure of the conveyance guide can be simplified and downsized, and the cost and size of the recording apparatus can be reduced.

In another embodiment of the present invention, the transport guide is inserted into the apparatus main body from above by inserting the transport guide into the bottom of the above-described substantially linear and single-piece transport guide. A positioning means is provided for the mounting, and a mounting member is provided on the side surface of the apparatus main body so that the mounting member can be screwed on the apparatus body from above. With this configuration, when attaching the transport guide to the apparatus main body, the transport guide is inserted from above the apparatus main body, positioned at a predetermined position by the positioning means, and then the mounting member is screwed from above to attach the transport guide. Since these operations are performed from above, the operations can be easily performed. As a result, the mounting operation of the transport guide can be extremely facilitated.

In still another embodiment of the present invention, the above-described substantially linear, single-piece transfer guide has a concave portion opened on the side surface and fixed to the apparatus main body above the concave portion. To provide a mounting member,
The apparatus main body is provided with a convex support member that is inserted into a concave portion of the side surface of the transport guide and supports the mounting member, and the mounting member is placed on the supporting member and can be screwed from above. Things. With this configuration, when the transport guide is attached to the apparatus main body, the support member provided on the apparatus main body enters the recess formed on the side surface of the transport guide,
Since the mounting member on the upper side of the concave portion is screwed to the support member, the screwing position of the conveyance guide can be set to a position inward of the side surface of the conveyance guide, and therefore, the conveyance guide is secured to secure the screw fixing area. There is no need to increase the width of
Therefore, the width of the transport guide can be reduced, and the width of the entire recording apparatus can be reduced.

In still another embodiment of the present invention, the transport guide is inserted into the bottom of the transport guide formed in a substantially linear shape and formed of a single member from above with respect to the apparatus main body. A positioning means for fitting is provided, and a guide for positioning the positioning means at a predetermined position by being brought into contact with a rear wall in the apparatus main body is provided on the back surface. With this configuration, when the transport guide is mounted in the apparatus main body, simply inserting the transport guide into the apparatus main body and pressing the guide on the back against the rear wall in the apparatus main body, the positioning means on the bottom of the transport guide is positioned. The transport guide can be easily inserted into the predetermined position even when the insertion space of the transport guide in the device main body is narrow and the bottom face is not visible. It can be attached, and the insertion operation of the transport guide can be performed smoothly.

In still another embodiment of the present invention, a registration roller is mounted on the apparatus main body side, and the above-described transport guide formed in a substantially linear shape and formed of a single member is pressed by a spring so as to be pressed against the registration roller. By holding the pinch roller movably, a positioning means for fitting to the apparatus main body is provided on the bottom surface of the transport guide, and the rear surface is brought into contact with a rear wall in the apparatus main body by contacting the rear surface. A guide for positioning the positioning means at a predetermined position is provided, and when the conveyance guide is inserted into a predetermined position in the apparatus, the pinch roller is pressed against the registration roller, and the guide guide of the conveyance guide is generated by the reaction force. Is pressed against a rear wall in the apparatus main body, and the positioning guide is guided to a predetermined position by inserting a conveyance guide in that state. Than it is. With this configuration, when the conveyance guide is inserted into the apparatus main body, the pinch roller automatically comes into contact with the registration roller, and the guide guide of the conveyance guide is utilized by using a reaction force of a spring pressing the pinch roller against the registration roller. The transport guide can be pressed against the rear wall in the apparatus main body, so that the transport guide can be inserted while being naturally pressed against the rear wall in the apparatus main body, and the insertion and positioning of the transport guide can be performed more easily.

A preferred embodiment of the present invention shown in the drawings will be described below. FIG. 1 is a schematic sectional view showing a schematic configuration of a recording apparatus according to an embodiment in which the present invention is applied to a facsimile apparatus, and FIG. 2 is a schematic perspective view showing the recording apparatus with a conveyance guide taken out. Reference numeral 15 denotes an apparatus main body that accommodates each element described below. In this specification, the apparatus main body means not only a casing forming the outer shape of the apparatus, but also includes an internal chassis, a rear chassis, and the like fixed to the casing. Reference numeral 16 denotes a paper feed cassette which can be attached to and detached from the bottom of the apparatus main body 15, reference numeral 17 denotes a paper feed roller for feeding out a recording paper 18 from the paper feed cassette 16, and reference numeral 19 denotes a recording paper 18.
Is a sheet feeding guide for guiding the sheet upward, and these constitute a sheet feeding section. Reference numeral 20 denotes a registration roller provided at a predetermined position in the apparatus main body 15, and supplies the recording paper 18 to the transfer position at a proper timing.

Reference numeral 21 denotes a toner cartridge, a photosensitive member 22, a charger for uniformly charging the photosensitive member 22, a toner hopper containing toner, a developing device for applying toner to the latent image on the photosensitive member 22, and a photosensitive device. A waste toner unit and the like for removing and storing residual toner on the body 22 are provided. The toner cartridge 21 is disposed at an intermediate position of the apparatus main body 15 so that the photosensitive member 22 is oriented horizontally. A laser scan unit (LSU) 24 scans the surface of the photoconductor 22 with a laser beam to form a latent image.

Reference numeral 25 denotes a transport unit, which is disposed to face the photosensitive member 22 and transfers a toner image of the photosensitive member 22 to a recording sheet; And a transfer guide 27 and the like formed in a substantially linear shape and formed of a single member and arranged so as to be guided upward through the transfer position. Transport guide 27
Holds a transfer roller 26 rotatably. As can be clearly understood from FIG. 2, a rib-shaped pre-transfer guide 27a and a post-transfer guide 27b are formed so as to be located above and below the transfer roller 26, respectively. The recording paper is guided before and after the transfer position. As described above, since the member for guiding the recording paper before and after the transfer position is constituted by the conveyance guide 27 having a single structure, the structure of the conveyance guide 27 is simplified and reduced in size. The transport guide 27 is made of an inexpensive general-purpose resin, for example, polystyrene. The transport guide 27 also movably holds a pinch roller 28 that is pressed by a spring so as to be pressed against the registration roller 20 provided on the apparatus main body 15 side. The pinch roller 28 is configured to be held so as not to fall off the transport guide 27 even when there is no registration roller 20 in front of the pinch roller 28, such as when the transport guide 27 is taken out of the apparatus. I have.

In FIG. 1, reference numeral 30 denotes a fixing unit disposed above the conveyance guide 27, which includes a case 31, a fixing roller 32, a discharge roller 33, and the like disposed therein. It is configured to enter from below and discharge obliquely upward.

In the recording apparatus having the above-described configuration, the paper feed cassette 1
The recording paper 18 fed from the paper feed roller 17 by a paper feed roller 17 is sent upward by a registration roller 20 and a pinch roller 28, and a toner image is formed on a photosensitive member 22 of a toner cartridge 21 in parallel with the conveyance of the recording paper 18. , Recording paper 18
Is passed between the photosensitive member 22 and the transfer roller 26, the toner image is transferred to the recording paper 18. Thereafter, the recording paper 18 is sent to the upper fixing unit 30, and the toner image is heated by the fixing unit 30. It is fused and fixed, and is discharged out of the apparatus.
During this recording operation, heat is released from the high-temperature fixing unit 30 to the surroundings. However, the heated air tends to flow upward, and the recording paper 18 is conveyed upward. The upward flow of air is also caused by the recording paper 18, so that heat from the fixing unit 30 is not transmitted much downward. For this reason, even in the vicinity of the fixing unit of the conveyance guide 27 provided immediately below the fixing unit 30, 80 °
C, and the transport guide 27 formed of a general-purpose resin such as polystyrene does not melt or distort, and can exhibit sufficient durability. In addition, since the photoconductor 22 is also provided below the fixing unit 30, the photoconductor 22 is hardly heated by the fixing unit 30.
The distance between the photoreceptor 22 and the fixing unit 30 is smaller (for example, 60 m) as compared with the conventional horizontal arrangement shown in FIG.
m) and the recording device can be miniaturized.

Next, the mounting structure of the transport unit 25 will be described. 3 is a schematic perspective view showing the rear side of the transport guide 27, FIG. 4 is a schematic front view showing a state in which the transport unit 25 is attached to the apparatus main body 15, and FIGS.
FIG. 5 is a schematic cross-sectional view for explaining an operation of attaching 5 to a predetermined position in the apparatus main body 15. 1 to 7, a space 35 for accommodating the transport unit 25 is provided in the apparatus main body 15.
A bottom wall 36 for supporting the bottom surface of the transport unit 25 is provided at the bottom, and a rear wall 37 of a rear chassis is provided at the back. A hole 38 for positioning is formed in the bottom wall 36. On the other hand, transport unit 2
5, the bottom wall 3 of the apparatus body 15
A projection 40 is provided as positioning means for fitting into the positioning hole 38 of No. 6. Thus, the transport guide 27
Is inserted into the apparatus main body 15 from above, whereby the protrusion 40 can be inserted into the hole 38 and the bottom position of the transport guide 27 can be positioned. Instead of providing the projections 40 as positioning means on the transport guide 27, a positioning hole may be formed, and a projection fitted into the hole may be provided on the apparatus main body 15 side.

On the side surface of the space 35 of the apparatus body 15, a convex support member 42 for fixing the transport guide 27 is provided so as to protrude from the side surface, and a screw hole is opened on the upper surface thereof. I have. On the other hand, on the side of the transport guide 27,
A concave portion 43 into which the support member 42 can be inserted is provided to open outward, and a mounting member 44 for fixing to the apparatus main body is formed above the concave portion 43. The mounting member 44 is formed with a hole 45 penetrating vertically.
The mounting member 44 is placed on the supporting member 42, a screw 46 is passed through the hole 45 from above, and screwed into a screw hole of the supporting member 42 therebelow, so that the screw can be fixed. Thus, the concave portion 43 is formed on the side surface of the transport guide 27,
If the support member 42 is inserted and held in the concave portion 43, as shown in FIG.
7, the mounting member 44 can be positioned within the width W1 while securing the width W1 (for example, the width required for mounting the transfer roller 26).
The width W2 of the side wall on the fifth side can be minimized, and the overall width of the device can be reduced. The dimensions and the mounting position of the support member 42 formed on the side surface of the space 35 in the apparatus main body 15 may cause interference when the transport guide 27 is inserted obliquely as shown by an arrow A as shown in FIG. The support member 42 is set so as to be inserted into the concave portion 43 without any trouble when the support member 42 is rotated as shown by an arrow B in FIG.

A pair of guides 48 are provided on the back of the transport guide 27. As shown in FIGS. 5 and 6, the guide guide 48 is brought into contact with the rear wall 37 in the apparatus main body 15 and when the transport guide 27 is raised almost vertically,
It is made in such a size that it can be positioned so that the positioning projection 40 at the lower end matches the positioning hole 38. Therefore, as shown in FIG.
The guide 40 is inserted in a state in which the guide 40 is in contact with the rear wall 37 while the support 40 is inclined, and when the protrusion 40 reaches the bottom wall 36, the transport guide 27 is raised as shown in FIG. 38 and can be inserted.

Next, the mounting operation of the transport unit 25 having the above configuration will be described. When mounting the transport unit 25, the transfer roller 27 and the pinch roller 2
8 and the like, and the transport unit 25 is
As shown in (1), the device is inserted obliquely from above into the apparatus main body 15 as shown by an arrow A. During this process, the pinch roller 28 pressed by the spring comes into contact with the registration roller 20 provided on the apparatus main body 15 side, and is pressed against the registration roller 20 by the spring. The transport guide 27 is inserted with the guide guide 48 on the rear surface pressed against the rear wall 37. Then, after the projection 40 at the lower end of the transport guide 27 abuts against the bottom wall 36, the transport guide 27 is raised almost vertically as shown in FIG. In order to position the guide 27, the projection 40 comes to a position corresponding to the hole 38 of the bottom wall 36, and is inserted into the hole 38 as shown in FIG. When the transport guide 27 is raised almost vertically as shown in FIG. 6, the support member 42 provided on the apparatus main body side is inserted into the concave portion 43 (see FIG. 4) on the side surface of the transport guide 27. As shown in FIG. 7, after the projection 40 is inserted into the hole 38, the mounting member 44 of the transport guide 27 is placed on the support member 42.
Is in a state of riding. Thereafter, the conveyance guide 27 is fixed at a predetermined position by screwing from above.

As described above, the transport unit 25 of this embodiment
Merely performs an operation of inserting the device obliquely from above the device body and then raising the device vertically.
Can be positioned and inserted into the hole 38 of the bottom wall 36, can be easily inserted into a predetermined position even in a narrow place, and then only screwed from above, so that the mounting work is extremely easy. Can be performed.

In the above embodiment, as can be clearly understood from FIG.
Although the support member 42 on the apparatus main body side is inserted and held in the concave portion 43, the concave portion 43 may be omitted. For example, as shown in FIG. 8, a mounting member 44 is provided so as to protrude from the side surface of the transport guide 27, and the mounting member 44 is mounted on a supporting member 42 provided on the apparatus main body 15 side and screwed. Is also good. With this configuration, as compared with the embodiment shown in FIG. 4, the maximum width W3 of the transport guide 27 is increased by the length of the mounting member 44 protruding on both sides, and the width of the device is required to be wider. When inserting the transport unit 25 into the apparatus main body 15, it is not necessary to insert the transport unit 25 diagonally as shown in FIG. 5, but it is sufficient to simply insert the transport unit 25 vertically from above, and the mounting work can be further facilitated.

[0024]

As is apparent from the above description, according to the present invention, the recording paper transport path before and after the transfer position is configured so that the recording paper travels from bottom to top, and the transport guide for guiding the recording paper is provided. A configuration in which the recording paper is formed of a single member having a substantially linear shape to guide the recording paper upward from below the transfer position through the transfer position, and a fixing unit is disposed above the conveyance guide. As a result, heat from the fixing unit is not transmitted much to the lower conveyance guide, and therefore, the conveyance guide that guides the recording paper before and after the transfer position is formed as a single member, and inexpensive ordinary resin is used for the material. Even if it is used, it can be used without melting or deforming, the number of parts can be reduced, the structure of the transport guide can be simplified and downsized, the cost can be reduced, and the entire recording device can be downsized. The figure It has the effect that it is also possible.

Here, on the bottom surface of the above-mentioned transport guide, positioning means for fitting the transport guide into the apparatus main body by inserting the transport guide into the apparatus main body from above is provided. If a mounting member that can be screwed is provided, when mounting the transport guide to the apparatus main body, the transport guide is inserted from above the apparatus main body, positioned at a predetermined position by the positioning means, and then the mounting member is screwed from above. By stopping the transport guide, the transport guide can be mounted. Therefore, the transport guide can be mounted only by work from above, and the effect of extremely facilitating the mounting operation can be obtained.

[0026] Further, an outwardly opened concave portion is formed on the side surface of the transport guide, and an attachment member for fixing the device to the apparatus main body is provided above the concave portion. When provided with a convex support member that is inserted into the concave portion and supports the mounting member, and the mounting member is placed on the support member and can be screwed from above,
The screwing position of the transport guide can be set to a position inward of the side surface of the transport guide, whereby the width of the transport guide can be reduced, and the width of the entire recording apparatus can be reduced.

A positioning means is provided on the bottom surface of the transport guide so that the transport guide is inserted into the apparatus main body from above. The positioning means is fitted to the apparatus main body. When the guide is provided to position the positioning means at a predetermined position, the conveyance guide is inserted into the apparatus main body, and the guide is pressed against a rear wall in the apparatus main body, thereby positioning the bottom of the conveyance guide. Can be positioned at a predetermined position in the apparatus main body and fitted, and even if the insertion space for the conveyance guide in the apparatus main body is narrow and the bottom surface is not visible, the conveyance guide can be easily attached to the predetermined position. Therefore, the effect that the insertion operation of the transport guide can be easily performed can be obtained.

Further, in addition to the above configuration, a registration roller is mounted on the apparatus body side, and a pinch roller pressed by a spring so as to be pressed against the registration roller is movably held on the conveyance guide. When inserting the transport guide into a predetermined position in the apparatus main body at the time of mounting, the pinch roller is pressed against the registration roller, and the guide of the transport guide is pressed against the rear wall in the apparatus main body by the reaction force, Accordingly, the transport guide can be inserted while being naturally pressed against the rear wall in the apparatus main body, and an effect that the insertion operation of the transport guide can be more easily performed is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a schematic configuration of a recording apparatus according to an embodiment in which the present invention is applied to a facsimile apparatus.

FIG. 2 is a schematic perspective view showing the recording apparatus shown in FIG. 1 in a state where a conveyance guide is taken out.

FIG. 3 is a schematic perspective view showing a rear side of a transport guide provided in the recording apparatus of FIG. 1;

FIG. 4 is a schematic front view showing a state in which a transport unit is attached to the apparatus main body in the recording apparatus of FIG.

FIG. 5 is a schematic sectional view showing a state in which the transport unit is being mounted on the apparatus main body.

FIG. 6 is a schematic cross-sectional view showing a state where the transport unit is inserted into the apparatus main body and is raised vertically.

FIG. 7 is a schematic cross-sectional view showing a state where the transport unit is attached to a predetermined position of the apparatus main body.

FIG. 8 is a schematic front view of the same portion as FIG. 4 showing another embodiment of the present invention.

FIG. 9 is a schematic sectional view showing a schematic configuration of a conventional recording apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 15 apparatus main body 16 paper feed cassette 17 paper feed roller 18 recording paper 20 registration roller 21 toner cartridge 22 photoreceptor 24 laser scan unit 25 transport unit 26 transfer roller 27 transport guide 28 pinch roller 30 fixing unit 32 fixing roller 33 discharge roller 35 space 36 Bottom wall 37 Rear wall 38 Positioning hole 40 Projection 42 Support member 43 Depression 44 Mounting member 46 Screw 48 Guide

Claims (5)

[Claims] A recording unit that forms a toner image on a photoreceptor, a transfer unit that transfers the toner image onto a recording sheet, a paper feeding unit that supplies the recording sheet below a transfer position by the transfer unit, A substantially linear, single-piece transport guide arranged to guide the recording paper fed from the paper feed section upward from below the transfer position through the transfer position; and above the transport guide. And a fixing unit disposed in the recording device. 2. A recording means for forming a toner image on a photoreceptor, a transfer means for transferring the toner image to a recording paper, a paper supply unit for supplying the recording paper below a transfer position by the transfer means, A substantially linear, single-piece transport guide arranged to guide the recording paper fed from the paper feed section upward from below the transfer position through the transfer position; and above the transport guide. And a device main body for accommodating each of these elements. The transport guide is fitted on the bottom surface of the device main body by inserting the transport guide into the device main body from above. A recording apparatus comprising: a positioning member for performing a positioning operation; and a mounting member on a side surface of the supporting member provided on the apparatus main body side, which can be screwed from above. 3. A recording means for forming a toner image on a photoreceptor, a transfer means for transferring the toner image to a recording paper, a paper feeding unit for supplying the recording paper below a transfer position by the transfer means, A substantially linear, single-piece transport guide arranged to guide the recording paper fed from the paper feed section upward from below the transfer position through the transfer position; and above the transport guide. And a device main body for accommodating each of these elements, wherein the transport guide has a concave portion opened to the outside on the side surface and is fixed to the device main body above the concave portion. On the other hand, the apparatus main body includes a convex support member that is inserted into a concave portion of a side surface of the transport guide and supports the mount member, and mounts the mount member on the support member. Can be screwed from above A recording apparatus characterized by having a simple configuration. 4. A recording means for forming a toner image on a photoreceptor, a transfer means for transferring the toner image to recording paper, a paper feeding unit for supplying the recording paper below a transfer position by the transfer means, A substantially linear, single-piece transport guide arranged to guide the recording paper fed from the paper feed section upward from below the transfer position through the transfer position; and above the transport guide. And a device main body for accommodating these elements, and the transport guide has positioning means on the bottom surface for fitting the device guide by inserting the transport guide from above. And a guide on the back surface for positioning the positioning means at a predetermined position by contacting the rear wall in the apparatus main body. 5. A recording means for forming a toner image on a photoreceptor, a transfer means for transferring the toner image to recording paper, a paper feeding unit for supplying the recording paper below a transfer position by the transfer means, A substantially linear, single-piece transport guide arranged to guide the recording paper fed from the paper feed unit from below the transfer position to above through the transfer position, and below the transfer position. A registration roller provided at a fixed position, a pinch roller movably held by the conveyance guide and pressed by a spring so as to be pressed against the registration roller, and a fixing unit disposed above the conveyance guide, An apparatus main body for accommodating each of these elements, wherein the transport guide has positioning means for fitting the apparatus guide by inserting the transport guide from above on the bottom surface, and mounting means on the rear face. A guide guide for positioning the positioning means at a predetermined position by abutting the rear wall of the mounting main body, and when inserting the transport guide into a predetermined position in the apparatus, the pinch roller is moved to the registration position. A recording apparatus, wherein the positioning guide is guided to a predetermined position by being pressed against a roller, and a guide of the conveyance guide being pressed against a wall inside the apparatus by a reaction force thereof, and inserting the conveyance guide in this state.