JP2000247550A - Image forming device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the space around the apparatus main body because the apparatus main body is compact and can be accessed from only one direction. A sheet 3 is fed from a paper feed tray 12a provided at a lower portion of an apparatus main body 10 to a main transport path 19 extending vertically.
While the sheet 1 is conveyed and passes through the image forming unit 13, an image is formed on the sheet 31. The paper 31 is discharged from the upper end of the main transport path 18 on the discharge side to the discharge tray 16 provided on the paper feed tray 12a by the supply / discharge roller 18d. A manual paper feed tray 17 is provided on the paper discharge tray 16, and the paper 31 on the manual paper feed tray 17 is moved by a supply / discharge roller 18 d to the main transport path 18.
And is conveyed to the main conveyance path 18 located upstream of the image forming unit 13 through the sub conveyance path 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus in which a sheet is supplied to an image forming section provided in an apparatus main body and an image is formed on the sheet in the image forming section.

[0002]

2. Description of the Related Art In an image forming apparatus such as a facsimile, a printer, and a copying machine, paper in a paper feed tray provided in the apparatus main body is usually supplied to an image forming section in the apparatus main body.
After an image is formed on a sheet by the image forming unit, the sheet is discharged onto a discharge tray supported outside the apparatus main body. Also, a manual paper feed tray is provided outside the apparatus main body, and the paper placed on the manual paper feed tray is supplied to the image forming section of the apparatus main body, and the paper on which the image is formed by the image forming section is removed. It is also configured to be discharged to a paper discharge tray.

For example, Japanese Patent Application Laid-Open No. 6-250455 discloses a device in which a plurality of paper feed trays are provided inside an apparatus main body, a paper discharge tray is provided on one side of the apparatus main body, and a manual paper feed tray is provided on the other side. Each supported copier is disclosed.

Japanese Patent Laid-Open Publication No. Hei 10-231105 discloses an image forming apparatus in which a manual paper feed tray is supported on the rear side of the apparatus main body, and a paper discharge tray is supported on the front side of the apparatus main body. ing.

[0005]

In each of the image forming apparatuses disclosed in these publications, a manual paper feed tray and a paper discharge tray are supported on respective opposite sides of the apparatus body. In addition, there is a problem that the occupied area is increased by the amount of the manual paper feed tray and the paper discharge tray protruding from the apparatus main body. Further, as described above, the manual paper feed tray and the paper discharge tray are provided on the opposed side surfaces of the apparatus main body, so that the user can
Since it is necessary to access from two opposite directions of the apparatus main body, each side of the apparatus main body also needs a space required for accessing the manual paper feed tray and the paper discharge tray.

An object of the present invention is to solve such a problem. It is an object of the present invention to reduce the area occupied by the compact size and to access the apparatus body only in one direction. Therefore, an object of the present invention is to provide an image forming apparatus which does not require an extra space.

[0007]

According to the image forming apparatus of the present invention, paper is supplied to a main transport path from a paper feed tray provided inside the apparatus main body, and an image is formed on the paper transported in the main transport path. An image forming apparatus configured to be ejected to the outside of an apparatus main body after an image is formed by a forming unit, wherein a sheet ejected from a main transport path is provided. A tray and a paper feeding end provided above the paper discharge tray so as to be continuous with an end of the main conveyance path on the paper discharge side. A manual paper feed tray, and a sub-conveyance path provided to convey the paper supplied to the end of the main conveyance path on the paper discharge side to a main conveyance path portion located upstream of the image forming unit. Is rotated so that the paper on which the image is formed is discharged from the end of the main transport path to the paper discharge tray. Together, characterized by comprising a supply and discharge roller rotates to supply the paper on the manual paper feed tray into the end of the main transport path, a.

The paper feed tray is provided at a lower portion of the apparatus main body, and a paper discharge tray and a manual paper feed tray are arranged above the paper feed tray.

A scanner unit for reading an image of a document is provided above the paper discharge tray and the manual paper feed tray.

A first supply / discharge switch for guiding a sheet on which an image is formed to an end of the main transport path on the sheet discharge side is provided at a branch portion of the main transport path between the sheet discharge side and the sub-transport path. A guide is provided, and the first supply / discharge switching guide is switched so as to guide the sheet supplied into the end on the sheet discharge side of the main transport path to the sub transport path.

A second supply / discharge switching guide for guiding the sheet discharged by the supply / discharge roller to the discharge tray is provided between the supply / discharge roller and the manual paper feed tray. The discharge switching guide is switched to guide the paper on the manual paper feed tray into the main transport path.

The supply / discharge roller is configured to hold a sheet discharged onto a sheet discharge tray and to convey the sheet to an end of the main conveyance path on the sheet discharge side.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing an example of an embodiment of the image forming apparatus of the present invention. The image forming apparatus has a rectangular parallelepiped apparatus main body 10 and a document transport mechanism 20 provided above the apparatus main body 10. The apparatus main body 10 is formed with a concave portion 11 which is open at the front and left and right sides at the center of the front in the vertical direction. The lower part of the apparatus main body 10 is a paper feed unit 12 having a paper feed cassette 12a (see FIG. 2) in which paper on which an image is formed is stored. On the side, an image forming unit 13 for forming an image on a sheet conveyed upward from the sheet feeding unit 12 is provided. On the upper side of the image forming unit 13, a scanner unit 14 that reads an image of a document placed on a document table 14 a (see FIG. 2) provided on the upper surface of the apparatus main body 10 horizontally forward from the image forming unit 13. It is provided in a protruding state. The document table 14a of the scanner unit 14 is covered with a document transport mechanism 20 that can be opened and closed.

A paper discharge tray 16 for discharging paper on which an image is formed by the image forming unit 13 is provided in a concave portion 11 provided above a front portion of the paper feeding unit 12 in the apparatus main body 10. . The paper discharge tray 16 is slightly inclined with respect to the horizontal so that the front portion is located upward, and the image forming section 1
3 is supported on the entire surface. Above the paper discharge tray 16, a manual paper feed tray 17 on which the paper is placed when the paper is manually supplied to the image forming unit 13 is provided. The manual feed tray 17 is detachably supported on the entire surface of the image forming unit 13 in a substantially horizontal state.

FIG. 2 is a schematic structural view of the inside of the apparatus main body 10 in this image forming apparatus, and FIG. 3 is a scanner section 14 provided on the upper part of the apparatus main body 10 and a document transport provided above the scanner section 14. FIG. 2 is a schematic configuration diagram showing each mechanism 20. As shown in FIG. 3, a plurality of originals 32 set on an original mounting table 20 a of the original transport mechanism 20 are sequentially placed on an original table 14 a provided on an upper surface of the scanner unit 14 by a pickup roller 21. Each document is conveyed toward a pair of upper and lower document feed rollers 22, and is conveyed by the document feed roller 22 into the main document feed path 23. The document 32 transported into the main document transport path 23 is
The document is conveyed onto a document table 14 a covered by a document cover 25 by a pair of upper and lower document PS rollers 24. The document 32 conveyed on the document table 14 a is configured such that an image is read by the scanner unit 14, and the read document 32 is guided to a pair of upper and lower document discharge rollers 26 by a document guide 27. Then, the document is discharged onto a document discharge tray 28 by a document discharge roller 26.

The document discharge roller 26 is rotatable in the forward and reverse directions.
The document 32 is rotated in the reverse direction while holding the rear end of the document 2, so that the document 32 is transferred via the document guide 27 to the document reversing path 29.
To be transported. The document 32 conveyed to the document reversing path 29 is supplied to the document PS roller 24 through the document reversing path 29, and conveyed to the document table 14a by the document PS roller 24 in a state where the document 32 is turned upside down. .

The scanner section 14 provided on the upper part of the apparatus main body 10 is provided with a light source 14b and a first reflecting mirror 14c which are integrally scanned along a document table 14a. While the light source 14b is scanned from the home position at the front of the scanner unit 14 along the platen 14a,
Light is emitted toward the document 32 placed on the document table 14a, and the light reflected by the document 32 is scanned by the first reflecting mirror 14c integrated with the light source 14b. Reflected forward.

The scanner section 14 has a pair of second and third reflecting mirrors 14d and 14d for reversing the direction of the light reflected by the first reflecting mirror 14c by 180 degrees.
e is integrally provided further in front of the apparatus main body 10 than the light source 14b. The second reflecting mirror 14d and the third reflecting mirror 14e include a light source 14b and a first reflecting mirror 14c.
Is scanned along the document table 14a in the same direction as the light source 14b and the first reflecting mirror 14c at half the scanning speed. The light reflected by the third reflecting mirror 14e is applied to the CCD 14g, which is a photoelectric conversion element, via the imaging lens 14f, and the image of the document 32 is read.

As shown in FIG. 2, a photosensitive drum 13a is provided in an image forming section 13 provided at a rear portion of the apparatus main body 10. The photosensitive drum 13a is indicated by an arrow A in FIG.
It rotates in the direction shown by. A laser writing unit 13b that stores image data of a document read by the CCD 14g is provided above and in front of the photosensitive drum 13a.

FIG. 4 is a schematic diagram showing the configuration of the image forming section 13. The photosensitive drum 13a is configured such that image information is written by the modulated laser light oscillated from the laser writing unit 13b in a state where the photosensitive layer on the surface is charged by the charger 13c. Is irradiated, an electrostatic latent image is formed on the surface of the photosensitive drum 13a. The electrostatic latent image formed on the photosensitive drum 13a is developed with toner by the developing device 13d, and a toner image is formed on the surface of the photosensitive drum 13a.

At the rear of the apparatus main body 10 behind the photosensitive drum 13a, there is provided a main transport path 18 extending vertically in proximity to the photosensitive drum 13a. 31 is transported upward. The upper end of the main transport path 18 is bent forward so as to discharge the transported sheet 31 into the concave portion 11 of the apparatus main body 10.

Behind the main transport path 18, there is provided a sub-transport path 19 extending in the vertical direction at an appropriate distance from the main transport path 18. The upper portion of the sub-transport path 19 is branched from the end of the main transport path 18 on the sheet discharge side, and a first supply / discharge switching guide 18c is provided at the branch portion.

The lower end of the sub-transport path 19 is
It is curved in an arc shape toward the main transport path 18 for transporting the paper 31 to 3a, and is connected to the main transport path 18 at a portion upstream of the photosensitive drum 13a in the transport direction of the paper 31.

The lower end of the main transport path 18 is close to the rear of the paper feed cassette 12a disposed in the paper feed unit 12 provided at the lower part of the apparatus main body 10.
A pair of paper feed rollers 18a is provided. Paper feed unit 1
2, a pickup roller 12b that feeds the sheets 31 stacked in the sheet feeding tray 12a one by one to a sheet feeding roller 18a above the rear end of the sheet feeding tray 12a.
Is provided. The paper 31 supplied to the paper feed roller 18a by the pickup roller 12b is
8 is conveyed upward toward the photosensitive drum 13a.

A pair of registration rollers 1 is provided on the main transport path 18 above a connection position with the lower end of the sub transport path 19.
8b are provided. Further, a transfer unit 13e is provided on the main transport path 18 so as to face the photosensitive drum 13a above the registration roller 18b, and a pair of fixing rollers 13f is provided above the transfer unit 13e. The paper 31 conveyed upward in the main conveyance path 18 is moved by the registration rollers 18b.
The toner image on the photoconductive drum 13a is conveyed toward the photoconductive drum 13a at a predetermined timing synchronized with the rotation of the photoconductive drum 13a.
Transferred to 1. The sheet 31 to which the toner image has been transferred is heated and pressed while passing between the pair of fixing rollers 13f, and is fixed to the sheet 31.

The toner remaining on the surface of the photosensitive drum 13a on which the toner image has been transferred onto the sheet 31 is removed by the cleaning device 13j.

A pair of supply / discharge rollers 18d is provided at the upper end of the main transport path 18 on the discharge side of the paper 31 so as to be rotatable forward and backward. First supply / discharge switching guide 18c provided at a branch of main transport path 18 and sub transport path 19
Is a state in which the sub-transport path 19 is closed, the fixing roller 13f and the supply / discharge roller 18d are continuously discharged through the main transport path 18, and the main transport path 18 is closed to supply and discharge the sub-transport path 19. The roller 18d is rotated so as to be in a continuous paper feeding state. The sheet 31 on which the toner image has been fixed by the fixing roller 13f is guided by the first supply / discharge switching guide 18c which has closed the sub-conveyance path 19 and is in the sheet discharge state, and is conveyed to the supply / discharge roller 18d.

The supply / discharge roller 18d is disposed above the rear end of the paper discharge tray 16 provided in the concave portion 11 of the apparatus main body 10, and above the rear of the paper discharge tray 16 in front of the supply / discharge roller 18d. Is provided with a second supply / discharge switching guide 18e which is turned in the vertical direction. Further, a pair of manual paper feed rollers 18f is provided in front of the second paper supply / discharge switching guide 18e, and a manual paper feed roller provided above the paper output tray 16 in front of the manual paper feed rollers 18f. The rear end of the tray 17 is provided continuously. The manual paper feed roller 18f serves to feed the paper 31 placed on the manual paper feed tray 17 to the second supply / discharge switching guide 1.
8e.

With the toner image fixed, the main transport path 18
The paper 31 conveyed inside to the supply / discharge roller 18d is conveyed toward the second supply / discharge switching guide 18e by the normal rotation of the supply / discharge roller 18d. Second supply / discharge switching guide 1
8e is a sheet 3 conveyed by the supply / discharge roller 18d.
A sheet discharge state in which the sheet No. 1 is guided onto a lower sheet discharge tray 16;
The paper 31 conveyed by the manual paper feed roller 18f is rotated so as to be switched to a paper supply state in which the paper 31 is guided by the manual paper supply / discharge roller 18f. Second supply / discharge switching guide 18
When e guides the paper 31 on the manual paper feed tray 17 to the manual paper supply / discharge roller 18f, the manual paper supply / discharge roller 18f is driven to rotate in the reverse direction, and is operated by the second supply / discharge switching guide 18e. The guided sheet 31 is conveyed toward a first sheet supply / discharge switching guide 18c provided at the sheet discharge side end of the main conveyance path 18 and a branch portion of the sub conveyance path 19, and is guided by the first supply / discharge switching guide 18c. Sub conveyance path 1
Guided inside 9.

Above the sub-conveying path 18, a pair of first conveying rollers 19a for conveying the sheet 31 having entered the sub-conveying path 18 downward is provided. A pair of second transport rollers 19b for transporting the sheet 31 downward is provided at an appropriate distance below the lower portion 19a.

The operation of the image forming apparatus having such a configuration is described below.
This will be described based on the flowchart shown in FIG. First,
It is confirmed whether the paper 31 on which an image is to be formed is fed in the manual feed mode or in the automatic feed mode (see step S1 in FIG. 5, the same applies hereinafter).
Then, in the case of the automatic paper feed mode instead of the manual paper feed mode, the pickup roller 12b of the paper feed unit 12 is driven, and one sheet 31 accommodated in the paper feed cassette 12a is moved to the paper feed roller 18a. And is transported upward in the main transport path 18 toward the photosensitive drum 13a by the paper feed roller 18a. The sheet 31 conveyed in the main conveyance path 18 is stopped by the registration roller 18b (Step S2).

On the other hand, in the manual paper feed mode, as shown in FIG.
7, a second supply / discharge switching guide 18e provided below is rotated downward to switch to a horizontal sheet feeding state, and a first supply / discharge switching guide 18e provided at a branch portion between the main conveyance path 18 and the sub conveyance path 19 is provided. The supply / discharge switching guide 18c is also rotated downward to switch to a horizontal sheet feeding state (step S3). In this state, the manual feed roller 18f is driven, and the supply / discharge roller 18d is driven to rotate in the reverse direction.
The paper 31 on the manual paper feed tray 17 is guided by a second supply / discharge switching guide 18e and is supplied to a supply / discharge roller 18d.
Will be guided inside. Paper 31 guided to sub-conveying path 19
Is transported downward in the sub-transport path 19, enters the main transport path 18 from the curved lower end thereof, and is directed to the registration roller 18b in a state where the inside of the main transport path 18 is directed to the photosensitive drum 13a. (Step S4).

Thereafter, it is checked whether an image is to be formed on one side or both sides of the sheet 31 (step S5). If an image is to be formed only on one side of the sheet 31, a process for forming an image on one side of the sheet 31 is performed (step S6). The one-sided image forming process on the paper 31 is performed by first placing the document transport mechanism 2 on a document table 14 a provided in the scanner unit 14 of the apparatus main body 10.
When the original 32 is set manually or manually, the original 32 is
The image data read by the CCD 14g is read by the laser writing unit 13b.
Is stored.

When the image data is stored in the laser writing unit 13b, the photosensitive drum 13a is rotated, an image is written on the photosensitive drum 13a by the laser writing unit 13b, and a toner image is formed by the developing unit 13d. It is formed.

At this time, the sheet 31 stopped by the registration roller 18b is conveyed upward toward the photosensitive drum 13a by rotating the registration roller 18b in synchronization with the rotation of the photosensitive drum 13a. You.
When the sheet 31 is conveyed in synchronization with the rotation of the photosensitive drum 13a, the toner image on the photosensitive drum 13a is transferred to the transfer device 1
By 3e, it is transferred to the sheet 31 to be conveyed. The toner image is fixed on the sheet 31 to which the toner image is transferred while passing through the fixing roller 13f.

When the single-sided image forming process is performed in this manner, as shown in FIG. 7, the first supply / discharge switching guide 18 provided at the branch between the main conveyance path 18 and the sub conveyance path 19 is provided.
c is rotated upward so that the main transport path 18 is continuous with the supply / discharge roller 18d, is switched to the discharge state, and the second supply / discharge switching guide 18e on the discharge tray 16.
The sheet 31 on which the toner image is fixed is conveyed to the supply / discharge roller 18d by the first supply / discharge switching guide 18c. Then, the toner supply / discharge roller 18 that rotates forward
By d, the sheet 31 on which the toner image is fixed is guided by the second supply / discharge switching guide 18e, and is discharged onto the discharge tray 16 (step S8).

Thereafter, it is confirmed whether or not an image should be continuously formed on the next sheet 31 (step S).
9) When forming images continuously, step S1
And the same operation is repeated. If there is no need to continuously form images, the image forming operation ends.

On the other hand, when images are to be formed on both sides of the sheet 31 (step S5), a double-sided image forming process is performed (step S10). FIG. 8 is a flowchart of the duplex image forming process. In this case, a document 32 having images provided on both sides is placed on a document table 20 a of the document transport mechanism 20, and the document 32 is transported to a document table 14 a of the scanner unit 14, and 14
Light source 14b and first to third reflecting mirrors 14c
The image is read by the CCD 14g by the scanning of １４14d. The data of the image read by the CCD 14g is stored in the laser writing unit 13b. Next, after the document 32 on the document table 14a is once discharged onto the document table 20a by the document discharge roller 26, the document discharge roller 26 reversely rotates the document 32 through the document reversing path 29 and up and down. In an inverted state, the sheet is conveyed onto the document table 14a. Then, the data of the image on the other side (back side) of the inverted document 32 is similarly stored in the laser writing unit 13b (see step S11 in FIG. 8, the same applies hereinafter).

Thereafter, the photosensitive drum 13a is rotated, and an image is written on the photosensitive drum 13a based on the image data of the back surface of the document 32 stored second (later) in the laser writing unit 13b. And the toner is developed. At this time, the registration roller 18b is rotated in synchronization with the rotation of the photosensitive drum 13a, and the sheet 31 stopped by the registration roller 18b is transported upward toward the photosensitive drum 13a. Paper 3
1 is conveyed in synchronization with the rotation of the photosensitive drum 13a, the toner image on the photosensitive drum 13a is transferred to the transfer device 13e.
Is transferred onto the conveyed sheet 31. The toner image is fixed on the sheet 31 to which the toner image has been transferred while passing through the fixing roller 13f (Step S12).

At this time, the first supply / discharge switching guide 18c
The main transport path 18 is switched to a paper discharge state continuous with the supply / discharge roller 18d, and the second supply / discharge switching roller 18e is rotated upward to switch to the paper discharge state (step S13), and an image is formed. The sheet 31 transported along the main transport path 18 is guided by the second supply / discharge switching guide 18e by the normal rotation of the supply / discharge roller 18d, and is discharged onto the discharge tray 16. When the rear end of the sheet 31 is held by the supply / discharge roller 18d (step S14), the first supply / discharge switching guide 18c is switched to the sheet supply state (step S1).
5). Thereafter, the supply / discharge roller 18d is reversed, and the sheet 31 discharged onto the discharge tray 16 is guided by the first supply / discharge switching guide 18c and is conveyed to the sub-conveyance path 19 (step S16).

The paper 31 transported in the sub-transport path 19 enters the main transport path 18 from the lower end of the sub-transport path 19 in a state where the sheet 31 is turned upside down, and is stopped by the registration rollers 18b.

Thereafter, in synchronization with the rotation of the photosensitive drum 13a, an image is written on the photosensitive drum 13a based on the image data first written into the laser writing unit 13b, and the toner is developed. The registration roller 18b is synchronized with the rotation of the drum 13a.
Is rotated to transfer and fix the toner image on the back surface of the sheet 31 where no image is formed (step S1).
7). Thereby, an image is formed on both sides of the sheet 31.

When the image forming process for both sides of the sheet 31 is completed, the first supply / discharge switching guide 18c is rotated upward to switch to the paper discharge state, and the second supply / discharge switching guide 18e is rotated upward. Is switched to the discharged state (step S7 in FIG. 5). And the main transport path 18
Is conveyed to the first supply / discharge roller 18d, and the second supply / discharge roller 18d
Guided by the supply / discharge switching guide 18e, the discharge tray 16
It is discharged upward (step S8 in FIG. 5).

In this way, when the paper 31 having the image formed on both sides is discharged onto the paper discharge tray 16, it is confirmed whether it is necessary to continuously form an image (step S9 in FIG. 5). When forming images continuously, the process returns to step S1 and the same operation is repeated. If there is no need to continuously form images, the image forming process ends.

[0045]

According to the image forming apparatus of the present invention,
A manual paper feed tray is provided on a paper output tray that is provided continuously at the end of the main transport path where the paper on which the image is formed is discharged. Since the paper is conveyed from the end to the image forming unit via the sub-conveyance path, the paper discharge tray and the manual paper feed tray are arranged one above the other, and the whole is compact and downsized. . Moreover, since the discharge tray and the manual feed tray can be accessed from the same direction, the space around the apparatus main body can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view illustrating an example of an embodiment of an image forming apparatus of the present invention.

FIG. 2 is a schematic configuration diagram of an apparatus main body in the image forming apparatus.

FIG. 3 is a schematic configuration diagram of a main part of the image forming apparatus.

FIG. 4 is a schematic configuration diagram illustrating a main part of an apparatus main body in the image forming apparatus.

FIG. 5 is a flowchart for explaining the operation of the image forming apparatus.

FIG. 6 is a schematic configuration diagram of a main part for describing an operation of the image forming apparatus.

FIG. 7 is a schematic configuration diagram of a main part for describing an operation of the image forming apparatus.

FIG. 8 is a flowchart showing a subroutine for explaining the operation of the image forming apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Device main body 11 Concavity 12 Paper supply part 12a Paper supply tray 13 Image forming part 13a Photoconductor drum 13b Laser writing unit 13c Charger 13d Developing device 13e Transfer device 13f Fixing roller 14 Scanner part 14a Document table 16 Discharge tray 17 Manual feed Paper tray 18 Main transport path 18b Registration roller 18c First supply / discharge switching guide 18d First supply / discharge roller 18e First supply / discharge switching guide 18f Manual feed roller 19 Sub transport path 20 Document transport mechanism 31 Paper 32 Document

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinji Oishi 22-22, Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (72) Inventor Yoshiyo Hiramoto 22-22, Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (72) Inventor Atsushi Saito 22-22 Nagaikecho, Abeno-ku, Osaka City, Osaka Prefecture Inside Sharp Corporation (72) Minoru Tomi 22-22 Nagaikecho, Abeno-ku, Osaka City, Osaka Sharp Stock Company F-term (reference) 3F053 BA03 BA12 BA18 BA27 LA03 LB01 3F063 AA01 AB03 AC01 AD01 BA02 BB07 BC04 3F100 AA01 BA24 CA10 CA12 EA13

Claims (6)

[Claims] An image forming section supplies paper to a main transport path from a paper feed tray provided in an apparatus main body, and forms an image on a sheet transported in the main transport path. An image forming apparatus configured to be discharged to the outside of the main body, wherein a discharge tray provided to place sheets discharged from a main conveyance path, and an upper portion of the discharge tray, A manual paper feed tray on which paper supplied at the end of the main transport path on the paper discharge side is provided so as to be continuous with the end of the main transport path on the paper discharge side, and A sub-conveying path provided to convey the sheet supplied to the end on the sheet discharge side to a main conveying path located upstream of the image forming unit; The paper is rotated so that it exits from the edge to the output tray, and the paper An image forming apparatus characterized by comprising a supply and discharge roller rotates to supply into the end of the main transport path, a. 2. The image forming apparatus according to claim 1, wherein the paper feed tray is provided at a lower portion of the apparatus main body, and a paper discharge tray and a manual paper feed tray are arranged above the paper feed tray. 3. The image forming apparatus according to claim 1, wherein a scanner unit that reads an image of a document is provided above the discharge tray and the manual feed tray. 4. A first feeder for guiding a sheet on which an image is formed to an end of the main transport path on the sheet discharge side at a branch portion between the sheet discharge side end of the main transport path and the sub-transport path. A discharge switching guide is provided, and the first supply / discharge switching guide is
The image forming apparatus according to claim 1, wherein the image forming apparatus is switched to guide a sheet supplied into an end of the main conveyance path on a sheet discharge side to a sub conveyance path. 5. A second supply / discharge switching guide for guiding a sheet discharged by the supply / discharge roller to a discharge tray is provided between the supply / discharge roller and a manual paper feed tray,
The image forming apparatus according to claim 1, wherein the second supply / discharge switching guide is switched so as to guide the paper on the manual paper feed tray into the main transport path. 6. The sheet feeding apparatus according to claim 1, wherein the supply / discharge roller holds the sheet discharged onto a sheet discharge tray and conveys the sheet into an end of the main conveyance path on the sheet discharge side. Image forming device.