JPH03216673A - Image forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [1J aspect of the invention] (Industrial field in Icheon) The present invention relates to an image forming apparatus that is applied, for example, as an electronic copying machine.

(Prior Art) When copying a document using an electronic copying machine, for example, as shown in FIG. 10, an exposure lamp a scans light onto the document on a document glass b.

The light reflected from this original is reflected by the first to third reflection mirrors c.
, d, and e to a lens f, and further from this lens f to fourth to sixth reflecting mirrors g. The image is formed on the photoreceptor drum j via h, *.

The surface of the photosensitive drum j is charged by a charging charger k, and an electrostatic latent image of the document is formed by the image formation. This electrostatic latent image is sent to a developing device 1 by the rotation of the photosensitive drum j, and toner is supplied from the developing device 1.

On the other hand, at this time, the rotation of the take-out roller n of the paper feed cassette m takes out the sheets one by one, and the paper feed roller 0
is sent to the registration roller pair p. After the paper is aligned by the registration roller pair p, it is sent to an image transfer section between the photosensitive drum j and the transfer charger u, and the image is transferred thereto. The paper P on which this image has been transferred is peeled off from the photosensitive drum j by the action of the peeling charger V. Then, this peeled paper is sent to a fixing device W, where the image is fixed, and then the paper is discharged onto a paper tray y via a discharge port X.

By the way, during copying, the inside of the copying machine main body 101 becomes high temperature due to heat radiation from the fixing device W, the exposure system, etc. , copying machine body 1
The heat inside 01 is exhausted to the outside. The hot air inside the copying machine main body 101 is exhausted to the outside through an exhaust port 103 formed on the side surface of the copying machine main body 101, as shown in FIGS. 11 and 12.

(Problem to be Solved by the Invention) However, in the past, the hot air inside the copying machine main body 101 was exhausted to the outside from the exhaust port 103 on the side of the copying machine main body 101, so the exhaust air was blown directly onto the operator. It was making me feel uncomfortable.

Furthermore, wind noise is generated during exhaust, and driving noise within the copying machine main body 101 is emitted from the exhaust port, causing noise.

Furthermore, if there is a wall near the exhaust port 103, there is a problem in that the wall surface is stained with toner and the like that is blown out along with hot air.

SUMMARY OF THE INVENTION Therefore, the present invention provides an image forming apparatus that does not blow exhaust air from the apparatus body directly onto the operator, prevents wind noise and drive noise from being emitted, and does not stain walls, etc. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a housing that houses an image forming means for forming an image, a mounting table on which the housing is placed, and a The apparatus includes an exhaust means for discharging the air inside the housing, and a guide means for guiding the airflow exhausted by the exhaust means into the inside of the mounting table.

(Operation) The airflow discharged by the exhaust means is guided into the inside of the mounting table by the guide means, and then is discharged to the outside from the lower opening of the mounting table. This makes it possible to exhaust hot air inside the device body to the outside without providing an exhaust port on the side surface of the device body.

(Example) The present invention will be described below with reference to an example shown in the drawings.

FIG. 1 shows an electronic copying machine, in which reference numeral 1 denotes a main body of the copying machine. This copy body 1 is placed on the table 2.
It is placed on 1. A photosensitive drum 2 is provided in the copying machine main body 1 so as to be rotatable in the direction of the arrow, and a charger 3, an exposure section 4, and a developing device are arranged around the photosensitive drum 2 in order along the direction of rotation. 5a. 5bs transcription,
A peeling charger 6.7, a cleaning device 8 and a static eliminator 9 are provided.

A conveyance path 10 is provided approximately at the center of the copying machine main body 1, and this conveyance path 10 sequentially includes an ejection port, a roller 11a, a paper feed roller 1lb. Registration roller 1
2. The above transfer/peel charger 6.7, fixing device 13,
A discharge port 14 is provided.

A paper feed cassette 22a,
22b, and a paper discharge tray 23 is provided on the other side.

An exposure system 41 is provided on the upper side of the copying machine main body 1.

This exposure system 41 includes an exposure lamp 42 and a first reflection mirror 43 provided on a first carriage (not shown), and second and third reflection mirrors 44 provided on a second carriage (not shown). .45, a lens 46, and fourth to sixth reflecting mirrors 47, 48, and 49.

The first and second carriages are configured to reciprocate along a document glass 50 provided on the upper surface of the copying machine main body 1.

On the other hand, a line flow fan 51 as an exhaust means is provided on one side of the copying machine main body 1, and this life flow fan 51 is rotationally driven by a fan motor 51a.

As shown in FIGS. 2 to 4, the exhaust side of the life flow fan 51 is communicated with the inside of the mounting table 21 via a bifurcated duct 52 as a guide means. Preamble 6
Connection ports 53, 53 are provided on the upper surface of the mounting table 21,
The lower end of the duct 52 is connected to this connection port 53.53.

Further, as shown in FIG. 3, a roller 54 is attached to the lower end of the mounting table 21 to make it movable, and an opening 2]-11 is provided on the bottom surface. .

During image formation, the exposure system 41 exposes the document to light, and an image of the document is formed on the surface of the photoreceptor drum 2 . The surface of the photosensitive drum 2 is charged by a charging charger 3, and an electrostatic latent image of the document is formed by the image formation. This electrostatic latent image is sent to the developer 11 5a or 5b by the rotation of the photoreceptor drum 2.
Toner is supplied from b.

On the other hand, at this time, the paper feed cassette 22a or 22
The sheets are taken out one by one by the rotation of the take-out port-ra lla of b, and sent to the registration roller pair 12 by the rotation of the paper feed roller 1lb. The paper is this registration roller pair 1
After being aligned in step 2, it is sent to an image transfer section 4 between the photosensitive drum 2 and a transfer charger 6, where the image is transferred. The paper to which this image has been transferred is peeled off from the photosensitive drum 2 by the action of a peeling charger 7. Then, the peeled paper is sent to a fixing device 13, where the image is fixed, and then the paper is discharged onto a paper discharge tray 23 via a discharge port 14.

By the way, during this image formation, heat is released from the fixing device 13 or the exposure system 41, etc., and the inside of the copying machine main body 1 is in a high temperature state. As shown in the figure, the device body 1
As shown by the arrow, the air inside the line flow 7 and 51.
is sucked into and discharged. This line flow fan 51
As shown in FIGS. 8 and 9, the airflow discharged from the air is sent into the mounting table 21 through the duct 52.
After flowing downward within this a placement table 21, it is discharged to the outside from the lower end opening 21 of the placement table 21.

As described above, in order to guide the hot air inside the copying machine main body 1 into the mounting table 21 through the duct 52 and exhausting it to the outside from the lower end opening 21a of this mounting table 21, the copying machine main body 1
It is possible to exhaust air without having to provide an exhaust port on the side surface.

Therefore, the exhaust gas is not blown directly onto the operator, wind noise is not generated, and driving noise inside the copying machine body 1 is not emitted to the outside.Furthermore, even if there is a wall nearby, It won't get dirty with toner.

[Effects of the Invention] As described above, according to the present invention, the exhaust gas discharged from the apparatus main body is not blown directly onto the operator, thereby preventing the operator from feeling uncomfortable. Also,
Noise can be reduced without generating wind noise or emitting drive noise inside the device main body 1 to the outside. Furthermore, even if there is a wall nearby, there is no possibility of staining the wall with the developer.

[Brief explanation of drawings]

1 to 9 show an embodiment of the present invention, in which FIG. 1 is a schematic configuration diagram showing the inside of an electronic copying machine placed on a mounting table, FIG. 2 is a perspective view thereof, 3 is a configuration diagram showing the duct structure, FIG. 4 is a perspective view showing the duct connected to the mounting table, FIG. 5 is a perspective view showing the electronic copying machine placed a on the mounting table, and FIG. Figures 9 to 9 are explanatory diagrams showing the flow of air when the exhaust fan rotates, Figures 10 to 12 show a conventional example, and Figure 10 is a schematic configuration diagram showing the inside of an electronic copying machine. , FIG. 11 is a perspective view thereof, and FIG. 12 is an external perspective view showing the electronic copying machine placed on a mounting table. 1... Copying machine main body (apparatus main body), 21... Mounting stand,
21a... Lower end opening, 51... Line flow fan (exhaust means), 52... Duct (guiding means).

Claims (1)

[Claims] A casing that accommodates an image forming means that forms an image, a mounting table on which the casing is placed, an exhaust means for discharging the air inside the casing, and an airflow exhausted by the exhaust means from the mounting table. An image forming apparatus characterized by comprising a guide means for guiding the image inside.