JP2591491Y2 - Electrophotographic equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus having image forming means utilizing electrophotography.

[0002]

2. Description of the Related Art Conventionally, an electrophotographic apparatus is provided with an enclosure for defining the outer periphery of the apparatus, through which an internal structure is partitioned from the outside and protected from the outside.

[0003]

Here, in the conventional electrophotographic apparatus, the enclosure covers the whole and has an upper surface and a side surface which are respectively opened, and an upper portion which removably closes an upper opening of the enclosure body. It is composed of a panel and a side panel for opening and closing the side opening of the enclosure body.
By opening this upper panel upward, the image reading mechanism can be maintained and inspected, and by opening the side panel to the side, the print mechanism can be maintained and inspected. Is set.

[0004] In such a conventional structure, the enclosure body is set so as to cover the entire internal structure as described above, and conversely, it is necessary to attach the enclosure body until assembly of the internal structure is completed. There is a possibility that the degree of freedom in assembling work may be impaired, and improvement has been demanded. In addition, if a failure occurs that cannot be repaired simply by opening the upper panel or the side panel, the enclosure body must be removed, which greatly reduces the workability in repair. Problems have been pointed out.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an electrophotographic apparatus capable of improving work efficiency during an assembling operation. Another object of the present invention is to provide an electrophotographic apparatus capable of improving the workability of repair by eliminating the need to remove the entire enclosure when repairing the internal structure. .

[0006]

According to a first aspect of the present invention, there is provided an electrophotographic apparatus comprising: an enclosure defining an outer surface of the apparatus; and a main plate for dividing an inner space of the enclosure into upper and lower parts. It is provided with. The enclosure is located below the main plate and has an open upper surface, a middle housing is located above the main plate and has open upper and lower surfaces, and is located above the middle housing and has an open lower surface. The upper housing is divided into three parts. Upper housing is middle how
It is configured to be able to swing open and close with respect to jing. Soshi
The photosensitive drum and developing means are
Attached to the top of the main plate so that it is surrounded by
When the upper housing is opened, the photosensitive drum and the current
It is configured to allow access to the imaging means.
In addition, laser scanning that forms a latent image on the photosensitive drum
Unit is surrounded by the lower housing.
It is attached to the lower surface of the main plate.

Thus, an electrophotographic apparatus according to claim 1
According to, simply opening the upper housing
Access to the ram and developer
Can be repaired without removing the
Workability is improved. Also open the upper housing
Even if the laser scanning unit does not move,
Positional relationship between photosensitive drum and laser scanning unit
Does not change.

Further , according to the electrophotographic apparatus of the present invention,
And a leg protruding below the lower housing.
The main frame is supported by the lower frame.
Therefore, after assembling the lower frame to the main plate
Therefore, even before assembling the lower housing,
Assembling the user scanning unit on the main plate
Can be opened. In other words, the degree of freedom during work increases
There is an effect that.

According to a third aspect of the present invention, there is provided an electrophotographic apparatus.
The enclosure that defines the outer surface of the
Middle housing with open lower and upper surfaces
Jing and upper housing with open bottom
Configured in a split state, middle upper housing
It can swing open and close with respect to the housing. Picture
The photosensitive drum and the developing unit, which are components of the image forming unit,
It is housed in the middle housing and forms a latent image on the photosensitive drum.
The resulting laser scanning unit is lower housing
Housed in

[0010]

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electrophotographic apparatus according to an embodiment of the present invention will be described below in detail with reference to the accompanying drawings, in which the present invention is applied to a facsimile apparatus.

[Explanation of the Overall Configuration] As shown in FIG. 1, the facsimile apparatus 10 of this embodiment automatically reads and reads the image information of the transmission original in which a plurality of sheets are set at one time. The image information is transmitted to the facsimile machine on the receiving side using a telephone line,
Further, the image information transmitted from the facsimile machine on the partner transmission side is transferred to a built-in paper (in this embodiment, cut plain paper) via an electrophotographic method using a laser scanning method (image data). ). On the other hand, the facsimile machine 10
Is configured to have a so-called electronic copying function capable of copying (image formation) image information read from a document on a built-in sheet. Further, the facsimile machine 1
Reference numeral 0 is also configured to have a so-called printer function that can transfer (image formation) image information transmitted from, for example, an information processing apparatus to a built-in sheet via a connection line other than a telephone line.

The facsimile apparatus 10 has a main plate 1 disposed substantially parallel to a mounting surface thereof.
2, a print mechanism 14 mounted on the upper surface of the main plate 12 and performing the above-described image forming function, and pivotally supported by the rear end of the main plate 12 so as to swing with respect to the main plate 12. A possible swing frame 16,
An image reading mechanism 18 arranged on the upper surface of the swing frame 16 and having the above-described image reading function, and a rear end rotatably supported at an intermediate portion of the swing frame 16,
A control panel 20 swingable with respect to the main swing frame 16, lower frames 22a and 22b fixed to the left and right sides of the lower surface of the main plate 12, and extending in the front-rear direction, respectively; 22
a, 22b, and is attached to the lower surface of the main plate 12, and
And a laser scanning unit 24 having a function of forming a latent image on the outer peripheral surface of a photosensitive drum (to be described later), and fixed to the front and rear ends of the lower surfaces of the lower frames 22a and 22b, respectively, on a mounting surface (not shown). And four legs 26 to be placed.

[Explanation of Enclosure 28] Further, as shown in FIGS. 2 and 3, the facsimile apparatus 10 has an enclosure 2 for entirely defining the outer surface thereof.
8 is provided. In this embodiment, the enclosure 28 is disposed so as to surround the periphery of the space sandwiched by the lower frames 22a and 22b (that is, the portion below the main plate 12).
And a lower housing 30 disposed below the lower housing 2, continuously disposed immediately above the lower housing 30, disposed so as to surround the print mechanism 14, and disposed above the main plate 12. A middle housing (printer housing) 32 and an upper fixed to the swing frame 16 so as to be continuously disposed immediately above the printer housing 32 and to openably close an upper opening thereof. The housing 34 is divided into three parts. The control panel 20 described above is used.
Is pivotally supported at the rear edge of the front opening so as to openably close the front opening formed at the front of the upper housing 34.

As described above, the enclosure 28 that defines the outer surface of the facsimile machine 10 is connected to the lower housing 3.
0, printer housing 32, and upper housing 3
Since the internal structure is completely assembled, the enclosure 28 can be assembled in a state irrelevant to the internal structure, thereby improving the workability of assembling the facsimile apparatus 10. Can be done. In addition, as shown in FIG. 4, the leg 26 described above has a substantially rectangular bottom surface 4 of the facsimile device 10.
5 and 6, they are fixed to the lower surfaces of the lower frames 22a and 22b, respectively, as shown in FIGS. That is, in the facsimile apparatus 10, during the assembly thereof, the enclosure 28
Even when the lower housing 30 is not attached (especially, the lower housing 30), the main plate 12 is still mounted on the assembly table (not shown) via the legs 26 fixed to the lower surfaces of the lower frames 22a and 22b attached to the lower portion thereof. It is placed in a stable state.

The lower frames 22a, 22a
4 and 6, each leg 26 is inserted into a through hole 30a formed of a stupid hole formed in the lower housing 30 in a state in which the lower housing 30 is mounted on the lower housing 30 as shown in FIGS. It is configured to be taken out downward. As a result, in a state where the facsimile machine 10 is mounted on the assembly table, its weight is basically received by the main plate 12 via the lower frames 22a and 22b, and is transferred to the enclosure 28 including the lower housing 30. Has no effect. Therefore, no unnecessary load (own weight) is applied to the enclosure 28, and there is no risk of deformation due to receiving the load. In addition, the thickness can be reduced, and the overall weight can be reduced. .

In particular, although the details will be described later, the laser scanning unit 24 includes a main plate 1 as shown in FIG.
2 is set so as to be attached to the lower surface of the main plate 12 so as to show the lower surface arrangement state. As shown in FIG. 6, the laser scanning unit 24 has a part thereof (specifically, a port for taking out a laser beam for exposing an image onto a photosensitive drum, which will be described later) protruding toward the upper surface of the main plate 12. It is set as follows. Here, if the leg 26 is attached to the lower surface of the lower housing 30 and the lower housing 30 is configured to receive a load via the leg 26, the leather scanning unit 24 will be mounted unless the lower housing 30 is assembled in advance. It is difficult to assemble, and the work order is greatly restricted,
Workability will be extremely deteriorated. However, in this embodiment, since the legs 26 for receiving the load are fixed to the lower frames 22a and 22b in a state independent of the lower housing 30, the leather scanning unit 24 is attached to the main plate 12. After the lower frames 22a and 22b have been assembled, the lower frames 22a and 22b can be assembled to the lower surface of the main plate 12 at any time, so that the degree of freedom in workability is increased and workability can be improved.

On the other hand, in the center of the rear portion of the upper housing 34, as shown in FIGS. 2 and 3, a paper feed cassette 36 is inserted, and a paper feed cassette mounting port 34a also serving as a transfer paper take-in port is provided. In addition, a document taking-in port 34b into which a document to be transmitted is taken is formed immediately before the mounting port 34a. Although not described, the sheet cassette 36 is configured so that a large number of sheets of a predetermined size are collectively stored therein. Further, on the front surface of the printer housing 32, a paper discharge port 32a for discharging the paper on which the image information has been transferred is formed on the lower surface in a state positioned below, and a reading operation is performed above the paper discharge port 32a. A document discharge port 32b for discharging the transmission document after the completion is formed. As shown in FIGS. 1 and 2, the front surface of the lower housing 30 receives a sheet discharged from the sheet discharge port 32a and a discharge port for receiving a transmission document discharged from the document discharge port 32b. A paper tray 38 is detachably attached. On the other hand, as shown in FIG. 2, a pair of guide portions 40a and 40b are provided in the above-described document inlet 34b so as to be movable in the width direction of the transmitted document according to the size of the transmitted document. The tray 40 is detachably attached.

On the upper surface of the control panel 20, various operation buttons 20a are provided, and a display window 20b having a liquid crystal display device for displaying predetermined information to an operator is provided. I have. Here, an upper housing release button 42 is provided on the right side of the front surface of the control panel 20. The upper housing release button 42 is rotatably attached to the swing frame 16, and is rotated so as to push up the main frame 12 of the swing frame 16.
As a result, the swinging frame 16 and the upper housing 34 attached to the swinging frame 16 can be rotated upward as shown in FIG. Thereby, the upper opening of the printer housing 32,
In other words, the upper surface of the printing mechanism 14 is opened over substantially the entire surface, so that the operation of removing the paper jammed during the conveyance and the maintenance of each mechanism constituting the printing mechanism 14 can be easily performed.

On the other hand, a control panel release button 44 is disposed immediately to the left of the upper housing release button 42 and adjacent thereto. The control panel release button 44 is rotatably attached to the control panel 20. By rotating the control panel release button 44 so as to depress it, the locked state of the control panel 20 to the swing frame 16 is released. As shown in FIG. 8, the control panel 20 can rotate upward. Thereby, the upper housing 34
The front opening of the image reading mechanism 18, that is, the upper surface of the image reading mechanism 18 is opened over substantially the entire surface, so that the operation of removing the jammed document in the middle of the conveyance and the maintenance of each mechanism constituting the image reading mechanism 18 can be easily performed. You can do it. As shown in FIG. 9, a front opening 30b communicating with the front internal space in the lower space surrounded by the lower housing 30 is formed on the front surface of the lower housing 30 described above. The front opening 30b is provided with the front blind cover 30.
c (shown in FIG. 7) to be openably closed.
In addition, as will be described in detail later in this front internal space,
An adjustment board 46 for changing and adjusting, for example, a DC resistance value, a capacitance, and the like in accordance with a standard of each country in the world is housed. By removing the front cover 30c, the DC resistance value, the capacitance, and the like of the adjustment board 46 can be adjusted and set in accordance with the standard of the country to be shipped.

On the other hand, as shown in FIG. 3, a rear opening 30d communicating with the rear internal space in the lower space is formed in the rear surface of the lower housing 30. The rear opening 30d is openably closed by a rear blind cover 30e. As shown in FIG. 6, a pair of left and right board guide rails 48 and 50 are provided in the rear internal space.
Are attached to the lower surfaces of the lower frames 22a and 22b in a state where they extend in the front-rear direction and are attached in parallel with each other. This pair of board guide rails 4
Guide grooves 48a,
50a are formed.

A main control board 52 for controlling the overall operation of the facsimile machine 10 is supported in a state in which both end edges are slidably guided by the guide grooves 48a and 50a. Then, by removing the rear cover 30e, the main control board 52 can be taken out of the enclosure 28 through the rear opening 30d. In this way, the main control board 52 can be replaced very easily as necessary. You can do it.

As shown in FIG. 4, the bottom of the lower housing 30 is formed with a bottom opening 30f slightly larger than the laser scanning unit 24. 30f is
It is openably closed by a bottom cover (not shown). And by removing this bottom blind cover,
The laser scanning unit 24 is provided with the bottom opening 30.
Through f, it can be easily put in and out of the lower space described above. In other words, during assembly of the facsimile machine 10, for example, by setting the halfway assembly sideways down, the laser scanning unit 24 can be easily mounted on the main plate 12 even after the lower housing 30 is assembled. The laser scanning unit 24 can be assembled on the lower surface. Further, even when the laser scanning unit 24 is replaced in the event of a failure, simply remove the bottom cover 30g without removing the lower housing 30. This replacement operation can be performed, and the workability for assembling the laser scanning unit 24 and the workability for the replacement can be improved.

[Description of Document Tray] Next, the configuration of the above-described document tray 40 and the receiving structure of the document tray 40 in the printer housing 32 will be described in detail with reference to FIGS. First, as shown in a partially enlarged state in FIG. 10, the document tray 40 is a flat platen 54 on which a document is placed.
The pair of left and right guides 40a and 40b described above are movably mounted on the document table 54 in the width direction. Inclined bosses 56 and 58 for supporting the document tray 40 on the upper housing 34 in a state where the document tray 40 is inclined at a predetermined angle are integrally formed on the left and right ends of the front portion of the document placing table 54. Here, as shown in FIGS. 11 and 12, the inclined bosses 56 and 58 are provided on support surfaces 56a and 58a which are inclined by a predetermined angle with respect to the extending surface of the document placing table 54 (ie, the document placing surface). Is provided in the rear half of the lower surface, and the supporting surfaces 56a and 58a are in close contact with the upper surface of the upper housing 34, so that the document placing table 54 is inclined at a predetermined angle with respect to the upper surface of the upper housing 34. Will be supported.

In the front half of the lower surface of each of the inclined bosses 56, 58, projecting bosses 60, 6 projecting downward are provided.
2 are integrally formed. Each projecting boss 60,
On the lower surface of the document 62, the support surface 56 extends substantially parallel to the extension surface (document placement surface) of the document table 54.
a, protruding surface 60a protruding downward from 58a,
62a are respectively formed. And each projecting boss 6
Locking pins 60b, 62b projecting outward in the width direction, that is, from the left and right side surfaces of the corresponding projecting bosses 60, 62, respectively, are integrally attached to the lower ends of the projections 0, 62. ing.

On the other hand, as shown in FIG. 12, a tray receiving base 35 for receiving the document tray 40 is integrally mounted on the upper surface of the upper housing 34 to which the document tray 40 is mounted. On the upper surface of the tray receiving base 35, insertion holes 35a, 35b through which a pair of left and right locking pins 60b, 62b are inserted from above are formed. In addition, a portion of the tray receiving base 35 located immediately before each of the insertion holes 35a, 35b has a corresponding insertion hole 35a, 35b.
And the corresponding projecting bosses 60, 62
Are formed in the fitting holes 35c and 35d.
Here, each of the fitting holes 35c and 35d is set to a size large enough to form a predetermined space in front of the front surfaces 60c and 62c of the projecting bosses 60 and 62 fitted therein. In addition, on the lower surface of the portion that defines both side edges of the fitting holes 35c and 35d, the corresponding locking pins 60b and 6
2b for receiving a rotating portion 2b so as to be rotatable.
35f is formed.

Since the original tray 40 and the tray holder 35 to which the original tray 40 is attached are configured as described above, when attaching the original tray 40 to the tray receiver 35, first, as shown in FIG. Is set in a substantially upright state, and from this state, as shown in FIG. 14, each locking pin 60b, 62b is inserted into the corresponding insertion hole 35a, 35b.
Is inserted downward, and each protruding boss 60,
62 is fitted into the corresponding fitting holes 35c and 35d. In this manner, each locking pin 60b, 62b is taken out below the lower surface of the upper housing 34.

Thereafter, the support surfaces 56a, 58a of the inclined bosses 56, 58 and the projecting surfaces 6 of the projecting bosses 60, 62
0a and 62a are inserted into corresponding insertion holes 35.
When the document tray 40 is rotated counterclockwise in the figure as a whole as shown in FIG. The locking pins 60b and 62b enter the corresponding recesses 35e and 35f from below, and are received in a rotatable state, respectively, and the respective support surfaces 56a and 58a are brought into close contact with the upper surface of the upper housing 34 to abut. Touch In this manner, the document tray 40 is mounted on the upper surface of the tray receiving base 35.

Incidentally, the original tray 40 is placed on the tray support 3
When removing the original tray 40 from the upper housing 34, the document tray 40 can be very easily attached to and detached from the upper housing 34. Can be surely maintained in a stable state. That is, when the document tray 40 is attached to the upper housing 34,
Since a and 58a are in close contact with the upper surface of the tray receiving base 35, they move backward (that is, along the counterclockwise direction in the figure).
Rotation is prohibited, and the mounting posture is maintained. On the other hand, the front faces 60c, 62c of the protruding bosses 60, 62
So that a predetermined space is formed in front of the fitting holes 35.
Since the sizes of c and 35d are set, the document tray 40 is allowed to rotate forward (that is, along the clockwise direction in the figure).

On the other hand, as shown in FIG. 16, when the upper housing 34 is lowered and the upper surface of the printer housing 32 is completely closed by the upper housing 34, the document tray 40 attached to the upper housing 34 is set. And a paper feed cassette 3 attached to a print mechanism 14 fixed to the main plate 12.
6 are arranged substantially parallel to each other. As is apparent from the above description, since the document tray 40 is attached to the upper housing 34 and the paper feed cassette 36 is attached to the printing mechanism 14, for example, during maintenance of the printing mechanism 14, When an attempt is made to open upward with the pivoting operation of the swing frame 16, the document tray 40 is also pivoted integrally with this opening operation, but the sheet cassette 36 remains at that position. Will be. As a result, FIG.
7, the rear end of the document tray 40 interferes with and contacts the upper surface of the paper feed cassette 36.

However, in this embodiment,
As described above, since the document tray 40 is allowed to rotate in the clockwise direction in the drawing from the attached state with respect to the upper housing 34, the further opening operation of the upper housing 34 from the state shown in FIG. Accordingly, the trailing end of the document tray 40 is rotated clockwise with respect to the upper housing 34 while tracing the upper surface of the sheet cassette 36 so as to slide. In this manner, the document tray 40 is rotated clockwise in a state following the opening operation of the upper housing 34, so that, for example, the rear end of the document tray 40 is moved in the opening operation of the upper housing 34. Even if the original tray 40 comes into contact with the upper surface of the paper feed cassette 36 on the way, there is no possibility that the document tray 40 is damaged, and there is no possibility that the opening operation of the upper housing 34 is hindered.

On the other hand, as described above, the lower housing 3
The adjustment board 46 shown in FIG. 19 is accommodated in the front space in the space below the zero. A large number of jumper terminals 64a, 64b,... Are erected on the front edge of the adjustment board 46 facing the above-described front opening 30b. Each of the jumper terminals 64a, 64b,... Is, as shown in FIG.
a, 65b. And the connecting member 66
Are electrically connected to each other through the jumper terminals 64a, 64b..., That is, by short-circuiting, so that the electrical connection of the jumper terminals 64a, 64b. The state is defined as "0" state. On the other hand, any jumper terminal 6
When the connection terminals 65a, 65b of 4a, 64b,... Are not electrically connected, the electrical state of the jumper terminals 64a, 64b,.
Defined by state.

On the other hand, in this adjustment board 46, FIG.
0, predetermined jumper terminals 64a, 64b...
Is short-circuited in a predetermined combination via the connecting member 66, so that the facsimile device 10 can be adjusted and changed to a standard such as a DC resistance value or a capacitance in accordance with the specifications of various countries around the world to be shipped. It becomes possible.
That is, in this embodiment, as is apparent from the above description, in order to adjust and change the electrical standards to the specifications of various countries around the world, simply remove the front blind cover 30c,
By opening the front opening 30b, the front edge of the adjustment board 46 is made accessible so that the front opening 30b is open.
b, by attaching the connecting members 66 to the corresponding jumper terminals 64a, 64b,... according to the specifications of the respective countries, so that the facsimile apparatus 10 has an electrical standard that matches the specifications of the country. Adjustment can be changed.

As a result, the manufacturer that manufactures the facsimile machine 10 does not need to set up a production line in consideration of the standards in various countries around the world, and can set up a uniform production line, thereby greatly improving the production efficiency. Becomes Therefore, it is not necessary to manage the electrical standards of each country in the world, and it is not necessary to manage the inventory of electrical components in each country according to the number of shipments by country, thereby improving productivity. Become.

On the other hand, in a country to which the facsimile machine 10 is supplied, predetermined jumper terminals 64a, 64b...
6, the connecting member 66 can be attached by simply removing the front blind cover 30c. For example, the lower housing 30
It is not necessary to remove the adjustment board 46 from the enclosure 28. In this manner, this change adjustment operation is performed by simply removing the front blind cover 30c and setting the predetermined jumper terminals 64a,
A very simple operation of attaching the connecting member 66 to 64b... Is sufficient, and the effect of improving the working life can be obtained.

It is needless to say that the present invention is not limited to the configuration of the above-described embodiment, but can be variously modified without departing from the gist of the present invention. For example, in the above-described embodiment, the case where the electrophotographic apparatus according to the present invention is applied to a facsimile apparatus has been described. However, the present invention is not limited to such an application and a so-called so-called communication apparatus having no communication function is provided. It goes without saying that the present invention can be applied to a printer device.

[0037]

[Effects of the invention] As described above, the power
According to the child photographic device, it opens the upper housing
Access to the photosensitive drum and developing means
Repairs can be made without removing the closure
Workability improves accordingly. Also, Upper House
Housing the image reading means in the
An opening is provided in the upper surface of the housing, and a
Easy to adjust the image reading means by closing with a panel member
become.

[0038]

[0039]

[0040]

[0041]

[0042]

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an internal configuration of a facsimile apparatus to which an embodiment of an electrophotographic apparatus according to the present invention is applied.

FIG. 2 is a perspective view showing the external appearance of the configuration of the facsimile apparatus shown in FIG. 1 as viewed obliquely from the front.

FIG. 3 is a perspective view showing the external appearance of the configuration of the facsimile apparatus shown in FIG. 1 as viewed obliquely from the rear.

FIG. 4 is a bottom view showing the bottom shape of the facsimile apparatus shown in FIG. 1 in a state where a bottom cover is removed;

FIG. 5 is a bottom view of the main plate constituting the facsimile apparatus shown in FIG.

FIG. 6 is a rear view showing a rear surface shape in a state where a configuration below the main plate shown in FIG. 5 is taken out.

7 is a perspective view showing the facsimile apparatus shown in FIG. 2 with an upper housing opened.

FIG. 8 is a side view showing a side shape of the facsimile apparatus shown in FIG. 7;

FIG. 9 is a front view showing a front shape of the facsimile apparatus shown in FIG. 1;

FIG. 10 is a perspective view showing a state in which a document tray provided in the facsimile apparatus shown in FIG. 1 is taken out.

11 is a perspective view showing the document tray shown in FIG. 10 and a tray receiving table attached to an upper housing in a state where the document tray and the tray receiving stand are separated from each other;

FIG. 12 is a side sectional view showing a state where the document tray shown in FIG. 11 is attached to a tray receiving base.

13 is a side cross-sectional view showing the document tray shown in FIG. 11 in an upright state immediately before being attached to the tray receiving base.

FIG. 14 is a side cross-sectional view showing a state in which a document tray that has been raised from the state shown in FIG. 13 is inserted from above into an insertion hole of the tray receiving base;

15 is a side sectional view showing a state immediately after the operation of inclining the original tray with respect to the tray receiving tray is started from the state shown in FIG. 14;

FIG. 16 is a side view showing the facsimile apparatus shown in FIG. 2 in a completely closed state.

FIG. 17 is a side view showing the facsimile apparatus with the upper frame in a semi-open state from the state shown in FIG. 16;

FIG. 18 is a side view showing the facsimile apparatus with the upper frame fully opened from the state shown in FIG. 17;

FIG. 19 is a plan view showing an upper surface shape of an adjustment substrate provided in the facsimile apparatus shown in FIG. 1;

20 is a front view showing a state immediately before attaching a connecting member to a jumper terminal on the adjustment board shown in FIG. 19;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Facsimile apparatus 14 Printing mechanism 28 Enclosure 30 Lower housing 32 Printer housing (middle housing) 34 Upper housing

Continuation of the front page (56) References JP-A-63-110464 (JP, A) JP-A-63-124839 (JP, U) JP-A-60-169639 (JP, U) JP-A-2-141166 (JP) , U) Actually open 63-170151 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03G 21/16-21/18 G03G 15/00 550 B41J 3/00 B41J 29 / 00

Claims (3)

(57) [Scope of request for utility model registration] 1. An electrophotographic apparatus provided with image forming means using electrophotography, comprising: an enclosure defining an outer surface of the apparatus; and a main plate for dividing an inner space of the enclosure into upper and lower parts. A lower housing located below the main plate and having an open upper surface, a middle housing located above the main plate and having upper and lower surfaces opened, and located above the middle housing. And an upper housing having an open lower surface, the upper housing being swingably openable and closable with respect to the middle housing, and a photosensitive drum and a developing means which are components of the image forming means. To the top of the main plate so as to be surrounded by the middle housing. With, the upper Howe
Release the jing to the photosensitive drum and developing means
Thereby configured to be accessible is, laser scanning to form a latent image on the photosensitive drum
The unit is surrounded by the lower housing.
Mounted on the lower surface of the main plate.
Electrophotographic apparatus to be. 2. A projection projecting below the lower housing.
The main play is provided by a lower frame having
2. The electrophotograph of claim 1, wherein the electrophotograph is configured to support
apparatus. 3. An image forming apparatus using an electrophotographic method.
Electrophotographic equipment , the top surface of which is an enclosure that defines the outer surface of the device.
Lower housing and middle housing with open upper and lower surfaces
With a housing and an upper housing with an open lower surface
The upper housing is configured to be divided into three parts, and the upper housing is
A photosensitive drum and a developing device
Laser scanning means for accommodating means in the middle housing and forming a latent image on the photosensitive drum
Housing the unit in the lower housing,
An electrophotographic apparatus characterized by the following .