JPH0579563U - Electrophotographic device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an electrophotographic apparatus in which a document tray can be easily attached and detached. [Structure] This electrophotographic apparatus includes an enclosure that defines an outer surface of the apparatus, and is disposed in the enclosure.
An image forming means utilizing electrophotography, an image reading means arranged in the enclosure, for reading an image of an original, and a detachably mounted on the upper surface of the enclosure, and supplied to the image reading means. A document tray on which a document is placed, and the document tray is in a state where the supporting surface is in contact with a mounting surface portion of the enclosure so that the mounting surface is inclined at a predetermined angle with respect to the mounting surface portion. It is characterized in that it is attached so as to be rotatable forward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrophotographic apparatus having an image forming means utilizing electrophotography.

[0002]

[Prior Art]

 Conventionally, an electrophotographic apparatus is provided with an enclosure for defining the outer periphery of the electrophotographic apparatus, through which the internal structure is partitioned and protected from the outside. Incidentally, in this enclosure, an image reading mechanism for reading the image of the document and at least a printing mechanism for printing the image read by the image reading mechanism are housed.

[0003]

[Problems to be solved by the device]

 Here, in a conventional electrophotographic apparatus, an enclosure main body whose entire surface is covered with an enclosure and whose upper and side surfaces are opened respectively, and an enclosure main body which is rotatably attached to the upper surface of the enclosure main body and occludes an upper opening so that it can be opened. It may consist of an upper housing. In this case, the document tray for placing the documents conveyed to the image reading mechanism is installed on the upper surface of the upper housing, and the paper feed cassette for supplying the paper to the printing mechanism is installed on the enclosure body. Will be Then, this paper feed cassette is arranged immediately behind the document tray when the overall structure is reduced.

For this reason, when the upper surface of the enclosure main body is rotated rearward for the purpose of maintaining and inspecting the internal mechanism, the enclosure tray is attached to the original tray as the upper housing is opened. Will be displaced to the rear and interfere with the paper cassette. For this reason, it is pointed out that this document tray must be removed prior to the rotation of the upper housing, which makes maintenance and inspection operations troublesome. On the other hand, it has been pointed out that if the upper housing is rotated without removing the original tray, the original tray may be damaged due to interference with the paper feed cassette.

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 in which a document tray can be easily attached and detached. Another object of the present invention is to provide an electrophotographic apparatus capable of preventing the interference with the sheet feeding cassette due to the opening operation of the upper housing while reducing the size of the entire apparatus.

[0006]

[Means for solving the problem]

 In order to solve the above-mentioned problems and to achieve the object, an electrophotographic apparatus according to the present invention comprises an enclosure for defining an outer surface of the apparatus, an image forming means arranged in the enclosure and utilizing an electrophotographic method, An image reading unit arranged in the enclosure for reading an image of a document, and a document tray detachably attached to an upper surface of the enclosure for placing a document supplied to the image reading unit. The document tray is rotated forward with the supporting surface abutting the mounting surface of the enclosure so that the mounting surface is inclined at a predetermined angle with respect to the mounting surface. The feature is that it can be attached.

Further, in the electrophotographic apparatus according to the present invention, the document tray is provided with a tray body having a placement surface on which a document is placed, and the front and rear ends of the tray body. The inclined boss portion is inclined at a predetermined angle with respect to the surface and has a supporting surface that abuts and supports the mounting surface portion of the enclosure, and the inclined boss portion is formed so as to project forward from each inclined boss portion and at the tip portion The projecting boss portion is provided with a locking pin extending along a width direction orthogonal to the document feeding direction. The projecting boss portion is penetrated from above the mounting surface portion of the enclosure. Through-holes are formed, and each through-hole has an insertion hole through which the locking pin is inserted, and an insertion hole into which the corresponding protruding boss portion is inserted and which is formed in a continuous state in front of the insertion hole. Consists of It is characterized in that a concave portion into which the locking pin is fitted from below is formed on the lower surface of a portion defining both sides of the fitting hole in a state of being opened downward.

Further, in the electrophotographic apparatus according to the present invention, the width of the fitting hole is set to be narrower than the width of the corresponding insertion hole. Further, in the electrophotographic apparatus according to the present invention, it is characterized in that the recess corresponding to the locking pin is formed in a shape allowing the rotation of the locking pin. The electrophotographic apparatus according to the present invention is characterized in that the locking pin is formed in a circular cross section and the recess is formed in a semicircular cross section.

Further, in the electrophotographic apparatus according to the present invention, a paper feed cassette for accommodating the paper to be supplied to the image forming means is attached to and detached from the upper surface of the enclosure in a state of being located right behind the original tray. It is characterized by being freely installed.

In the electrophotographic apparatus according to the present invention, the enclosure includes a fixed enclosure body and an upper housing rotatably attached to an upper surface of the enclosure body, and the original tray is The paper feed cassette is attached to the upper housing, and the paper feed cassette is attached to the enclosure main body.

[0011]

【Example】

 Hereinafter, a configuration of an embodiment of the electrophotographic apparatus according to the present invention will be described in detail with reference to the accompanying drawings in the case of being applied to a facsimile apparatus.

[Description of Overall Configuration] As shown in FIG. 1, the facsimile apparatus 10 according to the present embodiment automatically reads the image information of a transmission original in which a plurality of sheets are set at one time, one by one, The read image information is sent to the facsimile machine on the receiving side of the other party using the telephone line, and the image information transmitted from the facsimile machine on the other party's receiving side is transmitted via electrophotography using the laser scanning method. It is constructed so that it can be transferred (image formation) to a built-in paper (in this embodiment, a cut plain paper). On the other hand, the facsimile apparatus 10 is configured to have a so-called electronic copying function capable of copying (forming an image) the image information read from the original document on a built-in sheet. Further, the facsimile device 10 has a so-called printer function capable of transferring (forming an image) the image information transmitted from the information processing device, for example, through a connection line other than a telephone line to a sheet containing the image. Is also configured.

The facsimile apparatus 10 is mounted on the upper surface of the main plate 12 and the main plate 12 arranged substantially parallel to the mounting surface thereof, and has the above-described image forming function. The print mechanism 14, a swing frame 16 that is rotatably supported at the rear end of the main plate 12, and is swingable with respect to the main plate 12, and is disposed on the upper surface of the swing frame 16. An image reading mechanism 18 having the above-described image reading function, and a control panel 20 having a rear end rotatably supported by an intermediate portion of the swing frame 16 and swingable with respect to the main swing frame 16. Lower frames 22a, 22b fixed to both left and right sides of the lower surface of the main plate 12 and extending in the front-rear direction, and both lower frames 22a, 22b. The laser scanning unit 24 which is disposed in the space sandwiched between the main plate 12 and the lower surface of the main plate 12 and has a function of forming a latent image on the outer peripheral surface of the photosensitive drum (described later) of the print mechanism 14, The lower frames 22a and 22b each have four legs 26 fixed to the front and rear ends of the lower surface, respectively, and mounted on a mounting surface (not shown).

[Explanation of Enclosure 28] Further, as shown in FIGS. 2 and 3, the facsimile apparatus 10 is provided with an enclosure 28 that completely defines the outer surface thereof. In this embodiment, the enclosure 28 is arranged 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 below the main plate 12. The lower housing 30 and the middle housing, which is continuously provided immediately above the lower housing 30 and surrounds the print mechanism 14 and is provided above the main plate 12. A housing (printer housing) 32 and an upper housing 34 which is continuously arranged immediately above the printer housing 32 and fixed to the swing frame 16 so as to openably close the upper opening of the housing 32. It is configured in a state in which it is divided into three parts. The control panel 20 is pivotally supported at the rear edge of the front opening so as to openably close the front opening formed in the front portion of the upper housing 34. There is.

As described above, since the enclosure 28 that defines the outer surface of the facsimile device 10 has the three-part structure including the lower housing 30, the printer housing 32, and the upper housing 34, after assembling all the internal structures, The enclosure 28 can be assembled in a state irrelevant to the internal structure, and the workability of assembling the facsimile device 10 can be improved. As shown in FIG. 4, the above-mentioned leg portions 26 are arranged at four corners of the substantially rectangular bottom surface of the facsimile apparatus 10, and as shown in FIGS. 5 and 6, respectively. It is fixed to the lower surfaces of the lower frames 22a and 22b. That is, in the fax machine 10, the main plate 12 does not have the enclosure 28 (particularly the lower housing 30) assembled therein during the assembly thereof, but the main plate 12 has the lower frames 22a, It will be stably placed on an assembly table (not shown) via the leg portions 26 fixed to the lower surface of 22b.

Further, with the lower housing 30 attached to the lower frames 22a and 22b, as shown in FIGS. 4 and 6, each leg portion 26 is formed on the lower housing 30 in a corresponding state. It is configured to be inserted through the through hole 30a formed of the stupid hole and taken out downward. As a result, the weight of the facsimile device 10 is basically received by the main plate 12 via the lower frames 22a and 22b while the facsimile device 10 is placed on the assembly table, and the enclosure 28 including the lower housing 30 is received. Will have no effect on. Therefore, an unnecessary load (self-weight) does not act on the enclosure 28, the risk of deformation due to receiving this load is eliminated, and thinning is achieved, so that the overall weight can be reduced. Become.

Although the details will be described later, the laser scanning unit 24 is set so as to be attached to the lower surface of the main plate 12 as shown in FIG. .. As shown in FIG. 6, a part of the laser scanning unit 24 (specifically, a laser beam outlet for image exposure on a photosensitive drum, which will be described later), is projected to the upper surface side of the main plate 12. Is set. Here, if the leg portion 26 is attached to the lower surface of the lower housing 30 and the lower housing 30 receives the load through the leg portion 26, the lower housing 30 is not assembled in advance. It becomes difficult to assemble No. 4, the work order is greatly restricted, and the workability is extremely deteriorated. However, in this embodiment, the leg portions 26 for receiving the load are fixed to the lower frames 22a and 22b in a state independent of the lower housing 30, so that the leather scanning unit 24 is configured so that After the lower frames 22a and 22b are assembled to the main plate 12, 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 the workability can be improved.

On the other hand, in the center of the rear part of the above-mentioned upper housing 34, as shown in FIGS. 2 and 3, a paper feed cassette 36 is inserted and a paper feed cassette mounting opening 34a also serving as a transfer paper take-in opening is formed. Further, document intake ports 34b for receiving the transmission originals are formed in front of the attachment ports 34a, respectively. Although not described, the paper feed cassette 36 is configured so that a large number of paper sheets of a predetermined size can be accommodated in a batch. Further, in the front surface of the printer housing 32, a paper ejection outlet 32a for ejecting the paper on which the image information is transferred is formed on the lower surface in a state of being positioned downward, and the reading operation is provided above the paper ejection opening 32a. A document discharge port 32b through which the transmitted document after the completion is discharged is formed. Further, as shown in FIGS. 1 and 2, the front surface of the lower housing 30 receives the paper ejected from the paper ejection port 32a and the transmission original document ejected from the document ejection port 32b. A paper discharge tray 38 is detachably attached. On the other hand, as shown in FIG. 2, a pair of guide portions 40a and 40b are provided at the above-mentioned original document intake port 34b so as to be movable along the width direction of the transmitted original document according to the size of the original document to be transmitted. A document tray 40 is detachably attached.

On the upper surface of the control panel 20 described above, various operation buttons 20a are arranged, and a display window 20b having a liquid crystal display device for displaying predetermined information to an operator is arranged. ing. 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 to push it up to lock the swing frame 16 to the main plate 12 in a closed state. 7 is released, the swing frame 16 and the upper housing 34 attached to the swing frame 16 can be rotated upward as shown in FIG. As a result, the upper opening of the printer housing 32, that is, the upper surface of the print mechanism 14 is opened over substantially the entire surface, and the operation of removing the paper jammed during the conveyance and the maintenance of each mechanism portion constituting the print mechanism 14 are performed. Etc. can be easily performed.

On the other hand, to the immediate left of the upper housing release button 42, a control panel release button 44 is arranged adjacent to it. 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 push it down, the lock of the control panel 20 in the closed state to the swing frame 16 is released. Then, as shown in FIG. 8, the control panel 20 can rotate upward. As a result, the front opening of the upper housing 34, that is, the upper surface of the image reading mechanism 18 is opened over substantially the entire surface, and the operation of removing the document jammed during conveyance and each mechanism forming the image reading mechanism 18 are performed. It will be possible to easily perform maintenance of the parts. As shown in FIG. 9, a front opening 30b communicating with the front inner 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 openably closed by a front blind cover 30c (shown in FIG. 7). Incidentally, as will be described in detail later, in this front inner space, an adjustment board 46 for changing and adjusting, for example, a direct current resistance value, an electrostatic capacitance, etc. is accommodated in accordance with the standards of each country in the world. .. Then, by removing the front blind cover 30c, it is possible to adjust and set the DC resistance value, the electrostatic capacitance, etc. in the adjustment board 46 according to the standard of the country to be shipped. .

On the other hand, on the rear surface of the lower housing 30, as shown in FIG. 3, there is formed a rear opening 30d communicating with the rear inner space in the lower space. The rear opening 30d is openably closed by a rear blind cover 30e. In the rear inner space, as shown in FIG. 6, a pair of left and right board guide rails 48, 50 are parallel to each other in a state of extending in the front-rear direction on the lower surfaces of the lower frames 22a, 22b. It is installed in a state of being attached to. Guide grooves 48a and 50a are formed on the inner surfaces of the pair of substrate guide rails 48 and 50 facing each other.

A main control board 52 which controls the entire control of the facsimile apparatus 10 is supported in a state where both end edges are slidably guided by the guide grooves 48a and 50a. Then, by removing the rear blind 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 very easily used as needed. Will be replaced.

The bottom portion of the lower housing 30 is formed with a bottom opening 30f which is slightly larger than the laser scanning unit 24, as shown in the bottom view of FIG. The opening 30f is openably closed by a bottom blind cover (not shown). Then, by removing the bottom blind cover, the laser scanning unit 24 can be easily put into and taken out from the lower space described above through the bottom opening 30f. In other words, during the assembly of the facsimile device 10, for example, by setting the intermediate assembly to the sideways state, the laser scanning unit 24 can be easily mounted on the main plate even after the lower housing 30 is assembled. The bottom blind cover 30g can be simply removed without removing the lower housing 30 even when the laser scanning unit 24 is replaced in the event of a failure. This replacement operation can be performed only by itself, and the workability of assembling the laser scanning unit 24 and the workability of the replacement thereof can be improved.

[Description of Document Tray] Next, the configuration of the document tray 40 described above and the receiving structure of the document tray 40 in the printer housing 32 will be described in detail with reference to FIGS. First, the original tray 40 is provided with a flat plate-like original placing table 54 on which an original is placed, as shown in a partially enlarged state in FIG. 10, and on the original placing table 54, the above description is given. A pair of left and right guide portions 40a and 40b are attached so as to be movable along the width direction. Inclined boss portions 56, 58 for supporting the document tray 40 on the upper housing 34 in a state of being inclined at a predetermined angle are integrally formed at both left and right sides of the front portion of the document placing table 54. Here, as shown in FIGS. 11 and 12, each of the inclined boss portions 56, 58 has a support surface 56a, which is inclined by a predetermined angle with respect to the extending surface of the document placing table 54 (that is, the document placing surface). 58a is provided in the latter 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 tilted by a predetermined angle with respect to the upper surface of the upper housing 34. It will be supported in an inclined state.

Further, projecting boss portions 60 and 62 projecting downward are integrally formed on the front half portions of the lower surfaces of the inclined boss portions 56 and 58, respectively. On the lower surface of each of the projecting boss portions 60 and 62, a projection that extends substantially parallel to the extending surface of the document mounting table 54 (document mounting surface) and that projects downward from the above-mentioned supporting surfaces 56a and 58a. Surfaces 60a and 62a are formed, respectively. At the lower ends of the projecting boss portions 60, 62, locking pins 60b projecting outward along the width direction, that is, from the left and right side surfaces of the corresponding projecting boss portions 60, 62, respectively. 62b is attached integrally.

On the other hand, as shown in FIG. 12, a tray holder 35 for receiving the document tray 40 is integrally attached to the upper surface of the upper housing 34 to which the document tray 40 is attached. Through holes 35a, 35b are formed on the upper surface of the tray receiving base 35 so that the pair of left and right locking pins 60b, 62b are inserted from above. Corresponding protruding bosses 60 and 62 are fitted to the tray receiving base 35 located immediately in front of the respective insertion holes 35a and 35b in a continuous state with the corresponding insertion holes 35a and 35b. Fitting holes 35c and 35d are formed. Here, the respective fitting holes 35c, 35d are set to have a size sufficient to form a predetermined space in front of the front surfaces 60c, 62c of the projecting boss portions 60, 62 fitted therein. Further, recesses 35e and 35f having a semicircular cross section for rotatably receiving the corresponding locking pins 60b and 62b from below are formed on the lower surface of the portion defining the both side edges of the respective fitting holes 35c and 35d. Has been done.

Since the original tray 40 and the tray receiving stand 35 to which it is attached are configured in this manner, when attaching the original tray 40 to the tray receiving stand 35, first, as shown in FIG. 14 in a substantially upright state. From this state, as shown in FIG. 14, the locking pins 60b, 62b are inserted through the corresponding insertion holes 35a, 35b, and the protruding bosses 60, 62b are inserted. Are fitted into the corresponding fitting holes 35c and 35d. In this way, the locking pins 60b and 62b are taken out below the lower surface of the upper housing 34.

After that, the portions where the supporting surfaces 56a, 58a of the inclined boss portions 56, 58 and the projecting surfaces 60a, 62a of the projecting boss portions 60, 62 intersect with each other are set behind the corresponding insertion holes 35a, 35b. As shown in FIG. 15, by rotating the document tray 40 as a whole in the counterclockwise direction in the state where it is applied to the upper edge of each end, as shown in FIG. , 62b enter into the corresponding recesses 35e, 35f from below, and are received in a rotatable state by the respective recesses 35e, 35f, and the respective support surfaces 56a, 58a closely contact and abut on the upper surface of the upper housing 34. In this way, the document tray 40 is attached to the upper surface of the tray receiving stand 35.

When removing the document tray 40 from the tray receiving base 35, the procedure reverse to the above-described mounting operation may be performed. In this way, the document tray 40 can be easily replaced by the upper tray. It can be attached to and detached from the housing 34, and in the attached state, its posture can be reliably maintained in a stable state. That is, when the original tray 40 is attached to the upper housing 34, the supporting surfaces 56a and 58a are in close contact with the upper surface of the tray receiving base 35, so that the original tray 40 moves backward (that is, in the opposite direction in the drawing). Rotation (in the clockwise direction) is prohibited, and the mounting posture will be maintained. On the other hand, since the size of each of the fitting holes 35c and 35d is set so that a predetermined space is formed in front of the front surfaces 60c and 62c of the protruding boss portions 60 and 62, the document tray 40 is moved forward. Rotation (that is, along the clockwise direction in the figure) is allowed.

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, a document tray attached to the upper housing 34 is attached. 40 and a paper feed cassette 36 attached to the print mechanism 14 fixed to the main plate 12 are arranged substantially parallel to each other. As is clear from the above description, the document tray 40 is attached to the upper housing 34, and the paper feed cassette 36 is attached to the print mechanism 14. Therefore, for example, when the print mechanism 14 is maintained, the upper housing 34 is When the swinging frame 16 is rotated upward to open it upward, the original tray 40 is also rotated integrally with the opening operation. Will remain. As a result, the rear end of the document tray 40 interferes with the upper surface of the paper feed cassette 36 and abuts against it when the document tray 40 is half opened as shown in FIG.

However, in this embodiment, as described above, since the original 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 original tray 40 shown in FIG. With the further opening operation of the upper housing 34 from the state shown, the rear end of the document tray 40 is slid along the upper surface of the paper feed cassette 36 and is moved in the clockwise direction in the figure with respect to the upper housing 34. It will rotate. In this manner, the document tray 40 is rotated clockwise along with the opening operation of the upper housing 34, so that, for example, the rear end of the document tray 40 is the opening operation of the upper housing 34. Even if it comes into contact with the upper surface of the paper feed cassette 36 on the way, the original tray 40 may not be damaged, and the opening operation of the upper housing 34 may not be disturbed.

On the other hand, as described above, the adjustment board 46 shown in FIG. 19 is housed in the front space in the lower space of the lower housing 30. 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. As shown in FIG. 20, each of the jumper terminals 64a, 64b ... Is composed of a pair of connection terminals 65a, 65b which are spaced apart in the state of being close to each other. Then, by electrically connecting the connection terminals 65a and 65b of the arbitrary jumper terminals 64a, 64b ... Through the connecting member 66, that is, by shorting them, the jumper terminal 64a in the corresponding circuit. , 64b ... The electrical state is defined as the “0” state. On the other hand, in a state where the connection terminals 65a, 65b of the arbitrary jumper terminals 64a, 64b ... Are not electrically connected, the electrical state of the jumper terminals 64a, 64b. Stipulated in.

On the other hand, in the adjustment board 46, as shown in FIG. 20, the predetermined jumper terminals 64a, 64b, ... It is possible to adjust and change the specifications such as DC resistance value and capacitance according to the specifications of each country to be shipped. That is, in this embodiment, as is apparent from the above description, in order to adjust and change the electrical standard according to the specifications of each country, simply remove the front blind cover 30c and open the front opening. By opening 30b, the front edge of the adjustment board 46 is made accessible, and the connecting member 66 is connected to the corresponding jumper terminals 64a, 64b according to the specifications of each country through the front opening 30b. It is possible to adjust and change the facsimile device 10 so that it becomes an electrical standard according to the specifications of the country by attaching it to.

As a result, the manufacturer of the facsimile apparatus 10 does not need to set a production line in consideration of the standards in each country of the world, and a uniform production line can be set up, and the production efficiency is extremely improved. It will be a thing. Therefore, it becomes unnecessary to manage the electrical standard of each country in the world, and it becomes unnecessary to manage the inventory of the electric parts of each country according to the number of shipped units of each country, and the productivity can be improved. become.

On the other hand, in the country to which the facsimile device 10 is supplied, the predetermined jumper terminals 64a, 64b, ... Are short-circuited by the connecting member 66 in a state conforming to the standard peculiar to the country. The attaching operation of the connecting member 66 can be performed simply by removing the front blind cover 30c. For example, it is necessary to remove the lower housing 30 and also remove the adjusting board 46 itself from the enclosure 28. Is not necessary either. In this way, this changing and adjusting operation requires only a very simple work of removing the front blind cover 30c and attaching the connecting members 66 to the predetermined jumper terminals 64a, 64b ... It is possible to achieve the effect of achieving this.

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

[0037]

[Effect of the device]

 As described above in detail, the electrophotographic apparatus according to the present invention includes an enclosure that defines the outer surface of the apparatus, an image forming unit that is disposed in the enclosure and uses electrophotography, and an enclosure that is disposed in the enclosure. An image reading means for reading the image of the original, and an original tray detachably attached to the upper surface of the enclosure and on which an original supplied to the image reading means is placed. The document tray is mounted so that the supporting surface abuts on the mounting surface of the enclosure so that the mounting surface is inclined at a predetermined angle with respect to the mounting surface and is rotatable frontward. It is characterized by being.

Further, in the electrophotographic apparatus according to the present invention, the document tray is provided with a tray body having a placement surface on which a document is placed, and the front and rear ends of the tray body. The inclined boss portion is inclined at a predetermined angle with respect to the surface and has a supporting surface that abuts and supports the mounting surface portion of the enclosure, and the inclined boss portion is formed so as to project forward from each inclined boss portion and at the tip portion The projecting boss portion is provided with a locking pin extending along a width direction orthogonal to the document feeding direction. The projecting boss portion is penetrated from above the mounting surface portion of the enclosure. Through-holes are formed, and each through-hole has an insertion hole through which the locking pin is inserted, and an insertion hole into which the corresponding protruding boss portion is inserted and which is formed in a continuous state in front of the insertion hole. Consists of It is characterized in that a concave portion into which the locking pin is fitted from below is formed on the lower surface of a portion defining both sides of the fitting hole in a state of being opened downward.

Further, in the electrophotographic apparatus according to the present invention, the width of the fitting hole is set to be narrower than the width of the corresponding insertion hole. Further, in the electrophotographic apparatus according to the present invention, it is characterized in that the recess corresponding to the locking pin is formed in a shape allowing the rotation of the locking pin. The electrophotographic apparatus according to the present invention is characterized in that the locking pin is formed in a circular cross section and the recess is formed in a semicircular cross section.

Further, in the electrophotographic apparatus according to the present invention, a paper feed cassette for accommodating the paper to be supplied to the image forming means is attached to and detached from the upper surface of the enclosure in a state of being located immediately behind the document tray. It is characterized by being freely installed.

Further, in the electrophotographic apparatus according to the present invention, the enclosure is composed of a fixed enclosure body and an upper housing rotatably attached to an upper surface of the enclosure body, and the original tray is The paper feed cassette is attached to the upper housing, and the paper feed cassette is attached to the enclosure main body.

Therefore, according to this invention, it is possible to provide the electrophotographic apparatus in which the document tray can be easily attached and detached. Further, according to this invention, an electrophotographic apparatus is provided which is capable of preventing the interference with the sheet feeding cassette due to the opening operation of the upper housing while reducing the size of the entire apparatus.

[Brief description of drawings]

FIG. 1 is a side view schematically showing an internal configuration of a facsimile machine 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 facsimile apparatus shown in FIG. 1 as seen 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 when viewed obliquely from the rear.

FIG. 4 is a bottom view showing the bottom shape of the facsimile apparatus shown in FIG. 1 with a bottom blind cover removed.

5 is a bottom view showing a bottom surface shape of a main plate forming the facsimile apparatus shown in FIG. 1. FIG.

6 is a rear view showing the shape of the rear surface of the main plate shown in FIG.

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

8 is a side view showing a side shape of the facsimile device shown in FIG.

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

FIG. 11 is a perspective view showing the original tray shown in FIG. 10 and a tray pedestal attached to the upper housing in a state in which they are separated from each other in order to explain the attachment state.

FIG. 12 is a side sectional view showing the document tray shown in FIG. 11 attached to a tray holder.

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

FIG. 14 is a side cross-sectional view showing a state in which an upright document tray is inserted into the insertion hole of the tray pedestal from the state shown in FIG. 13 from above.

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

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 in a state where the upper frame is half opened 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.

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

[Explanation of symbols]

 10 Facsimile device 14 Printing mechanism 18 Image reading mechanism 28 Enclosure 30 Lower housing 32 Printer housing (middle housing) 34 Upper housing 40 Original tray

Claims (7)

[Scope of utility model registration request] 1. An enclosure for defining an outer surface of the apparatus, an image forming means arranged in the enclosure and utilizing electrophotography, and an image reading means arranged in the enclosure for reading an image of a document. , Detachably attached to the upper surface of the enclosure,
A document tray on which a document supplied to the image reading unit is placed, and the document tray has the support surface abutting against a mounting surface portion of the enclosure, so that the mounting surface is mounted on the document tray. In a state of being inclined at a predetermined angle with respect to the surface portion, and
An electrophotographic device characterized by being attached so as to be rotatable forward. 2. The document tray is provided with a tray body having a placement surface on which a document is placed, and front and rear ends of the tray body, respectively. The document tray is inclined at a predetermined angle with respect to the placement surface, and An inclined boss portion having a supporting surface that is supported by contact with the mounting surface portion of the enclosure, and is formed so as to project forward from each inclined boss portion, and has a tip portion along a width direction orthogonal to the document feeding direction. A protruding boss portion to which a locking pin that extends is attached, and a through hole through which the protruding boss portion penetrates is formed in the attachment surface portion of the enclosure. The bottom surface of the portion that defines both sides of the insertion hole, which is formed of an insertion hole through which the stop pin is inserted and an insertion hole that is formed in a continuous state in front of the insertion hole and into which the corresponding protruding boss portion is inserted. In the above The electrophotographic apparatus according to claim 1, wherein a recess into which the stop pin is fitted from below is formed in a state of being opened downward. 3. The electrophotographic apparatus according to claim 2, wherein the width of the fitting hole is set narrower than the width of the corresponding insertion hole. 4. The electrophotographic apparatus according to claim 3, wherein the recess corresponding to the locking pin is formed in a shape that allows the rotation of the locking pin. 5. The electrophotographic apparatus according to claim 4, wherein the locking pin has a circular cross section, and the recess has a semicircular cross section. 6. A paper feed cassette for removably mounting the paper to be supplied to the image forming means is detachably mounted on the upper surface of the enclosure in a state immediately behind the document tray. The electrophotographic apparatus according to claim 1. 7. The enclosure includes a fixed enclosure body and an upper housing rotatably attached to an upper surface of the enclosure body, and the document tray is attached to the upper housing. The electrophotographic apparatus according to claim 6, wherein a paper cassette is attached to the enclosure main body.