JPH0660856U - Recording device - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the recording medium unit from falling off, facilitate toner replenishment, and protect the recording medium provided in the recording medium unit even during toner replenishment. A recording medium unit 17 in which a developing device including a developer accommodating portion and a recording medium are sequentially arranged and integrated into a unit.
The recording body unit 17 is provided so that it can be inserted into and removed from the main body device with the developing device on the front side, and an engaging portion 28 is formed in a part of the recording body unit 17, and the engaging portion 28 is provided with the engaging portion 28. On the other hand, a lock member 26 for allowing the movement of the recording unit 17 in the insertion direction and for locking the lock in the pull-out direction is provided in the main body device, and a releasing member for releasing the locked state of the lock member with respect to the engaging portion 28. 27, the recording body unit 17 exposes the whole of the developing device to the outside of the main body apparatus and the recording body is engaged with the lock member 26 at an intermediate position inside the main body apparatus. So that it is positioned and provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recording apparatus such as a copying machine, a printer, and a facsimile machine using a recording medium.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, in a recording apparatus of this type, for example, a copying apparatus, there is a recording apparatus unit in which a photosensitive member and a developing device are integrally formed, and the entire unit can be freely inserted into and removed from the main body apparatus. As a result, the recording medium unit is pulled out of the machine when the photoconductor is replaced or the toner is replenished.

[0003]

[Problems to be solved by the device]

 However, since the recording unit is simply inserted into and removed from the main unit, there is a risk that the recording unit may accidentally fall off from the main unit when the recording unit is moved or transported. When the recording medium unit comes off, the photoconductor is scratched, and inconveniences such as toner scattering occur. Further, although the toner is replenished frequently, the recording unit must be pulled out of the machine every time the toner is replenished, which makes the toner replenishment work difficult.

[0004]

[Means for Solving the Problems]

 A developing unit including a developer accommodating section and a recording medium are sequentially arranged to integrally form a recording medium unit, and the recording medium unit can be freely inserted into and removed from the main body device with the developing unit on the front side. An engaging portion is formed in a part of the recording body unit, and a lock member for allowing the movement of the recording body unit in the inserting direction with respect to the engaging portion and locking and locking in the pulling direction is provided in the main body device. A releasing member for releasing the locked state of the lock member with respect to the engaging portion is provided, and the engaging portion is exposed by the recording body unit to the outside of the main body apparatus while the recording body is exposed. The main body device is positioned and provided so as to engage with the lock member at an intermediate position.

[0005]

[Action]

 Unless the release member is operated to release the lock by the lock member, the recording unit cannot be pulled out of the main unit, so that the recording unit may be inadvertently moved when the device is transported or moved. It is possible to prevent the risk of falling off to the outside, and because the entire development unit of the recording unit is exposed from the main unit when the engagement unit and the lock member are engaged. The toner can be easily replenished, and in particular, since the recording body is located inside the main unit at this time, there is no danger of damaging the recording body when the developer is replenished, and it is safe.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. First, the photosensitive belt 3 which is stretched between the driving roller 1 and the driven roller 2 is used as a recording medium. As the recording device, the surface of the rotating photoconductor belt 3 is uniformly charged to a predetermined polarity by the charging charger 4, and then the exposure device 5 irradiates light containing the information of the image to be recorded to the static state. Form a latent image. Then, toner is supplied from the developing device 6 to the electrostatic latent image to make it visible, and the toner image is synchronized with the latent image formation on the photosensitive belt 3 from the recording paper cassette 7 to the feed roller 8 and the resist. The recording paper 10 fed by the rollers 9 is superposed on the recording paper 10 at the position of the transfer charger 11, and is transferred to the recording paper 10 by the action of the transfer charger 11. After that, the recording paper 10 is separated from the photoconductor belt 3 and sent to the fixing device 12, where it is fixed, and then the paper is discharged onto the tray 14 by the paper discharge roller 13. On the other hand, the residual potential on the photosensitive belt 3 is erased by the static elimination lamp 15, and the residual toner is removed by the cleaning device 16.

The photosensitive belt 3 and the developing device 6 are unitized as a recording body unit 17. That is, the recording unit 17 is formed integrally with the photosensitive belt 3, the driving roller 1, the driven roller 2, the supporting plate 18 that rotatably supports both ends of the rollers 1 and 2, and these supporting plates 18. It is composed of a toner tank 19 as a developer accommodating portion, a developing roller 20 and the like. The recording unit 17 as described above is attached to the main body so that it can be inserted and withdrawn. That is, as shown in FIG. 2, a guide plate 21 for guiding the upper portion of the recording body unit 17 and a guide plate 23 for guiding the lower bottom plate 22 are attached to the main body apparatus. 17 is inserted into the main unit along these lines. A hole 24 is formed at a predetermined position of the guide plate 23, and a lever 26 as a lock member is urged upward by the spring 25 via the hole 24, and a lever 26 as a release member is provided on the shaft of the lever 26. The release lever 27 is fixed. A hole 28 as an engaging portion is also formed at a predetermined position of the bottom plate 22 which is a part of the recording body unit 17. 2A shows an image forming state (insertion state) in which the recording unit 17 is inserted and set at a predetermined position of the main body apparatus, and FIG. 2B shows the recording unit 17 in which the toner tank 19 is installed. The drawing shows a state in which the toner is exposed to the outside of the machine and toner can be replenished. At this time, the lever 26 is locked in the hole 28 so that the recording unit 17 is stable in the intermediate drawing position. By releasing the lever 26 from the hole 28 by the release lever 27, the entire recording unit 17 can be pulled out of the machine. In other words, the recording unit 17 can be pulled out by operating the release lever 27 with the intention of the operator to pull the entire recording unit 17 out of the main unit. Therefore, for example, during transportation or movement, even if the recording unit 17 is accidentally pulled out of the main body apparatus due to vibration or the like, the lever 26 is prevented from coming off at the intermediate pull-out position locked in the hole 28. You won't fall out of it. Further, even when considering toner replenishment, which may occur more frequently than when replacing the photoconductor, etc., the toner tank 19 is exposed outside the machine and is stabilized in a state in which replenishment is possible. It is not necessary to consider the above, and it is not necessary to operate the release lever 27, which facilitates the toner replenishment work.

By the way, the transfer charger 11 arranged in the vicinity of the recording photoconductor belt 3 serves as one image forming unit, and the cleaning device 16 mainly including the cleaning roller 29 contacting the photoconductor belt 3 serves as another image forming unit. As shown in FIG. 3, the transfer device 11 and the cleaning device 16 are inserted into and removed from the main body device in a direction orthogonal to the insertion / removal direction of the recording material unit 17. Is formed, and guide pieces 32 and 33 are provided. Here, the transfer charger 11 is composed of a frame 34 and the like as shown in FIG. 4, but the end blocks 35 at both ends thereof have projections 36 directed toward the photoconductor belt 3 outside the region of the photoconductor belt 3. Has been formed. On the other hand, as shown in FIG. 5, the cleaning device 16 includes a cleaning roller 29, a frame 37, an end plate 38, and the like. The lower end of the end plate 38 is directed toward the photosensitive belt 3 side outside the photosensitive belt 3 region. Projection 39 is formed. These projections 36 and 39 project so that they can be locked to the support plate 18 of the recording unit 17 inserted and set at a predetermined position.

FIG. 6 is a plan view, in which arrow A indicates the recording medium unit 17, arrow B indicates the transfer charger 11, and arrow C indicates the drawing direction of the cleaning device 16. Further, 40 is a main body side plate, and 41 is a guide member.

In such a configuration, the recording unit 17 is inserted into a predetermined position of the main body device in FIGS. 1, 2A, 3A, and 6, and the transfer charger 11 and the cleaning device are shown. 16 and the like are also maintained in an optimum positional relationship with the photoconductor belt 3 in the image forming process. In such a state, even if the transfer charger 11 is pulled out from the main unit for maintenance of the transfer charger 11, for example, the projection 36 formed on a part of the transfer charger 11 as shown in FIG. The transfer charger 11 is locked to the regulating portion 18a of the support plate 18 located at the set position, and the transfer charger 11 cannot be pulled out from the main body device. The same applies to the cleaning device 17, and its withdrawal is prohibited by the engagement between the protrusion 39 and the restriction portion 18b of the support plate 18. As described above, when the photoconductor belt 3 is located at the predetermined position, the transfer charger 11 and the cleaning device 16 cannot be pulled out, so that the photoconductor belt 3 is not damaged.

Then, as shown in FIG. 3B, when the recording body unit 17 is pulled out from the main body device, the support plate 18 does not exist in the pulling direction of the transfer charger 11 and the cleaning device 16, and the protrusions 36 and 39 are formed. Since it is not regulated by the support plate 18, the transfer charger 11 and the cleaning device 16 can be pulled out in such a state. At this time, there is no problem because the photosensitive belt 3 is not present in the vicinity. Further, when the recording body unit 17 is pulled out, the photoconductor belt 3 and the cleaning roller 29 are in contact with each other, but the photoconductor belt 3 is not damaged because the contact direction is the same as during image formation.

Further, even if the recording unit 17 is inserted first after the maintenance, the projections 36 and 39 located at the back are locked to the support plate 18 even if the recording unit 17 is inserted first. 11 and the cleaning device 16 cannot be inserted. After all, the transfer charger 11 and the cleaning device 16 have to be inserted and set first, and the photoreceptor belt 3 is not damaged even when it is inserted.

[0013]

[Effect of device]

 As described above, the present invention provides a recording body unit in which a developing device including a developer accommodating portion and a recording body are sequentially arranged to integrally form a unit, and the developing device is arranged in front of the recording medium unit. It is provided so that it can be inserted into and removed from the main unit, and an engaging portion is formed in a part of the recording unit, allowing movement of the recording unit in the inserting direction and preventing the engaging in the pulling-out direction. A locking member for locking is provided in the main body device, and a releasing member for releasing the locked state of the locking member with respect to the engaging portion is provided, and the engaging portion is provided by the recording unit to the entire main body of the developing device. Since the recording body is positioned so that it is exposed to the outside of the apparatus and engages with the lock member at an intermediate position inside the main body apparatus, the release member is operated to unlock the lock by the lock member. Meaning to remove It is possible to prevent the risk that the recording unit may accidentally fall out of the machine when carrying or moving the device, etc. In addition, since the entire developing unit of the recording unit is exposed from the main body device when the engaging portion and the lock member are engaged, the toner can be easily replenished. In addition, since the recording body is located inside the main body device, there is an effect that there is no danger of damaging the recording body when the developer is replenished, and it is safe.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention.

FIG. 2A is a side view of the recording unit in an inserted state,
(b) is a side view of the pulled-out state.

FIG. 3 (a) is a side view of a main part in an inserted state, and FIG. 3 (b) is a side view of the part in a pulled-out state.

FIG. 4 is a perspective view of a transfer charger.

FIG. 5 is a perspective view of a cleaning device.

FIG. 6 is a plan view.

[Explanation of symbols]

 3 recording medium 6 developing device 17 recording medium unit 19 developer accommodating portion 26 locking member 27 releasing member 28 engaging portion

Claims (1)

[Scope of utility model registration request] 1. A recording medium unit in which a developing device including a developer accommodating portion and a recording medium are sequentially arranged to integrally form a unit, and the recording medium unit is provided in the main body device with the developing device as the front side. A locking member which is provided so as to be insertable and removable so that an engaging portion is formed in a part of the recording unit and allows the engaging unit to move in the inserting direction of the recording unit and locks the retaining unit in the pulling direction. Is provided in the main body apparatus, and a release member for releasing the locked state of the lock member with respect to the engaging section is provided, and the engaging section exposes the entire developing unit to the outside of the main body apparatus. At the same time, the recording device is provided so as to be positioned so as to engage with the lock member at an intermediate position in the main body device.