JPH019956Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a recording device equipped with an endless recording medium.

FIG. 1 is a schematic diagram of a conventional recording apparatus of this type.

Belt-shaped recording body 1 processed into an endless shape
Although not shown, there is a base layer made of a thermoplastic synthetic resin such as polyester, a conductive layer made of an aluminum vapor-deposited film formed on the top surface of the base layer, and an inorganic layer formed on the surface of the conductive layer. It is composed of a photosensitive layer made of a photoconductive material or an organic photoconductive material, and has a driving roller 2 and a driven roller 3.
It is passed between. The drive roller 2 has a fixed shaft in order to maintain a constant gap between it and the developing sleeve 4 facing it, and is connected to a drive motor (not shown). On the other hand, the shaft of the driven roller 3 is of a movable type in order to apply a predetermined tension to the recording medium 1.
A predetermined tension is applied to.

Around the recording medium 1, along the clockwise rotation direction thereof, there are a charging charger 5, an exposure device 6, a developing device 7, a paper feed roller 8, a pair of registration rollers 9, a transfer charger 10, a fixing device 11, and a static elimination charger 1.
2. Cleaning devices 13 are sequentially arranged. 14 is a cassette that stores the transfer paper 15 and is removable from the apparatus main body 16; 17 is a pair of paper ejection rollers;
18 is a tray.

The surface of the recording medium 1 having a photosensitive layer on its outer surface is uniformly charged to a predetermined polarity by the charging charger 5, and then in the exposure device 6, the surface of the recording medium 1 is irradiated with light reflected from the document surface. , an electrostatic latent image is formed according to the image to be recorded. This electrostatic latent image is visualized as a toner image by the adhesion of the developer 19 contained in the developing device 7. This toner image is transferred by a transfer charger 10 to a transfer paper 15 that is fed from a cassette 14 by a paper feed roller 8 and a pair of registration rollers 9 in synchronization with the image formation on the recording medium 1. Thereafter, the transfer paper 15 is separated from the recording medium 1, fixed by the fixing device 11, and then discharged onto the tray 18 by a pair of paper discharge rollers 17.

On the other hand, the potential remaining on the surface of the recording medium 1 is then erased by the static eliminating charger 12, and furthermore, the developer remaining on the surface of the recording medium 1 after transfer is removed by the cleaning device 13, and the next copying process is performed. be prepared for.

This recording apparatus is characterized by an endless recording body 1, a recording body unit having a drive roller 2 and a driven roller 3 that support and rotate the recording body 1, and a surface of the recording body 1. a developing sleeve 4 for supplying a developer 19 to visualize the latent image formed on the image;
and a developing unit having a container for accommodating developer 19, etc., are integrally connected, and this recording body unit and developing unit are connected to the recording apparatus main body 16.
It has a structure that allows it to be inserted and taken out.

If it is unitized in this way, the recording medium 1
Although it has the advantage that replacement, other repairs, and replenishment of the developer 19 are easy, and the entire recording apparatus can be made compact, it is not without its problems.

That is, since the cleaning device 13 is arranged above the recording body unit, if there is a slight vibration when replacing the recording body 1 or performing other repairs,
The developer 19 collected and held in the cleaning device 13 often falls downward. In particular, the recording unit and the developing unit are connected to the recording apparatus main body 1.
When the transfer paper 15 is pulled out from the cleaning device 6, its conveying device is exposed directly below the cleaning device 13. The developer 19 that has fallen from the cleaning device 13 adheres to the unused transfer paper 15, paper feed roller 8, registration roller pair 9, transport guide member (not shown), etc., and as a result, the transfer paper 15 This will stain the recorder and cause a decline in recording quality. Further, when the recording unit and the developing unit are moved, the developer 19 floats inside the recording apparatus main body 16 and adheres to the transfer paper 15, causing the same problem as described above.

An object of the present invention is to eliminate such drawbacks of the prior art and to provide a recording device that has high recording quality and has less dirt inside the device.

In order to achieve this object, the present invention includes a recording body unit having an endless recording body and a plurality of rollers that support and rotationally drive the recording body; A developing unit having a developing sleeve for supplying a developer to visualize the latent image formed on the surface of the recording medium, and a container for accommodating the developing sleeve and the developer; a cleaning device for removing developer remaining on the surface of the recording medium after transfer; and a transfer material and a transfer material conveying device disposed below the recording medium unit and the developing unit; and a recording apparatus having a structure in which a developing unit can be inserted into and pulled out from a main body of the recording apparatus, characterized in that a cover member is disposed between the recording body unit, the developing unit, and the transfer material conveying device. do.

Next, an embodiment of the present invention will be described with reference to the drawings. 2 to 6 are diagrams for explaining the first embodiment of the present invention.

As shown in FIG. 2, the endless recording medium 1 is stretched between a driving roller 2 and a driven roller 3 as in the conventional case, and around the endless recording medium 1, a charging device 5, an exposure device 6, a developing device 6, a developing device 6, device 7, paper feed roller 8, registration roller pair 9, transfer charger 1
0, a fixing device 11, a static eliminating charger 12, and a cleaning device 13 are arranged in this order.

As shown in FIGS. 3 and 4, the recording body unit 20 includes an endless recording body 1, a driving roller 2 and a driven roller 3 that support and rotate the endless recording body 1, and both ends of the rollers 2 and 3. The support plate 21 rotatably supports the. The driven roller 3 is supported by a pressure spring 2 supported by a support plate 21.
2, and a predetermined tension is applied to the recording medium 1. A top plate 23 provided on the upper part of the support plate 21 supports the upper side of the recording medium 1, and a plurality of protrusions 24 are provided at the bottom of the support plate 21.
is provided so as to protrude from the lower surface of the recording medium 1.

On the other hand, the developing device 7 (developing unit) uses developer 1.
A container 25 with a lid containing 9 and this container 25
A developing sleeve 4 rotatably supported at the lower part of the
It has The bottom of the container 25 has a receiving part 26 for supporting the recording unit 20.
Side plates 27, 27 erected from both sides of 6, respectively.
A vertical groove 28 is provided near the developing sleeve 4, and a horizontal groove 29 is provided at the tip. This vertical groove 28
As shown in FIG. 4, a bearing 30 connected to the end of the rotating shaft of the drive roller 2 is fitted and held, and this fitting connects the developing device 7 (developing unit) and the recording unit 20. , the gap between the recording medium 1 and the developing sleeve 4 is maintained constant. The horizontal groove 29 is connected to the developing device 7 (developing unit).
It functions for positioning when inserted into the device main body 16.

When the recording body unit 20 is mounted on the developing device 7, the protrusion 24 provided on the support plate 21 of the recording body unit 20 will not come into contact with the receiving portion 26 of the developing device 7 and damage the recording body 1. . The assembly of the recording unit 20 and the developing device 7 can be inserted into and pulled out from the apparatus main body 16, and as will be described later, a guide member is provided in the apparatus main body 16 for inserting and pulling out the assembly. ing.

As shown in FIG. 2, a cover member 31 is disposed between the recording unit 20 and the developing device 7, and the transfer paper conveying device including the paper feed roller 8, a pair of registration rollers 9, etc. and the cassette 14. There is. This cover member 31 is designed to have a width that covers the transfer paper conveying device and the cassette mounting section, and is removable upward within the main body 16 of the apparatus. That is, as shown in FIGS. 2, 5, and 6, a plurality of support pieces 32 are provided on both sides of the cover member 31 and protrude downward, and a cutout 33 is provided at the lower end of each support piece 32. It is formed. On the other hand, each support piece 32 is attached to the device main body 16.
By inserting the cover member 31 into the device main body 16 and fitting the notch 33 of the support piece 32 to the support pin 34, the cover member 31 can be opened. Support and positioning are performed. When the recording apparatus is assembled, the cover member 31 is stably held between the support pin 34 and the receiving portion 26 of the developing device 7, as shown in FIG.

A tunnel-shaped guide portion 35 is provided at the tip of the cover member 31 to guide the transfer paper 15 sent out from the registration roller pair 9 toward the transfer charger 10.
is integrally provided, so that the transfer paper 15 is properly fed.

When the recording medium unit 20 and the developing device 7 are taken in and out of the main body 16 of the apparatus, since the top of the transfer paper conveying device and the cassette 14 are covered with the cover member 31, the transfer paper may be damaged by the fallen or floating developer 19. 15 and the transfer paper conveyance device will not get dirty. When repairing the transfer paper conveying device, etc., when the recording unit 20 and the developing device 7 are removed from the main body 16 of the apparatus, a large space is created above the cover member 31, so next, lift the cover member 31 upward. It is only necessary to take it out from the device main body 16.

FIG. 7 is a diagram for explaining the second embodiment of the present invention, and the difference from the first embodiment is that the developing device 7
An elastic spacer 36 such as a sponge is interposed between the receiving portion 26 and the cover member 31. This spacer 36 may be fixed to the lower surface of the receiving portion 26 or the upper surface of the cover member 31 by an appropriate means such as adhesive.

FIG. 8 is a diagram for explaining a third embodiment of the present invention. In this embodiment, a leaf spring 37 is attached to the cover member 31 in place of the spacer 36 of the second embodiment.

As in the second and third embodiments, the developing device 7
By interposing the elastic spacer 36 and the plate spring 37 between the cover member 31 and the cover member 31, the cover member 31 will not shake when the recording apparatus is transported. In addition, in the case of the second embodiment and the third embodiment, the cover member 3
The guide part 35 provided in the first part does not have a tunnel shape, and the guide part 35 is composed only of the top plate.

FIG. 9 is a diagram for explaining the support structure for the developing device 7. The device main body 16 is provided with side guides 38 at a predetermined interval on the left and right, which also serve as supporting the developing device 7. Since the developing device 7 is supported by the cover member 38, the load is transferred to the cover member 31.
It doesn't apply. Further, since the side guide 38 regulates the position of the developing device 7 in the vertical and horizontal directions, the stopping position of the developing device 7 is accurate.

The present invention has the above-described configuration, and it is possible to provide a recording apparatus having high recording performance by eliminating staining of the transfer material and its conveyance device by the developer.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional recording device, FIGS. 2 to 6 are diagrams for explaining the first embodiment of the present invention, FIG. 2 is a schematic configuration diagram of the recording device, and FIG.
The figure is a side view of the recording unit and the developing device.
The figure is a perspective view of an assembly of a recording unit and a developing device.
5 and 6 are a cutaway side view and a cutaway front view for explaining the attachment state of the cover member, and FIG. 7 is a cutaway view for explaining the attachment state of the cover member according to the second embodiment of the present invention. FIG. 8 is a cutaway side view for explaining the attachment state of the cover member according to the third embodiment of the present invention, and FIG. 9 is a cutaway front view showing the support structure of the developing unit. DESCRIPTION OF SYMBOLS 1... Recording body, 2... Drive roller, 3... Driven roller, 4... Developing sleeve, 7... Developing device (developing unit), 8... Paper feed roller, 9... Registration roller pair, 13... ...Cleaning device, 14...
...Cassette, 15...Transfer paper, 16...Recording device main body, 19...Developer, 20...Recording unit, 25...Container, 31...Cover member, 32...
...Support piece, 34...Support pin, 35...Guide portion.

Claims (1)

[Claims for Utility Model Registration] (1) A recording body unit having an endless recording body and a plurality of rollers that support and rotationally drive the recording body; A developing unit having a developing sleeve for supplying a developer to visualize the latent image formed on the surface of the recording medium, and a container for accommodating the developing sleeve and the developer; a cleaning device for removing developer remaining on the surface of the recording medium after transfer; and a transfer material and a transfer material conveying device disposed below the recording medium unit and the developing unit; In the recording apparatus in which the developing unit is configured to be inserted into and pulled out from the recording apparatus main body, a cover member is disposed between the recording body unit and the developing unit and the transfer material conveying device. A recording device having a characteristic endless recording body. (2) A recording device having an endless recording body according to claim (1) of the utility model registration, characterized in that the cover member is removably installed above. (3) The endless record as set forth in claim (1) of the utility model registration claim, characterized in that a guide portion for regulating the conveying direction of the transfer material is integrally provided at the tip of the cover member. A recording device with a body. (4) In the utility model registration claim (1), a cover member support is provided below the cover member, and the cover member is held between the cover member support and the developing unit. 1. A recording device having an endless recording body.