JP3023708B2 - Copier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention ensures that a recording sheet is discharged outside a copying apparatus at a recording sheet discharge section of a copying apparatus, and that a jammed paper at the discharge section can be easily removed. It concerns the device.

[0002]

2. Description of the Related Art In general, a low-speed or medium-speed copying apparatus is often installed in an office or the like in view of its usefulness as compared with a large-sized high-speed copying apparatus. In this case, a small-sized copying machine having no installation area is required to be installed in a small office room. Due to the structure of the copying apparatus, the most common method is to discharge the recording paper to a paper discharge tray provided outside the frame of the copying apparatus, and to take out the recording paper. In general, a method of discharging the paper to the outside of the frame of the copying apparatus up to the end is used. However, the recording paper is B4 rather than the small B6 plate.
Or, A3 size large paper is most often used, and the output tray is also manufactured to the size of the largest B4 or A3 size,
It is necessary to secure an area for installing the copying apparatus by the area of the sheet discharge tray. In order to solve such an inconvenience, a part of the copying apparatus is formed as a paper discharge tray, and only a part of the recording paper is discharged to the paper discharge tray to secure a discharge state. The output tray can be made smaller and the installation area can be reduced.

However, in many cases, a sorter is additionally provided in such a copying apparatus to improve the function of the copying apparatus, and also in a low-speed or medium-speed copying apparatus. In this case, if a paper receiving tray is formed in the copying apparatus as described above,
Only the leading edge of the recording paper is discharged outside the copying apparatus, and most of the recording paper remains in the copying apparatus, and is not discharged to the end of the recording paper. In general, as a sorter structure, recording paper is discharged outside the copying apparatus and then received and received and sorted and distributed.When a commercially available sorter is purchased and attached to the copying apparatus, the recording paper is discharged. The stopped recording paper stops at the discharge tray and is not conveyed to the sorter. Therefore, it is necessary to attach a special transport device to the sorter to receive the recording paper in the sorter. However, the device attached in this way requires a special processing for the sorter, the mechanism is complicated, and the sorter itself has a drawback of increasing the size.
Further, there is a disadvantage that smooth conveyance of the recording paper becomes difficult.

[0004]

SUMMARY OF THE INVENTION The present invention has been specifically conceived to remedy the above disadvantages. That is,
According to the present invention, in order to reduce the size of the copying apparatus, a transport unit for transporting the recording paper passing through the fixing device to the sorter is provided in a paper receiving tray provided in the copying device, and the recording paper is smoothly moved from the fixing device to the sorter. By being configured to be transported to
If the above disadvantages are solved and recording paper conveyance failure occurs,
In this case, the purpose is to make it possible to easily recover the transport failure.
Target.

[0005]

The object of the present invention is as follows .
The copying machine main body can be divided into an upper frame and a lower frame,
In a copying apparatus having a space from a fixing unit to an exterior part of the copying apparatus, a recording paper conveying unit is detachably provided on the upper frame and the lower frame at the position of the space. > Achieved by a copying machine characterized by the fact that

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention;

FIG. 1 is a block diagram of the entire copying apparatus. 1 is a photosensitive drum, 2 is a band electrode for applying a constant charge to the entire surface of the photosensitive drum 1, 3 is a developing device having a toner replenishing unit 4,
Is a cleaning device provided with a cleaning blade 6 for removing the residual toner from the photosensitive drum 1. The above device is manufactured as an integral structure and is detachably provided on an upper frame 7a of the copying machine 7. Further, on the upper frame 7a, a platen glass plate 8 for placing a document, and a platen glass plate 8
A document holding plate 9 for pressing and holding the document when the document is placed thereon, and a lower portion of the platen glass plate 8 within the upper frame 7a, each of which is guided by a guide rail (not shown) to a dashed line position. An exposure lamp 10 that moves, a first reflection mirror 11 that moves integrally with the exposure lamp 10, and integral V-type mirrors 13 and 14 that project light received by the first reflection mirror 11 onto a focus lens 12.
Further, a fixed mirror 15 for irradiating the surface of the photosensitive drum 1 to form an electrostatic latent image is provided. Reference numeral 16 denotes an exhaust fan for discharging the heat generated in the copying apparatus to the outside. The suction fans 17 and 18 are provided, and the suction port 17 is used for discharging toner scattered from the developing device 3 and ozone generated from the band electrode 2. It is discharged to the outside through the removal filter F. On the other hand, the exposure lamp 10 generated in the optical system above the suction port 18 formed in the light shielding plate 7b for shielding the optical system.
Is configured to discharge the heat of the outside. The V-shaped mirrors 13 and 14 are moved by a guide rail (not shown) half the distance of the moving distance of the exposure lamp 10 so that the optical path length between the original and the surface of the photosensitive drum 1 is always constant. I have.

Reference numeral 24 denotes a paper feed cassette provided under the lower frame 7c of the copying apparatus 7 and containing the recording paper P. The recording paper P provided in the paper feed cassette 24 is pressed by a spring 25 via a pressing plate 26. The top portion of the recording paper P is fed up by the half-moon-shaped feeding roller 27 and the conveying roller 28 is fed up.
Then, the sheet is conveyed to the second sheet feed roller 30 by the guide unit 29. The second paper feed roller 30 operates so that the recording paper P once stopped by the second paper feed roller 30 coincides with the toner image developed on the surface of the photosensitive drum 1 by the developing device 3. 31 is a transfer pole for transferring the toner image formed on the surface of the photosensitive drum 1 to the recording paper P, 32 is a separation pole for separating the recording paper P on the photosensitive drum 1 side, and 33 is a transfer pole for the recording paper P. Is a fixing device for fixing the formed toner image. 33a is the fixing device 33
The recording sheet P is discharged to a discharge tray 34 in the copying apparatus 7 by a discharge roller for discharging the recording sheet P. Lower frame 7
In c, a one-sheet manual feeding device 35 and a multi-sheet manual feeding device 36 are provided, each of which is provided so as to be fed by a half-moon-shaped feeding roller 37.

Reference numeral 38 denotes a fixing device 33 which receives the recording paper P discharged by a discharge roller 33a after the toner image on the recording paper P is fixed,
An auxiliary transport device for discharging paper out of the frame of the copying apparatus 7, and is provided in the paper discharge tray 34. The auxiliary transport device 38
Are composed of upper and lower frame members 39 and 40, respectively, and are separately mounted in the space of the discharge tray 34. As a mounting method, any method such as fixing with screws or a slide mounting structure using protrusions and grooves may be used. As shown in FIG. 1, the frame members 39 and 40 may be a pair-structure method. As shown in FIG. 1, the frame bodies 39 and 40 are provided with conveying rollers 41, 42 and 43 so as to form a pair, and are provided so as to interlock with the drive system 44 of the copying apparatus 7. Reference numeral 45 denotes a sorter in which a receiving port 46 for receiving the recording paper P discharged from the auxiliary transport device 38 provided in the copying apparatus 7 and a plurality of discharge trays 47 are vertically arranged, and according to the discharge of the recording paper. An ascending discharge tray moving frame 48 is provided. Reference numeral 49 denotes a driving member for moving the discharge tray moving frame 48 up and down.

The present invention is constructed as described above. In FIG. 1, a copying start button (not shown) of the copying apparatus 7 is pressed to start copying. First, the exposure operation of the original placed on the original platen glass 8 is started by the exposure lamp 10 as described above. At the same time, the surface of the photosensitive drum 1 is charged by the band electrode 2, the original image is reflected from the fixed mirror 15 via the optical system by the exposure, and the surface of the photosensitive drum 1 is exposed to obtain an electrostatic latent image.
Next, after the developing device 3 develops the toner, the electrostatic latent image is formed into a toner image by toner, and is fed by the feed roller 27 and is waiting at the second feed roller 30. , The recording paper P is fed so as to coincide with the toner image, and the toner image is transferred to the transfer pole 31. Next, the recording paper P
Is separated from the surface of the photosensitive drum 1, and the fixing device 33 fixes the toner image on the recording paper P. The recording paper P is discharged to the auxiliary conveyance device 38 by a discharge roller 33a, and is recorded by a pair of conveyance rollers 41, 42, and 43 rotating in the paper discharge direction by a driving source 44 rotated by a power source of the copying apparatus 7. The paper P is discharged out of the copying apparatus 7. The discharged recording paper P is received at a receiving port provided in the sorter 45.
The control unit provided in the copying apparatus 7 receives the recording paper P from the uppermost stage of the paper discharge tray 47 of the sorter 45 to the drive member 49 at the reception port 46, discharges the recording paper P, and copies many copies. When the operation is performed, the discharge tray 47 is raised by one step by the driving member 49 and is sequentially discharged. In the case where the recording paper P has a conveyance failure between the fixing device 7 and the auxiliary conveyance device 38, as shown in FIG. 2, the recording paper P of the fixing device 33 and the auxiliary conveyance device 38 with the upper frame 7a as one support shaft. The discharge passage for P is greatly opened. At this time, the auxiliary transport device 38 is provided separately on the upper frame 7a and the lower frame 7c. When the upper frame 7a is opened, the path of the recording paper P is completely opened, and the recording paper P with poor transport is opened. Can be easily taken out.

When only the copying apparatus 7 is used without using the sorter 49, the auxiliary transport device 38 is removed from the paper receiving tray 34 so that the paper receiving tray 34 provided in the copying apparatus 7 can be used. To In this case, the paper discharge tray (not shown) attached to the copying apparatus 7 may be small, and the installation area of the copying apparatus 7 can be reduced.

[0012]

As described above, according to the present invention, the paper receiving tray 34 is provided in the copying apparatus 7 so that the paper discharging tray is usually made small, and
When a sorter or the like is used, an auxiliary transporting device 38 is attached so that the recording paper P can be reliably ejected outside the copying device 7 to enable the use of the sorter. When the upper frame 7a of the apparatus 7 is opened to take out the recording paper P having a poor conveyance, the auxiliary conveyance device 38 is also simultaneously opened from the passage of the recording paper P to enable the recording paper P to be taken out. Of the overall area of the recording paper P
There are excellent effects such as ensuring the conveyance of the recording paper and simplifying the processing of the recording paper.

[Brief description of the drawings]

FIG. 1 is a sectional view in which a sorter is attached to a copying apparatus. FIG. 2 is a sectional view in which the upper frame of the copying machine is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Photoreceptor drum 2 ... Band electrode 3 ... Developing device 5 ... Cleaning device 8 ... Original glass plate 24 ... Paper feed cassette 27 ... Paper feed roller 33 ... Fixing device 38 ... Auxiliary transport device 39,40 ... Frame body 45 ... Sorter 46… Reception entrance 47… Eject tray

Claims (1)

(57) [Claims] 1. A copying apparatus in which a copying apparatus main body can be divided into an upper frame body and a lower frame body, and has a space from a fixing section to an exterior part of the copying apparatus. A copying apparatus characterized in that a recording paper conveying means is detachably provided on an upper frame and a lower frame.