JPH0367872A - Image forming device - Google Patents

Abstract

PURPOSE:To easily further efficiently remove a jammed transcription sheet by supporting one part halfway a lower part side guide member, which constitutes a conveying path, turnably to the lower. CONSTITUTION:In the case of conveyed paper staying with a jam generated in a conveying path 30, first a front cover 48 is opened, next a handle 44, pro vided in a movable part 30b1 of a guide member 30b, is nipped by one hand and pulled downward, and the movable part 30b1 is turned the lower with a hinge 43 serving as a supporting point. The movable part 30b1, with its free end edge attached to one part of an accumulating part 35, is supported in a tilt condition. By the operation thus performed, a part halfway the conveying path 30 is large opened, while because the movable part 30b1 is turned to the lower, the conveying path is left as holding its opened condition even when the hand is detached from the handle 44. Accordingly, the paper, jammed in the conveying path 30, can be easily and efficiently removed by freely using both the hands.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) This invention provides an image that can be transferred to a transfer material (paper) multiple times, such as double-sided copying or superimposed copying. The present invention relates to a forming device.

(Prior Art) In this type of image forming apparatus, for example, an electronic copying machine,
After the image is transferred to the transfer target in the image forming section, the transfer target material is accumulated in the accumulation section through a conveyance path consisting of a pair of vertically spaced and opposing guide members, and the accumulated transfer target is The material is again conveyed to the image forming section to transfer the image.

By the way, while the transferred material is being conveyed, the transferred material may jam and become jammed in the middle of the conveying path.
is rotated upward about one side edge as a fulcrum to open the conveyance path in the middle, and by such an operation, the clogged transfer material is removed from the conveyance path.

(Problem to be Solved by the Invention) However, when the guide member on the second part side that configures the conveyance path in this way is rotated upward to remove the transferred material, the guide member rotating upward is The transfer material must be supported in an opaque or one hand, and the material to be transferred must be pulled out with the other hand while maintaining this state, which means that both hands cannot be used, making the work cumbersome and inconvenient to handle. there were.

This invention was made with attention to these points, and its purpose is to keep the conveyance path open without supporting the guide member by hand, and to remove the transferred material stuck inside with both hands. The object of the present invention is to provide an image forming device that can be used freely and removed easily and efficiently.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention transfers an image onto a transfer material in an image forming section, and then vertically moves the transfer material. The material to be transferred is accumulated in a stacking section through a conveyance path composed of a pair of guide members facing each other at a distance, and the accumulated transfer material is conveyed again to the image forming section to transfer the image, wherein the conveyance path is A part of the guide member on the lower side of the structure is supported so as to be rotatable downward.

(Function) In such a configuration, when the transfer material jams and becomes jammed in the conveyance path, the lower guide member constituting the conveyance path is rotated downward about the hinge. This operation opens the transport path widely, and since the guide member rotates downward, it remains open even if you let go of the guide member, allowing you to use both hands freely for transport. The transferred material stuck in the path can be easily and efficiently removed.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figures 3 to 5 show the overall appearance of an electronic copying machine as an image forming apparatus. In the figure, 1 is the copying machine main body, and a document feeding device 2 that also serves as a document cover is provided on the top surface of the copying machine main body 1. Further, a conveyance device 3 for conveying paper as a transfer material is provided on the lower surface side of the copying machine main body 1.

As shown in FIG. 2, inside the copying machine main body 1, a photosensitive drum 4 constituting an image forming section is provided, and the surface of the photosensitive drum 4 is charged by an electric device 5. ,
Thereafter, the image of the document is subjected to slit exposure at the exposure section ph, so that an electrostatic latent image is formed on its surface. The electrostatic latent image formed on the surface of the photosensitive drum 4 is formed by toner being deposited by developing units 6a and 6b, each of which contains red or black toner, and which is selectively driven as necessary. Visualized.

On the other hand, sheets are taken out one by one from the selected upper paper feed cassette 10a or lower paper feed cassette 10b, guided through paper guide paths 11a and 1 lb to a pair of registration rollers 12, and from this pair of registration rollers 12 to a photosensitive drum 4. The image is sent to the transfer section on the outer periphery of the image.

The paper sent to the transfer section comes into close contact with the surface of the photosensitive drum 4 at the transfer charger 15, and the toner image on the photosensitive drum 4 is transferred by the action of the transfer charger 15. The transferred paper is electrostatically peeled off from the photosensitive drum 4 by the action of the peeling charger 16 and sent to the fixing section 18 via the conveyor belt 17, where it is transferred via the fixing roller 9. The toner image is fixed. The sheet after fixing is sent out from the fixing unit 18 through a pair of sending rollers 20, and after the transfer, the residual toner on the surface of the photosensitive drum 4 is removed by a cleaner 21, and the residual image is further erased by a static elimination lamp 22. It is set to return to the initial state.

A conveying device 3 provided on the lower surface side of the copying machine main body 1 has a function for distributing the sheets sent out from the pair of delivery rollers 20 into the inside of the conveying device 3 and ejecting them to the outside of the conveying device 3. A gate 25 is provided, and a pair of delivery rollers 26 is provided near the gate 25, and the paper guided to the pair of delivery rollers 26 by the gate 25 is transferred to the outside of the conveying device 3. The paper is discharged to a paper discharge tray 27 provided.

In addition, the sheets taken into the transport device 3 by the gate 25 are guided to a transport path 30, and a plurality of roller pairs 3], 32, 33, 34 are arranged along the longitudinal direction of the transport path 30. are provided at a predetermined interval between the rollers 30 and 30, and the paper guided to the conveyance path 30 is sequentially conveyed by these roller pairs 31 to 34, and is stored in a stacking section 35 provided below the conveyance path 30 from the tip end thereof. It has become.

The stacking section 35 is provided with a take-out roller 37, and the paper stored in the stacking section 35 is taken out by the take-out roller 37.

Then, the sheets taken out from the stacking section 35 are sent to the guide section 39 via a separation roller 38 that separates and conveys the sheets one by one. This guide section 39 is composed of a pair of guide members 39a, 39b facing each other and spaced apart from each other, and above this guide section 39 is a pair of delivery rollers 40a.
, 40b are provided, and the paper is sent to the guide section 39 via the separation roller 38, and further sent out from this guide section 39 into the copying machine main body 1 via the delivery roller 40, and the sent paper is sent to the guide path 4. ] to the pair of registration rollers 12.

The conveyance path 30 is constituted by a pair of guide parts tt30a and 30b that face each other and are spaced apart from each other in the vertical direction. Of these guide parts +4'30a and 30b, a section g in the middle of the guide part $4'30b disposed on the lower side is supported as a movable part 30b1 so as to be rotatable downward via a hinge 4343. .

A handle 44 for operation is attached to two surfaces of the free end side of this movable portion 30b1, and
Under normal conditions, the locking mechanism 45 is engaged as shown by the solid line in FIG.
It is removably locked and held in a horizontal position.

An opening 47 is formed in the front surface of the transport device 3. A front cover 48 is rotatably attached to the opening 47 via hinges 49, 49, and the opening 47 is formed at the lower end of the inner surface of the front cover 48. A stopper 50 is attached so as to protrude inside the portion 47.

During double-sided image formation, the gate 25 rotates upward, and the paper P on which the image of the first document is formed on one side is introduced into the conveyance path 30 through the gate 25. υ1 is sequentially transferred into the accumulation section 35 through this conveyance path 30.
: Issued and collected.

Then, the sheets P accumulated in the stacking section 35 are taken out via the take-out roller 37, separated one by one by the separation roller 38, and sent to the guide section 39.
from the guide path 4 in the copying machine main body 1 through the delivery roller 4o.
It is sent inverted to 1.

Thereafter, the paper P is aligned by the pair of registration rollers 12 and is again sent between the photosensitive drum 4 and the charging device 5, so that the image of the second document is formed on the other side. The paper P on which images have been formed on both sides in this manner is sequentially passed through a conveyor belt 17, a fixing roller 9, a delivery roller 20, a gate 25 for sorting, and a pair of delivery rollers 26, and then passed through a paper output tray 27.
is discharged.

By the way, if the paper P being conveyed in this way jams and becomes jammed in the conveyance path 30, first open the front cover 48 and then open the movable guide member 30b, as shown by the confusion in FIG. A handle 44 provided on the portion 30b.
is grasped with one hand and pulled downward, and the movable part 30b is rotated downward about the hinge 43. Then, the free end edge of the movable part 30b is brought into contact with a part of the accumulation part 35, and the movable part 30b
1 is supported in an inclined state. By such an operation, the middle of the conveyance path 30 is largely opened, and since the movable part 30b is rotated downward, the open state is maintained even if the handle 44 is released, so that both hands are free. By using this, paper P stuck in the conveyance path 30 can be easily and efficiently removed. Furthermore, the movable part 301)l can be rotated within the space previously secured as the accumulation part 35 in the transport device 3, and therefore has the advantage that it is not necessary to provide a dedicated space for it.

After the paper P has been removed, the movable portion 30b1 is pulled up and engaged with the locking mechanism 45, and the front cover 48 is closed in this state. At this time, if you forget to pull up the movable part 30b1 and leave the middle of the conveyance path 30 open, when you try to close the front cover 48, the stopper 50 inside it will come into contact with the handle 44 of the movable part 30b1. ,]0 Due to this contact, it becomes impossible to close the front cover 48, and as a result, the user realizes that he/she has forgotten to pull up the movable part 30b, and therefore, the movable part 30b1 is not left rotated. always moving part 30b,
is returned to its normally closed state.

In the above embodiments, the explanation was given for the case where images are copied on both sides of the paper, but the invention is not limited to this. The present invention is also applicable to devices that allow multiple copies of images. In addition, various modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As explained above, according to the present invention, after an image is transferred to a transfer material in the image forming section, the transfer material is formed of a pair of guide members facing each other and spaced apart from each other in the vertical direction. In the apparatus for transferring the image, the accumulated transfer materials are conveyed again to the former image forming section to transfer the image. Since a part of the guide part is supported so as to be rotatable downward, if the transfer target jams and becomes clogged in the conveyance path while the transfer target material is being conveyed, the guide part on the lower side can be moved downward. This has the effect that the transferred material can be easily and efficiently removed using both hands freely.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a block diagram of the main parts, FIG. 2 is a block diagram showing the internal structure of an electronic copying machine, and FIG.
The figure is a perspective view showing the external appearance of the electronic copying machine, Figure 4 is a perspective view of the electronic copying machine with the front cover open, and Figure 5 is a perspective view of the electronic copying machine with the transport path opened. It is a diagram. 4... Photosensitive drum (image forming section), 30... Conveyance path, 30a, 30b... Guide member, 35... Accumulating section.

Claims (1)

[Claims] After the image is transferred to the transferred material in the image forming section, the transferred material is accumulated in the accumulation section through a conveyance path consisting of a pair of vertically spaced and opposing guide members, and the accumulated transferred material is The material is conveyed to the image forming section again to transfer the image, wherein a part of the guide member on the lower side constituting the conveyance path is supported so as to be rotatable downward. Forming device.