JPH0350565A - Image forming device - Google Patents

Abstract

PURPOSE:To prevent a foreign matter from dropping between a copying device and a detachable device and entering into the devices by providing a projecting part which protrudes more than an exterior surface and has recessed cross-sectional shape between the copying device and the detachable device. CONSTITUTION:The image forming device is provided with the detachable device 2, such as a large capacity paper feeding device, which can be attached to and detached from the device main body 1, and the projecting parts 1a and 2a which protrude more than the exterior surface and have recessed cross-sectional shape are provided in a gap between the device main body 1 and the detachable device 2. Namely, the projecting part 2a of the large capacity paper feeding device 2 is constituted below the projecting part 1a of the copying device 1 side so as to overlap. In such a state, the foreign matter such as a paper clip or dust falling from above does not drop between the devices 1 and 2 but is gathered in the recessed part of the projecting between the devices 1 and 2 and entering into the devices 1 and 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an entire apparatus in which sub-devices etc. can be attached to and detached from a main apparatus, such as a paper feeding and transfer paper processing apparatus for a copying apparatus C, for example. .

[Prior Art] When a part of a conventional image-forming device has a part that can be attached to and detached from a copying device, the attachment and detachment is done through a latch (claw) part on the attaching/detaching side and a hole part that engages with the latch on the copying machine side. It is often carried out between

[Problem to be solved by the invention] However, in the above conventional example, a foreign object (
It was difficult to remove any fallen items (clips, dirt, etc.). Further, when the attachment/detachment device is removed from the copying machine for the purpose of removal, the foreign matter that was between the two devices may fall further, and instead of being removed, may enter the inside of the device and cause a failure of the device.

In addition, although it is not removable, there are examples in which a sponge-like member is provided to prevent foreign matter from entering the gap between the exterior surface of the copying device and the device attached to it (NP4000M auto color changer), but the sponge member is In addition to being exposed to water and damaging the appearance, foreign matter and dirt accumulated on the top of the sponge
The disadvantage was that it was difficult to clean.

[Means for Solving the Problems (and Effects)] According to the present invention, a protrusion with a concave cross section protruding from at least one exterior surface is provided between the device main body and the attachment/detachment device, thereby preventing foreign matter from entering between the devices. This prevents them from falling or entering the equipment.

Further, by making a part of the concave projection part openable or openable, it is possible to easily remove and clean what has accumulated inside the concave part.

[Example 1] FIG. 1 is a drawing showing the features of the invention. 1 is an image forming apparatus main body (copying apparatus), 2 is a large-capacity paper feeding device, and 3 is a transfer paper processing device. The large-capacity paper feeding device 2 has four paper feeding units: a top tier 4, an upper tier 5, a middle tier 6, and a lower tier 7. The lower part 7 is positioned with respect to the copying apparatus 1 by a bin 8 and then connected with a bolt 9 and a nut 10. The uppermost tier 4, the upper tier 5, and the middle tier 6 are configured to be able to slide to the right with respect to the lower tier 7 in a unified manner. By operating the release arm 11 on the right side of the middle section, the latch with the lower section 7 is released and the slide becomes possible.

Further, the handle 12 of the transfer paper processing device 3 is engaged with the copying device 1, and by rotating the handle 12 counterclockwise, the transfer paper processing device 3 can be pulled out to the left and released.

The overall flow of copy paper is for each stage 4 to 7 of the large-capacity paper feeder 2.
After the sheets are selectively separated one by one from the sheet, the sheets pass through the respective transport buses and join together on the way, until the leading end is abutted against the registration roller 13 of the main body of the copying apparatus. After that, the paper passes through the image forming process and is transferred to the transfer paper processing device 3 and loaded. In this flow of copy paper, if a paper jam occurs at or near the boundary between the copying device 1 and the large-capacity paper feeder 2 or 1 and the transfer processing device 3, the large-capacity paper feeder 2 The paper jam is cleared by releasing the upper part of the transfer processing device 3 or the transfer processing device 3 to the left or right.

Figure 2 is an enlarged view of a portion showing the features of the present invention. A large capacity paper feeder 2 is installed at the bottom of the protrusion 1a on the side of the copying device 1.
The protrusions 2a are overlapped with each other.

In this state, foreign objects such as clips and dust from above do not fall between the devices, but are collected in the recesses of the projections 1a. In addition, in the case of a paper jam as described above, if the upper part of the large-capacity paper feeder 2 is pulled out to the right, the two protrusions will no longer overlap as shown in Figure 3, but each protrusion may contain foreign objects. Since it prevents falling, it also prevents foreign objects from falling between devices due to vibrations, shocks, etc. caused by attachment and detachment.

Furthermore, although FIG. 4 is a perspective view, the front wall of the concave projection is open. Foreign objects and dirt that have fallen or accumulated in the recess can be easily cleaned and removed by moving them toward the front.

[Other Embodiments] Although the above embodiments have described the attachment and detachment between the copying device and the paper feeding device, the same applies to the attachment and detachment between the copying device and the transfer paper processing device. Furthermore, similar effects can be obtained not only in copying machines but also in other devices that can be attached to and detached from the main unit.

Furthermore, in the above embodiments, the wall on the front side of the protrusion is opened to make it easier to clean and remove accumulated dirt, etc., but this is not limited to the front side, but the back side, side, and bottom are opened. Good too. Moreover, it does not have to be a completely open type, but may be attached with a lid that can be opened.

[Effects of the Invention] As explained above, by providing a protrusion with a concave cross section that protrudes from the exterior surface between the copying device and the attachment/detachment device, it is possible to prevent foreign objects from falling between the devices or entering the device. There is. Also, by making part of the projection part openable or openable, cleaning and removing foreign matter is facilitated.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an image forming apparatus embodying the present invention; Figure 2 is an enlarged view of the gap between the copying device and the paper feeding device. Figure 3 is an operational diagram of the gap between the copying device and the paper feeding device. Figure 4 is a perspective view of the protrusion. 1... Copying device 2...Large capacity paper feeder 3...Transfer paper processing device 1a... Copying device side protrusion 2a...Large capacity paper feeder protrusion Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. In an image forming apparatus constituted by an apparatus main body and a detachable device that can be attached to and detached from the apparatus main body, a concave cross-section protruding from at least one exterior surface is provided in a gap between the device main body and the detachable device. An image forming apparatus characterized by being provided with a protrusion. 2. An image forming apparatus characterized in that both the apparatus main body and the attachment/detachment device have the concave protrusion, and the two protrusions are located in a vertically overlapping position. 3. An image forming apparatus characterized in that a part of the concave projection can be opened or closed.