JPH07271129A - Image forming device - Google Patents

Abstract

PURPOSE:To prevent a situation that a distance between the lower edge of a bottom part supporting stand and a floor is so small that a forklift can not be used when entire height is restrained so that operation is easily performed in a color printer provided with a transfer drum in an image forming device which is integrally constituted upward from the bottom part supporting stand placed on the floor. CONSTITUTION:The device of the color printer is integrally provided on a bottom plate 100. Casters 102 are fixed on the pedestal 101 of the bottom plate 100, and the color printer is supported by the casters 102. In the pedestal 101, a partial notch 103a is formed in an apron part 106 hanging down back and forth in figure. Therefore, a distance (b) long enough for the fork of the forklift to get in is obtained. The fork of the forklift gets in a square groove 103 and is positioned by a reinforced and stiffened part corresponding to the fork, thereby supporting the color printer. Namely, the forklift can be used and the stable transportation is secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as an electrophotographic copying apparatus and an electrostatic information recording apparatus, and, for example, a transfer apparatus for holding a transfer material and multiple-transferring a separated color image to the transfer material. The present invention relates to an image forming apparatus. Particularly, the present invention relates to an image forming apparatus provided with a bottom support suitable for transportation.

[0002]

2. Description of the Related Art Today, a multicolor image forming apparatus for a copying machine has been developed and put into practical use. Among them, an electrophotographic image forming apparatus (hereinafter referred to as printer) is generally used.

Many of these printers hold a recording material such as a paper on which an image is placed, and therefore, at least 160 m.
It has a transfer drum having a diameter of m or more, and a photosensitive drum which is in contact with the transfer drum and has the same diameter as the transfer drum and around which developing devices of respective colors are arranged. Below the area where the transfer drum and the photosensitive drum are in contact, there are several types of cassettes that contain the recording material, depending on the size of the recording material, and above the transfer drum, there are reader units that read the original image and perform image processing. Arranged and configured. Further, in these devices, the upper part of the device from the bottom support table supported on the floor is integrally configured. That is,
It has casters placed on the floor and is not intended to be placed on a desk.

[0004]

However, in the above-mentioned conventional example, the existence of the transfer drum and the diameter of the photosensitive drum are relatively larger than those of the black and white printer, so that the transfer drum and the photosensitive drum are occupied in the apparatus. Since the area is large, when the size of the device itself (especially the height from the floor surface) is set to an appropriate size (approximately 1000 to 950 mm), the space between the bottom surface of the device itself and the floor surface is relatively narrow (approximately 50 mm
Even though the weight of the device is heavy due to the large number of various mechanical elements, it was not possible to use the transportation equipment used to transport the device (hereinafter referred to as the fork of a forklift).

In addition, when the fork of the forklift is put under the device, there is a case where the fork is directly applied to the transporting wheel or the stopper due to the small space, and the fork is damaged.

[0006] In addition, when the bottom surface is raised from the floor so that the fork can be used while visually confirming it, the height of the device itself becomes high, and the operability is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image forming apparatus having a bottom support that allows the entire height of the image forming apparatus to be easily operated and at which a fork of a transportation means such as a forklift can be directly used.

[0008]

A first aspect of the present invention is to provide a bottom support which has an upright frame and a pair of flat plates which are fixed to the lower part of the frame and which have wheels or stoppers for transportation. In the image forming apparatus having the above as a structural member, a concave portion into which the transporting means of the image forming apparatus is inserted is provided inside the transporting wheel or the stopper position on the side facing the floor surface of the bottom support base. An image forming apparatus characterized by having.

According to a second aspect of the present invention, the bottom support is
The image forming apparatus according to the first aspect of the present invention is characterized in that it has a substantially box-like shape that is open to the floor, and that a side surface is provided with a recess into which a transporting means of the image forming apparatus is inserted. .

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a schematic sectional view of a color printer according to a first embodiment of the present invention.

This example has a digital color image reader section in the upper part and a digital color image printer section in the lower part.

In the reader unit, the original 30 is placed on the original table glass 31 and exposed and scanned by the exposure lamp 32, so that the reflected light image from the original 30 is condensed by the lens 33 on the full-color sensor 34, and color images are obtained. Obtain a decomposed image signal. The color-separated image signal passes through an amplifier circuit (not shown), is processed by a video processing unit (not shown), and is sent to the printer section.

In the printer section, the photosensitive drum 1 as an image carrier is rotatably supported in the direction of the arrow, and a pre-exposure lamp 11, a corona charger 2, a laser exposure optical system 3, and a potential sensor 12 are provided around the photosensitive drum 1. , Four developing devices 4y, 4c, 4m, 4BK of different colors, on-drum light amount detecting means 1
3, the transfer device 5, and the cleaning device 6 are arranged.

In the laser exposure optical system 3, the image signal from the reader section is converted into an optical signal by a laser output section (not shown), and the converted laser light is reflected by the polygon mirror 3a, and the lens 3b and the mirror. It is projected onto the surface of the photosensitive drum 1 through 3c.

During image formation in the printer section, the photosensitive drum 1
Is rotated in the direction of the arrow, the photosensitive drum 1 after the charge is removed by the pre-exposure lamp 11 is uniformly charged by the charger 2, and the light image E is emitted for each separated color to form a latent image.

Next, a predetermined developing device is operated to develop the latent image on the photosensitive drum 1 to form a toner image based on resin on the photosensitive drum 1. The developing device is an eccentric cam 24.
By the operations of y, 24c, 24m, and 24BK, the photosensitive drum 1 is selectively approached according to each separated color.

Further, the toner image on the photosensitive drum 1 is
The recording material is transferred onto the recording material supplied from the recording material cassette 7 to the position facing the photosensitive drum 1 via the transport system and the transfer device 5. In this example, the transfer device 5 includes a transfer drum 5a, a transfer charger 5b, and an attraction charger 5c for electrostatically attracting a recording material.
A recording material carrying sheet 5f made of a dielectric material in the peripheral opening area of a transfer drum 5a which has a suction roller 5g, an inner charging device 5d, and an outer charging device 5e which face each other. Is integrally stretched in a cylindrical shape. The recording material carrying sheet 5f uses a dielectric sheet such as a polycarbonate film.

As the drum-shaped transfer device, that is, the transfer drum 5a is rotated, the toner image on the photosensitive drum 1 is transferred onto the recording material carried on the recording material carrying sheet 5f by the transfer charger 5b.

In this way, a desired number of color images are transferred to the recording material that is adsorbed and conveyed to the recording material carrying sheet 5f, and a full color image is formed.

In the case of forming a full-color image, when the transfer of the four color toner images is completed in this way, the recording material is separated from the transfer drum 5a by the action of the separation claw 8a, the separation push-up roller 8b and the separation charger 5h, and the heat is generated. The sheet is discharged onto the tray 10 via the roller fixing device 9.

On the other hand, after the transfer, the photosensitive drum 1 is subjected to the image forming process again after the residual toner on the surface is cleaned by the cleaning device 6.

When images are formed on both sides of the recording material,
Immediately after the fixing device 9 is discharged, the transport path switching guide 19 is driven, and after being guided to the reversing path 21a through the transport vertical path 20, the reverse end of the reversing roller 21b causes the trailing end when fed to the beginning. Then, it is withdrawn in the direction opposite to the direction in which it was fed and is stored in the intermediate tray 22. After that, an image is formed on the other surface by the above-described image forming step.

Further, in order to prevent the powder from being scattered and adhered on the recording material carrying sheet 5f of the transfer drum 5a and the oil from being adhered to the recording material, the brush is interposed via the fur brush 14 and the recording material carrying sheet 5f. 14, a backup brush 15 facing the sheet 14, an oil removing roller 16 and a recording material carrying sheet 5
Cleaning is performed by the action of the backup brush 17 that faces the roller 16 via f. Such cleaning should be done before or after image formation, or jam (paper jam)
When it occurs, it will be done as needed.

Further, in this embodiment, the eccentric cam 25 is operated at a desired timing and the cam follower 5i integrated with the transfer drum 5a is operated, so that the gap between the recording material carrying sheet 5f and the photosensitive drum 1 is reduced. The configuration can be set arbitrarily. For example, during standby or when the power is off, the transfer drum 5a and the photosensitive drum 1 are separated from each other.

Each element of the reader section and the digital image color printer section shown in FIG. 1 corresponds to that of the printer shown in FIG.
Is supported on a standing frame made of a pair of front and rear flat plates (see side plate FIG. 5 below) having a size substantially equal to the size parallel to the paper of FIG. Is fixed to the bottom plate 100 having a uniform thickness, except for a part. That is, the structure of the frame of the printer is determined by the side plates 35 and 36 and the bottom plate 100.

At least three or more transportation wheels (hereinafter referred to as casters) 102 are attached to the base 101 of the bottom plate 100 (105 in the figure) when the thickness and the like of the bottom plate 100 are changed. In this example, casters 102 are attached to the four corners of a rectangular bottom plate 100 and a base 101, respectively. Bottom plate 100
The base 101 has an apron portion 106 that hangs in front of and behind the upper surface of the flat plate in parallel with the paper surface of FIG. 1. The apron portion 106 is provided on both sides of the base 101 on the side facing the floor surface FL. A pair of parallel rectangular grooves 103 is formed. This square groove 1
Reference numeral 03 denotes a groove-shaped member 108 fixed to the upper surface of the base 101 or the apron portion 106 over the front and rear apron portions 106.
It is formed by. Floor FL at the bottom of the square groove 103
Is larger than the distance a from the floor FL at the lower edge of the apron portion 106 of the base 101. The square groove 103 is sized to accommodate a transporting tool (fork of a forklift).

In FIG. 1, the base 101 is an example of a plate having a single thickness, but the base 101 is composed of a box-shaped member open to the ground surface side, and the boxes face each other. The same effect can be obtained by providing notches corresponding to the shape of the square groove on each surface. That is, in FIG. 2, the base 101 is box-shaped and the apron section 1 is formed.
06 is provided so as to surround the upper flat plate and the apron portion 106 is provided with the cutout 103a.

FIG. 3 is a vertical sectional view of the example shown in FIG. As shown in FIG. 3, since the notch 103a is provided, the fork fork 37 can be inserted. In addition, 104 is a support surface of the fork 37 fixed to the back side of the base 101. The supporting surface 104 is heavy in weight of the apparatus and prevents the end surface of the bottom plate 100 from being bent by the fork 37.

The place 105 where the base 101 of the bottom plate 100 described above is changed is formed by surrounding at least three sides of the caster 102 so as to be continuous with the apron portion 106 as shown in FIG. 5 (in FIG. 2, FIG. 2). Not shown but similar). Further, the upper surface of the base 101 on which the casters 102 abut is limited to that portion, and is particularly stiffened and reinforced by a contact plate or the like.

As described above, in FIG. 1, the grooved member 108, typically the grooved steel of light-weight steel, is provided with the square groove 103, that is, the concave portion into which the fork 37 of the forklift is fitted. See also Figure 2
In No. 13, since the apron portion 106 hanging from the four flat upper surfaces of the base 101 is provided with recesses for receiving the forks 37 by the notches 103a, when the forks 37 are inserted into these recesses as shown in FIG. On the other hand, the position of the image forming apparatus is determined, the image forming apparatus is displaced in the left and right direction of the forklift traveling direction, or the fork 37 is applied to the caster 102 because there is no concave portion when the fork 37 is inserted into the lower surface of the image forming apparatus. It will not be damaged. In addition, the stability of the image forming apparatus for the load is ensured during transportation.

[Second Embodiment] FIG. 4 shows another embodiment of the present invention.
Is shown. Although there are two square grooves in FIG. 1, one wide square groove 103 is provided in FIG. Also in this example, the square groove 103 is configured in the same manner as in the previous example by cutting out the groove shape member or the apron portion. Basically, since the space in which the forks can enter is guaranteed, the same effect as the above-described example can be obtained.

Each of the embodiments can be implemented in the same manner not only with casters but also with a device having stoppers that move up and down with screws.

In the embodiment, the notch 103a is provided in the apron portion 106 of the base 101, but since the side plates 35 and 36 and the base 101 maintain strength and rigidity as a frame,
The apron 106 of the base 101 is for reinforcement of the edge of the base 101, blinding of casters, etc., and for design purposes, and can be implemented in a mode as shown in FIG.

[0035]

According to the first aspect of the present invention, by providing a recess on the side of the bottom support opposite to the floor surface, inside the transportation wheel or stopper position, into which the transportation means of the image forming apparatus is inserted, A carrier such as a fork of a forklift could be used without increasing the height of the image forming apparatus itself.

The recess avoids the casters and the like of the bottom support, and the fork fits into the recess,
The image forming apparatus is positioned with respect to the fork, and the caster is not damaged when the fork is used.

Furthermore, since the concave portion can be visually observed from the outside, the insertion position of the fork can be easily known and the carrying operation can be facilitated.

According to the second aspect of the present invention, in the first aspect of the present invention, since the bottom support base is formed in a box shape and the notch is provided in the apron portion thereof, the bottom support is easily manufactured at low cost without significantly lowering the rigidity. An image forming apparatus having a base can be provided.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a color printer according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a modified example of the first embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of FIG.

FIG. 4 is a schematic vertical sectional view of a second embodiment of the present invention.

5 is a perspective view of the bottom of FIG. 1. FIG.

[Explanation of symbols]

 100 main body bottom plate 101 bottom plate base 102 caster 103 square groove 104 bottom plate inner fork support member 105 bottom plate caster attachment part a bottom plate to floor surface b fork storage part height

Claims (2)

[Claims] 1. An upper structure from a bottom plate support base, which comprises an upright frame body and a bottom support base fixed to the frame body at a lower portion of the frame body and having a transport wheel or a stopper, as structural members. In the integrated image forming apparatus, the bottom support base has a concave portion inside the transportation wheel or the stopper position, on the side opposite to the floor surface, into which the transportation means of the image forming apparatus is inserted. Image forming apparatus. 2. The bottom support base has a substantially box-like shape that is open to the floor surface, and is provided with a recess on the side surface into which a transporting means of the image forming apparatus is inserted. The image forming apparatus according to Item 1.