JP2018054835A - Image formation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate installation of an auxiliary member in comparison to a case of installing no contact part that is elastically deformable in the auxiliary member for reducing distortion of an image formation apparatus.SOLUTION: An image formation apparatus U includes an auxiliary member 21 being the auxiliary member 21 which is supported by a body U1 of the image formation apparatus and installed at a position displaced from a leg member 2, and includes: an auxiliary leg part 23 supported in the state of being separated from an installation surface 1 and capable of contacting the installation surface 1 when the body U1 of the image formation apparatus is inclined; and a contact part 24 protruding downward by a predetermined length with respect to the auxiliary leg part 23, supported in the state of contacting the installation surface 1 and elastically deformable when the body U1 of the image formation apparatus is inclined.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an image forming apparatus.

In an image forming apparatus such as a printer or a copying machine, when the image forming apparatus is installed on an installation surface such as a floor surface or a desk, as a configuration for preventing unevenness of the installation surface from distorting the image forming apparatus, The technique described in Patent Document 1 below is conventionally known.
Japanese Patent Application Laid-Open No. 2009-192579 as Patent Document 1 describes a configuration in which four or more feet (310) are supported by an image forming apparatus via a leaf spring (401) on a bottom plate (301) of the image forming apparatus. A configuration is described in which a nut (402) is supported and a shaft (310a) in which a foot (310) is threaded is fastened to the nut (402). In the configuration described in Patent Document 1, since the amount of deflection of the leaf spring (401) changes according to the load of the foot (310), the amount of distortion of the device body (GH) is detected, and the foot (310) is removed. It is adjusted.

JP 2009-192579 A (“0030” to “0038”, FIGS. 1 to 4)

  It is a technical object of the present invention to make it easier to install the auxiliary member in the auxiliary member that reduces distortion of the image forming apparatus as compared with a case where the elastically deformable contact portion is not provided.

In order to solve the technical problem, an image forming apparatus according to claim 1 is provided.
A leg member supported on the bottom of the main body of the image forming apparatus and in contact with the installation surface;
An auxiliary member supported by the main body of the image forming apparatus and disposed at a position displaced from the leg member, supported in a state of being separated from the installation surface, and the main body of the image forming apparatus is tilted An auxiliary leg that can be in contact with the installation surface, and is supported in a state of projecting below a predetermined length with respect to the auxiliary leg and in contact with the installation surface, and the main body of the image forming apparatus is inclined. The auxiliary member having an elastically deformable contact portion, and
It is provided with.

According to a second aspect of the present invention, in the image forming apparatus according to the first aspect,
A position supported by the main body of the image forming apparatus and supported so as to be movable toward and away from the installation surface, the auxiliary leg portion being separated from the installation surface, and the contact portion being in contact with the installation surface The auxiliary member having an adjustment part for adjusting the auxiliary member to
It is provided with.

According to a third aspect of the present invention, in the image forming apparatus according to the first or second aspect,
A window portion formed on the contact portion, the auxiliary leg portion being visible from the outside,
It is provided with.

According to a fourth aspect of the present invention, in the image forming apparatus according to the first or second aspect,
The contact portion made of a transparent material,
It is provided with.

According to a fifth aspect of the present invention, in the image forming apparatus according to the first or second aspect,
The contact portion that is supported by the auxiliary member at an interval and that is configured by a plurality of leg portions that protrude downward from the auxiliary leg portion,
It is provided with.

According to a sixth aspect of the present invention, in the image forming apparatus according to the first or second aspect,
The said contact part which has a projection part which protrudes below from the lower end of the said auxiliary member, and an elastic member which supports the said projection part so that a movement to an up-down direction is possible.
It is provided with.

According to the first aspect of the present invention, in the auxiliary member for reducing the distortion of the image forming apparatus, it is possible to facilitate the installation of the auxiliary member as compared with the case where the elastically deformable contact portion is not provided.
According to invention of Claim 2, the height of an auxiliary member can be adjusted with an adjustment part.
According to invention of Claim 3, an auxiliary member can be installed, visually recognizing an auxiliary leg part through a window part, and it can install easily in the state in which an auxiliary leg part does not contact an installation surface.

According to invention of Claim 4, an auxiliary member can be installed, visually recognizing an auxiliary leg part through a transparent contact part, and it can install easily in the state where an auxiliary leg part does not contact an installation surface. .
According to the invention described in claim 5, the auxiliary member can be installed while visually recognizing the auxiliary leg through the gap between the legs, and the auxiliary leg can be easily installed in a state where it does not contact the installation surface. Can do.
According to invention of Claim 6, an auxiliary member can be installed, visually recognizing a projection part and an auxiliary leg part, and it can install easily in the state where an auxiliary leg part does not contact an installation surface.

FIG. 1 is an explanatory diagram of a printer according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram of an image forming unit of the printer according to the first embodiment. FIG. 3 is an explanatory view of a position where the leg member and the auxiliary member of Example 1 are installed. 4A and 4B are explanatory views of the leg member and the auxiliary member according to the first embodiment, FIG. 4A is an explanatory view of the leg member, and FIG. 4B is an explanatory view of the auxiliary member. FIG. 5 is an explanatory view of a conventional auxiliary foot installation operation, FIG. 5A is an explanatory view of a state where a spacer is sandwiched, and FIG. 5B is an explanatory view of a state where the spacer is removed. FIG. 6 is an explanatory diagram of an auxiliary foot according to the second embodiment. 7A and 7B are explanatory views of an auxiliary foot according to the third embodiment, in which FIG. 7A is a side view, FIG. 7B is a view seen from obliquely above, and FIG. 7C is a view seen from obliquely below. FIG. 8 is an explanatory diagram of an auxiliary foot according to the fourth embodiment.

Next, examples which are specific examples of embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.
In order to facilitate understanding of the following description, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, the up-down direction is the Z-axis direction, and arrows X, -X, Y, -Y, The direction indicated by Z and -Z or the indicated side is defined as the front side, the rear side, the right side, the left side, the upper side, the lower side, or the front side, the rear side, the right side, the left side, the upper side, and the lower side, respectively.
In the figure, “•” in “○” means an arrow heading from the back of the page to the front, and “×” in “○” is the front of the page. It means an arrow pointing from the back to the back.
In the following description using the drawings, illustrations other than members necessary for the description are omitted as appropriate for easy understanding.

FIG. 1 is an explanatory diagram of a printer according to a first embodiment of the present invention.
In FIG. 1, a printer U according to a first embodiment of the image forming apparatus of the present invention has an apparatus body U1. A discharge tray TRh as an example of a paper discharge unit is provided on the upper surface of the apparatus body U1.
In FIG. 1, a printer U includes a control unit C, an image processing unit GS, a write drive circuit DL as an example of a drive circuit of a latent image forming device, a power supply circuit E as an example of a power supply device, and the like. ing. In the first embodiment, the control unit C and the like are realized by a microcomputer including a control board (not shown). The control unit C is electrically connected to a personal computer PC as an example of an information processing apparatus.

FIG. 2 is an explanatory diagram of an image forming unit of the printer according to the first embodiment.
1 and 2, below the discharge tray TRh of the printer U, image forming apparatuses UY, UM, UC, and UK, which are examples of an image forming unit and are examples of a visible image forming apparatus, are arranged. Yes.
In FIG. 1, a black, that is, K-color image forming device UK has a photoconductor Pk as an example of an image carrier. Around the photoreceptor Pk, a charging roller CRk as an example of a charger, a developing device Gk, a photoreceptor cleaner CLk as an example of a cleaning device for an image carrier, and the like are arranged. Below each of the developing devices Gy to Gk, a latent image forming device ROS is arranged.
The other color image forming apparatuses UY, UM, and UC are configured in the same manner as the black image forming apparatus UK.
At the front of the apparatus main body U1, toner cartridges Ty, Tm, Tc, and Tk as an example of a developer container are detachably supported. The toner cartridges Ty to Tk and the developing devices Gy to Gk Are connected by developer supply devices Hy, Hm, Hc, and Hk.

In FIG. 1, a belt module BM as an example of an intermediate transfer unit is disposed above the photoreceptors Py to Pk. The belt module BM includes an intermediate transfer belt B which is an example of an image holding member and an example of an intermediate transfer member.
The intermediate transfer belt B includes a belt drive roll Rd as an example of a drive member, a backup roll T2a as an example of a secondary transfer counter member, a plurality of driven rollers Rf as an example of a driven member, and an example of a primary transfer device. Are supported by an intermediate transfer support system including primary transfer rollers T1y, T1m, T1c, and T1k.
The primary transfer areas Q4y, Q4m, Q4c, and Q4k are configured by areas where the photoconductors Py to Pk and the primary transfer rollers T1y to T1k face each other.

A secondary transfer roll T2b as an example of a secondary transfer member is disposed facing the surface of the intermediate transfer belt B in contact with the backup roll T2a.
The backup roll T2a and the secondary transfer roll T2b constitute a secondary transfer device T2 of Example 1. A secondary transfer region Q5 is formed by the regions where the secondary transfer roll T2b and the intermediate transfer belt B face each other.
The primary transfer rollers T1y to T1k, the intermediate transfer belt B, the secondary transfer device T2, and the like constitute the transfer device T1 + T2 + B of the first embodiment.

A manual feed tray TR0 as an example of a medium stacking unit is disposed below the front side of the latent image forming apparatus ROS.
At the front end of the manual feed tray TR0, a tray main body TR0a as an example of a main body of the stacking unit is supported so as to be openable and closable. A rearwardly transporting portion TR0b is connected to the rear of the tray body TR0a. A plurality of transport rolls Ra as an example of a medium transport member are arranged in the transport unit TR0b.

A paper feed tray TR1 as an example of a medium stacking unit is disposed below the manual feed tray TR0. The paper feed tray TR1 is supported to be detachable in the front-rear direction with respect to the apparatus main body U1. The paper feed tray TR1 is configured to be able to stack recording sheets S as an example of a medium.
A paper feed roll Rp as an example of a delivery member is disposed behind the paper feed tray TR1. A transport roll Ra is disposed behind the paper feed roll Rp as an example of a transport member. Note that the paper feed roll Rp and the transport roll Ra of Example 1 also have a function as a roll for transporting the recording sheet S to the downstream side when the recording sheet S is transported from the manual feed tray TR0.

A registration roll Rr, which is an example of a sheet feeding timing adjusting member, is disposed behind the transport roll Ra. A sheet feed path SH1 as an example of a medium transport path is formed between the sheet feed roll Rp and the registration roll Rr.
A fixing device F is disposed above the secondary transfer device T2. The fixing device F includes a heating roll Fh as an example of a heat fixing member and a pressure roll Fp as an example of a pressure fixing member. The fixing region Q6 is configured by a region where the heating roll Fh and the pressure roll Fp are in contact with each other with a preset pressure.
In front of the fixing device F, a discharge roller Rh as an example of a discharge member is disposed.

  A reverse path SH2 as an example of a transport path extends behind the discharge roller Rh. The reverse path SH2 extends rearward from the discharge roller Rh, and then extends downward from the fixing device F, the secondary transfer device T2, and the registration roll Rr, and joins the registration roll Rr upstream in the sheet conveyance direction. A medium conveying member (not shown) is disposed on the reversing path SH2.

(Function of image forming apparatus)
In the printer U according to the first embodiment, when print information is transmitted from the personal computer PC to the printer U, the control unit C receives the print information. The control unit C controls operations of the image processing unit GS, the write drive circuit DL, and the power supply circuit E.
Print information received by the control unit C is input to the image processing unit GS. The image processing unit GS converts print information into image information for forming a latent image corresponding to yellow, magenta, cyan, black, that is, four-color images of Y, M, C, and K. The image processing unit GS outputs the converted image information to the writing drive circuit DL at a preset time.
When the document image is a single color image, so-called monochrome, only black image information is input to the writing drive circuit DL.

The write drive circuit DL has drive circuits for respective colors Y, M, C, and K (not shown), and outputs a signal corresponding to input image information to the latent image forming apparatus ROS at a preset time. .
When the image forming operation is started, the power supply circuit E performs charging rollers CRy to CRk, developing rollers of the developing devices Gy to Gk, primary transfer rollers T1y to T1k, secondary transfer roll T2b, etc. at a preset time. Apply voltage to

In the charging regions Q1y, Q1m, Q1c, and Q1k where the photosensitive members Py to Pk and the charging rollers CRy to CRk face each other, the charging rollers CRy to CRk charge the surfaces of the photosensitive members Py to Pk. In the latent image forming regions Q2y, Q2m, Q2c, and Q2k on the downstream side of the charging regions Q1y to Q1k with respect to the rotation direction of the photosensitive members Py to Pk, the latent image forming device ROS has latent images on the surfaces of the photosensitive members Py to Pk. Write. In the development areas Q3y, Q3m, Q3c, and Q3k where the photoconductors Py to Pk and the developing devices Gy to Gk face each other, the electrostatic latent images on the photoconductors Py to Pk are developed into a toner image as an example of a visible image. The Therefore, the image forming apparatuses UY to UK form toner images of respective colors of yellow, magenta, cyan, and black as an example of a visible image.
When the developer is consumed as the toner image is formed, the developer is supplied from the toner cartridges Ty to Tk to the developing devices Gy to Gk through the developer supply devices Hy, Hm, Hc, and Hk.

The primary transfer rollers T1y, T1m, T1c, and T1k transfer the toner images on the photoreceptors Py to Pk to the intermediate transfer belt B in the primary transfer areas Q4y, Q4m, Q4c, and Q4k.
Photoreceptor cleaners CLy, CLm, CLc, and CLk clean residues and adhering matters such as transfer residual toner and discharge products adhering to the surface of the photoreceptors Py, Pm, Pc, and Pk after the primary transfer. . The cleaned surfaces of the photoreceptors Py, Pm, Pc, and Pk are recharged in the charging regions Q1y to Q1k.
The single-color or multi-color toner images transferred onto the intermediate transfer belt B in the primary transfer areas Q4y, Q4m, Q4c, and Q4k are conveyed to the secondary transfer area Q5.

The transport roll Ra of the manual feed tray TR0 sends out the recording sheets S stacked on the tray main body TR0a when paper is fed from the manual feed tray TR0.
The paper feed roll Rp sends out the recording sheets S stacked on the paper feed tray TR1 when feeding paper from the paper feed tray TR1. The sent recording sheet S is sent to the registration roll Rr.
The registration roll Rr sends the recording sheet S toward the secondary transfer area Q5 in accordance with the timing when the toner image on the intermediate transfer belt B reaches the secondary transfer area Q5.

In the secondary transfer region Q5, the toner image on the surface of the intermediate transfer belt B is transferred to the recording sheet S with the secondary transfer voltage applied to the secondary transfer device T2.
The intermediate transfer belt B after the toner image is transferred in the secondary transfer region Q5 is cleaned by removing residual toner, discharge products, and the like by a belt cleaner (not shown).
The recording sheet S to which the toner image has been transferred is conveyed to the fixing region Q6 of the fixing device F. The fixing device F fixes the unfixed toner image passing through the fixing region Q6 to the recording sheet S with heat and pressure.

The recording sheet S on which the image is fixed is discharged from the discharge roller Rh to the discharge tray TRh.
When double-sided printing is performed, the discharge roller Rh rotates reversely when the trailing edge of the recording sheet S on which the image is recorded on the first side passes the branch position with the reversing path SH2. Therefore, the recording sheet S is sent to the reversing path SH2. Then, the recording sheet S conveyed on the reversing path SH2 is retransmitted to the registration roll Rr with the front and back sides of the recording sheet S being reversed.

(Description of leg member and auxiliary member)
FIG. 3 is an explanatory view of a position where the leg member and the auxiliary member of Example 1 are installed.
4A and 4B are explanatory views of the leg member and the auxiliary member according to the first embodiment, FIG. 4A is an explanatory view of the leg member, and FIG. 4B is an explanatory view of the auxiliary member.
1, 3, and 4, the printer U according to the first embodiment is installed on a top surface 1 of a desk as an example of an installation surface via a foot 2 as an example of a leg member. In the first embodiment, three feet 2 are arranged. Two of the three feet 2a and 2b are arranged at positions separated in the left-right direction at the rear portion of the printer U. In the first embodiment, in the printer U, two of the two feet 2a and 2b are disposed at the rear portion where the relatively heavy fixing device F is disposed. The remaining one foot 2c is disposed on a virtual line L2 that is orthogonal to the virtual line L1 that connects the rear feet 2a and 2b and passes through the center of gravity G0 of the printer U. Therefore, in Example 1, the positions of the feet 2a to 2c are set so that the center of gravity G0 exists inside the triangle surrounded by the three feet 2a to 2c.

  In FIG. 4A, the foot 2 of the first embodiment is supported by a nut 7 as an example of an adjustment unit supported by the bottom plate 6 of the printer U. The foot 2 has a shaft portion 11 extending in the vertical direction. A screw part 11 a is formed on the upper part of the shaft part 11. A grounding portion 12 is formed below the shaft portion 11. Therefore, in the foot 2 of the first embodiment, the screw portion 11 a is screwed to the nut 7 by rotating the foot 2 around the axial direction of the shaft portion 11. Therefore, when the foot 2 is rotated, the screw 2 moves in the tightening direction or the loosening direction, and the foot 2 moves in the vertical direction. Therefore, the foot 2 is rotated so that the grounding portion 12 can be adjusted to be in contact with the installation surface 1. The foot 2 may have a fixed height.

  3 and 4B, in the printer U according to the first embodiment, auxiliary feet 21 as an example of an auxiliary member are disposed on the front side of the printer U and on both ends in the left-right direction. In FIG. 4B, the auxiliary foot 21 is supported by the nut 7 of the bottom plate 6 of the printer U. The auxiliary foot 21 has a shaft portion 22 extending in the vertical direction. A screw portion 22 a as an example of an adjustment portion is formed on the upper portion of the shaft portion 22. An auxiliary foot main body 23 as an example of an auxiliary leg portion is formed at the lower portion of the shaft portion 22. An elastic leg 24 as an example of a contact portion is supported on the upper portion of the auxiliary foot main body 23. The elastic leg 24 of the first embodiment is made of rubber as an example of an elastic body.

The elastic leg 24 of the first embodiment is formed in an umbrella shape, and the lower end protrudes below a preset distance L3 with respect to the lower end of the auxiliary foot main body 23. In the first embodiment, the distance L3 is set based on the allowable amount of twisting of the frame and frame of the printer U. As an example, in Example 1, the distance L3 = 1 [mm] is set.
In the first embodiment, by rotating the auxiliary foot 21, the screw portion 22 a moves in a tightening direction or a loosening direction, the auxiliary foot main body 23 is separated from the installation surface 1, and the lower end of the elastic leg 24 contacts the installation surface 1. It is configured to be able to adjust to the state to be.

(Function of auxiliary foot)
In the printer U according to the first embodiment having the above-described configuration, the printer U is installed on the installation surface 1 with three feet 2a to 2c in a normal state where no external force is applied to the printer U. Since a plane is formed by three points in three dimensions, if there are four or more feet, there is a problem that the frame and frame of the printer U are distorted due to the unevenness when the installation surface 1 has unevenness. In particular, the configuration having the intermediate transfer belt B has a problem that the influence of distortion and twisting tends to increase.
On the other hand, in Example 1, the auxiliary foot 21 has the auxiliary foot main body 23 separated from the installation surface 1 (floating), and the elastic legs 24 can be elastically deformed. Therefore, if the elastic leg 24 is adjusted to be in contact with the installation surface 1 according to the unevenness of the installation surface, the distance L3 between the installation surface 1 and the auxiliary foot 21 is adjusted to 1 [mm], which is an allowable amount of frame twist. .

  When only three feet 2 are provided and the auxiliary foot 21 is not provided, if a load or an external force is applied to a position where the foot 2 is not provided, the frame of the printer U may be distorted. For example, when a user puts his / her weight on the right front and left front corners of the printer U where the auxiliary foot 21 is not provided, leans against it, or places a heavy load temporarily, In some cases, the frame of the printer U may be distorted. On the other hand, in the first embodiment, the auxiliary foot 21 is disposed. When the load is applied to the printer U and tilted, the elastic leg 24 is elastically deformed, and the auxiliary foot main body 23 contacts the installation surface 1. To do. Therefore, the occurrence of distortion of the frame of the printer U is reduced.

FIG. 5 is an explanatory view of a conventional auxiliary foot installation operation, FIG. 5A is an explanatory view of a state where a spacer is sandwiched, and FIG. 5B is an explanatory view of a state where the spacer is removed.
In FIG. 5, conventionally, when the auxiliary foot 01 is installed, first, the auxiliary foot 01 is mounted in a state where a spacer 03 having a thickness corresponding to the allowable amount of distortion is sandwiched between the auxiliary foot 01 and the installation surface 02. Adjust the height. Thereafter, by removing the spacer 03, as shown in FIG. 5B, when the auxiliary foot 01 is lifted from the installation surface and the printer is inclined, the auxiliary foot 01 is installed within the allowable distortion range. It is possible to install so that it may contact 02.

However, in the conventional configuration shown in FIG. 5, the spacer 03 needs to be inserted or removed when the printer U is installed or when the auxiliary foot 01 is readjusted. Therefore, the work of inserting and removing the spacer 03 and the storage and management of the spacer 03 are troublesome, and there are also problems that the number of parts increases and the cost increases.
Further, the technique described in Patent Document 1 has a configuration for detecting the distortion amount of the apparatus main body and displaying it on the user interface. However, when these configurations are incorporated, there is a problem that the cost increases.
On the other hand, in the configuration of the first embodiment, the auxiliary foot main body 23 can be installed in a state of floating from the installation surface 1 only by adjusting the elastic legs 24 so as to contact the installation surface 1. Therefore, compared with the conventional configuration, the work is easy, the configuration is simple, and the increase in cost is suppressed.

Next, a second embodiment of the present invention will be described. In the description of the second embodiment, components corresponding to the components of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. To do.
This embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.
FIG. 6 is an explanatory diagram of an auxiliary foot according to the second embodiment.
In FIG. 6, in the auxiliary foot 21 of the second embodiment, the elastic leg 24 is formed with a window portion 24 a penetrating the outer side and the inner side of the elastic leg 24.

(Operation of Example 2)
In the auxiliary foot 21 of the second embodiment having the above-described configuration, the operator can visually recognize the auxiliary foot main body 23 from the outside through the window portion 24a. Therefore, when the height of the auxiliary foot 21 is adjusted, it is possible to make an adjustment while confirming whether the auxiliary foot main body 23 is properly separated from the installation surface 1. Therefore, the adjustment work is further facilitated as compared with the case where the window portion 24a is not provided.
In the configuration of the first embodiment, a part or the whole of the elastic leg 24 can be made of a transparent or translucent elastic material. With this configuration, adjustment can be performed while confirming the position of the auxiliary foot main body 23 without providing the window 24a as in the second embodiment.

Next, a third embodiment of the present invention will be described. In the description of the third embodiment, the same reference numerals are given to the components corresponding to the components of the first embodiment, and the detailed description thereof will be omitted. To do.
This embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.
7A and 7B are explanatory views of an auxiliary foot according to the third embodiment, in which FIG. 7A is a side view, FIG. 7B is a view seen from obliquely above, and FIG. 7C is a view seen from obliquely below.
In FIG. 7, in the auxiliary foot 21 of the third embodiment, a leg portion 31 having a multi-leg structure is provided as an example of a contact portion instead of the umbrella-shaped elastic leg 24. The leg part 31 of the third embodiment is provided with four leg parts 31 at 90 ° intervals with respect to the circumferential direction of the shaft part 22. In addition, each leg part 31 is comprised so that elastic deformation is possible like Example 1. FIG.

(Operation of Example 3)
In the auxiliary foot 21 of Example 3 having the above-described configuration, a gap is opened between the leg portions 31, and the auxiliary foot main body 23 is visible through the gap. Therefore, also in the auxiliary foot 21 of the third embodiment, the adjustment work can be performed while visually recognizing the auxiliary foot main body 23 as in the second embodiment.

Next, a description will be given of a fourth embodiment of the present invention. In the description of the fourth embodiment, components corresponding to the components of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. To do.
This embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.

FIG. 8 is an explanatory diagram of an auxiliary foot according to the fourth embodiment.
In FIG. 8, in the auxiliary foot 21 of the fourth embodiment, instead of the umbrella-shaped elastic leg 24, a protrusion / depression 36 as an example of a contact portion is supported at the lower end of the auxiliary foot main body 23. The protrusion / projection 36 is accommodated in a recess 37 formed in the auxiliary foot main body 23. The recessed part 37 is comprised by the recessed part 37 extended in an up-down direction. The protrusion / projection 36 has a protrusion main body 38 that is movable along the recess 37 as an example of the protrusion. The length L3 between the lower end of the projection main body 38 and the lower end of the auxiliary foot main body 23 is set based on the allowable twisting amount. A coil spring 39 as an example of an elastic member is supported between the upper end of the projection body 38 and the recess 37.

(Operation of Example 4)
In the auxiliary foot 21 of Example 4 having the above-described configuration, the elastic leg 24 is not provided. Therefore, the lower end of the auxiliary foot main body 23 and the protrusion / depression projection 36 are visible from the outside. Therefore, it is possible to perform the adjustment work while visually recognizing the auxiliary foot main body 23 as in the second and third embodiments.
In the fourth embodiment, it is desirable that the protrusion main body 38 is held by the coil spring 39 in a state of reliably protruding from the auxiliary foot main body 23. However, since the protrusion main body 38 protrudes downward due to gravity, A configuration in which the coil spring 39 is not provided is also possible.

(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Modification examples (H01) to (H04) of the present invention are exemplified below.
(H01) In the above embodiment, the printer U as the image forming apparatus has been exemplified. However, the present invention is not limited to this, and a FAX, a copying machine, or a multifunction machine having all or a plurality of functions may be used. Further, the image forming apparatus is not limited to a color image forming apparatus, and may be configured by a monochrome image forming apparatus.

(H02) In the above embodiment, the number of feet 2 is preferably three-point support, but can also be four or more. Instead of the foot 2c supported at one point, a so-called quasi-three-point support structure in which it is supported at two adjacent points can be adopted. In addition, it is desirable to arrange the front foot 2c on the line segment L2 passing through the center of gravity G0, but it is also possible to set it at a position shifted from the line segment L2. In addition, it is desirable to arrange two feet 2a and 2b on the rear side and one foot 2c on the front side. However, the reverse relationship may be used, or two on the right side and one on the left side. Is possible.

(H03) In the above-described embodiment, the configuration using the nut 7 and the screws 11a and 22a is exemplified as the configuration for adjusting the height. However, the configuration is not limited to this. For example, it can be changed according to the design, specifications, etc., such as adjustment with a configuration having a slider and a stopper.
(H04) In the embodiment, it is desirable to use an elastically deformable material as an example of the contact portion, but the invention is not limited to this. It is also possible to use a configuration or material that is plastically deformed and does not recover when the printer U is inclined with a resin film or the like. Also, any elastic material such as foamed rubber or foamed urethane can be used as the elastic body.

1 ... installation surface,
2 ... Leg members,
21 ... an auxiliary member,
22a ... adjustment unit,
23 ... auxiliary leg,
24, 31, 36 ... contact portion,
24a ... window,
31 ... Legs,
38 ... protrusions,
39 ... an elastic member,
U: Image forming apparatus,
U1... Main body of the image forming apparatus.

Claims (6)

A leg member supported on the bottom of the main body of the image forming apparatus and in contact with the installation surface;
An auxiliary member supported by the main body of the image forming apparatus and disposed at a position displaced from the leg member, supported in a state of being separated from the installation surface, and the main body of the image forming apparatus is tilted An auxiliary leg that can be in contact with the installation surface, and is supported in a state of projecting below a predetermined length with respect to the auxiliary leg and in contact with the installation surface, and the main body of the image forming apparatus is inclined. The auxiliary member having an elastically deformable contact portion, and
An image forming apparatus comprising: A position supported by the main body of the image forming apparatus and supported so as to be movable toward and away from the installation surface, the auxiliary leg portion being separated from the installation surface, and the contact portion being in contact with the installation surface The auxiliary member having an adjustment part for adjusting the auxiliary member to
The image forming apparatus according to claim 1, further comprising: A window portion formed on the contact portion, the auxiliary leg portion being visible from the outside,
The image forming apparatus according to claim 1, further comprising: The contact portion made of a transparent material,
The image forming apparatus according to claim 1, further comprising: The contact portion that is supported by the auxiliary member at an interval and that is configured by a plurality of leg portions that protrude downward from the auxiliary leg portion,
The image forming apparatus according to claim 1, further comprising: The said contact part which has a projection part which protrudes below from the lower end of the said auxiliary member, and an elastic member which supports the said projection part so that a movement to an up-down direction is possible.
The image forming apparatus according to claim 1, further comprising:

Images