JP6597176B2 - Image forming apparatus system - Google Patents

Description

  The present invention relates to an image forming apparatus system and the like.

For example, the image forming apparatus described in Patent Document 1 has a plurality of through holes into which a plurality of pins provided on a paper feed table are inserted.
In the invention described in Patent Document 1, when the horizontal force acts on the image forming apparatus and the image forming apparatus is tilted, the outer edge portion of the through hole is locked (hooked) on the tip side of the pin. The image forming apparatus is prevented from falling off the paper feed table. Hereinafter, the inclination angle of the image forming apparatus when the through hole is locked to the pin is referred to as “locking angle”.

JP 2001-59199 A

  In the invention described in Patent Document 1, the image forming apparatus can be tilted until the through hole is locked to the pin, that is, until the inclination angle of the image forming apparatus becomes the locking angle. For this reason, when the locking angle is large, the image forming apparatus can be largely inclined, and thus there is a possibility that the image forming apparatus cannot be placed in a stable state.

  An object of this invention is to provide the structure which can make a latching angle small in view of the said point.

  The locking angle is an inclination angle (θ) of the image forming apparatus (2) when the outer edge of the through hole (7A) contacts the pin (5). The clearance dimension (Δr) between the outer edge of the through hole (7A) and the pin (5) is set, and the distance from the rotation center when the image forming apparatus (2) is tilted to the outer edge of the through hole (7A) is defined as the rotation radius (Ro). In this case, Equation 1 described later is established between the gap size (Δr) and the rotation radius (Ro).

  When the clearance dimension when the inclination angle (θ) is 0 degree is Δro, the inclination angle (θ) where Δr = Δro is the locking angle. As is clear from the above equation, the outer edge of the through hole (7A) comes into contact with the pin (5) at a smaller inclination angle (θ) as the turning radius (Ro) increases.

  In the present application, the image forming apparatus (2) is supported by the support base (3) having the placement surface (4) and the placement surface (4) to support the image forming apparatus (2). A plurality of legs (2D), a pin (5) projecting upward in the vertical direction from the support base (3), and a drop-off prevention member (71) provided in the image forming apparatus (2), 5) is provided with a drop-off preventing member (71) provided with a through hole (7A) through which is inserted, and a virtual closed curve connecting a plurality of legs (2D) is defined as a bottom outline (Lo). The through hole (7A) and the pin (5) are located outside the bottom side outline (Lo), and the through hole (7A) is vertically above the bottom surface (2C) of the image forming apparatus (2). Located in.

Thereby, in this invention, it becomes possible to obtain a rotation radius (Ro) larger than the rotation radius which concerns on patent document 1. FIG.
That is, suppose that the gap dimension (Δro) before the image forming apparatus (2) inclines is the same in the present invention and the invention according to Patent Document 1, and the center of rotation when the image forming apparatus (2) is inclined. If the dimensions from to pin (5) are the same, then:

  In the present invention, since the through hole (7A) is positioned above the bottom surface (2C) of the image forming apparatus (2) in the vertical direction, the turning radius (Ro) according to the present invention is from the center of rotation to the pin (5). This corresponds to the hypotenuse length of a right triangle whose base is.

  The turning radius (Ro) according to the invention described in Patent Document 1 corresponds to the base length of the right triangle. And since the hypotenuse length of a right triangle is larger than the base length of a right triangle, in this invention, it becomes possible to obtain a rotation radius (Ro) larger than the rotation radius which concerns on patent document 1. FIG.

  Furthermore, in the present invention, the through hole (7A) and the pin (5) are located outside the bottom side outline (Lo), whereas in the invention described in Patent Document 1, the through hole ( 7A) and the pin (5) are located inside the bottom side outline (Lo) (see FIG. 5 of Patent Document 1). Therefore, in the present invention, it is possible to obtain a rotation radius (Ro) larger than the rotation radius according to Patent Document 1.

  As described above, according to the present invention, a rotation radius (Ro) larger than the rotation radius according to Patent Document 1 can be obtained, so that the locking angle can be reduced and the image forming apparatus (2) can be reduced. It can be placed in a stable state.

  In the invention according to Patent Document 1, since the turning radius (Ro) corresponds to the base length of a right triangle, in order to increase the turning radius (Ro), the base length, that is, the paper feed table (the present invention). It is necessary to enlarge the support base (3). Therefore, in the invention according to Patent Document 1, it is difficult to reduce the locking angle while suppressing the enlargement of the entire image forming apparatus system.

  Incidentally, the reference numerals in parentheses for each of the above-mentioned means are examples showing the correspondence with the specific configurations described in the embodiments described later, and the present invention includes the specific configurations indicated by the reference numerals in the parentheses. It is not limited to.

1 is a perspective view of an image forming apparatus system 1 according to an embodiment of the present invention. 1 is a perspective view of an image forming apparatus system 1 according to an embodiment of the present invention, in which an image forming apparatus 2 is removed. FIG. 3 is a view of the image forming apparatus system 1 according to the embodiment of the present invention in which the dropout prevention members 7 and 8 are removed from the image forming apparatus 2. It is a figure which shows 2 C of bottom surfaces of the image forming apparatus 2 which concerns on embodiment of this invention. A is a view showing the first pin 5 and the second pin 6. B is a schematic diagram showing a state in which the image forming apparatus 2 is tilted. A is a figure which shows the 1st drop-off prevention member 7 and the cover 9. FIG. B is a view showing the second drop-off prevention member 8 and the cover 9. A is a figure which shows a mounting state. B is a figure which shows a non-wearing state.

  The “embodiment of the invention” described below shows an example of the embodiment. In other words, the invention specific items described in the claims are not limited to the specific configurations and structures shown in the following embodiments.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the arrow etc. which show the direction attached | subjected to each figure are described in order to make it easy to understand the relationship between each figure. The present invention is not limited to the directions given in the drawings.

At least one member or part described with at least a reference numeral is provided, except where “plurality”, “two or more”, and the like are omitted.
(First embodiment)
1. 1. Image Forming System 1.1 Outline of Image Forming System In this embodiment, as shown in FIG. 1, the present invention is applied to an image forming system 1 using a tower tray 3 as a support base. The tower tray 3 is an example of a support base in which a plurality of paper feed trays 3A to 3D are stacked in a vertical direction to form a tower shape.

  Each of the paper feed trays 3 </ b> A to 3 </ b> D can mount a plurality of printing papers (hereinafter referred to as sheets) supplied to the image forming apparatus 2. As shown in FIG. 2, a placement surface 4 on which the image forming apparatus 2 is placed is provided at the top of the tower tray 3.

  As shown in FIG. 3, the image forming apparatus 2 includes an image forming unit 2A, a housing 2B, and the like. The image forming unit 2A forms an image on the sheet. The image forming unit 2A according to the present embodiment is an electrophotographic system.

  The housing 2B houses the image forming unit 2A. The housing 2B surrounds the periphery of the image forming unit 2A and constitutes the external appearance of the image forming apparatus 2. Hereinafter, the housing 2B is also referred to as an apparatus main body 2B. That is, the apparatus main body 2B includes at least the image forming unit 2A.

  As shown in FIG. 4, a plurality of (four in this embodiment) leg portions 2D are provided on the bottom surface 2C of the apparatus main body 2B. The plurality of leg portions 2D are in contact with the placement surface 4 and support the apparatus main body 2B. In addition, each site | part 4A (refer FIG. 3) among the mounting surfaces 4 is a site | part which each leg part 2D contacts.

1.2 First Pin and Second Pin As shown in FIG. 3, the tower tray 3 is provided with at least one (two in this embodiment) first pin 5. The pair of first pins 5 are substantially cylindrical protrusions that protrude upward from the placement surface 4 in the vertical direction.

  At least one (two in this embodiment) second pin 6 is provided at a position shifted in the horizontal direction with respect to each first pin 5. For example, the second pin 6 on the right side of the drawing is provided at a position shifted in the front-rear direction with respect to the first pin 5 on the right side of the drawing.

  The second pin 6 on the left side of the drawing is provided at a position shifted in the front-rear direction with respect to the first pin 5 on the left side of the drawing. The “front-rear direction” refers to a direction parallel to the direction in which the sheet on which the image is formed is discharged.

  The pair of second pins 6 are substantially cylindrical protrusions that protrude upward from the placement surface 4 in the vertical direction. In the present embodiment, since the pair of first pins 5 and the pair of second pins 6 are congruent, the shapes of the first pins 5 and the second pins 6 will be described taking the first pin 5 as an example.

  As shown in FIG. 5A, an umbrella portion 5 </ b> A protruding in the outer diameter direction is provided on the distal end side of the first pin 5, that is, on the upper end side of the first pin 5. The umbrella portion 5A is a flange-like portion protruding in the outer diameter direction over the entire circumferential direction.

  In the present embodiment, the root side outer diameter dimension of the first pin 5, that is, the outer diameter dimension D1 on the lower end side of the first pin 5, is the same dimension as the outer diameter dimension D2 of the umbrella portion 5A. In other words, the 1st pin 5 which concerns on this embodiment is provided with the small diameter part 5B with a small outer diameter dimension compared with another site | part in some solid round bars of the outer diameter dimension D1. .

1.3 Drop-off prevention member As shown in FIG. 5A, at least one (two in the present embodiment) drop-off prevention members 7 and 8 are provided in the image forming apparatus 2, that is, the apparatus main body 2B. The dropout prevention member 7 on the left side of the paper surface and the dropout prevention member 8 on the right side of the paper surface have the same function, and their shapes are substantially the same (see FIGS. 6A and 6B). Hereinafter, the structure and the like of the dropout prevention members 7 and 8 will be described taking the dropout prevention member 7 as an example.

  As shown in FIG. 6A, the dropout prevention member 7 is provided with a first through hole 7A through which the first pin 5 is inserted and a second through hole 7B through which the second pin 6 is inserted. That is, in the dropout prevention member 7 according to the present embodiment, the first dropout prevention member 71 provided with the first through hole 7A and the second dropout prevention member 72 provided with the second through hole 7B are integrated. Is.

  That is, the second dropout prevention member 72 is displaced in the front-rear direction with respect to the first dropout prevention member 71. And the 1st fall-off prevention member 71 and the 2nd fall-off prevention member 72 are comprised by one metal member, and are integrated.

  Specifically, the first drop prevention member 71 and the second drop prevention member 72, that is, the drop prevention member 7 have at least a first plate portion 7C and a second plate portion 7D. The first plate portion 7C is a band plate-like portion extending in the front-rear direction along the side surface of the housing 2B.

  The second plate portion 7D extends from the first plate portion 7C in a direction intersecting the first plate portion 7C, and extends in the same direction as the first plate portion 7C (in the present embodiment, the front-rear direction). It is a shaped part. The first through hole 7A and the second through hole 7B are provided in the second plate portion 7D.

  A third plate portion 7E is provided below the second plate portion 7D in the vertical direction. The third plate portion 7E is a strip-shaped part extending in the front-rear direction along the bottom surface 2C of the apparatus main body 2B (image forming apparatus 2).

  In addition, the drop-off prevention member 7 according to the present embodiment is configured and formed as a single metal plate that has been subjected to press working (bending). That is, the first plate portion 7C, the second plate portion 7D, and the third plate portion 7E are integrally formed of a metal plate.

  The drop-off prevention member 7 can be detachably fixedly attached to a fixing portion 2E (see FIG. 4) provided on the bottom surface 2C. Specifically, as shown in FIG. 6A, the third plate portion 7E is provided with fixed portions 7F and 7G that are fixed to the fixing portion 2E.

  The fixed portion 7F is a pin-shaped portion that can be inserted into a positioning hole (not shown) provided in the fixing portion 2E. In the present embodiment, a plurality of fixed portions 7F are provided. The fixed portion 7G is a screw hole for fixing the dropout prevention member 7 with screws. In the present embodiment, a plurality of fixed portions 7G are provided.

  That is, the user allows the screw to pass through the fixed portion 7G which is a screw hole in a state where the pin-shaped fixed portion 7F is inserted into a positioning hole (not shown) provided in the fixing portion 2E. The screw is tightened into the bottom surface 2C (fixing portion 2E).

  Thereby, the user can fix the drop-off prevention member 7 to the apparatus main body 2B. Further, the user can remove the drop-off prevention member 7 from the apparatus main body 2B by removing the screw.

  The drop-off prevention members 7 and 8, and the first pin 5 and the second pin 6 are covered with a cover 9, as shown in FIG. As shown in FIGS. 6A and 6B, the cover 9 is assembled to the drop-off prevention members 7 and 8. The cover 9 according to the present embodiment is made of resin, and is assembled to the drop-off preventing members 7 and 8 by mechanical fasteners such as screws.

  In the state where the drop-off prevention members 7 and 8 are fixed to the apparatus main body 2B and the pins 5 and 6 are inserted through the through holes 7A and 7B, as shown in FIG. 7A and 7B and each pin 5 and 6 are located outside the bottom side outline Lo (see FIG. 4), and each through hole 7A and 7B is located above the bottom surface 2C in the vertical direction.

  As shown in FIG. 4, the bottom side outline Lo is a virtual closed curve that connects a plurality of legs 2D. The virtual closed curve connecting the plurality of leg portions 2D refers to a closed curve in which the plurality of leg portions 2D are in contact with the outer peripheral side of the closed curve. The closed curve is a free-form curve such as a polygonal closed curve having each leg 2D as a vertex or a Pezier curve smoothly connecting each leg 2D.

  In the present embodiment, the bottom-side outline Lo is substantially similar to the shape connecting the inner wall surfaces of the housing 2B projected on the virtual horizontal plane. Furthermore, each through-hole 7A, 7B is provided in the position shifted | deviated to the horizontal direction from 2nd board part 7D. For this reason, each through-hole 7A, 7B and each pin 5, 6 which concern on this embodiment are located outside the side surface of the housing | casing 2B.

1.4 Non-mounting detection unit (see FIGS. 7A and 7B)
The non-attachment detection unit 10 is a detection unit for detecting whether or not the drop-off prevention members 7 and 9 are attached to the image forming apparatus 2 (apparatus body 2B). The non-mounting detection unit 10 is provided on the tower tray 3, that is, the support base.

  The non-mounting detection unit 10 includes an actuator 10A, a switch unit 10B, and the like. The actuator 10 </ b> A is embedded in the tower tray 3 so as to be able to appear and retract with respect to the placement surface 4. The actuator 10A is disposed at a position in the tower tray 3 (mounting surface 4) that can come into contact with the drop-off prevention members 7 and 8, and is moved upward in the vertical direction by an elastic member (not shown) such as a spring. It is pressed toward.

  For this reason, when the image forming apparatus 2 is mounted on the mounting surface 4 in a state where the image forming apparatus 2 is mounted with the drop prevention members 7 and 8, the actuator 10 </ b> A presses against the drop prevention members 7 and 8. As a result, at least a portion is stored in the tower tray 3 (see FIG. 7A).

  When the image forming apparatus 2 is placed on the placement surface 4 with the drop-off prevention members 7 and 8 attached, there is no member in contact with the tip (upper end) of the actuator 10A. For this reason, the tip of the actuator 10A greatly protrudes from the placement surface 4 (see FIG. 7B).

  The switch unit 10B outputs a signal corresponding to the position of the actuator 10A. Specifically, when the actuator 10A is stored in the tower tray 3 (see FIG. 7A), the switch unit 10B outputs a Lo (low) level signal. When the actuator 10A protrudes from the placement surface 4 (see FIG. 7B), the switch unit 10B outputs a Hi (high) level signal.

That is, the switch unit 10B outputs a Lo level signal (hereinafter also referred to as a mounting signal) when the drop prevention members 7 and 9 are mounted on the image forming apparatus 2. The switch unit 10B outputs a Hi level signal (hereinafter also referred to as a non-mounting signal) when the drop prevention members 7 and 9 are not mounted on the image forming apparatus 2. The output signal of the switch unit 10B is an image forming signal. The data is input to the control unit 200 provided in the device 2. The control unit 200 controls the image forming unit 2A and the like. When the non-mounting signal is output from the switch unit 10B, the control unit 200 puts the image forming unit 2A into an inoperable state. The control unit 200 makes the image forming unit 2A operable when a mounting signal is output from the switch unit 10B.

2. Features of Image Forming Apparatus System According to Present Embodiment As shown in FIG. 5B, for example, the inclination angle of the image forming apparatus 2 when the first through hole 7A is locked (hooked) to the first pin 5 The stop angle θo ”. FIG. 5B is a simplified diagram of FIG. 5A. For this reason, the first pin 5 and the umbrella portion 5A of the first pin 5 are omitted.

  The locking angle θo is an inclination angle θ of the image forming apparatus 2 (apparatus main body 2B) when the outer edge of the first through hole 7A contacts the first pin 5. The clearance dimension Δr between the outer edge of the first through hole 7A and the first pin 5 is set, and the distance is rotated from the rotation center when the image forming apparatus 2 is tilted (hereinafter also referred to as the tilt center) to the outer edge of the first through hole 7A. When the radius Ro, the distance in the left-right direction from the center of rotation to the outer edge of the through hole 7A, that is, the length when the rotation radius Ro is projected onto the virtual horizontal plane is L, there is a gap between the clearance dimension Δr and the rotation radius Ro. The following formula 1 is established.

Δr = L−Ro · cos (θ1 + θ)
= Ro · {cos θ1−cos (θ1 + θ)} (Equation 1)
L = Ro · cos θ1
θ: Inclination angle θ1: An angle formed by the imaginary line connecting the outer edge of the first through hole 7A and the mounting surface 4 before the image forming apparatus 2 is inclined (see FIG. 5A)
When the clearance dimension when the inclination angle θ is 0 degree is Δro, the inclination angle θ where Δr = Δro is the locking angle θo. As is clear from Equation 1, the outer edge of the first through hole 7A comes into contact with the first pin 5 with a smaller inclination angle θ as the rotation radius Ro increases.

  In the present embodiment, the first through hole 7A and the first pin 5 are located outside the bottom side outline Lo, and the first through hole 7A is the bottom surface of the image forming apparatus 2 (the apparatus main body 2B). Located vertically above 2C.

Thereby, in this embodiment, it becomes possible to obtain a rotation radius Ro larger than the rotation radius according to Patent Document 1.
That is, in the present embodiment and the invention according to Patent Document 1, the gap dimension Δro before the image forming apparatus 2 tilts is the same, and the rotation center (tilt center) when the image forming apparatus 2 tilts is the same. If the dimensions up to the first pin 5 are the same, then:

  In the present embodiment, since the first through hole 7A is positioned vertically above the bottom surface 2C of the image forming apparatus 2, the rotation radius Ro according to the present embodiment has the bottom from the rotation center to the first pin 5. Corresponds to the hypotenuse length of a right triangle.

  The rotation radius Ro according to the invention described in Patent Document 1 corresponds to the base length of the right triangle. And since the hypotenuse length of a right triangle is larger than the base length of a right triangle, in this embodiment, it becomes possible to obtain a rotation radius Ro larger than the rotation radius according to Patent Document 1.

Incidentally, in the invention according to Patent Document 1, θ1 = 0 and L = Ro. For this reason, in the invention according to Patent Document 1, Δr = Ro · (1−cos θ).
The above description can be summarized as follows.

  θo is a function such as Ro and Δro, that is, θo = F (Ro.Δro). Since ∂θo / ∂Ro = ∂F (Ro, Δro) / ∂Ro <0, θo decreases as Ro increases.

  Therefore, if the first through hole 7A is displaced upward in the vertical direction, it corresponds to the hypotenuse of a right triangle. Therefore, Ro is larger than when the first through hole 7A is not displaced upward in the vertical direction. As a result, the locking angle θo can be reduced.

  In the present embodiment, the first through hole 7A and the first pin 5 are located outside the bottom side outline Lo, whereas in the invention described in Patent Document 1, the first through hole 7A and The 1st pin 5 is located inside the bottom side outline Lo (refer FIG. 5 etc. of patent document 1). Therefore, in the present embodiment, it is possible to obtain a rotation radius Ro larger than the rotation radius according to Patent Document 1.

  Further, since the dropout prevention member 7 is provided outside the bottom side outline Lo, when the right side of the image forming apparatus 2 is lifted as shown in FIG. 5B, the left dropout prevention member 7 is It will be in a state to fall to.

  On the other hand, when the first through hole 7A and the first pin 5 are located inside the bottom side outline Lo, both the left and right drop-off prevention members are lifted. Therefore, according to the present embodiment, since the drop prevention member 7 moves at least from the left first pin 5, the drop of the image forming apparatus 2 can be suppressed compared to the conventional case.

  As described above, in the present embodiment, since it is possible to obtain a rotation radius Ro larger than the rotation radius according to Patent Document 1, it is possible to reduce the locking angle θo, and to keep the image forming apparatus 2 in a stable state. Can be placed. The above action is the same in the relationship between the first through hole 7A and the first pin 5.

  Incidentally, in the invention according to Patent Document 1, since the rotation radius Ro corresponds to the base length of a right triangle, in order to increase the rotation radius Ro, the base length, that is, the paper feed table (the support table of the present embodiment). 3)). Therefore, in the invention according to Patent Document 1, it is difficult to reduce the locking angle θo while suppressing an increase in the size of the entire image forming apparatus system.

  In the present embodiment, since the second pin 6 is provided at a position displaced in the horizontal direction with respect to the first pin 5, image formation is performed even when force is applied to the image forming apparatus 2 from a plurality of directions. It is possible to suppress the device 2 from falling off the tower tray 3.

  In the present embodiment, the first drop-off prevention member 71 and the second drop-off prevention member 72 are configured by one metal member. Thereby, while being able to suppress the increase in a number of parts, high intensity | strength can be acquired compared with the case where the 1st fall-off prevention member 71 and the 2nd fall-off prevention member 72 are comprised with resin.

  In the present embodiment, the dropout prevention members 7 and 8 are configured to have the first plate portion 7C to the third plate portion 7E, so that the sectional moment (bending rigidity) of the dropout prevention members 7 and 8 is increased. It is possible to increase the strength of the drop-off prevention members 7 and 8.

  An umbrella portion 5A protruding in the outer diameter direction is provided on the distal end side of the first pin 5 and the second pin 6 according to the present embodiment. Thereby, when the image forming apparatus 2 is tilted and the first through hole 7A or the second through hole 7B is locked to the first pin 5 or the second pin 6, the locked state can be reliably maintained.

  That is, if the umbrella portion 5A is not provided (see FIG. 5B), the force that holds the locked state is that the outer edge portion of the first through hole 7A or the second through hole 7B is the first pin 5 or The main force is the frictional force caused by contact with the 2-pin 6.

  On the other hand, in the present embodiment, the locked state is maintained by engaging (hooking) the umbrella portion 5A and the periphery of the outer edge portion of the first through hole 7A or the second through hole 7B. Therefore, the locked state can be reliably maintained.

  In the present embodiment, the root side outer diameter dimension D1 of the first pin 5 and the second pin 6 is the same as that of the umbrella portion 5A, and the first pin is provided in each of the first through hole 7A and the second through hole 7B. In a state in which the 5 and the second pins 6 are inserted, the first through hole 7A and the second through hole 7B are located on the root side (vertical direction lower side) from the small diameter portion 5B (see FIG. 5A).

  As a result, in the state where the image forming apparatus 2 is not inclined, the clearance between the first through hole 7A and the second through hole 7B and the first pin 5 and the second pin 6 is set to the first through hole 7A and the second through hole 7B, respectively. 2 The through hole 7B is smaller than the gap size when the small diameter portion 5B is located.

Therefore, it is possible to prevent the image forming apparatus 2 from greatly rattling against the placement surface 4 in a state where the image forming apparatus 2 is not inclined.
In the image forming apparatus 2 according to the present embodiment, when the non-mounting signal is output from the switch unit 10B, the image forming unit 2A is disabled. That is, when the image forming apparatus 2 is mounted on the mounting surface 4 without the drop-off preventing member 7 being attached to the image forming apparatus 2, the image forming unit 2A becomes inoperable. Therefore, it is possible to make the user aware that “the image forming apparatus 2 is not installed in an appropriate state on the tower tray 3”.

(Other embodiments)
In the above-described embodiment, the present invention has been described by taking the tower tray 3 as an example of the support base. However, the support base according to the present invention is not limited to the tower tray 3.

In the above-described embodiment, the plurality of pins 5 and 6 are provided. However, the present invention is not limited to this, and at least one pin is sufficient.
In the above-described embodiment, the umbrella portion 5A is provided at the tip of the first pin 5 and the second pin 6, but the present invention is not limited to this, for example, a simple columnar or cylindrical shape. You may comprise the 1st pin 5 and the 2nd pin 6 with a member.

  In the embodiment described above, the drop-off prevention members 7 and 8 are detachable from the image forming apparatus 2 (apparatus main body 2B). However, the present invention is not limited to this, and the drop-off prevention members 7 and 8 are not limited thereto. May be integrated with the image forming apparatus 2 (apparatus main body 2B).

  In the above-described embodiment, the through holes 7A and 7B and the pins 5 and 6 are located outside the side surface of the housing 2B. However, the present invention is not limited to this, and the through holes 7A and 7B and the pins are provided. 5 and 6 may be inside the side surface of the housing 2B. That is, it is sufficient that the through holes 7A and 7B and the pins 5 and 6 are located outside the bottom side outline Lo.

  Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 ... Image forming system 2 ... Image forming apparatus 2A ... Image forming part 2B ... Case (apparatus main body) 2C ... Bottom face 2D ... Leg part 2E ... Fixed part 4 ... Mounting surface 5 ... 1st pin 5A ... Umbrella part 5B ... Small diameter part 6 ... 2nd pin 7 ... Fall-off prevention member 7A ... 1st through hole 7B ... 2nd through hole 7C ... 1st board part 7D ... 2nd board part 7E ... 3rd board part 7F, 7G ... Fixed part 8 ... Fall-off prevention member 9 ... Cover 10 ... Non-mounting detection part 10A ... Actuator 10B ... Switch part

Claims (18)

An image forming unit that forms an image on a sheet, and an image forming apparatus that includes a housing that houses the image forming unit;
A support base having a mounting surface on which the image forming apparatus is mounted;
A plurality of legs that contact the mounting surface and support the image forming apparatus;
A pin protruding upward in the vertical direction from the support base;
A fall prevention member provided in the image forming apparatus, the fall prevention member provided with a through hole into which the pin is inserted;
When a virtual closed curve connecting the plurality of legs is a bottom side outline,
The through hole and the pin are located outside the bottom outline, and the through hole is located vertically above the bottom surface of the image forming apparatus ,
The image forming apparatus system, wherein the through hole and the pin are located outside a side surface of the housing .   The image forming apparatus system according to claim 1, wherein the plurality of leg portions are provided on the bottom surface. A second pin protruding upward in the vertical direction from the support base, the second pin provided at a position shifted in the horizontal direction with respect to the pin;
A second dropout prevention member provided in the image forming apparatus, the second dropout prevention member provided with a second through hole into which the second pin is inserted,
The second through hole and the second pin are located outside the bottom side outline, and the second through hole is located vertically above the bottom surface. The image forming apparatus system according to claim 1 . The image forming apparatus system according to claim 3 , wherein the drop-off prevention member and the second drop-off prevention member are configured by a single metal member. When the direction parallel to the direction in which the sheet on which the image is formed is discharged is the front-rear direction,
The second stopper member, the image forming system according to claim 3 or 4, characterized in that displaced in the longitudinal direction relative to the stopper member. Wherein the distal end side of the pin, the image forming system according to any one of claims 1 to 5, characterized in that the umbrella portion projecting radially outward is provided. The image forming apparatus system according to claim 6 , wherein a root side outer diameter dimension of the pin is the same dimension as the umbrella part. The drop-off prevention member includes a first plate portion extending along a side surface of the housing, and a second plate portion extending from the first plate portion in a direction intersecting the first plate portion. And
The through hole, an image forming apparatus system according to any one of claims 1 to 7, characterized in that provided in the second plate portion. The drop-off prevention member has a third plate portion provided vertically below the second plate portion,
The image forming apparatus system according to claim 8 , wherein the third plate portion extends along the bottom surface and is fixed to the bottom surface. The drop-off prevention member is detachable from the image forming apparatus,
The image forming apparatus system according to any one of claims 1 to 9, characterized in that it comprises a detector for detecting whether said stopper member is attached to the image forming apparatus. The image forming apparatus system according to claim 10 , wherein the detection unit is provided on the support base. The image forming apparatus system according to any one of claims 1 to 11, characterized in that it comprises the stopper member and a cover that covers the pin. An image forming unit that forms an image on a sheet, and an image forming apparatus that includes a housing that houses the image forming unit;
A support base having a mounting surface on which the image forming apparatus is mounted;
A plurality of legs that contact the mounting surface and support the image forming apparatus;
A pin protruding upward in the vertical direction from the support base;
A fall prevention member provided in the image forming apparatus, the fall prevention member provided with a through hole into which the pin is inserted;
When a virtual closed curve connecting the plurality of legs is a bottom side outline,
The through hole and the pin are located outside the bottom outline, and the through hole is located vertically above the bottom surface of the image forming apparatus,
A second pin protruding upward in the vertical direction from the support base, the second pin provided at a position shifted in the horizontal direction with respect to the pin;
A second dropout prevention member provided in the image forming apparatus, the second dropout prevention member provided with a second through hole into which the second pin is inserted,
The second through hole and the second pin are located outside the bottom side outline, and the second through hole is located vertically above the bottom surface,
The image forming apparatus system, wherein the drop-off prevention member and the second drop-off prevention member are configured by one metal member. An image forming unit that forms an image on a sheet, and an image forming apparatus that includes a housing that houses the image forming unit;
A support base having a mounting surface on which the image forming apparatus is mounted;
A plurality of legs that contact the mounting surface and support the image forming apparatus;
A pin protruding upward in the vertical direction from the support base;
A fall prevention member provided in the image forming apparatus, the fall prevention member provided with a through hole into which the pin is inserted;
When a virtual closed curve connecting the plurality of legs is a bottom side outline,
The through hole and the pin are located outside the bottom outline, and the through hole is located vertically above the bottom surface of the image forming apparatus,
On the tip end side of the pin, an umbrella portion protruding in the outer diameter direction is provided,
An image forming apparatus system, wherein the outer diameter of the pin on the base side is the same as that of the umbrella. An image forming unit that forms an image on a sheet, and an image forming apparatus that includes a housing that houses the image forming unit;
A support base having a mounting surface on which the image forming apparatus is mounted;
A plurality of legs that contact the mounting surface and support the image forming apparatus;
A pin protruding upward in the vertical direction from the support base;
A fall prevention member provided in the image forming apparatus, the fall prevention member provided with a through hole into which the pin is inserted;
When a virtual closed curve connecting the plurality of legs is a bottom side outline,
The through hole and the pin are located outside the bottom outline, and the through hole is located vertically above the bottom surface of the image forming apparatus,
The drop-off prevention member includes a first plate portion extending along a side surface of the housing, and a second plate portion extending from the first plate portion in a direction intersecting the first plate portion. And
The image forming apparatus system, wherein the through hole is provided in the second plate portion. An image forming unit that forms an image on a sheet, and an image forming apparatus that includes a housing that houses the image forming unit;
A support base having a mounting surface on which the image forming apparatus is mounted;
A plurality of legs that contact the mounting surface and support the image forming apparatus;
A pin protruding upward in the vertical direction from the support base;
A fall prevention member provided in the image forming apparatus, the fall prevention member provided with a through hole into which the pin is inserted,
When a virtual closed curve connecting the plurality of legs is a bottom outer shape line,
The through hole and the pin are located outside the bottom outline, and the through hole is located vertically above the bottom surface of the image forming apparatus,
The drop-off prevention member is detachable from the image forming apparatus,
An image forming apparatus system comprising: a detection unit configured to detect whether or not the drop-off prevention member is attached to the image forming apparatus. In the image forming apparatus mounted on the mounting surface of the support base having pins protruding upward in the vertical direction,
An apparatus main body having an image forming unit for forming an image on a sheet;
A plurality of legs that contact the mounting surface and support the apparatus body;
A fixing part provided in the apparatus main body, the fixing part for fixing a drop-off prevention member provided with a through hole through which the pin is inserted,
When a virtual closed curve connecting the plurality of legs is a bottom side outline,
When the drop-off preventing member is fixed to the fixing portion, the fixing portion has the through hole positioned outside the side surface of the apparatus main body, and the through hole is vertically above the bottom surface of the apparatus main body. An image forming apparatus, wherein the drop-off preventing member is fixed so as to be positioned at a position. Oite the stopper member which detachably mounted to an image forming apparatus to be mounted to the support base mounting surface having a pin projecting toward the vertical direction upper side,
A body member having a through-hole through which the pin is inserted and a fixed portion fixed to the apparatus body of the image forming apparatus;
When a virtual closed curve connecting a plurality of legs that support the apparatus main body in contact with the placement surface is a bottom side outline,
When the main body member is fixed to the image forming apparatus, the through hole is provided so as to be located on the outer side of the bottom side outline and on the upper side in the vertical direction from the bottom surface of the image forming apparatus. de drop preventing member you characterized by being.