JP6060191B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus that forms an image on a recording sheet, and more particularly, to a housing that constitutes an outline of the image forming apparatus.

  In recent years, not only the demand for the performance of the image forming apparatus such as the printing speed, but also the demand for the external design of the image forming apparatus is increasing. In order to improve the design of the image forming apparatus, various devices have been devised for the casing constituting the outline of the image forming apparatus.

JP2013-109174A

  The preference for the appearance design of the image forming apparatus is often different for each user. In particular, the color preference of the casing that forms the outline of the image forming apparatus is generally different for each user. Further, a suitable housing color changes depending on the installation location and usage pattern of the image forming apparatus. Therefore, it is conceivable to sell image forming apparatuses having various color variations according to the user's color preference, installation location, and usage pattern. However, in this case, there is a problem in that the color of the housing cannot be changed even if the user's color preference, installation location, usage pattern, or the like changes after purchase of the image forming apparatus.

  SUMMARY An advantage of some aspects of the invention is that it is possible to replace a housing of an image forming apparatus with a housing of a color desired by a user with a simple operation.

An image reading apparatus according to an aspect of the present invention includes an image forming unit that forms an image on a recording sheet, and a housing that houses the image forming unit. A bottomed cylindrical casing main body having a side wall and a bottom integrally connected to the side wall, and attached to the casing main body so as to cover the opening of the casing main body And the image forming unit is mounted on the bottom of the housing main body separately from the housing main body, and the lid is removed from the image forming apparatus. When the image forming unit is lifted to the opening side, the image forming unit is taken out from the housing body through the opening, and the housing body is removed from the image forming apparatus. is, in a state where installed and the present image forming apparatus to the installation surface, A part of the bottom portion is separated from the installation surface, a first louver serving as an air inflow port is disposed at a portion of the bottom portion away from the installation surface, and a first air louver is provided in the lid portion. 2 louvers are provided, and no louvers serving as air inlets or outlets are provided on the side wall portion, and a gap formed between the side wall portion and the image forming portion in the housing. Is a flow path of air from the bottom side to the lid side, and the lid portion has an umbrella portion that covers at least the second louver when viewed from the opening side, and the umbrella portion is The image forming apparatus functions as a handle that is gripped by a user's hand when the lid is removed from the image forming apparatus.

  According to the present invention described above, the housing of the image forming apparatus can be replaced with a housing of a color desired by the user with a simple operation.

1 is an exploded perspective view of an image forming apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of an image forming unit and a perforation unit of an image forming apparatus according to an embodiment of the present invention. 1 is a perspective view of an image forming apparatus according to an embodiment of the present invention as viewed from the front side. 1 is a perspective view of an image forming apparatus according to an embodiment of the present invention as viewed from the rear side. 1 is a perspective view showing a state in which an opening / closing part and the like of an image forming apparatus according to an embodiment of the present invention are opened. 1 is a cross-sectional view of an image forming apparatus according to an embodiment of the present invention as viewed from the front side. 1 is a cross-sectional view of an image forming apparatus according to an embodiment of the present invention as viewed from the side. FIG. 3 is a diagram illustrating an air flow in a housing of the image forming apparatus according to the embodiment of the present disclosure.

  Hereinafter, an image forming apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view of an image forming apparatus 1 according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of the image forming unit 41 and the perforation unit 50 of the image forming apparatus 1 according to the embodiment of the present disclosure.

  As shown in FIG. 1, the image forming apparatus 1 includes a casing 10 that forms an outline of the image forming apparatus 1, an image forming unit 40 that is housed in the casing 10, a perforation unit 50, and a toner cartridge 60. And the like. The image forming apparatus 1 includes a perforation unit 50 in addition to the image forming unit 40, and performs an image forming process for forming an image on recording paper and a perforation processing process for forming a perforation on the recording paper. be able to.

  In the image forming process, first, the paper feed unit 42 of the image forming unit 40 conveys the recording paper stored in the recording paper cassette in the paper feed unit 42 toward the image forming unit 41 of the image forming unit 40 (paper feed). ) As shown in FIG. 2, the image forming unit 41 includes a photosensitive drum 412, a charging device (not shown), an exposure device 411, a developing device (not shown), and the like. A toner image is formed on the photosensitive drum 412 based on image data output from an external device such as the above. The toner image formed on the photosensitive drum 412 is transferred to the recording paper P that has been transported on the recording paper transport path. Then, a fixing process is performed on the recording paper P by a fixing unit 413 (fixing unit) having a heating roller 414 having an energization heating element as a heating source therein and a pressure roller 415 arranged to face the heating roller 414. Is done.

  The perforation unit 50 has a roller 51 having a rotation axis in a direction orthogonal to the recording paper conveyance direction, and a plurality of blades on the circumferential surface of the roller 51 arranged linearly in a direction orthogonal to the recording paper conveyance direction. And a blade portion 52. The roller 51 and the blade portion 52 are accommodated in a housing 53 provided with a handle portion 531 that serves as a handle when the user attaches / detaches the perforation unit 50 from the perforation unit holder 38 (FIG. 1). reference).

  The roller 51 of the perforation unit 50 is rotationally driven by a drive unit (not shown). As the roller 51 rotates, the state is switched between a state in which the blade portion 52 penetrates the recording paper P and a state in which the blade portion 52 does not penetrate the recording paper P. As a result, a perforation M is formed on the recording paper P along the direction orthogonal to the recording paper conveyance direction.

  The perforation unit 50 is disposed downstream of the image forming unit 41 on the recording paper conveyance path in the recording paper conveyance direction. More specifically, the perforation unit 50 is located downstream of the fixing unit 413 in the recording paper conveyance direction and upstream of the paper discharge port from which the recording paper is discharged from the image forming apparatus 1 in the recording paper conveyance direction. Arranged. As a result, the recording sheet conveyed on the recording sheet conveyance path is subjected to perforation processing after the fixing process, and then discharged to the outside of the image forming apparatus 1 by the discharge unit 43.

  FIG. 3 is a perspective view of the image forming apparatus 1 according to the embodiment of the present invention as seen from the front side. FIG. 4 is a perspective view of the image forming apparatus 1 according to the embodiment of the present invention as seen from the rear side. FIG. 5 is a perspective view showing a state where the opening / closing part 35 and the like of the image forming apparatus 1 according to the embodiment of the present invention are opened. FIG. 6 is a cross-sectional view of the image forming apparatus 1 according to the embodiment of the present invention as viewed from the front side. FIG. 7 is a cross-sectional view of the image forming apparatus 1 according to the embodiment of the present invention as viewed from the side. FIG. 8 is a view showing the air flow in the housing 10 of the image forming apparatus 1 according to the embodiment of the present invention. Hereinafter, the configuration of the housing 10 that houses the image forming unit 40, the perforation unit 50, and the like will be described with reference to FIGS. 3 to 8 as appropriate while mainly referring to FIG.

  The casing 10 includes a bottomed cylindrical casing main body 20 and a lid 30 that covers the cylindrical opening 24 of the casing main body 20. The housing body 20 includes a substantially rectangular bottom 22 and a cylindrical side wall 21 connected to the bottom 22 and integrally formed. The side wall portion 21 has an inclined shape that spreads outward as it moves away from the bottom portion 22, and thus the housing 10 has an inverted trapezoidal shape in which the upper side is longer than the lower side in a side view (FIG. 3). FIG. 4).

  Further, the side wall part 21 includes an opening / closing part 23 in which a part of the side wall part 21 can be opened and closed. By switching from the closed state (see FIG. 3) to the opened state (see FIG. 5), the paper supply unit 42 (recording paper cassette) of the image forming unit 40 accommodated in the housing 10 The user can enter the recording paper.

  A louver 25 (first louver) serving as an inflow port through which air flows into the housing 10 from the outside of the housing 10 is disposed on the bottom portion 22. As shown in FIG. 6, the louver 25 is formed at the outer edge portion 222 of the bottom portion 22 (a connecting portion where the bottom portion 22 and the side wall portion 21 are connected). The outer edge portion protrudes toward the lid portion 30 from the central portion 221 that is a portion other than the outer edge portion 222 in the bottom portion 22. For this reason, as shown in FIG. 8, when the image forming apparatus 1 is installed on a plane B (installation surface) such as a floor or a desk, the central portion 221 of the bottom 22 is in contact with the plane B such as a floor or a desk. The outer edge part 222 of the bottom part 22 will be in the state spaced apart from planes B, such as a floor and a desk. As described above, since the outer edge portion 222 of the bottom portion 22 is separated from the plane B such as a floor or a desk, air can flow into the housing 10 through the louver 25 from a gap formed therebetween (see FIG. 8 (see arrow F1). Further, since the louver 25 is disposed not at the side surface of the housing 10 but at the bottom portion 22 of the housing 10, the louver 25 is difficult to be visually recognized by the user.

  Returning to FIG. 1, the lid 30 is composed of two members, a first member 32 and a second member 31. The first member 32 has a hollow shape in which the outer edge portion is recessed toward the bottom 22 side of the housing body 20 (opposite the opening 24 side of the housing body 20). A louver 37 (second louver) serving as a discharge port through which air is discharged from the inside of the housing 10 to the outside of the housing 10 is disposed at the outer edge portion.

  Here, as shown in FIG. 6, the image forming unit 40 is separated from the housing body 20 and is placed on the center 221 of the bottom 22. For this reason, a gap S is formed between the outer edge in the housing 10, that is, between the side wall 21 and the image forming unit 40. As shown in FIG. 8, the air that has flowed into the housing 10 from the louver 25 disposed at the bottom 22 flows into the gap S (see arrow F <b> 1 in FIG. 8) and is accommodated in the housing 10. Heat exchange is performed with a heat source such as the image forming unit 40, and the image forming unit 40 is heated. The warmed air travels upward (see arrow F2 in FIG. 8) and is discharged to the outside from the louver 37 disposed on the lid 30 (see arrow F3 in FIG. 8). As described above, even if no fan is provided in the housing 10, the air flows from the lower side (the bottom portion 22 side) to the upper side (the lid portion 30 side) in the housing 10, and the air connecting the louver 25 and the louver 37. A passage (air flow path) is formed in the housing 10. For this reason, even if a fan is not provided in the housing 10, the warmed air can be efficiently discharged outside the image forming apparatus 1. In addition, since the side wall portion 21 has an inclined shape that spreads outward as it moves away from the bottom portion 22, and the gap S that becomes the air flow path becomes wider upward, It is difficult to stay in the housing 10.

  As described above, in the image forming apparatus 1 according to the embodiment of the present invention, the louver serving as the air inlet / outlet is disposed on the lid 30 and the bottom 22 of the casing 10 to be warmed. Since air is discharged to the outside of the image forming apparatus 1, it is not necessary to dispose a louver on the side wall portion 21 that is the side surface of the housing 10 unlike a general image forming apparatus. For this reason, in the image forming apparatus 1 according to the embodiment of the present invention, no louver is provided on the side wall portion 21 (see FIGS. 3 and 4). Therefore, most of the air heated by the heat source such as the image forming unit 40 except for a small amount of air discharged from the gap formed around the opening / closing portion 23 is discharged to the outside from the side wall portion 21 side. Instead, it goes upward in the gap S. At this time, the air flowing upward in the gap S contacts the side wall portion 21 and is deprived of heat by heat exchange with the side wall portion 21. Further, since the side wall portion 21 is in contact with not only the air in the gap S but also the air outside the image forming apparatus 1, the heat taken by the side wall portion 21 from the air traveling in the gap S of the image forming apparatus 1. Heat is dissipated to the outside.

  As described above, in the image forming apparatus 1 according to the embodiment of the present disclosure, the image forming unit 40 or the like serving as a heat source is disposed at the center of the housing 10, and the air flow path is disposed at the outer edge of the housing 10. By forming the air channel, the air flow path and the external air are positioned with the side wall 21 interposed therebetween. In the image forming apparatus 1 according to the embodiment of the present disclosure, no louver is provided on the side wall portion 21. For this reason, the side wall portion 21 functions not as an air outlet, but as a heat radiating portion that radiates heat from the air moving upward in the gap S and radiates the deprived heat to the outside of the image forming apparatus 1. As a result, the heat exhaust performance of the image forming apparatus 1 can be improved.

  Moreover, since the side wall part 21 has an inclined shape that spreads outward as it moves away from the bottom part 22, the area where the side wall part 21 is in contact with the warmed air in the gap S and the area in contact with the external air are , It can be made wider compared to the case without an inclined shape. For this reason, the heat radiation performance as the heat radiation part of the side wall part 21 is high compared with the case where it does not have an inclined shape.

  Returning to FIG. 1, the first member 32 is formed with an immersion portion 33 in which the central portion thereof is further immersed toward the bottom portion 22 side of the housing body 20 than the outer edge portion. The immersion portion 33 has a slope shape and serves as a recording paper tray on which the image-formed recording paper discharged from the paper discharge portion 43 of the image forming unit 40 is placed.

  Further, the first member 32 includes a perforation unit holder 38 that accommodates the perforation unit 50. By housing the perforation unit 50 in the perforation unit holder 38, the perforation unit 50 is held at a predetermined position on the recording paper conveyance path in the housing 10. The perforation unit 50 includes a plurality of types of units in which the blade size of the blade portion 52 and the interval between adjacent blades are different. The user opens the opening / closing part 35 of the second member 31, takes out the perforation unit 50 from the perforation unit holder 38, and accommodates the desired type of perforation unit 50 in the perforation unit holder 38 (see FIG. 5). ), An image-formed recording sheet on which a desired type of perforation is formed can be obtained. As described above, the perforation unit 50 is detachably disposed on the apparatus main body of the image forming apparatus 1.

  Here, as shown in FIG. 7, a conveyance guide 44 is provided on the side surface of the image forming unit 40. The conveyance guide 44 can be opened and closed in the direction of the arrow in FIG. 7 with a fulcrum 45 provided in the lower part thereof as a center. In a state where the conveyance guide 44 is opened, the recording paper conveyance path in the image forming unit 40 is exposed.

  When the opening / closing part 35 of the second member 31 is opened and the perforation unit 50 is taken out from the housing 10, a space is formed in which a user's hand can enter the housing 10 from the upper surface. When a recording paper jam (jamming) occurs, the user can perform a work (jam processing) of taking out the recording paper jammed in the recording paper conveyance path by inserting a hand into the space and opening the conveyance guide 44. It becomes possible. Since the side wall portion 21 has an inclined shape that spreads outward as it moves away from the bottom portion 22, it is easy to perform jam processing performed by inserting a hand from above.

  Returning to FIG. 1, the second member 31 is disposed above the first member 32 and covers at least the louver 37 formed on the first member 32 when viewed from the opening 24 side of the housing body 20. Act as a department. As a result, as shown in FIG. 8, in a state where the image forming apparatus 1 is installed on a plane B such as a floor or a desk, air can be discharged from the louver 37 to the outside (see arrow F3 in FIG. 8). The louver 37 is hardly visible to the user (see FIGS. 3 and 4). In addition, even when the user approaches the image forming apparatus 1, the warm air discharged from the louver 37 to the outside of the apparatus is difficult to directly hit the user.

  Moreover, as shown in FIG. 8, the 2nd member 31 as an umbrella part is located in the same position as the edge part in the side of the cover part 30 of the side wall part 21 in a height direction. And the louver 37 is located in the bottom part 22 side rather than the edge part in the cover part 30 side of the side wall part 21 in the height direction. Thereby, in addition to the line of sight from the upper side (the lid part 30 side) with respect to the louver 37 being blocked by the second member 31 as the umbrella part, the line of sight from the side (side wall part 21 side) with respect to the louver 37 Therefore, the louver 37 is more difficult to be visually recognized by the user. In addition, the 2nd member 31 may be located in the bottom part 22 side rather than the said edge part rather than being located in the same position as the edge part in the cover part 30 side of the side wall part 21. FIG. Even in this case, a side line of sight with respect to the louver 37 is blocked by the side wall 21.

  Returning to FIG. 1, the second member 31 has an opening 34 formed at the center thereof. The opening 34 serves as a paper discharge port through which the recording paper on which an image is formed by the image forming unit 40 is discharged toward the outside of the apparatus.

  Since the discharge outlet for discharging the recording paper on which the image has been formed is formed in the lid 30, the fixing unit 413 disposed near the discharge outlet is provided on the lid 30 side in the housing 10. Located in the area. As described above, since the gap S serving as the air flow path becomes wider upward (toward the lid portion 30), the gap S located in the vicinity of the fixing unit 413 is wide. The fixing unit 413 generates the largest amount of heat among the components housed in the housing 10. However, since the gap S located in the vicinity of the fixing unit 413 is wide as described above, the fixing unit 413 emits from the fixing unit 413. The generated heat does not easily stay in the housing 10, and the heat can be efficiently radiated to the outside of the image forming apparatus 1.

  The second member 31 includes a toner cartridge holder 36 that houses the toner cartridge 60. By accommodating the toner cartridge 60 in the toner cartridge holder 36 (see FIG. 5), the toner cartridge 60 is held at a predetermined position in the housing 10 and developed by the image forming unit 41 of the image forming unit 40. It becomes possible to supply toner to a portion (not shown).

  Further, the second member 31 is provided with an operation unit 70 including physical keys such as a power button, an OK button, and a cancel button. The user can input an instruction regarding image formation and an instruction regarding perforation processing to the image forming apparatus 1 by performing a pressing operation or the like on the operation unit 70.

Hereinafter, the external shape and the like of the housing 10 will be further described. As described above, the lid 30 is attached to the housing main body 20 so as to cover the cylindrical opening 24 of the housing main body 20. The user can remove the lid 30 from the housing 10.

  As shown in FIG. 6, a gap is formed between the first member 32 and the second member 31 of the lid portion 30. By inserting a hand into the gap and lifting it upward, the lid portion 30 is removed. It can be removed from the housing 10. That is, the second member 31 of the lid 30 is gripped by the user's hand when removing the lid 30 from the housing 10 in addition to the role of an umbrella that covers the louver 37 formed on the first member 32. Plays a role as a handle.

  When the lid 30 is removed from the housing 10, the user can grasp the image forming unit 40 placed on the central portion 221 of the bottom 22, and the image forming unit 40 can be externally removed from the housing 10 through the opening 24. Can be taken out. As described above, the side wall portion 21 has an inclined shape that spreads outward as it is away from the bottom portion 22, and the opening area of the opening portion 24 is larger than that of the bottom portion 22, so that the image forming unit 40 is mounted on the casing 10. It is easy to take out from. When the image forming unit 40 is removed from the housing 10, only the housing body 20 remains. That is, the housing body 20 is removed from the image forming apparatus 1.

  Here, the housing body 20 includes a plurality of types of housings having different colors. The user selects the casing body 20 having a desired color, and accommodates the image forming unit 40 once removed in the selected casing body 20. Then, the lid 30 is attached to the housing body 20 and the assembly of the image forming apparatus 1 is completed. As described above, the casing main body 20 has a bottomed cylindrical shape integrally formed by connecting the cylindrical side wall portion 21 and the side portion 22. The housing body 20 can be replaced by a simple operation of taking out the image forming unit 40 from the body body 20. The side wall portion 21 which is a side surface portion of the image forming apparatus 1 is easily noticeable and has a great influence on the design of the entire image forming apparatus 1. The user can greatly change the design of the entire image forming apparatus 1 by replacing the housing body 20 to make the housing body 20 of a desired color.

  The housing body 20 is made of a resin material such as polycarbonate. The housing body 20 is manufactured by injection molding of the resin material. Since the housing body 20 has an extremely simple shape rather than a complicated shape, the manufacturing cost can be reduced. In addition, since the housing body 20 of various colors can be manufactured by mixing a pigment in a resin material such as polycarbonate, it is manufactured in comparison with the case where the color of the housing body 20 is changed by painting. Cost can be reduced. That is, it is possible to provide the housing main body 20 with many color variations to the user at a low cost.

  As shown in FIGS. 3 and 4, no louver is provided on the side wall 21 of the housing body 20. Further, the operation unit 70 including physical keys is also disposed on the lid 30 side, and is not disposed on the side wall 21. Thus, except for the opening / closing part 23, the side wall part 21 of the housing body part 20 has a flat surface without any irregularities such as protrusions, grooves, dents and holes. In a general image forming apparatus, a louver or the like serving as an air inlet or outlet is disposed on a side surface of the image forming apparatus that is easily noticeable to the user, and thus the design is greatly impaired. On the other hand, in the image forming apparatus 1 according to the embodiment of the present invention, the louver serving as an air inlet or outlet is configured to be able to exhaust heat without being provided in the side wall portion 21. Unevenness such as protrusions, grooves, dents, holes, etc. can be reduced as much as possible. Thereby, the flat design which comprised the side wall part 21 with the flat surface can be implement | achieved, and high designability can be provided.

  As described above, in the image forming apparatus 1 according to the embodiment of the present invention, the louver 25 disposed on the bottom 22 as an air inlet and the louver disposed on the lid 30 as an air outlet. 37 is also difficult to be visually recognized by the user. For this reason, the louver 25 and the louver 37 are unlikely to impair the design of the image forming apparatus 1.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made.

  For example, the lid 30 may be configured to be connected to the image forming unit 40. Thus, the user grasps the second member 31 of the lid 30 as a handle and removes the lid 30 from the housing 10, whereby the image forming unit 40 is removed from the housing 10 together with the lid 30. Since it is possible to remove the lid 30 and the image forming unit 40 in one work process, the work process required when replacing the housing body 20 can be reduced.

  Further, the opening / closing part 23 may not be provided on the side wall part 21 of the housing body part 20. Thereby, unevenness | corrugations, such as a processus | protrusion, a groove | channel, a hollow, and a hole in the side wall part 21 which is easy to be visible to a user, can be reduced more. In this case, for example, a configuration that replaces the opening / closing portion 23 is provided in the lid portion 30.

  1, 3, 4, and the like in the above-described embodiment, all four surfaces constituting the cylindrical side wall portion 21 have an inclined shape that spreads outward as the distance from the bottom portion 22 increases. However, the present invention is not necessarily limited to this case. If at least one surface of the plurality of surfaces constituting the side wall portion 21 has an inclined shape that spreads outward as it moves away from the bottom portion 22, the above-described warmed air stays in the housing 10. It is possible to obtain an effect related to heat dissipation such as difficulty, and an effect related to workability such that the image forming unit 40 can be easily taken out from the housing 10.

  Further, in the above embodiment, when the opening / closing part 35 of the second member 31 is opened and the perforation unit 50 is taken out from the housing 10, a hand is inserted from above into the space formed inside the housing 10. However, the present invention is not necessarily limited to this case. You may provide the opening-closing part in which the one part was able to be opened and closed in the back side of the side wall part 21. FIG. By opening the opening / closing part, the conveyance guide 44 is exposed and a jam can be processed.

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 10 Case 20 Case main-body part 21 Side wall part 22 Bottom part 25 Louver (1st louver)
30 Lid 31 Second member 32 First member 37 Louver (second louver)
40 Image forming unit 41 Image forming unit 42 Paper feeding unit 43 Paper discharging unit 50 Perforation unit

Claims (8)

In an image forming apparatus including an image forming unit that forms an image on a recording sheet and a housing that houses the image forming unit.
The housing is
A cylindrical side wall portion, and a bottomed cylindrical case body portion having a bottom portion integrally connected to the side wall portion;
A lid attached to the housing body so as to cover the opening of the housing body,
The image forming unit is separated from the housing main body and is placed on the bottom in the housing main body,
When the lid is removed from the image forming apparatus and the image forming unit is lifted to the opening side, the image forming unit is taken out from the inside of the housing body through the opening, and the main image is formed. It said housing body portion is removed from the forming apparatus,
In a state where the image forming apparatus is installed on the installation surface, a part of the bottom is separated from the installation surface,
A first louver serving as an air inlet is disposed in a portion of the bottom portion away from the installation surface, and a second louver serving as an air outlet is disposed in the lid.
The side wall is not provided with a louver serving as an air inlet or outlet,
A gap formed between the side wall portion and the image forming portion in the housing serves as an air flow path from the bottom side to the lid side,
The lid portion has an umbrella portion that covers at least the second louver when viewed from the opening side, and the umbrella portion is gripped by a user's hand when removing the lid portion from the image forming apparatus. As an image forming apparatus. In an image forming apparatus including an image forming unit that forms an image on a recording sheet and a housing that houses the image forming unit.
The housing is
A cylindrical side wall portion, and a bottomed cylindrical case body portion having a bottom portion integrally connected to the side wall portion;
A lid attached to the housing body so as to cover the opening of the housing body,
The image forming unit is separated from the housing main body and is placed on the bottom in the housing main body,
When the lid is removed from the image forming apparatus and the image forming unit is lifted to the opening side, the image forming unit is taken out from the inside of the housing body through the opening, and the main image is formed. The housing body is removed from the forming apparatus,
The lid is connected to the image forming unit,
By removing the lid from the housing main body, the image forming unit is detached from the housing body portion integrally with the lid portion, the image forming apparatus. In an image forming apparatus including an image forming unit that forms an image on a recording sheet and a housing that houses the image forming unit.
The housing is
A cylindrical side wall portion, and a bottomed cylindrical case body portion having a bottom portion integrally connected to the side wall portion;
A lid attached to the housing body so as to cover the opening of the housing body,
The image forming unit is separated from the housing main body and is placed on the bottom in the housing main body,
When the lid is removed from the image forming apparatus and the image forming unit is lifted to the opening side, the image forming unit is taken out from the inside of the housing body through the opening, and the main image is formed. The housing body is removed from the forming apparatus,
The side wall part has an opening / closing part in which a part of the side wall part can be opened and closed,
The closing section that is switched to the open state from the closed state, the user is the recording paper can be charged state to the recording paper cassette which is accommodated in an enclosure, the image forming apparatus. In a state where the image forming apparatus is installed on the installation surface, a part of the bottom is separated from the installation surface,
A first louver serving as an air inlet is disposed in a portion of the bottom portion away from the installation surface, and a second louver serving as an air outlet is disposed in the lid.
The side wall is not provided with a louver serving as an air inlet or outlet,
The image according to claim 2 or 3 , wherein a gap formed between the side wall portion and the image forming portion in the housing serves as an air flow path from the bottom side toward the lid portion side. Forming equipment. The lid portion has an umbrella portion that covers at least the second louver when viewed from the opening side, and the umbrella portion is gripped by a user's hand when removing the lid portion from the image forming apparatus. The image forming apparatus according to claim 4, which functions as: The lid portion has a hollow shape in which an outer edge portion is immersed toward the bottom side,
The second louver is disposed on the outer edge portion having the hollow shape,
The second louver is located on the bottom side in the height direction from the end of the side wall on the opening side,
The umbrella portion in the height direction, located at the same position as the end portion in the opening side of the sidewall portion, or is located on the bottom side than the end portion, according to claim 1 or claim 5 The image forming apparatus described in 1. The said side wall part has an inclined shape which spreads toward the outer side as at least one surface is separated from the said bottom part among several surfaces which comprise a cylinder shape, The Claim 1 thru | or 6 of any one of Claim 6 characterized by the above-mentioned. Image forming apparatus.   The image forming apparatus according to claim 1, wherein the housing body is made of a resin material.

Images