Sheet storage device and image forming apparatus

Abstract

To provide a sheet storage device in which assembly workability and maintainability are improved, and an image formation device comprising the same.SOLUTION: A first light-emitting member and a second light-emitting member are supported by one holder member. A first cover part has a first hole formed at a position facing the first light-emitting member in a drawing direction so that light irradiated from the first light-emitting member passes through it. A second cover part has a second hole formed at a position facing the second light-emitting member in the drawing direction so that light irradiated from the second light-emitting member passes through it.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a sheet storage device that stores sheets and an image forming apparatus including the same. [Background technology]

[0002] Conventionally, an image forming apparatus has been proposed that includes a plurality of paper feed trays each for storing sheets, and forms images on the fed sheets (see Patent Document 1). Illuminating members are provided corresponding to the plurality of paper feed trays, and the illuminating member corresponding to the paper feed tray in which the sheet is being fed emits light, so that the user can recognize that the paper feed tray cannot be refilled with sheets. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-238566 A Summary of the Invention [Problem to be solved by the invention]

[0004] The light emitting member described in Patent Document 1 has an LED light emitting element arranged in the main body of the image forming device, and a light guiding member arranged in the paper feed tray. The main body is also provided with a shutter member that moves in conjunction with the movement of the paper feed tray, and the shutter member adjusts the amount of light reaching the user from the LED light emitting element.

[0005] These members are provided according to the number of paper feed trays, and the number of parts is large and assembly to the paper feed trays is not easy, which reduces assembly workability and maintenance.

[0006] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a sheet storage device that is easy to assemble and maintain, and an image forming apparatus including the same. [Means for solving the problem]

[0007] The present invention , S The sheet storage device includes a device body, a first storage means that is provided so as to be able to be pulled out in a pull-out direction relative to the device body and that stores sheets, a second storage means that is provided so as to be able to be pulled out in the pull-out direction relative to the device body, that stores sheets, and that is disposed adjacent to the first storage means in a vertical direction, and Installation the first storage means has a first storage section for storing sheets, and a first cover section that is provided downstream of the first storage section in the pull-out direction and that constitutes a part of the exterior of the sheet storage device; the second storage means has a second storage section for storing sheets, and a second cover section that is provided downstream of the second storage section in the pull-out direction and that constitutes a part of the exterior of the sheet storage device; the first cover section is formed at a position facing the first light emitting member in the pull-out direction so that light irradiated from the first light emitting member can pass through the first storage means; the second cover portion has a second hole formed at a position facing the second light-emitting member in the pull-out direction so that light irradiated from the second light-emitting member can pass through; the holder member has a base portion attached to the device main body, a first holding portion extending from the base portion in the pull-out direction and holding the first light-emitting member, and a second holding portion extending from the base portion in the pull-out direction and holding the second light-emitting member, the first holding portion being adjacent to the first hole when the first storage means is attached to the device main body, and the second holding portion being adjacent to the second hole when the second storage means is attached to the device main body. The present invention also provides a sheet storage device comprising: an apparatus main body; a first storage means provided so as to be able to be pulled out in a pull-out direction relative to the apparatus main body and for storing sheets; a second storage means provided so as to be able to be pulled out in the pull-out direction relative to the apparatus main body, for storing sheets, and disposed adjacent to the first storage means in a vertical direction; one holder member supported by the apparatus main body; and a first light-emitting member and a second light-emitting member supported by the holder member and for emitting light, wherein the first storage means has a first storage section for storing sheets, and a first cover section provided downstream of the first storage section in the pull-out direction and constituting a part of an exterior of the sheet storage device, and the second storage means stores the sheets. The sheet storage device has a second storage section for storing sheets, and a second cover section that is provided downstream of the second storage section in the pull-out direction and forms part of the exterior of the sheet storage device, the first cover section has a first hole formed in a position facing the first light-emitting member in the pull-out direction so that light emitted from the first light-emitting member can pass through, and the second cover section has a second hole formed in a position facing the second light-emitting member in the pull-out direction so that light emitted from the second light-emitting member can pass through, and further comprises a sensor supported by the holder member for detecting temperature and humidity, and the first light-emitting member and the second light-emitting member are each composed of a light-emitting diode. Effect of the Invention

[0008] According to the present invention, the ease of assembly and maintenance can be improved. [Brief description of the drawings]

[0009] [Figure 1] 1 is an overall schematic view showing a printer according to a first embodiment. [Diagram 2] FIG. 4A is a perspective view showing the feeding cassette attached to the apparatus main body, and FIG. 4B is a perspective view showing the feeding cassette pulled out from the apparatus main body. [Diagram 3] FIG. [Figure 4]4A is a side view showing the positional relationship between a cassette front cover and a holder member, FIG. 4B is a side view showing the holder member, and FIG. 4C is a cross-sectional view showing the internal configuration of the holder member. [Diagram 5] 10A is a side view showing the positional relationship between a cassette front cover and a holder member according to a second embodiment, FIG. 10B is a side view showing the holder member, and FIG. 10C is a cross-sectional view showing the internal configuration of the holder member. [Figure 6] 13A is a perspective view showing a cassette front cover with a display member removed, according to a third embodiment, and FIG. 13B is a perspective view showing the cassette front cover with a display member attached. [Figure 7] 1A is a schematic diagram showing the gap between the cassette front cover and the display member, FIG. 1B is a front view showing an information member being inserted into the gap, and FIG. 1C is a front view showing the information member held by the display member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] <First embodiment> [Overall structure] First, a first embodiment of the present invention will be described. A printer 100 as an image forming apparatus according to the first embodiment is an electrophotographic full-color laser beam printer that forms an image on a sheet S as a recording material based on image information read from an original or image information received from an external device. Sheets used as recording materials or originals include paper such as plain paper and thick paper, plastic films such as sheets for overhead projectors, cloth, sheet materials with surface treatments such as coated paper, and sheet materials with special shapes such as envelopes and index paper.

[0011] 1, the printer 100 includes a reader unit 21 that reads an image of a document, and a device main body 90 provided below the reader unit 21. The device main body 90 includes a cassette feed unit 60, an image forming unit 1, a fixing device 5, and a manual feed unit 2.

[0012] The image forming unit 1 has scanner units 13Y, 13M, 13C, and 13K, and four process cartridges 1Y, 1M, 1C, and 1K that form images of four colors: yellow (Y), magenta (M), cyan (C), and black (K). The four process cartridges 1Y to 1K have a common configuration except that the colors of the images they form are different. Below, only the image forming process of the process cartridge 1Y will be described, and descriptions of the process cartridges 1M, 1C, and 1K will be omitted.

[0013] The scanner unit 13Y irradiates a laser beam toward the photosensitive drum 11 of the process cartridge 1Y based on the input image information. At this time, the photosensitive drum 11 is pre-charged by the charger 12, and an electrostatic latent image is formed on the photosensitive drum 11 by irradiating it with the laser beam. Thereafter, the electrostatic latent image is developed by the developing unit 14, and a yellow (Y) toner image is formed on the photosensitive drum 11.

[0014] Similarly, magenta (M), cyan (C) and black (K) toner images are formed on the photosensitive drums of the process cartridges 1M, 1C and 1K. The toner images of each color formed on each photosensitive drum are transferred to the intermediate transfer belt 31 by the primary transfer roller 35 and are transported to the secondary transfer inner roller 32 by the rotating intermediate transfer belt 31. Adherents such as residual toner remaining on the photosensitive drum without being transferred to the intermediate transfer belt 31 are removed by the cleaning blade 15. The image forming process for each color is performed at a timing to overlap the upstream toner image that has been primarily transferred onto the intermediate transfer belt 31.

[0015] In parallel with the above-mentioned image forming process, a sheet S is fed from the cassette feeding section 60 or the manual feeding section 2. The cassette feeding section 60 has three stages of feeding cassettes 61, 62, and 63 and feeding units 71, 72, and 73 corresponding to the respective feeding cassettes, and feeds the sheet S from a feeding cassette that is appropriately selected according to, for example, the sheet size.

[0016] Each of the feeding units 71 to 73 includes a pickup roller 7a that feeds out the top sheet S from the feeding cassette, a feed roller 7b that receives and conveys the sheet S from the pickup roller 7a, and a retard roller 7c that contacts the feed roller 7b. A driving force in a direction opposite to the rotation of the feed roller 7b is input to the retard roller 7c via a torque limiter. The retard roller 7c applies a friction force in a direction opposite to the feeding direction to the sheet that enters the separation nip between the feed roller 7b and the retard roller 7c, thereby pushing back the sheets other than the top sheet S to the feeding cassette. Such feeding units 71 to 73 are an example of a feeding device that feeds sheets, and may use an air feeding method that sucks air to adsorb the top sheet to a belt and feed it. Also, a pad-shaped friction member may be used instead of the retard roller 7c as a separating member that separates the fed sheets one by one.

[0017] The manual feed section 2 has a manual feed tray 3 that protrudes to the side of the device body 90, and a feed unit 70 that feeds the sheet S set in the manual feed tray 3. The basic configuration of the feed unit 70 is similar to the feed units 71 to 73 of the cassette feed section 60. That is, the feed unit 70 includes a pickup roller 70a that feeds the uppermost sheet S from the manual feed tray 3, a feed roller 70b that receives and conveys the sheet S from the pickup roller, and a retard roller 70c that comes into contact with the feed roller 70b.

[0018] The sheet S fed from the cassette feeding section 60 or the manual feeding section 2 has its skew corrected by the registration roller pair 40 and is fed at a predetermined feeding timing. Then, the full-color toner image on the intermediate transfer belt 31 is transferred onto the sheet S by the secondary transfer inner roller 32 and the secondary transfer outer roller 41. Adherents such as transfer residual toner remaining on the intermediate transfer belt 31 without being transferred to the sheet S are removed by a cleaning blade 101. The sheet S with the transferred toner image is fed by the belt feeder 42, and predetermined heat and pressure are applied in the fixing device 5 to melt and fix the toner. The sheet S that has passed through the fixing device 5 is discharged from the discharge port 50 to the outside of the machine.

[0019] When forming images on both sides of a sheet, the sheet S, on which an image is formed on the first side and which has passed through the fixing device 5, is conveyed to the reversing conveying path 52, and is switched back and conveyed so as to be reversed. Then, the sheet S is conveyed again to the pair of registration rollers 40 via the double-sided conveying path 85, and a toner image is transferred to the second side by the inner secondary transfer roller 32 and the outer secondary transfer roller 41.

[0020] The image forming unit 1 provided in the printer 100 of this embodiment is an example of an image forming unit that forms an image on a sheet, and a direct transfer type electrophotographic unit that transfers a toner image from a photoconductor to a sheet without passing through an intermediate transfer body may be used. Also, an image forming unit other than an electrophotographic type, such as an inkjet type image forming unit or an offset printing type printing mechanism, may be used.

[0021] [Cassette feeding section] Next, the cassette feeding section 60 as a sheet storage device will be described in detail with reference to Figures 2(a) to 3. As shown in Figures 2(a) and 2(b), the cassette feeding section 60 has three tiers of feeding cassettes 61, 62, and 63 arranged adjacent to each other in the vertical direction, and these feeding cassettes 61, 62, and 63 are provided so as to be capable of being pulled out from the device main body 90 in a pull-out direction DD.

[0022] The feeding cassette 61 as the first storage means has a storage section 161 as a first storage section that stores sheets, and a cassette front cover 81 as a first cover section provided downstream of the storage section 161 in the pull-out direction DD. The cassette front cover 81 is fixed to the storage section 161, and has a gripping portion 81a that allows the user to easily pull out the feeding cassette 61 by gripping it.

[0023] Similarly, the feeding cassette 62 as the second storage means has a storage section 162 as a second storage section that stores sheets, and a cassette front cover 82 as a second cover section provided downstream of the storage section 162 in the pull-out direction DD. The cassette front cover 82 is fixed to the storage section 162, and has a gripping section 82a that allows the user to easily pull out the feeding cassette 62 by gripping it.

[0024] Furthermore, the feeding cassette 63 has a storage section 163 that stores sheets, and a cassette front cover 83 provided downstream of the storage section 163 in the pull-out direction DD. The cassette front cover 83 is fixed to the storage section 163, and has a gripping section 83a that allows the user to easily pull out the feeding cassette 63 by gripping it.

[0025] The cassette front covers 81, 82, and 83 constitute a part of the exterior of the cassette feeding unit 60 or the printer 100. The cassette front covers 81, 82, and 83 are formed with holes 171, 172, and 173 that penetrate in the pulling-out direction DD, respectively. These holes 171, 172, and 173 are provided at the right end portions of the cassette front covers 81, 82, and 83.

[0026] 3, a holder member 65 is supported on a support column 66 on the right front side of the device main body 90. The holder member 65 has a base portion 180 attached to the support column 66, and holding portions 181, 182, and 183 extending in the pull-out direction from the base portion 180. The base portion 180 is fixed to the support column 66 with screws, with the upper and lower mounting surfaces 84, 84 mounted on the support column 66. The holding portions 181, 182, and 183 are aligned vertically and spaced apart.

[0027] As shown in Fig. 3 to Fig. 4(c), holding portion 181 as a first holding portion holds light emitting member 191 as a first light emitting member, and has a hole 201 through which light irradiated from light emitting member 191 passes. Holding portion 182 as a second holding portion holds light emitting member 192 as a second light emitting member, and has a hole 202 through which light irradiated from light emitting member 192 passes. Holding portion 183 holds light emitting member 193, and has a hole 203 through which light irradiated from light emitting member 193 passes. Light emitting members 191, 192, and 193 are each composed of an LED, i.e., a light emitting diode.

[0028] When the feeding cassette 61 is attached to the device body 90, the holding portion 181 is adjacent to the hole 171, which serves as a first hole, of the cassette front cover 81. At this time, as shown in Figures 4(a) and (b), the light emitting member 191 faces the hole 171 in the pulling-out direction DD and is disposed adjacent to it. Therefore, light emitted from the light emitting member 191 passes through the hole 201 of the holding portion 181 and the hole 171 of the feeding cassette 61, and is illuminated toward the outside of the device.

[0029] When the feeding cassette 62 is attached to the device body 90, the holding portion 182 is adjacent to the hole 172 serving as the second hole of the cassette front cover 82. At this time, as shown in Figures 4(a) and (b), the light emitting member 192 faces the hole 172 in the pulling-out direction DD and is disposed adjacent to it. Therefore, light emitted from the light emitting member 192 passes through the hole 202 of the holding portion 182 and the hole 172 of the feeding cassette 62, and is illuminated toward the outside of the device.

[0030] Furthermore, when the feeding cassette 63 is attached to the apparatus main body 90, the holding portion 183 is adjacent to the hole 173 of the cassette front cover 83. At this time, as shown in Figures 4 (a) and (b), the light emitting member 193 faces the hole 173 in the pulling-out direction DD and is disposed close to it. Therefore, light emitted from the light emitting member 193 passes through the hole 203 of the holding portion 183 and the hole 173 of the feeding cassette 63, and is illuminated toward the outside of the apparatus.

[0031] Fig. 4(c) is a cross-sectional view showing the inside of the holder member 65. As shown in Figs. 4(b) and (c), the light emitting members 191, 192, and 193 are connected to each other by an electric signal line 68. The electric signal line 68 and an electric signal line 69 that is connected to a control board (not shown) of the printer 100 are connected at a connection part 74.

[0032] As described above, in this embodiment, the light emitting members 191, 192, and 193 and the electric signal line 68 corresponding to the feeding cassettes 61, 62, and 63, respectively, are held in one holder member 65, so that the holder member 65 constitutes an assembly. Therefore, the holder member 65 thus assembled can be easily attached to and detached from the support 66 of the device main body 90, improving the ease of assembly and maintenance.

[0033] Furthermore, when the feeding cassettes 61, 62, 63 are attached to the device body 90, the light emitting members 191, 192, 193 are disposed adjacent to the holes 171, 172, 173 of the cassette front covers 81, 82, 83. This eliminates the need to provide a light guiding member for guiding light from the light emitting members to the cassette front covers, and reduces the number of components of the cassette feeding unit 60. This improves assembly workability and maintainability.

[0034] <Second embodiment> Next, a second embodiment of the present invention will be described, in which only a temperature and humidity sensor 75 is added to the configuration of the first embodiment. Therefore, the same configuration as the first embodiment will be described by omitting illustrations or by assigning the same reference numerals in the drawings.

[0035] In order to stabilize the quality of the output produced by the image forming apparatus, the image forming apparatus may be controlled according to the environment in which it is used. For example, the temperature and humidity of the environment in which the image forming apparatus is used may be measured to control the strength of the dehumidification function of the sheet conveying path, or the temperature of a heat application type fixing unit. In this case, if the temperature and humidity sensor is placed close to the heat generating parts or the intake and exhaust vents of the image forming apparatus itself, the environment cannot be accurately measured, so it is necessary to place the temperature and humidity sensor as far away as possible from these heat generating parts and intake and exhaust vents.

[0036] For this reason, in many image forming devices, the optimal location for the temperature and humidity sensor is generally near the cassette front cover of the feed cassette, avoiding "the fixing unit and the sheet transport path downstream of the fixing unit," "near the image forming unit," and "the rear of the image forming device where the intake and exhaust vents are located."

[0037] 5(a) to 5(c), in this embodiment, the holder member 65 holds a temperature and humidity sensor 75 as a sensor for detecting temperature and humidity. More specifically, the base portion 180 of the holder member 65 has a sensor holding portion 79 that holds the temperature and humidity sensor 75. A sensor electric signal line 80 connected to the temperature and humidity sensor 75 is provided inside the holder member 65. The electric signal line 68 and the sensor electric signal line 80 are connected to an electric signal line 69 connected to a control board (not shown) of the printer 100 at a connection portion 74.

[0038] The light emitting members 191, 192, and 193 are each composed of an LED, i.e., a light emitting diode, and generate a relatively small amount of heat, so that they have little effect on the temperature and humidity sensor 75. Furthermore, the temperature and humidity sensor 75 is disposed so as not to overlap the light emitting members 191, 192, and 193 when viewed in the vertical direction, so that the heat of the light emitting members 191, 192, and 193 is less likely to be transmitted to the temperature and humidity sensor 75.

[0039] As described above, in this embodiment, the holder member 65 holds the light emitting members 191, 192, 193 and the temperature and humidity sensor 75. The holder member 65 thus assembled can be easily attached to and detached from the support 66 of the device body 90, improving the ease of assembly and maintenance. In addition, since there is no need to provide a dedicated member for holding the temperature and humidity sensor 75, costs can be reduced.

[0040] <Third embodiment> Next, a third embodiment of the present invention will be described, in which only a display member 87 is added to the configuration of the first embodiment. Therefore, the same configuration as the first embodiment will be described by omitting illustrations or by assigning the same reference numerals in the drawings.

[0041] Some users of the image forming apparatus wish to know the brand and size of the sheets set in each feeding cassette. Therefore, in this embodiment, each feeding cassette is provided with a display member 87 capable of displaying the brand and size of the sheets. Below, the display member 87 provided on the cassette front cover 81 of the feeding cassette 61 will be described, but the same applies to the feeding cassettes 62 and 63.

[0042] Fig. 6(a) is a perspective view showing the cassette front cover 81 with the display member 87 removed, and Fig. 6(b) is a perspective view showing the cassette front cover 81 with the display member 87 attached. As shown in Figs. 6(a) and 6(b), a hole 171 is formed in the cassette front cover 81 of the feeding cassette 61. Also, the cassette front cover 81 is provided with an attachment portion 86 to which the display member 87 can be attached. The display member 87 as a support member is fastened to the attachment portion 86 with a screw.

[0043] A pattern (illustration) 88 is printed on the display member 87 at a position facing the hole 171. The pattern 88 shown in FIG. 6(b) is an example of a pattern, and represents an image of sheets stored in the feeding cassette 61.

[0044] As shown in Fig. 7(a), the display member 87 is attached to the exterior surface 81b of the cassette front cover 81 with at least a partial gap. The information member 97 is attached between the exterior surface 81b and the display member 87 by inserting the information member 97 into the gap 95. The information member 97 has information about the sheets to be used in the feeding cassette 61 written thereon, for example. In Figs. 7(b) and (c), the size of the sheets is written on the information member 97.

[0045] The display member 87 is a transparent member having a visible light transmittance of 50% to 100%, and the information written on the information member 97 can be seen through the display member 87. In addition, it is preferable that the display member 87 is provided with a recess 87a so that the information member 97 can be easily attached and detached from the gap 95.

[0046] As described above, in this embodiment, the display member 87 on which the pattern 88 is printed is provided on the cassette front cover 81. The pattern 88 is illuminated by the light-emitting member 191, so that the state of the cassette feeding section 60 according to the pattern 88 can be communicated to the user. For example, the state of the cassette feeding section 60 includes a state in which the sheets loaded in the feeding cassette are being fed, a state in which the sheets in the feeding cassette are insufficient, etc.

[0047] In addition, since an information member 97 on which sheet size information and the like is written can be held between the display member 87 and the cassette front cover 81, the user can easily recognize the information on the sheets in the feeding cassette 61.

[0048] <Other embodiments> In the third embodiment, the display member 87 is made of a transparent member, but is not limited to this. For example, even if the transmittance of the display member 87 is less than 50%, the display member 87 may have a notch or a hole so that the user can visually recognize the information member 97.

[0049] In the third embodiment, a pattern is printed on the display member 87, but this is not limiting. For example, the display member 87 may be used as a member for holding the information member 97 without having a pattern printed thereon.

[0050] In addition, in any of the embodiments described above, light emitting diodes are used as the light emitting members 191, 192, and 193, but the present invention is not limited to this, and other light emitting members such as incandescent lamps and fluorescent lamps may be used.

[0051] In addition, in each of the above-mentioned embodiments, the printer 100 having three stages of feeding cassettes 61, 62, and 63 has been described as an example, but the present invention is not limited to this. In other words, the number of feeding cassettes may be any number greater than or equal to one. In addition, the present invention may be applied to an optional feeder connected to the printer 100, instead of the cassette feeding unit 60 provided in the device main body 90, or to a discharged sheet storage device on which sheets on which images have been formed are stacked. [Explanation of symbols]

[0052] 60: sheet storage device (cassette feeding section) / 61: first storage means (feeding cassette) / 62: second storage means (feeding cassette) / 65: holder member / 75: sensor (temperature and humidity sensor) / 81: first cover section (cassette front cover) / 82: second cover section (cassette front cover) / 87: support member (display member) / 95: gap / 100: image forming device (printer) / 161: first storage section (storage section) / 162: second storage section (storage section) / 171: first hole (hole) / 172: second hole (hole) / 180: base section / 181: first holding section (holding section) / 182: second holding section (holding section) / 191: first light-emitting member (light-emitting member) / 192: second light-emitting member (light-emitting member) / DD: pull-out direction

Claims

1. A device body, a first storage means that is provided so as to be capable of being pulled out in a pull-out direction relative to the device body and that stores sheets; a second storage means that is provided so as to be withdrawable in a withdrawal direction with respect to the device body, that stores sheets, and that is disposed adjacent to the first storage means in a vertical direction; One holder member attached to the device body; a first light emitting member and a second light emitting member supported by the holder member and configured to emit light; the first storage means includes a first storage section that stores the sheets, and a first cover section that is provided downstream of the first storage section in the pull-out direction and that constitutes a part of an exterior of the sheet storage device, the second storage means includes a second storage section that stores the sheets, and a second cover section that is provided downstream of the second storage section in the pull-out direction and that constitutes a part of an exterior of the sheet storage device, the first cover portion has a first hole formed at a position facing the first light emitting member in the drawing direction so that light emitted from the first light emitting member passes through the first hole; the second cover portion has a second hole formed at a position facing the second light emitting member in the drawing direction so that light emitted from the second light emitting member passes through the second hole; the holder member has a base portion attached to the device body, a first holding portion extending from the base portion in the pull-out direction and holding the first light emitting member, and a second holding portion extending from the base portion in the pull-out direction and holding the second light emitting member, the first holding portion is adjacent to the first hole when the first storage means is attached to the device body; The second holding portion is adjacent to the second hole when the second storage means is attached to the device body. A sheet storage device comprising:

2. a sensor supported by the holder member for detecting temperature and humidity; The first light emitting member and the second light emitting member are each composed of a light emitting diode.

2. The sheet storage device according to claim 1, wherein the sheet storage device is a storage unit for storing sheets.

3. The sensor is disposed so as not to overlap the first light emitting member and the second light emitting member when viewed in the vertical direction.

3. The sheet storage device according to claim 2, wherein the sheet storage device is a storage unit for storing sheets.

4. A device body, a first storage means that is provided so as to be capable of being pulled out in a pull-out direction relative to the device body and that stores sheets; a second storage means that is provided so as to be withdrawable in a withdrawal direction with respect to the device body, that stores sheets, and that is disposed adjacent to the first storage means in a vertical direction; one holder member supported by the device body; a first light emitting member and a second light emitting member supported by the holder member and configured to emit light; the first storage means includes a first storage section that stores the sheets, and a first cover section that is provided downstream of the first storage section in the pull-out direction and that constitutes a part of an exterior of the sheet storage device, the second storage means includes a second storage section that stores the sheets, and a second cover section that is provided downstream of the second storage section in the pull-out direction and that constitutes a part of an exterior of the sheet storage device, the first cover portion has a first hole formed at a position facing the first light emitting member in the drawing direction so that light emitted from the first light emitting member passes through the first hole; the second cover portion has a second hole formed at a position facing the second light emitting member in the drawing direction so that light emitted from the second light emitting member passes through the second hole; a sensor supported by the holder member for detecting temperature and humidity; The first light emitting member and the second light emitting member are each composed of a light emitting diode. A sheet storage device comprising:

5. The holder member is detachably fixed to the device body by a screw.

5. The sheet storage device according to claim 1, wherein the sheet is conveyed to the storage unit.

6. The device body has a support column extending in a vertical direction, The holder member is attached to the support.

6. The sheet storage device according to claim 1, wherein the sheet storage device is a storage unit that stores sheets.

7. A signal line connected to the first light emitting member is further provided. The holder member holds the signal line.

7. The sheet storage device according to claim 1, wherein the sheet storage device is a storage unit for storing sheets.

8. a support member supported by an exterior surface of the first cover portion with at least a gap therebetween; The support member faces the first hole in the drawing direction.

8. The sheet storage device according to claim 1, wherein the sheet storage device is a storage unit that stores sheets.

9. The support member is a transparent member having a visible light transmittance of 50% or more and 100% or less.

9. The sheet storage device according to claim 8,

10. A pattern is printed on the support member at a position facing the first hole.

10. The sheet storage device according to claim 8 or 9.

11. A sheet storage device according to any one of claims 1 to 10, and an image forming unit that forms an image on the sheet.

1. An image forming apparatus comprising:

Images