JP2016215596A - Image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming apparatus which facilitates safe attachment of a memory and which reliably removes static electricity.SOLUTION: An image forming apparatus includes: a printer body 2 (apparatus body) that is internally provided with a control board 22; a memory storage part 24 that is connected to the control board 22 and configured so that a memory can be attached/detached from the outside of the printer body 2; a memory cover 21 that constitutes a part of an outer surface of the printer body 2 and covers the memory storage part 24; and a grounding member 25 that is provided in close vicinity to a handle part 28 of the memory cover 21.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an image forming apparatus capable of safely adding a memory.

  2. Description of the Related Art Conventionally, an image forming apparatus such as a copying machine or a printer includes a control board on which a CPU, a memory, and various electronic circuits are mounted in order to control image forming processing and other processing. Some image forming apparatuses are configured such that a memory such as a DIMM can be attached to and detached from such a control board.

  However, when a user with static electricity contacts or approaches a control board or a connection terminal of the memory when the memory is mounted, the built-in memory or electronic circuit mounted on the control board may be destroyed by the static electricity. . Therefore, an image forming apparatus is required to have a configuration in which a memory can be mounted without being affected by static electricity. For example, in an image forming apparatus, a user removes a sheet metal cover attached to a shield sheet metal covering a control board or a memory, and a user operates a hand tightening screw for a cover covering the memory. There is a way to remove static electricity.

  Further, in the image forming apparatus disclosed in Patent Document 1, the memory card stored in the memory card storage unit is attached to the sheet metal scanner cover that is the bottom of the memory card storage unit and is electrically connected to the ground of the apparatus body. It is configured such that one surface of the memory card housing is always in contact, and the static electricity due to charging of the memory card itself is released to the sheet metal scanner cover side.

JP 2013-186169 A

  However, in the image forming apparatus as described above, since it is necessary to provide a shield metal plate, the number of parts increases and the cost increases. Also, it is necessary to remove the shield metal plate cover when the memory is attached / detached. Work burden. In addition, in the image forming apparatus as disclosed in Patent Document 1, it is necessary to attach / detach the outer cover and the resin cover when attaching / detaching the memory card, which increases the work load for the user.

  In view of the above, the present invention has an object to facilitate the safe mounting of a memory and to reliably remove static electricity.

  An image forming apparatus according to the present invention includes an apparatus main body provided with a control board therein, a memory accommodating portion connected to the control board and configured to be detachable from the outside of the apparatus main body, A memory cover that forms a part of the outer surface and covers the memory housing portion; and a grounding member that is provided in the vicinity of a handle portion of the memory cover.

  By adopting such a configuration, the user who adds the memory of the image forming apparatus can add the memory by a simple operation of operating the handle portion of the memory cover, and without being aware of static electricity. Can be removed. Therefore, it is possible to facilitate the safe mounting of the memory and to reliably remove static electricity. Moreover, since it is not necessary to provide a shield sheet metal, it becomes possible to reduce cost.

  The device body includes a back cover that can be opened and closed on a back surface thereof, the memory cover is formed to extend from a side surface of the device body to the back surface, and the handle portion is disposed behind the memory cover. It is good to be formed in an end, and to be covered by the back cover when the back cover is in a closed state and exposed when the back cover is in an open state.

  By adopting such a configuration, the opening and closing of the memory cover can be regulated with a simple configuration using the back cover.

  In addition, the memory cover may have a locking portion that is locked to the closed back cover at a rear end.

  By adopting such a configuration, when the back cover is closed, the opening of the memory cover can be reliably regulated.

  In addition, the memory cover has an engaging portion that is engaged with and attached to the apparatus main body at a front end, and the memory cover has a closed state that covers the memory accommodating portion with the engaging portion as an axis, and You may comprise so that rotation between the open states which expose a memory accommodating part is possible.

  By adopting such a configuration, the memory cover can cover the memory accommodating portion with a simple configuration.

  The memory cover may include a rotation restricting portion that restricts rotation in the opening direction.

  Further, the memory cover may include a sliding restricting portion that restricts backward sliding.

  By adopting such a configuration, it is possible to reliably maintain the state in which the memory housing portion is covered with the memory cover, and it is possible to reliably protect the additional memory and the control board.

  Further, the grounding member may be formed to have a concave portion that is recessed in a direction away from the handle portion in the vicinity of the handle portion.

  By adopting such a configuration, it is possible to improve user operability.

  According to the present invention, it is possible to facilitate the safe mounting of a memory and to reliably remove static electricity.

1 is a schematic diagram illustrating an outline of a printer according to an embodiment of the present invention. It is a perspective view from the front side showing a printer concerning one embodiment of the present invention. 1 is a rear perspective view showing a printer according to an embodiment of the present invention. It is sectional drawing from the upper side which shows the control board in the printer which concerns on one Embodiment of this invention, and its periphery. In the printer which concerns on one Embodiment of this invention, it is a perspective view from the back which shows the memory cover and its periphery when a back cover is a closed state. FIG. 5 is a side perspective view showing the memory cover and its periphery when the back cover is closed in the printer according to the embodiment of the present invention. In the printer which concerns on one Embodiment of this invention, it is a perspective view from the back which shows the memory cover and its periphery when a back cover is an open state. In the printer which concerns on one Embodiment of this invention, it is a perspective view from the back which shows a memory accommodating part and its periphery when a back cover is an open state and a memory cover is removed. In the printer which concerns on one Embodiment of this invention, it is a perspective view from the side which shows the memory accommodating part and its periphery when a back cover is an open state and a memory cover is removed. It is sectional drawing from the upper side which shows the memory cover and grounding member in the printer which concerns on other embodiment of this invention.

  First, the overall configuration of the printer 1 (image forming apparatus) will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating an outline of a printer according to an embodiment of the present invention, FIG. 2 is a perspective view from the front side illustrating a printer according to an embodiment of the present invention, and FIG. It is a perspective view from the rear side which shows the printer which concerns on one Embodiment of invention. Hereinafter, the right side in FIG. 1 is the front side (front side) of the printer 1. An arrow Fr attached to each figure indicates the front side (front side) of the printer 1.

  As shown in FIG. 1, the printer 1 includes a box-shaped printer main body 2 (apparatus main body), and a paper feed cassette 3 for storing paper (recording medium) is provided below the printer main body 2. A paper discharge tray 4 is provided at the top of the printer main body 2.

  An exposure unit 5 composed of a laser scanning unit (LSU) is disposed at the front of the printer main body 2, and an image forming unit 6 is provided at the rear of the printer main body 2. The image forming unit 6 is rotatably provided with a photosensitive drum 7 (image carrier). Around the photosensitive drum 7, a charger 8 and a developing device 11 connected to a toner container 10 are provided. The transfer roller 12 and the cleaning device 13 are arranged along the rotation direction of the photosensitive drum 7 (see arrow X in FIG. 1).

  A paper transport path 14 is provided at the rear part of the printer main body 2 from below to above. A paper feed unit 15 is provided at the upstream end of the conveyance path 14, and a transfer unit 16 including the photosensitive drum 7 and the transfer roller 12 is provided at a middle portion of the conveyance path 14, and a downstream part of the conveyance path 14. Is provided with a fixing device 17. A reverse path 18 for duplex printing is provided on the rear side of the transport path 14.

  Further, as shown in FIG. 3, a back cover 20 is attached to the back side of the printer body 2 so as to be openable and closable, and a memory cover 21 is attached to the right side (left side of the paper) of the back cover 20 so as to be openable and closable. Yes. The memory cover 21 is arranged so that the left edge thereof is along the right edge of the back cover 20.

  Next, an image forming operation of the printer 1 having such a configuration will be described.

  When image data is input from a computer or the like connected to the printer 1 and an instruction to start printing is given, an image forming operation is executed as follows.

  First, after the surface of the photosensitive drum 7 is charged by the charger 8, exposure corresponding to image data is performed on the photosensitive drum 7 by laser light from the exposure device 5 (see arrow P in FIG. 1). Then, an electrostatic latent image is formed on the surface of the photosensitive drum 7. Next, the developing device 11 develops the electrostatic latent image into a toner image with the toner supplied from the toner container 10.

  On the other hand, the sheet taken out from the sheet cassette 3 by the sheet feeding unit 15 is conveyed to the transfer unit 16 in synchronization with the above-described image forming operation, and the toner image on the photosensitive drum 7 is transferred to the sheet by the transfer unit 16. Is transferred to. The sheet on which the toner image has been transferred is conveyed downstream in the conveyance path 14 and enters the fixing device 17 where the toner image is fixed on the sheet. The sheet on which the toner image is fixed is discharged from the downstream end of the transport path 14 to the discharge tray 4. The toner remaining on the photosensitive drum 7 is collected by the cleaning device 13.

  Next, the configuration of the control board 22 of the printer 1 and its surroundings will be described with reference to FIGS. 4 is a cross-sectional view from above showing the control board 22 and its periphery, and FIG. 5 is a rear perspective view showing the memory cover 21 and its periphery when the back cover 20 is closed. 6 is a side perspective view showing the memory cover 21 and its periphery when the back cover 20 is closed, and FIG. 7 shows the memory cover 21 and its periphery when the back cover 20 is open. It is a perspective view from back. FIG. 8 is a rear perspective view showing the memory accommodating portion 24 and its periphery, which will be described later, when the back cover 20 is in the open state and the memory cover 21 is removed, and FIG. FIG. 4 is a side perspective view showing a memory accommodating portion 24 and its periphery, which will be described later, when the memory cover 21 is removed in a state.

  As shown in FIG. 4, a control board 22 is provided in the right rear part in the printer main body 2 to control image forming processing and other processes. The control board 22 includes a CPU, a memory, and various types of controls. An electronic circuit is implemented. In addition, a memory socket 23 is connected to the control board 22, and the memory socket 23 is configured such that an expansion memory such as a DIMM can be detached from the right side.

  On the right side of the control board 22, a memory accommodating portion 24 that opens toward the outside (right side) is formed in the right rear portion of the printer main body 2. The memory socket 23 described above is provided in the memory accommodating portion 24, and the memory cover 21 described above is attached to the printer main body 2 so as to cover the memory accommodating portion 24. That is, the user can attach and detach the expansion memory to the memory socket 23 from the right side (outside) through the memory accommodating portion 24 by opening the memory cover 21.

  Further, a grounding member 25 is provided in the vicinity of the rear end portion of the memory cover 21 behind the control board 22.

  Next, the memory cover 21 will be described. The memory cover 21 has a long shape in the front-rear direction and is configured to constitute a part of the outer surface on the right rear side of the printer main body 2. The memory cover 21 extends rearward from the side surface (right side surface) of the printer main body 2 and is on the left side. And is formed to extend to the back surface.

  The memory cover 21 has an engaging portion 26 at the front end, and the engaging portion 26 is attached to the printer main body 2 by engaging with an engaged portion 27 provided in the printer main body 2 on the front side of the memory accommodating portion 24. It is done. For example, the engaging portion 26 is formed to project from the front end of the memory cover 21 in an L-shaped cross section, and the engaged portion 27 is formed to open in the front-rear direction. Then, the memory cover 21 is rotatable between the closed state that covers the memory housing portion 24 and the open state that exposes the memory housing portion 24 with the engaging portion 26 as an axis. At this time, the engaging portion 26 is configured as a hinge that can be attached to and detached from the printer main body 2 (can be attached and detached).

  The memory cover 21 has a handle portion 28 at the left end (rear end), and the handle portion 28 is formed with a slope on the inner side (front side) on which a user's finger is applied. That is, the handle portion 28 is covered by the back cover 20 when the back cover 20 is closed, and is exposed when the back cover 20 is open. The memory cover 21 has a locking portion 30 protruding leftward above the handle portion 28 at the rear end, and the locking portion 30 is locked to the closed back cover 20 from the rear.

  The memory cover 21 has a hook-shaped rotation restricting portion 31 inside the rear portion, and the rotation restricting portion 31 is formed on the back surface of the printer main body 2 with the memory cover 21 mounted on the printer main body 2. The first receiving portion 32 is locked. Further, when the user operates the handle portion 28 of the memory cover 21, for example, by pulling the handle portion 28 rearward, the locking of the rotation restricting portion 31 and the first receiving portion 32 is released. For example, the rotation restricting portion 31 is formed to project inward (front side) and have a corner perpendicular to the right front side, and the first receiving portion 32 is formed in a U shape having a bottom portion on the right side. As described above, when the rotation restricting portion 31 is locked to the first receiving portion 32, the memory cover 21 in the mounted state is restricted from turning to the right (opening direction).

  The memory cover 21 has a sliding restricting portion 33 inside the side portion, and the sliding restricting portion 33 is a second formed on the right surface of the printer main body 2 in a state where the memory cover 21 is attached to the printer main body 2. Locked to the receiving portion 34. Further, when the memory cover 21 is rotated to the right side, the engagement between the sliding restriction portion 33 and the second receiving portion 34 is released. For example, the rotation restricting portion 33 is formed in a columnar shape protruding inward (left side), and the first receiving portion 34 has a cylindrical shape protruding on the right side so that the sliding restricting portion 33 can be fitted therein. It is formed. In this manner, the sliding restriction portion 33 is locked to the second receiving portion 34, whereby the memory cover 21 in the mounted state is restricted from sliding backward.

  Next, the ground member 25 will be described. The ground member 25 is formed in a sheet metal shape extending in the up-down direction and the left-right direction, and is connected to a ground wire or the like and grounded. The grounding member 25 is fastened to the printer main body 2 with a screw 35 or the like in the vicinity immediately behind the handle portion 28 of the memory cover 21 in the mounted state, and the distance between the grounding member 25 and the handle portion 28 is determined by the fingertip of the user. Is arranged so as to be at an interval of touching the grounding member 25 at the same time as the handle portion 28 is touched, for example, 2 to 3 mm. The grounding member 25 is arranged so as to extend downward from the center in the vertical direction of the memory cover 21 in the mounted state, and extends in the left-right direction with the left end (rear end) of the memory cover 21 in the mounted state as a center. Are arranged as follows.

  According to the present embodiment, as described above, the printer 1 is connected to the printer main body 2 (device main body) having the control board 22 inside, and the control board 22, and the memory is detached from the outside of the printer main body 2. A memory housing portion 24 that can be configured, a memory cover 21 that forms a part of the outer surface of the printer main body 2 and covers the memory housing portion 24, and a grounding member that is provided close to the handle portion 28 of the memory cover 21 25.

  As a result, a user who increases the memory of the printer 1 can increase the memory by a simple operation of operating the handle portion 28 of the memory cover 21 and can remove static electricity without being aware of it. . Therefore, it is possible to facilitate the safe mounting of the memory and to reliably remove static electricity. Moreover, since it is not necessary to provide a shield sheet metal, it becomes possible to reduce cost.

  In addition, according to the present embodiment, the printer body 2 includes the back cover 20 that can be opened and closed on the back surface thereof, and the memory cover 21 is formed so as to extend from the side surface of the printer body 2 to the back surface. 28 is formed at the rear end of the memory cover 21, and is covered by the back cover 20 when the back cover 20 is closed, and is exposed when the back cover 20 is open. Thereby, opening and closing of the memory cover 20 can be regulated with a simple configuration using the back cover 20.

  Furthermore, according to the present embodiment, the memory cover 21 has the locking portion 30 that is locked to the closed back cover 20 at the rear end. Thereby, when the back cover 20 is in the closed state, the opening of the memory cover 21 can be reliably regulated.

  Further, according to the present embodiment, the memory cover 21 has the engaging portion 26 that is engaged with and attached to the printer main body 2 at the front end, and the memory cover 21 has a memory accommodating portion with the engaging portion 26 as an axis. It is possible to rotate between a closed state that covers the portion 24 and an open state that exposes the memory housing portion 24. Thereby, the memory cover 21 can cover the memory accommodating portion 24 with a simple configuration.

  Furthermore, according to the present embodiment, the memory cover 21 includes the rotation restricting unit 31 that restricts the rightward (opening) rotation. Further, according to the present embodiment, the memory cover 21 includes the sliding restriction portion 33 that restricts backward sliding. As a result, the state in which the memory accommodating portion 24 is covered with the memory cover 21 can be reliably maintained, and the additional memory and the control board 22 can be reliably protected.

  In the present embodiment, the grounding member 25 is formed in a sheet metal shape extending in the up-down direction and the left-right direction, and the handle portion 28 of the memory cover 21 is formed with an inclined surface on which the user's finger hangs on the inside (front side). However, the present invention is not limited to this configuration. For example, in another embodiment, as shown in FIG. 10, the grounding member 25 may be formed with a recess 36 that is recessed in the direction away from the handle portion 28 (forward) in the vicinity of the handle portion 28. . As a result, the operability for the user can be improved. The handle portion 28 may have a slope. However, if the distance between the grounding member 25 and the handle portion 28 is a sufficient interval for the user's fingertip to enter, the handle portion 28 is configured without the slope. Also good.

  In the present embodiment, the configuration in which the ground member 25 is provided in the vicinity of the handle portion 28 of the memory cover 21 in order to suppress an increase in cost has been described. However, the present invention is not limited to this configuration. For example, in another embodiment, the grounding member 25 may be provided over the entire area of the left end of the memory cover 21.

  Further, in the present embodiment, the configuration in which the engaging portion 26 of the memory cover 21 is a hinge that can be attached to and detached from the printer main body 2 has been described. However, the present invention is not limited to this configuration. For example, in another embodiment, the engaging portion 26 may be configured to be pivotally supported via the rotation shaft with respect to the engaged portion 27 of the printer main body 2.

  In the present embodiment, the control board 22 is provided at the right rear portion of the printer main body 2, and accordingly, the memory housing portion 24, the memory cover 21, and the grounding member 25 are also provided at the right rear portion of the printer main body 2. Although described, it is not limited to this configuration. For example, in another embodiment, the control board 22 is provided on the left rear portion, the right front portion, or the left front portion of the printer main body 2, and accordingly, the memory accommodating portion 24, the memory cover 21, and the grounding member 25 are also included in the printer main body 2. You may comprise so that it may be provided in a left rear part, a right front part, or a left front part.

  In this embodiment, the case where the configuration of the present invention is applied to the printer 1 has been described. However, in another different embodiment, the configuration of the present invention is applied to other image forming apparatuses such as a copying machine, a facsimile machine, and a multifunction machine. It is also possible.

1 Printer (image forming device)
2 Printer Main Body 20 Back Cover 21 Memory Cover 22 Control Board 23 Memory Socket 24 Memory Housing 25 Grounding Member 26 Engaging Part 27 Engaged Part 28 Handle Part 30 Locking Part 31 Rotation Restricting Part 32 First Receiving Part 33 Sliding Movement restricting portion 34 Second receiving portion 36 Recessed portion

Claims (7)

An apparatus main body provided with a control board inside;
A memory housing portion connected to the control board and configured to be detachable from the outside of the apparatus main body;
A memory cover that forms a part of the outer surface of the apparatus main body and covers the memory housing;
An image forming apparatus comprising: a grounding member provided in proximity to a handle portion of the memory cover. The apparatus body includes a back cover that can be opened and closed on the back surface thereof,
The memory cover is formed to extend from the side surface of the device main body to the back surface,
The handle is formed at a rear end of the memory cover, covered by the back cover when the back cover is closed, and exposed when the back cover is open. The image forming apparatus according to 1.   The image forming apparatus according to claim 2, wherein the memory cover includes a locking portion that is locked to the closed back cover at a rear end.   The memory cover has an engaging portion that is engaged with and attached to the apparatus main body at a front end, and the memory cover is closed and covers the memory accommodating portion with the engaging portion as an axis. The image forming apparatus according to any one of claims 1 to 3, wherein the image forming apparatus is rotatable between an open state in which the portion is exposed.   The image forming apparatus according to claim 4, wherein the memory cover includes a rotation restricting portion that restricts rotation in the opening direction.   The image forming apparatus according to claim 1, wherein the memory cover includes a slide restricting portion that restricts backward sliding.   The image according to any one of claims 1 to 6, wherein the grounding member is formed with a concave portion recessed in a direction away from the handle portion in the vicinity of the handle portion. Forming equipment.

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