JP5239690B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to a copier (PPC), a facsimile, a printer, or a combination of these as a tandem image forming apparatus capable of color printing.

  Conventional color image forming apparatuses generally use toner as a developer of four colors. Therefore, compared to an image forming apparatus dedicated to monochrome, the number of components is increased and the number of discharged sheets per unit time is reduced. Tend. Therefore, a plurality of developing devices are arranged close to a plurality of photoconductors arranged in a row to form a single color toner image, and each toner image is sequentially transferred to color on a recording medium (recording paper). A tandem method for transferring an image is advantageous.

  In a tandem color image forming apparatus, developer storage members (toner bottles) are required as many as the number of colors of toner. Therefore, it is preferable to improve the visibility of the toner bottle in consideration of operability.

  In a conventional image forming apparatus, the operation panel and the toner bottle generally appear well from the front side of the apparatus main body where the user is located, and the toner contained in the four color toner bottles along the paper discharge direction. Are displayed in the same order by the LEDs of the respective colors and the display unit (for example, see Patent Document 1).

Here, when any one of the LEDs is turned on to display the toner end or the toner near end, it can be seen at a glance which toner bottle is in the toner end or toner near end state.
JP 2006-145801 A

  However, in the conventional image forming apparatus, when the toner bottle is mounted on the bottle holder, no consideration is given to displaying that the toner bottle can be mounted at the correct rotational position.

  SUMMARY An advantage of some aspects of the invention is that it provides an image forming apparatus that can easily recognize a mounted state of a toner bottle.

  (1) In the present invention, a single color toner image is formed by each of a plurality of developing units arranged close to a plurality of photoconductors arranged in a row, and each toner image is sequentially transferred to a recording medium to form a color. A tandem type image forming apparatus for forming an image, comprising: a plurality of toner bottles filled with toners of different colors; and a bottle holder that detachably holds the plurality of toner bottles in parallel. In the state where the plurality of toner bottles are correctly attached to the bottle holder, the end surfaces of the gripping portions of the plurality of toner bottles continuously form a predetermined shape.

  With this configuration, the end surfaces of the gripping portions of the plurality of toner bottles continuously form a predetermined shape in a state where the plurality of toner bottles are correctly mounted on the bottle holder. In some cases, the predetermined shape cannot be achieved. In this case, since the predetermined shape is broken, the user can easily visually recognize (determine) the defective mounting of the toner bottle. Therefore, it is expected that the user can perform the mounting operation with peace of mind, and reduce malfunction due to a toner bottle setting error. Furthermore, the present invention preferably has the following configurations (2) to (6).

  (2) According to the present invention, in (1), the end surfaces of the gripping portions of the plurality of toner bottles have a continuous linear shape.

  (3) In the present invention, in (1) or (2), the color of the toner is displayed on an end surface of the toner bottle and in the vicinity of a bottle insertion opening of the bottle holder, and the plurality of the toner bottles are displayed on the bottle holder. The color display of the end face and the vicinity of the bottle insertion opening faces each other with the toner bottle properly mounted.

  (4) In any one of (1) to (3), the present invention has a configuration in which a concave portion is formed on the upper surface of the grip portion.

  (5) In any one of (1) to (4), this invention has the structure which formed the convex part in the lower surface of the said holding part.

  (6) In any one of (1) to (5), the present invention has a configuration in which the gripping portion is resin-molded by removing the meat.

  According to the present invention, a state in which a toner bottle is mounted is obtained by continuously forming a predetermined shape of the end surfaces of the gripping portions of the plurality of toner bottles in a state where the plurality of toner bottles are correctly mounted on the bottle holder. It is possible to provide an image forming apparatus having an effect that the image can be easily visually recognized.

  Hereinafter, a copying machine as an embodiment of an image forming apparatus of the present invention will be described with reference to the drawings.

  A copying machine as an embodiment of the present invention is shown in FIG.

  In FIG. 1, a copying machine 1 is a tandem type full-color image forming apparatus. The copying machine 1 includes a scanner unit 2 as an image reading unit, an operation unit 6 (see FIG. 2) disposed on the front side of the scanner unit 2, a paper discharge unit 3 disposed below the scanner unit 2, The image forming unit 4 is arranged at the lower part of the paper discharge unit 3 and the paper feeding unit 5 as a two-stage paper feeding unit is arranged at the lower part of the image forming unit 4.

  The scanner unit 2 includes a contact glass 2a, a light source 2b, a first mirror member 2c, a second mirror member 2d, a third mirror member 2e, an imaging lens 2f, and an image sensor 2g such as a CCD. The light source 2b and the first mirror member 2c are held by the first traveling body, and the second mirror member 2d and the third mirror member 2e are held by the second traveling body. Such a scanner unit 2 irradiates light on a document placed on the contact glass 2a by a light source 2b, causes reflected light from the document to be folded back by the mirror members 2c to 2e, and converts the reflected light to an imaging lens. The image is formed by 2f and read by the image sensor 2g.

  An upper portion of the scanner unit 2 is a pressure plate (not shown) that presses a document placed on the contact glass 2a, or an automatic that realizes sheet-through-type document reading by automatically conveying the document on the contact glass 2a. A document feeder (ADF) or the like is provided.

  The image forming unit 4 includes four process cartridges 11Y, 11C, 11M, and 11K (hereinafter also simply referred to as process cartridges 11) arranged in parallel in the image forming apparatus main body, and an optical writing device 12 as an optical writing unit. Four toner bottles 13Y, 13C, 13M, and 13K (hereinafter simply referred to as toner bottles 13) arranged in parallel in the image forming apparatus main body as toner storage units that store toners of different colors (yellow, cyan, magenta, and black). 2), an intermediate transfer device 14 as an intermediate transfer device, an intermediate transfer cleaning device 15 as an intermediate transfer cleaning device, and a fixing device 16 as a fixing device.

  Each process cartridge 11 has the same configuration, and a photosensitive drum 17 as a photosensitive member that carries a latent image, a charging device 18 as a charging unit for charging the photosensitive drum 17, and the photosensitive drum 17. A cleaning device 19 serving as a cleaning unit that removes the transfer residual toner above, and a developing device 20 serving as a developing unit that supplies toner to the electrostatic latent image formed on the surface of the photosensitive drum 17 to form an image as a toner image. And have. Each process cartridge 11 forms an image of each color of yellow, cyan, magenta, and black.

  The optical writing device 12 is arranged below the four process cartridges 11 and corresponds to, for example, four laser diode light sources corresponding to each color, an optical system that collimates a laser beam emitted from the light source, a polygon mirror, and a polygon. It comprises a single deflector composed of a motor and an optical system composed of a scanning lens such as an fθ lens disposed on the optical path of each light source, an imaging lens, a correction lens, and a mirror. The optical writing device 12 distributes the laser light beams emitted from four light sources based on image information of each color into four systems by one deflector, performs polarization scanning, and charges the photosensitive drum of each color charged by the charging device 18. Irradiation is made on the surface 17, and electrostatic latent images are written on the four photosensitive drums 17.

  Each toner bottle 13 has the same configuration, and is disposed below the paper discharge unit 3 and filled with toner of each color of yellow, cyan, magenta, and black. These toner bottles 13 are held in a bottle holder 110 (see FIG. 3). Each toner bottle 13 supplies the filled toner of each color to the process cartridge 11 corresponding to each color via a supply path (not shown). The four toner bottles 13 are arranged substantially horizontally.

  The intermediate transfer device 14 is disposed above the process cartridge 11 and includes a primary transfer roller 14a, an intermediate transfer belt 14b, and a secondary transfer roller 14c. The intermediate transfer device 14 primarily transfers a toner image formed on the photosensitive drum 17 onto the rotating intermediate transfer belt 14b by applying a predetermined transfer voltage to the primary transfer roller 14a. Yes. Further, when a predetermined transfer voltage is applied to the secondary transfer roller 14c, the toner image transferred onto the intermediate transfer belt 14b is further transferred onto the recording paper.

  The intermediate transfer cleaning device 15 is disposed on the left side of the intermediate transfer device 14 in FIG. 1 and removes residual toner on the intermediate transfer belt 14b after transfer to the recording paper.

  1, the fixing device 16 is disposed at the upper right portion of the intermediate transfer device 14 and on the right side of each toner bottle 13, and is supported by the fixing roller 16a, the heating roller 16b, the fixing roller 16a, and the heating roller 16b. A belt 16c and a pressure roller 16d that contacts the fixing belt 16c with a predetermined pressure are provided. The fixing device 16 fixes the toner image transferred to the recording paper to the recording paper by heat and pressure.

  In addition, a transport roller 21 and a paper discharge roller 22 are disposed above the fixing device 16 so that the recording paper is transported toward the paper discharge unit 3 and discharged.

  Further, a switching claw 23 for switching the conveyance path at the time of duplex copying and a reverse conveyance roller 24 and a reverse conveyance path 25 for reversing the direction of the recording paper in a switchback manner are arranged above the fixing device 16. Further, in FIG. 1, a double-sided conveyance path 28 in which a first double-sided conveyance roller 26 and a second double-sided conveyance roller 27 are provided on the conveyance path is disposed on the right side surface side of the fixing device 16. The transport path and transport roller reverse the direction of the recording paper temporarily stacked on the reverse transport path 25 by the reverse transport roller 24, and the first double-side transport roller 26 and the second double-side transport roller 27. Thus, the sheet is conveyed on the duplex conveying path 28 and is fed again to a registration roller to be described later.

  Such an image forming unit 4 writes a latent image on the photosensitive drum 17 charged by the charging device 18 by irradiating light from the optical writing device 12, and the photosensitive drum 17 on which the latent image is written. The toner is supplied to the surface by the developing device 20 to be visualized as a toner image, the visualized toner image is transferred to the recording paper by the intermediate transfer device 14, and is transferred by the fixing device 16. Is fixed on a recording sheet to form an image.

  The paper feed unit 5 includes two stages of a first paper feed cassette 5a and a second paper feed cassette 5b in which recording paper is stored, and a first paper feed device 5c and a second paper feed device 5d.

  A first transport roller 30 and a second transport roller 31 are arranged upstream of the first paper feed device 5c and the second paper feed device 5d in the paper feed direction. Further, a registration roller 32 is disposed further upstream in the paper feeding direction of the first transport roller 30 and the second transport roller 31 and in front of the secondary transfer roller 14c.

  Further, the paper feeding unit 5 feeds the recording paper from either the first paper feeding cassette 5a or the second paper feeding cassette 5b by the first paper feeding device 5c or the second paper feeding device 5d, and the first transport roller The paper is fed toward the registration roller 32 via 30 and the second transport roller 31. The registration roller 32 feeds the recording paper fed through the first transport roller 30 and the second transport roller 31 to the secondary transfer roller 14c at a predetermined timing.

  The operation unit 6 includes various input keys for operating various functions of the copier 1 including a start key, a numeric keypad, a function setting key, a reset key, a clear / stop key, and various input information and image formation. And a display unit for displaying the status of the apparatus.

  Next, the appearance of the copying machine 1 is shown in FIG. 2, and a state in which the front side door of the copying machine 1 is removed and the bottle holder is exposed is shown in FIG.

  In FIG. 2, the exterior of the apparatus main body in which the image forming unit 4 and the paper feeding unit 5 are provided is an exterior cover formed by resin molding using plastic, a front opening / closing door 7, a lateral opening / closing door (not shown), or the like. It is composed of members. The front opening / closing door 7 is provided so as to be openable and closable with respect to the exterior cover, so that the toner bottle 13 can be replaced, and the image forming unit 4 can be easily maintained and maintained. Further, the lateral opening / closing door is provided on the right side with respect to the front opening / closing door 7 so as to facilitate operations such as attachment / detachment of a fixing unit, which will be described later, and removal processing when a recording paper jam occurs. In addition, a manual feed tray 9 (see FIG. 1) is provided on the side opening / closing door so as to be opened and closed. Although not shown in FIG. 2, an opening / closing door is provided on the rear side as the exterior so that maintenance and maintenance work of an apparatus necessary for image formation can be easily performed.

  In the present embodiment, when the toner bottle 13 is replaced, the user opens the front opening / closing door 7 to expose the bottle holder 110, grasps the mounted toner bottle 13 to be replaced, rotates it in a predetermined direction, and pulls it out. . Next, an unused toner bottle 13 is inserted from the bottle insertion opening 116 (see FIG. 3) and rotated in a predetermined direction to be in a locked state.

  In FIG. 3, a bottle holder 110 is a member that holds the toner bottle 13 so that the shaft can rotate. Here, it is molded by, for example, polyacetal resin (POM) or acrylonitrile butadiene styrene resin (ABS) having elasticity and impact resistance. The bottle holder 110 also has an opening / closing member (not shown) that opens and closes a bottle insertion opening 116 and a toner discharge opening 107 (see FIG. 4) provided on the peripheral surface of the toner bottle 13, and stops rotation of the toner bottle 13. And a lock portion (not shown).

  Four toner bottles 13Y, 13C, 13M, and 13K are detachably mounted on the bottle holder 110. In FIG. 3, while the toner bottles 13Y, 13M, and 13K are correctly attached (locked), the toner bottle 13C is inserted into the bottle insertion opening 116, but not completely attached (unloaded). Locked).

  Next, the structure of the toner bottle 13 is shown in FIGS. 4 and 5, and the color display of the toner bottle 13 and the bottle holder 110 is shown in FIG. 5A is a view of the toner bottle 13 of FIG. 4 viewed from the A direction, FIG. 5B is a view of the toner bottle 13 of FIG. 4 viewed from the B direction, and FIG. 5C is a view of the toner bottle 13 of FIG. FIG. 4D is a diagram when viewed from the C direction, and FIG. 4D is a diagram when the toner bottle 13 of FIG. 4 is viewed from the D direction.

  4 and 5, the toner bottle 13 is formed by, for example, molding a polyethylene resin as a soft elastic resin into a substantially cylindrical shape, and a toner discharge port 107 is formed on a part of the peripheral surface. In addition, the toner bottle 13 displays a grip portion 101 protruding from one end surface, protrusions 102 and 103 for fitting into a lock portion of the bottle holder 110 and a color of the filled toner. And a projection group 104. The arrangement of the protrusions in the protrusion group 104 is different for each of the four color toners in order to prevent erroneous insertion of the toner bottle 13. Note that the gripping portion 101 is formed by reducing the thickness by removing the thickness.

  The toner color display 101c is printed on the end face of the grip portion 101 (see FIG. 5A). A semicircular concave portion 101a is formed on the upper surface of the grip portion 101 so that the user can easily put the thumb of the hand (see FIG. 5C). A convex portion 101b is formed on the lower surface of the grip portion 101 so that the user can easily place a finger. For example, a large number of rib-shaped protrusions having a substantially triangular cross section extending in the insertion direction of the toner bottle 13 are formed in parallel (see FIG. 5D).

  A toner color display 105 is printed on the end face of the toner bottle 13. In the color display 105, the color name and the pictogram are the same color as the toner (see FIG. 6A). A toner color display (and insertion direction display) 106 is printed on the peripheral surface of the toner bottle 13 on the insertion end side. In the color display (and insertion direction display) 106, the color name, the pictogram, and the arrow are the same color as the toner (see FIG. 6B).

On the other hand, as shown in FIG. 6C, the bottle holder 110 has a bottle insertion opening 116 provided with a guide portion for guiding the insertion of the toner bottle 13. On the periphery (upper part in the drawing) of the bottle insertion opening 116, a toner color display 115 and an attaching / detaching direction display (in the figure, arrows indicating a clockwise direction and a counterclockwise direction) of the toner bottle 13 are printed. . When the toner bottle 13 is correctly attached to the bottle holder 110 and is in the locked state, the color display 105 on the end face of the toner bottle 13 and the color display 115 on the bottle holder 110 face each other.
The toner bottle mounting operation of the copying machine 1 configured as described above will be described.

  First, the user inserts the toner bottle 13 into the bottle insertion opening 116 from one end side (see FIG. 5B) (see FIG. 3). At this time, the toner color display (and insertion direction) 106 printed on the peripheral surface on the insertion end side of the toner bottle 13 and the toner color display 115 at the periphery of the bottle insertion opening 116 are visually recognized. By this visual recognition, it is possible to avoid the color difference and insertion direction difference of the toner bottle 13.

  Next, the user pushes in the toner bottle 13 until it abuts against the rear surface of the bottle holder 110, and, for example, rotates it about 45 degrees clockwise. Here, the protrusions 102 and 103 of the toner bottle 13 and the fitting portion (not shown) of the bottle holder 110 are fitted to be locked. At this time, the user confirms the locked state by the sensation (tactile sense) of the hand holding the toner bottle 13. In addition, a match between the toner color display 105 printed on the end surface of the toner bottle 13 and the toner color display 115 at the periphery of the bottle insertion opening 116 is confirmed (visually recognized). Further, it is confirmed whether or not all the toner bottles 13 are in a locked state by visually checking whether or not the color displays 101c on the end faces of all the toner bottles 13 continuously form a substantially straight line (for example, a horizontal line). To do. For example, it is confirmed whether or not the gripping portion 101 of the currently installed toner bottle 13C is skewed with respect to a straight line formed by the gripping portions 101 of the already-installed toner bottles 13Y, 13M, and 13K.

  When the mounted toner bottle 13 is removed, the user grips the grip portion 101 of the toner bottle 13 and rotates it about 45 degrees counterclockwise, and further pulls it out and removes it from the bottle insertion opening 116. At this time, the user confirms the unlocked state based on the hand feeling (tactile sense) holding the toner bottle 13.

  According to the copying machine 1 as one embodiment of the present invention, when the end surfaces of the grip portions 101 of the four toner bottles 13 form the same rectangle and all the toner bottles 13 are in the locked state, Since the end faces of the gripping portions 101 of all the toner bottles 13 are arranged so as to be continuously seen in a straight line, the user visually recognizes the straight line in addition to the tactile sensation of the fingers during the mounting operation. It can be confirmed that the bottle 13 is correctly mounted (set). Therefore, the user can perform the mounting operation with peace of mind, and can quickly determine whether the toner bottle 13 is set incorrectly.

  In the above-described embodiment, the case has been described in which the end surface of the grip portion 101 protruding from the end surface of the toner bottle 13 is made to appear continuously in a straight line. An auxiliary member for assisting straight line display or an auxiliary display may be performed between 116. In this case, the operability when the toner bottle 13 is attached is further improved.

  For example, as shown in FIG. 7, when auxiliary displays 117a to 117e are printed on the periphery of the bottle insertion opening 116 of the bottle holder 110 and the four toner bottles 13 are in the locked state, the gripping portions 101a of the respective toner bottles are used. The end faces of -101d and the auxiliary displays 117a-117e are made to appear continuously in a straight line. In this case, the thickness (vertical width in the figure) of the auxiliary displays 117a to 117e (hereinafter also simply referred to as 117) is set to be the same as the thickness of the grip portions 101a to 101d. According to the configuration of FIG. 7, the locked state can be easily set by aligning the auxiliary display 117 on both sides of the bottle insertion opening 116 with the end face of the grip portion 101. Moreover, the same effect can be obtained even if the auxiliary displays 117a to 117e are formed in a convex shape having the same height (height from the surface of the bottle holder 110) as the grip portions 101a to 101d in the locked state. It is obtained.

  Further, in the above-described embodiment, the case where the end surface of the gripping portion 101 of the toner bottle 13 is continuously seen as a straight line (horizontal line) (when each gripping portion is horizontal in the locked state) has been described. However, according to the present invention, the same effect can be obtained even if each gripping part has an oblique line (for example, when the toner bottle 13 is inclined with respect to the horizontal line) or a wave shape.

  Or you may make it each grip part become perpendicular | vertical. In this case, since all the gripping portions 101 are parallel to each other in the locked state, the user can quickly recognize a setting error of the toner bottle 13 by the inclination of the gripping portion 101.

  Finally, the operation and effect of the embodiment corresponding to the invention of each claim will be described.

  (1) According to the above-described embodiment and the like, in a state where the four toner bottles 13Y, 13C, 13M, and 13K are correctly attached to the bottle holder 110, the end surfaces of the gripping portions 101 of the respective toner bottles are Since a straight line, a slanted line, a wave shape, etc. are continuously formed as a predetermined shape, the user can easily visually recognize the completion of the toner bottle mounting. In addition, when there is a poorly mounted toner bottle, the predetermined shape collapses (does not hold), so that the user can easily visually recognize the poorly mounted toner bottle.

  In the embodiment described above, for example, the developing device 20 corresponds to a developing unit. For example, recording paper corresponds to a recording medium. For example, the photoconductor drum 17 corresponds to a photoconductor.

  (2) According to the above-described embodiment and the like, the end surfaces of the gripping portions 101 of the four toner bottles 13Y, 13C, 13M, and 13K are continuously formed into a straight line (horizontal line). The user can easily visually check whether the toner bottle 13 is attached or not. In particular, since the collapse (bending) of the straight line is easier to visually recognize than the collapse of the curved line, the operability when the toner bottle is mounted is further improved.

  (3) According to the above-described embodiment and the like, the color display 105 and the bottle insertion opening on the end surface of the toner bottle 13 in a state where the four toner bottles 13Y, 13C, 13M, and 13K are correctly attached to the bottle holder 110. Since the color display 115 in the vicinity of 116 faces each other, not only the mounting failure of the toner bottle 13 but also the color difference of the toner bottle 13 to be replaced depending on whether or not both color displays 105 and 115 are the same color. It can be visually recognized. Therefore, it is possible to avoid a toner bottle setting error.

  (4) According to the above-described embodiment and the like, since the concave portion 101a is formed on the upper surface (front surface) of the grip portion 101 of the toner bottle 13, the narrow space near the bottle insertion opening 116 is coupled with the flat portion following the concave portion 101a. In this case, the grip portion 101 can be easily gripped. Therefore, the operability when the toner bottle is attached is improved.

  (5) According to the above-described embodiment and the like, since the convex portion 101 b is formed on the lower surface (back surface) of the grip portion 101 of the toner bottle 13, the grip portion 101 can be easily held even in a narrow space near the bottle insertion opening 116. Can be gripped. Therefore, the operability when the toner bottle is attached is improved.

  (6) According to the above-described embodiment and the like, since the gripping portion 101 of the toner bottle 13 is resin-molded so as to be hollow by being hollowed out, resin molding is facilitated to increase productivity and resin used for resin molding Expected to save quantity.

1 is a cross-sectional view showing a schematic configuration of a copying machine as an embodiment of the present invention. FIG. 2 is a perspective view showing an appearance of the copying machine of FIG. 1. FIG. 2 is a perspective view illustrating a mounted state (unlocked state) of the toner bottle of FIG. 1. FIG. 2 is a plan view of the toner bottle of FIG. 1. FIG. 5 is a view of the toner bottle of FIG. 4 viewed from another direction. FIG. 2 is a perspective view illustrating a mounted state (locked state) of the toner bottle of FIG. 1. It is a figure explaining the bottle holder as other embodiment of this invention.

Explanation of symbols

1 Copying machine (image forming device)
2 Scanner unit (image reading unit)
4 Image forming unit 11, 11Y, 11C, 11M, 11K Process cartridge 12 Optical writing device 13, 13Y, 13C, 13M, 13K Toner bottle 14 Intermediate transfer device 15 Intermediate transfer cleaning device 16 Fixing device 17 Photosensitive drum (photosensitive drum) )
18 Charging Device 19 Cleaning Device 20 Developing Device (Developing Unit)
101 Grasping part 101a Concave part 101b Convex part 101c Color display 102 Protrusion part 103 Protrusion part 104 Protrusion group 105 Color display 106 Color display (and insertion direction display)
107 Toner discharge port 110 Bottle holder 115 Color display and attaching / detaching direction 116 Bottle insertion port 117a to 117e Auxiliary display

Claims (6)

A tandem system in which a single color toner image is formed by each of a plurality of developing units arranged close to a plurality of photoconductors arranged in a row, and each toner image is sequentially transferred to a recording medium to form a color image. An image forming apparatus,
A plurality of toner bottles filled with toners of different colors, and a bottle holder that detachably holds the plurality of toner bottles in parallel,
Between the bottle insertion openings of the adjacent bottle holders, a display portion having the same thickness as the thickness of the grip portion of the toner bottle is provided,
An end face of a grip portion of the plurality of toner bottles and the display portion continuously form a linear shape in a state where the plurality of toner bottles are correctly attached to the bottle holder. Image forming apparatus. The image forming apparatus according to claim 1 which is the end face of the grip portion of the front Quito Nabotoru wherein the color display indicating the color of the toner filled in the toner bottle is provided.   The toner color is displayed on the end surface of the toner bottle and in the vicinity of the bottle insertion port of the bottle holder, and the end surface and the bottle insertion port are displayed in a state where the plurality of toner bottles are correctly attached to the bottle holder. The image forming apparatus according to claim 1, wherein the color display is opposed to the vicinity of the image forming apparatus.   The image forming apparatus according to claim 1, wherein a concave portion is formed on an upper surface of the grip portion.   The image forming apparatus according to claim 1, wherein a convex portion is formed on a lower surface of the grip portion.   The image forming apparatus according to claim 1, wherein the grip portion is resin-molded by removing a meat.

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