JP6037163B2 - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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JP6037163B2
JP6037163B2 JP2012253697A JP2012253697A JP6037163B2 JP 6037163 B2 JP6037163 B2 JP 6037163B2 JP 2012253697 A JP2012253697 A JP 2012253697A JP 2012253697 A JP2012253697 A JP 2012253697A JP 6037163 B2 JP6037163 B2 JP 6037163B2
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image forming
forming apparatus
main body
electrical
apparatus main
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JP2014102350A (en
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島 信広
信広 島
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Ricoh Co Ltd
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Ricoh Co Ltd
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Description

本発明は画像形成装置に関し、詳細にはそのメンテナンスや故障原因特定について考慮した画像形成装置に関する。   The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus that considers maintenance and failure cause identification.

画像形成装置のシャシーに一端を回動可能に取り付けたブラケットに、複数枚の電装基板を取り付け、これら電装基板の組立性やメンテナンス性を向上させる技術が知られている。   A technique is known in which a plurality of electrical boards are attached to a bracket whose one end is rotatably attached to a chassis of an image forming apparatus, and the assembly and maintenance of these electrical boards are improved.

例えば特許文献1には、省スペース性及びメンテナンス性を向上させる目的で、2つの回路基板同士を、電気絶縁性を有する支持板の表裏面に、各基板の半田面がそれらの支持板を介して互いに向き合う状態で取り付けて配置し、また、支持板を、所定の支持フレームに対して回動可能に取り付けるようにした構成が開示されている。   For example, in Patent Document 1, for the purpose of improving space saving and maintainability, two circuit boards are placed on the front and back surfaces of a support plate having electrical insulation, and the solder surface of each substrate is interposed between the support plates. And a configuration in which the support plate is rotatably attached to a predetermined support frame.

しかしながら、従来の電装基板を回動させ、メンテナンス性を向上させる構成の画像形成装置では、電装基板を回動させた状態で画像形成等の動作させることができなかった。また動作させることはできても、電装基板の実装面側がむき出しとなっており、それに作業者等が接触して感電してしまうことがあり得るという問題があった。   However, the conventional image forming apparatus configured to rotate the electrical board to improve maintainability cannot perform image formation or the like operation with the electrical board rotated. In addition, even though it can be operated, there is a problem that the mounting surface side of the electrical board is exposed, and an operator or the like may come into contact with it to get an electric shock.

本発明は、上述の問題点にかんがみ、電装基板のメンテナンスを行う際、接触による感電等の問題をなくして安全にメンテナンスを行え、故障原因の特定もしやすく、狭い場所でのメンテナンス性も向上させ得る画像形成装置を提供することを目的とする。   In view of the above-mentioned problems, the present invention eliminates problems such as electric shock due to contact when performing maintenance on an electrical board, can be safely maintained, easily identifies the cause of failure, and improves maintainability in narrow places. An object of the present invention is to provide an obtained image forming apparatus.

本発明の画像形成装置は、少なくとも1つの電装基板を保持するとともに、画像形成装置本体の保持面に対して移動可能に取り付け得る電装基板保持手段と、移動させた該電装基板保持手段を前記画像形成装置本体の保持面に支持する際に、保持した前記電装基板の実装面側を前記画像形成装置本体の内側に向けるとともに移動前に前記電装基板保持手段が覆っていた部位を空けた状態で支持する支持手段とを備え、前記電装基板保持手段を前記画像形成装置本体に固定した際及び移動させて固定した際のいずれでも、前記電装基板保持手段を前記画像形成装置本体の保持面の投影面の内側におさめる構成とし、前記電装基板保持手段の移動が前記画像形成装置本体の保持面の上下方向での回動である、ことを特徴とする。
The image forming apparatus of the present invention holds at least one electrical board, and can be movably attached to the holding surface of the main body of the image forming apparatus, and the moved electrical board holding means is the image. When supporting the holding surface of the forming apparatus main body, the mounting surface side of the held electric component substrate is directed to the inside of the image forming apparatus main body and the portion covered by the electric component substrate holding means before moving is opened. A support means for supporting, and the electric substrate holding means is projected onto the holding surface of the image forming apparatus main body, both when the electric substrate holding means is fixed to the image forming apparatus main body and when the electric substrate holding means is moved and fixed. The electric circuit board holding means is moved in the vertical direction of the holding surface of the main body of the image forming apparatus .

本発明によれば、電装基板を回動させても安全に画像形成装置のメンテナンスを行え、故障原因の特定がしやすく、狭い場所でのメンテナンス性も向上させることができる。   According to the present invention, the image forming apparatus can be maintained safely even if the electrical board is rotated, the cause of the failure can be easily identified, and the maintainability in a narrow place can be improved.

本発明に係る画像形成装置の一実施形態の全体構成について説明するための背面側の斜視図(カバーを取り付けた状態)1 is a rear perspective view for explaining an overall configuration of an embodiment of an image forming apparatus according to the present invention (with a cover attached); FIG. 本発明に係る画像形成装置の一実施形態の全体構成について説明するための背面側の斜視図(カバーを取り外した状態)1 is a rear perspective view for explaining an overall configuration of an embodiment of an image forming apparatus according to the present invention (with a cover removed); 図2に示した高圧基板ブラケットを示す拡大斜視図FIG. 2 is an enlarged perspective view showing the high-voltage board bracket shown in FIG. 本発明に係る画像形成装置の一実施形態の全体構成について説明するための背面側の斜視図(高圧基板ブラケットを上げた状態)1 is a rear perspective view for explaining an overall configuration of an embodiment of an image forming apparatus according to the present invention (in a state where a high-voltage board bracket is raised); 高圧基板ブラケットを上げて保持した状態を示す拡大斜視図An enlarged perspective view showing a state where the high-voltage board bracket is raised and held.

本発明の実施の形態を図面を参照して以下に説明する。
本発明に係る画像形成装置の実施形態においては、例えばメンテナンスや故障原因特定の際、それらの作業には不要な電装基板に触れられないようにする。具体的には、メンテナンスや故障原因特定には不要な電装基板を、電装基板を保持する保持手段となる基板ブラケットで覆い、電装基板の実装面側を装置本体内側に向けた状態にできるようにする保持形状部を支持手段として用いて取り付ける。基板ブラケットは画像形成装置の装置本体背面の投影面積の内側におさめる。詳細には、基板ブラケットを、ハーネス類を外すことなく回動させて移動可能に構成し、基板ブラケットを、画像形成装置の装置本体の投影面積内で取り付け、固定する。
Embodiments of the present invention will be described below with reference to the drawings.
In the embodiment of the image forming apparatus according to the present invention, for example, when maintenance or failure cause identification is performed, an electrical board that is not necessary for such work is prevented from being touched. Specifically, an electrical board that is unnecessary for maintenance and failure cause identification is covered with a board bracket that serves as a holding means for holding the electrical board, so that the mounting surface side of the electrical board faces the inside of the device body. The holding shape portion to be attached is used as a support means. The substrate bracket is placed inside the projected area on the back of the main body of the image forming apparatus. Specifically, the substrate bracket is configured to be movable by being rotated without removing the harnesses, and the substrate bracket is attached and fixed within the projection area of the apparatus main body of the image forming apparatus.

図1、図2は、本発明に係る画像形成装置の一実施形態の全体構成について説明するための背面側の斜視図である。図1は、画像形成装置の装置本体背面を覆うカバーを取り付けた状態を示す。図2は、カバーを取り外した状態を示す。   1 and 2 are perspective views of the back side for explaining the overall configuration of an embodiment of an image forming apparatus according to the present invention. FIG. 1 shows a state in which a cover that covers the back of the main body of the image forming apparatus is attached. FIG. 2 shows a state where the cover is removed.

画像形成装置の装置本体背面は、メンテナンス性を向上させるため、分割された後上右カバー1、電装ボックスカバー2、後下カバー3を取り付けて覆ってある。各カバーは単独で取り外すことができる構造となっている。そして、図2からわかるように、後上右カバー1を取り外すことで冷却用ファンモータ4関連のメンテナンスができる。また、電装ボックスカバー2を外すことで電装ボックス5内に設置されている本体制御基板5a〜5cをメンテナンスできる。さらに、後下カバー3を外すことで高圧基板ブラケット6に取り付けられた高圧制御基板7、高圧電源基板8のメンテナンスができる。   The rear surface of the main body of the image forming apparatus is covered with a divided rear upper right cover 1, electrical box cover 2, and rear lower cover 3 in order to improve maintainability. Each cover has a structure that can be removed independently. As can be seen from FIG. 2, the cooling fan motor 4 can be maintained by removing the rear upper right cover 1. Moreover, the main body control boards 5a to 5c installed in the electrical box 5 can be maintained by removing the electrical box cover 2. Further, by removing the rear lower cover 3, the high voltage control board 7 and the high voltage power supply board 8 attached to the high voltage board bracket 6 can be maintained.

通常、高圧電源基板8は画像形成装置の動作時に熱を発生させる。そのため、画像形成装置の装置本体内側に配置すると放熱効率が悪くなるので、装置本体の外側に配置する。したがって、高圧基板ブラケット6の内側には駆動ユニットや本体制御基板が配置されることが多い(図4を参照して後述する)。そのため、駆動ユニットや、高圧基板ブラケット6の内側にある本体制御基板をメンテナンスする際には、高圧基板ブラケット6を取り外さなければならない。ところが、高圧基板ブラケット6に取り付けられていた高圧制御基板7や高圧電源基板8を取り外してしまうと、画像形成装置の電源を入れることができなくなり、駆動ユニット等の動作時に発生する不具合等の発見が困難になる。また、画像形成装置への通電に必要なハーネスのみを接続した状態で前記基板類を取り外した場合は、不安定な状態で高圧基板ブラケット6を保持することとなり、通電時に作業者が不用意に高圧電源基板8に接触して感電する可能性があり危険である。   Usually, the high-voltage power supply substrate 8 generates heat during the operation of the image forming apparatus. For this reason, if the heat radiation efficiency is deteriorated when the image forming apparatus is disposed inside the apparatus main body, the image forming apparatus is disposed outside the apparatus main body. Therefore, a drive unit and a main body control board are often arranged inside the high-voltage board bracket 6 (described later with reference to FIG. 4). Therefore, when maintaining the drive unit or the main body control board inside the high voltage board bracket 6, the high voltage board bracket 6 must be removed. However, if the high-voltage control board 7 or the high-voltage power supply board 8 attached to the high-voltage board bracket 6 is removed, the power of the image forming apparatus cannot be turned on, and a problem that occurs during operation of the drive unit or the like is discovered. Becomes difficult. Further, when the substrates are removed while only the harness necessary for energizing the image forming apparatus is connected, the high-voltage substrate bracket 6 is held in an unstable state, so that an operator is careless during energization. There is a possibility that an electric shock may occur due to contact with the high-voltage power supply substrate 8, which is dangerous.

図3は、高圧基板ブラケット6について説明するための拡大斜視図である。
高圧基板ブラケット6は、詳細な図示は省略するが、装置本体の構成部材に図中上下方向で回動可能にあるいは装置本体の構成部材から取り外し可能に取り付けてある。また高圧基板ブラケット6の上面には、メンテナンス時に装置本体の構成部材(図示の例では電装ボックス5を構成する部材)に引っ掛けて固定できるようにするための保持形状部9が設けてある。保持形状部9は高圧基板ブラケット6の両側面側に寄せて設けてあり、これらの保持形状部9の傍らには、高圧制御基板7や高圧電源基板8に接続するためのハーネス10aを保持するハーネス保持部材10が取り付けてある。ハーネス10aは、各基板上に設けたコネクタに接続してあるが詳細な図示は省略する。
FIG. 3 is an enlarged perspective view for explaining the high-voltage board bracket 6.
Although not shown in detail, the high-voltage board bracket 6 is attached to the constituent members of the apparatus main body so as to be rotatable in the vertical direction in the drawing or to be removable from the constituent members of the apparatus main body. On the upper surface of the high-voltage board bracket 6, a holding shape portion 9 is provided so that it can be fixed by being hooked on a component of the apparatus main body (a member constituting the electrical box 5 in the illustrated example) during maintenance. The holding shape portions 9 are provided close to both side surfaces of the high-voltage board bracket 6, and a harness 10 a for connecting to the high-voltage control board 7 and the high-voltage power supply board 8 is held beside these holding shape parts 9. A harness holding member 10 is attached. Although the harness 10a is connected to the connector provided on each board | substrate, detailed illustration is abbreviate | omitted.

図4、5は、高圧基板ブラケット6の移動について説明するための斜視図である。図4は高圧基板ブラケット6を上げ、移動前に高圧基板ブラケット6が覆っていた部位を空けた状態でメンテナンスを行えるようにした状態の斜視図、図5は高圧基板ブラケット6の保持状態を示すための拡大斜視図である。   4 and 5 are perspective views for explaining the movement of the high-voltage board bracket 6. FIG. 4 is a perspective view showing a state in which the high-voltage board bracket 6 is lifted and maintenance can be performed in a state where a portion covered by the high-voltage board bracket 6 is opened before moving, and FIG. FIG.

詳細には、図4は、駆動ユニット11、本体制御基板A、本体制御基板Bのいずれか、あるいはすべてをメンテナンスするときの状態を示す。装置本体背面に取り付けてある既述のカバー類1〜3はすべて取り外す。また高圧基板ブラケット6を画像形成装置本体の保持面である装置本体の背面部に固定しているネジ等(不図示)を取り外す。そして高圧基板ブラケット6の保持形状部9側を支点として上方へ回動させ、電装ボックス5のフランジ形状部5dに高圧基板ブラケット6の保持形状部9を差し込んで固定させる。これにより、高圧制御基板7及び高圧電源基板8に接続されたコネクタを取り外すことなく一時的に装置本体から取り外す。これら高圧制御基板7、高圧電源基板8、コネクタ類は、回動させた高圧基板ブラケット6を装置本体背面の投影面積の内側におさめる。このように構成することでメンテナンス時の作業スペースを低減させることができる。   Specifically, FIG. 4 shows a state in which any one or all of the drive unit 11, the main body control board A, and the main body control board B are maintained. All the covers 1 to 3 described above attached to the back of the apparatus main body are removed. Further, a screw or the like (not shown) that fixes the high-voltage board bracket 6 to the back surface portion of the apparatus main body, which is a holding surface of the image forming apparatus main body, is removed. Then, the holding shape portion 9 side of the high voltage board bracket 6 is turned upward with the supporting shape portion 9 as a fulcrum, and the holding shape portion 9 of the high voltage board bracket 6 is inserted and fixed to the flange shape portion 5d of the electrical box 5. Thus, the connectors connected to the high voltage control board 7 and the high voltage power supply board 8 are temporarily removed from the apparatus main body without being removed. The high-voltage control board 7, the high-voltage power supply board 8, and the connectors hold the rotated high-voltage board bracket 6 inside the projected area on the back of the apparatus main body. With this configuration, the work space during maintenance can be reduced.

高圧制御基板7及び高圧電源基板8と電装ボックス5内の本体制御基板類とは十分な空間距離が保たれる構造とする。また、高圧基板ブラケット6を安定させるために、保持形状部9を図示の例の設置位置と対向する側(図4の状態では上側)に、または左右の側面側に追加して設けてもよい。なお、高圧基板ブラケット6を装置本体の構成部材から取り外して上下方向で回動させてから保持形状部9で固定するように構成してもよい。すなわち、高圧基板ブラケット6を移動させる前の位置でも移動させた後の位置でも固定かつ固定解除可能に支持可能とすることが好ましい。   The high-voltage control board 7 and the high-voltage power supply board 8 and the main body control boards in the electrical box 5 have a structure in which a sufficient spatial distance is maintained. In addition, in order to stabilize the high-voltage board bracket 6, the holding shape portion 9 may be additionally provided on the side facing the installation position in the illustrated example (upper side in the state of FIG. 4) or on the left and right side surfaces. . Note that the high-voltage board bracket 6 may be removed from the constituent members of the apparatus main body and rotated in the vertical direction and then fixed by the holding shape portion 9. In other words, it is preferable that the high-voltage board bracket 6 can be supported so that it can be fixed and unfixed at a position before or after the high-voltage board bracket 6 is moved.

高圧基板ブラケット6をこのような構成とすることで、駆動ユニット11、本体制御基板A、本体制御基板Bをメンテナンスする際に高圧基板ブラケット6が邪魔になりにくくなる。また、高圧基板ブラケット6を図示の例のように180度上方へ回動させて電装ボックス5に覆いかぶさるように固定でき、高圧制御基板7及び高圧電源基板8に接続されたコネクタを取り外さなくてよい。したがって、駆動ユニット11の異音等の不具合を確認する際に、画像形成装置の電源を投入することができる。そのため、装置としての動作をさせながら不具合の確認ができ、メンテナンス時の作業効率が向上する。また、電源を入れても高圧電源基板8が高圧基板ブラケット6の裏面により覆われているので、作業者等が不用意に触れることがなくなり、感電等を防止でき、危険性を低下させ得る。同時に、電装ボックス5内の本体制御基板類にも接触できなくなるため、ショート等の装置破損も防止できる。   By configuring the high-voltage board bracket 6 as described above, the high-voltage board bracket 6 is less likely to become an obstacle when the drive unit 11, the main body control board A, and the main body control board B are maintained. Further, the high-voltage board bracket 6 can be rotated 180 degrees upward as shown in the figure and fixed so as to cover the electrical box 5 without removing the connectors connected to the high-voltage control board 7 and the high-voltage power supply board 8. Good. Therefore, the power of the image forming apparatus can be turned on when confirming a problem such as abnormal noise of the drive unit 11. Therefore, the malfunction can be confirmed while operating as an apparatus, and the work efficiency at the time of maintenance is improved. Moreover, since the high-voltage power supply substrate 8 is covered with the back surface of the high-voltage substrate bracket 6 even when the power is turned on, an operator or the like is not inadvertently touched, an electric shock can be prevented, and the danger can be reduced. At the same time, since it becomes impossible to contact the main body control boards in the electrical box 5, damage to the device such as a short circuit can be prevented.

また、高圧基板ブラケット6の裏面には駆動ユニット11や、本体制御基板AまたはBに関するメンテナンス手順(作業、操作)が書かれた手順書12を貼り付けておく。そうすれば、作業者はサービスマニュアル等を取り出すことなく作業できるようになり、作業効率を向上させ得る。   In addition, a procedure manual 12 in which maintenance procedures (operations and operations) relating to the drive unit 11 and the main body control board A or B are written is pasted on the back surface of the high-voltage board bracket 6. Then, the worker can work without taking out the service manual and the like, and the work efficiency can be improved.

本発明は以上説明した実施形態に限定されるものではなく、多くの変形が本発明の技術的思想内で当分野において通常の知識を有する者により可能である。   The present invention is not limited to the embodiments described above, and many variations are possible by those having ordinary knowledge in the art within the technical idea of the present invention.

1:後上右カバー
2:電装ボックスカバー
3:後下カバー
4:冷却用ファンモータ
5:電装ボックス
5a〜5c:本体制御基板
5d:フランジ形状部
6:高圧基板ブラケット
7:高圧制御基板
8:高圧電源基板
9:保持形状部
10:ハーネス保持部材
10a:ハーネス
11:駆動ユニット
12:手順書
1: Rear upper right cover 2: Electrical box cover 3: Rear lower cover 4: Cooling fan motor 5: Electrical box 5a to 5c: Main body control board 5d: Flange shape part 6: High voltage board bracket 7: High voltage control board 8: High voltage power supply board 9: Holding shape part 10: Harness holding member 10a: Harness 11: Drive unit 12: Procedure manual

特開2002−189320号公報JP 2002-189320 A

Claims (9)

少なくとも1つの電装基板を保持するとともに、画像形成装置本体の保持面に対して移動可能に取り付け得る電装基板保持手段と、
移動させた該電装基板保持手段を前記画像形成装置本体の保持面に支持する際に、保持した前記電装基板の実装面側を前記画像形成装置本体の内側に向けるとともに移動前に前記電装基板保持手段が覆っていた部位を空けた状態で支持する支持手段と、
を備え
前記電装基板保持手段を前記画像形成装置本体に固定した際及び移動させて固定した際のいずれでも、前記電装基板保持手段を前記画像形成装置本体の保持面の投影面の内側におさめる構成とし、前記電装基板保持手段の移動が前記画像形成装置本体の保持面の上下方向での回動である、
ことを特徴とする画像形成装置。
An electrical board holding means capable of holding at least one electrical board and movably attached to the holding surface of the image forming apparatus main body;
When supporting the moved electrical board holding means on the holding surface of the image forming apparatus main body, the mounting surface side of the held electrical board is directed to the inside of the image forming apparatus main body, and the electric board holding is performed before the movement. Support means for supporting the part covered by the means in an empty state;
Equipped with a,
When the electric substrate holding means is fixed to the image forming apparatus main body and when the electric substrate holding means is moved and fixed, the electric substrate holding means is configured to fit inside the projection surface of the holding surface of the image forming apparatus main body, The movement of the electrical board holding means is the vertical rotation of the holding surface of the image forming apparatus main body,
An image forming apparatus.
請求項1に記載の画像形成装置において、前記電装基板保持手段が、前記画像形成装置本体の保持面に移動可能に固定した基板ブラケットであることを特徴とする画像形成装置。   2. The image forming apparatus according to claim 1, wherein the electrical board holding means is a substrate bracket movably fixed to a holding surface of the main body of the image forming apparatus. 請求項1又は2に記載の画像形成装置において、前記支持手段が、前記電装基板保持手段を前記画像形成装置本体に対して移動させる前の位置でも移動させた後の位置でも固定かつ固定解除可能に支持する手段であることを特徴とする画像形成装置。   3. The image forming apparatus according to claim 1, wherein the supporting unit can be fixed and unfixed at a position before or after the electrical substrate holding unit is moved relative to the image forming apparatus main body. An image forming apparatus characterized in that the image forming apparatus is a supporting means. 請求項1乃至3のいずれか一項に記載の画像形成装置において、前記電装基板保持手段を前記画像形成装置本体に固定した際及び前記移動させて固定した際のいずれでも、前記電装基板保持手段を前記画像形成装置本体の保持面の投影面の内側におさめる構成としたことを特徴とする画像形成装置。 The image forming apparatus according to any one of claims 1 to 3, wherein the electrical component mounting board holding means either when the fixed and by the moving time is fixed to the image forming apparatus main body, the electrical component mounting board holding means An image forming apparatus characterized in that the image forming apparatus is configured to fit inside the projection surface of the holding surface of the main body of the image forming apparatus. 請求項1乃至4のいずれか一項に記載の画像形成装置において、前記電装基板が高圧電源基板であることを特徴とする画像形成装置。 The image forming apparatus according to any one of claims 1 to 4, an image forming apparatus wherein the electrical substrate is a high-voltage power supply board. 請求項1乃至5のいずれか一項に記載の画像形成装置において、前記電装基板保持手段を移動させて固定した際に、前記電装基板保持手段の前記画像形成装置本体の保持面の側の面と前記画像形成装置本体の保持面との間に前記電装基板の動作を可能にするのに十分な沿面距離及び/又は空間距離を有する構成としたことを特徴とする画像形成装置。 The image forming apparatus according to any one of claims 1 to 5, when the fixed by moving the electrical component mounting board holding means, the surface on the side of the holding surface of the image forming apparatus main body of the electrical component mounting board holding means An image forming apparatus having a creeping distance and / or a spatial distance sufficient to enable operation of the electrical board between the image forming apparatus main body and a holding surface of the image forming apparatus main body. 請求項1乃至6のいずれか一項に記載の画像形成装置において、前記電装基板保持手段の移動が前記画像形成装置本体の保持面の上下方向での回動であることを特徴とする画像形成装置。 The image forming apparatus according to any one of claims 1 to 6, image forming, characterized in that movement of the electrical component mounting board holding means is rotated in the vertical direction of the holding surface of the image forming apparatus main body apparatus. 請求項1乃至7のいずれか一項に記載の画像形成装置において、移動前に前記画像形成装置本体の保持面の側に向く前記電装基板保持手段の面に、メンテナンスその他の作業、操作に関する手順を記載したことを特徴とする画像形成装置。 The image forming apparatus according to any one of claims 1 to 7, wherein a maintenance-related procedure or operation is performed on the surface of the electrical board holding unit facing the holding surface of the image forming apparatus main body before moving. An image forming apparatus characterized by that. 請求項1乃至7のいずれか一項に記載の画像形成装置において、移動前に前記画像形成装置本体の保持面側に向く前記電装基板保持手段の面に、メンテナンスその他の作業、操作に関する手順を記載した手順書を配置したことを特徴とする画像形成装置。
The image forming apparatus according to any one of claims 1 to 7, the surface of the electrical component mounting board holding means facing the holding surface side of the image forming apparatus main body prior to movement, maintenance and other work, the procedure relating to the operation An image forming apparatus comprising a written procedure manual.
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