IMAGE FORMATION DEVICE

• Main Authors: TAKENAKA YASUTA, HIRAKAWA KOTA, HOSONO GAKU, MAEDA HIDEHIKO, ISHII HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 04.08.2016
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide an image formation device that can secure positioning accuracy as reducing force required for a movement of a drawer unit.SOLUTION: An image formation device 10 has an image formation mechanism unit provided in a device main body 12, and the image formation device comprises: a drawer unit 63 that has a part of the image formation mechanism unit provided, and can be drawn with respect to the device main body 12; a positioning pin 71 that is provided in any of the drawer unit 63 and the device main body 12, and protrudes in a protrusion direction; and a shaft bearing unit 72 that causes the positioning pin 71 to be inserted. The shaft bearing unit 72 has a non-contact region 73 located at one part when viewing in a circumferential direction in an inner peripheral face 72a, and not in contact with an outer peripheral face 71a of the positioning pin 71 in at least three portions when viewing in the circumferential direction, and in the shaft bearing unit 72, one of contact regions 74 other than the non-contact regions 73 in the inner peripheral face 72a is caused to be located in a direction of receiving a load from the positioning pin 71 toward a direction orthogonal to a drawing direction when viewing in the circumferential direction.SELECTED DRAWING: Figure 9 【課題】引出ユニットの移動に要する力を低減しつつ位置決め精度を確保することのできる画像形成装置を提供する。【解決手段】画像形成機構部が装置本体１２に設けられた画像形成装置１０である。画像形成機構部の一部が設けられ装置本体１２に引き出し可能な引出ユニット６３と、引出ユニット６３および装置本体１２のいずれかに設けられ引出方向に突出する位置決めピン７１と位置決めピン７１を挿入させる軸受部７２と、を備え、軸受部７２は、内周面７２ａにおいて、周方向で見た一部分に位置しかつ位置決めピン７１の外周面７１ａと接触しない非接触領域７３を、周方向で見て少なくとも３個所に有し、軸受部７２では、内周面７２ａにおける非接触領域７３以外の接触領域７４のうちの１つを、周方向で見て引出方向に直交する方向への位置決めピン７１からの荷重を受ける向きに位置させる。【選択図】図９