| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus wherein a scanning substrate having a scanning system mounted thereon can be detached without decomposing the body of the image forming apparatus, thereby improving the workability. SOLUTION: In an image forming apparatus 1, an engine control board 12, an optical scanning device board 13, an interface board 14 and a power source board 15 are detachably and perpendicularly attached to a mother board 11 which is vertically provided in a housing 2 of the apparatus. A connection terminal section 105 to be inserted into a connector 11a of the mother board 11 is formed on each of the boards 12-15 so that the connection is established by inserting the connection terminal section 105 into the connector 11a. A light emitting section 101 which is an optical scanning system of the image forming apparatus 1, a polygon mirror section 102, a lens section 103, a synchronism detecting section 104 and various electric parts are substantially integrally provided to the optical scanning device board 13. Working for upgrading the apparatus 1 to be in an upper grade or recovering it can be readily executed by detaching or attaching the optical scanning device board 13 from or to the mother board 11.
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