| 摘要 |
A mirror frame for an image forming apparatus has first and second mirror holders for holding a reflection mirror at two different locations and angular orientations. The reflection mirror is installed in either the first or second holder, depending on the type of condenser lens unit used in the device, so that a light beam used to read a document is accurately focused on a light receiving device. The apparatus may also include a V-shaped condenser lens unit mounting frame that allows different sized condenser lens units to be used on the same frame.
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