Position adjustment apparatus of imaging unit, the imaging unit, and image reading apparatus including the imaging unit

An imaging unit comprising:

• a base frame;
• an image sensor to read a document image;
• a focusing lens unit to form the document image by using the image sensor;
• and
• a position adjustment apparatus to couple the focusing lens unit and the image sensor to the base frame so as to adjust positions of the focusing lens unit and the image sensor,
• wherein the position adjustment apparatus comprises:
• an adjustment frame on which the focusing lens unit and the image sensor are installed;
• a height fixing member to couple the adjustment frame to the base frame to fix a height of the adjustment frame at a fixed support position;
• and
• first and second adjustment members to couple the adjustment frame to the base frame to adjust the height of the adjustment frame at first and second adjustable support positions.

An image reading apparatus comprising:

• a document stand;
• and
• an imaging unit to detect an image from the document stand,
• wherein the imaging unit comprises:
• a base frame;
• an image sensor to read a document image;
• a focusing lens unit to form the document image by using the image sensor;
• and
• an adjustment frame on which the focusing lens unit and the image sensor are installed,
• wherein the adjustment frame is supported at first, second, and third support positions with respect to the base frame, and a height of the adjustment frame is adjustable at the first and the second support positions with respect to the base frame.

An image forming apparatus comprising:

• an image reading apparatus which includes a document stand and an imaging unit to detect an image from the document stand;
• and
• a printing unit to print an image on a sheet according to an electrophotographic process,
• wherein the imaging unit comprises:
• a base frame;
• an image sensor to read a document image;
• a focusing lens unit to form the document image by using the image sensor;
• and
• a position adjustment apparatus to couple the focusing lens unit and the image sensor to the base frame so as to adjust positions of the focusing lens unit and the image sensor,
• wherein the position adjustment apparatus comprises:
• an adjustment frame on which the focusing lens unit and the image sensor are installed,
• wherein the adjustment frame is supported at first, second, and third support positions with respect to the base frame, and a height of the adjustment frame is adjustable at the first and the second support positions with respect to the base frame.