Document feeder and image forming apparatus

A document feeder comprising:

• a transport path to transport a document;
• and an image reader positioned along the transport path to read the document being transported, wherein
• the image reader includes in a housing a light source, a plurality of reflecting mirrors, a lens, and a photoelectric transducer, as well as reads an image by reflecting light reflected at a document reading position of the document and directing the light to be incident on the photoelectric transducer with the plurality of reflecting mirrors, wherein
• when a first mirror first reflects the light reflected from the document among the plurality of reflecting mirrors,
• the first mirror is positioned opposite to the document reading position with respect to an optical path connecting a reflecting mirror that lastly reflects the light reflected from the document and the photoelectric transducer, wherein
• the light reflected from the document travels along an optical path in which the light is sequentially reflected with three reflecting mirrors consisting of the first mirror, a second mirror, and a third mirror in this order, and is incident on the photoelectric transducer through the lens, and
• an optical path connecting the document reading position and the first mirror intersects both an optical path connecting the second mirror and the third mirror, and an optical path connecting the third mirror and the photoelectric transducer, as well as an optical path connecting the first mirror and the second mirror intersects an optical path connecting the third mirror and the photoelectric transducer.

A document feeder comprising:

• a transport path to transport a document;
• and an image reader positioned along the transport path to read the document being transported, wherein
• the image reader includes in a housing a light source, a plurality of reflecting mirrors, a lens, and a photoelectric transducer, as well as reads an image by reflecting light reflected at a document reading position of the document and directing the light to be incident on the photoelectric transducer with the plurality of reflecting mirrors, wherein
• when a first mirror first reflects the light reflected from the document among the plurality of reflecting mirrors,
• the first mirror is positioned farther away from the document reading position than other reflecting mirrors in an optical axis direction of an optical path connecting the document reading position and the first mirror, and wherein
• the light reflected from the document travels along an optical path in which the light is sequentially reflected with three reflecting mirrors consisting of the first mirror, a second mirror, and a third mirror in this order, and is incident on the photoelectric transducer through the lens, and
• the second mirror, the third mirror, and the first mirror are positioned to be apart in this order from the document reading position in the optical axis direction of the optical path connecting the document reading position and the first mirror.

A document feeder comprising:

• a transport path to transport a document;
• and an image reader positioned along the transport path to read the document being transported, wherein
• the image reader includes in a housing a light source, a plurality of reflecting mirrors, a lens, and a photoelectric transducer, as well as reads an image by reflecting light reflected at a document reading position of the document and directing the light to be incident on the photoelectric transducer with the plurality of reflecting mirrors, wherein
• when a first mirror first reflects the light reflected from the document among the plurality of reflecting mirrors,
• the first mirror is positioned opposite to the document reading position with respect to an optical path connecting a reflecting mirror that lastly reflects the light reflected from the document and the photoelectric transducer, and wherein
• the light reflected from the document travels along an optical path in which the light is sequentially reflected with three reflecting mirrors consisting of the first mirror, a second mirror, and a third mirror in this order, and is incident on the photoelectric transducer through the lens, and
• the second mirror, the third mirror, and the first mirror are positioned to be apart in this order from the document reading position in the optical axis direction of the optical path connecting the document reading position and the first mirror.