The present application is based on, and claims priority from JP Application Serial Number 2020-174593, filed Oct. 16, 2020, the disclosure of which is hereby incorporated by reference herein in its entirety.

BACKGROUND

1. Technical Field

The present disclosure relates to an image reading apparatus that reads images of documents.

2. Related Art

Image reading apparatuses, such as scanners, are categorized into various types, such as sheet-fed image reading apparatuses and flatbed image reading apparatuses. Sheet-fed image reading apparatuses read images of documents while feeding the documents. Flatbed image reading apparatuses read images of documents mounted on a document positioning glass by using a line sensor that moves with respect to the document positioning glass. In addition, some image reading apparatuses are provided with a combination of a sheet-fed scanner and a flatbed scanner, such as the scanner described in JP-A-2003-333278.

In the scanner described in JP-A-2003-333278, however, the sheet-fed scanner and the flatbed scanner are combined to be horizontally parallel in the vertical direction, resulting in a large scanner.

SUMMARY

According to an aspect of the present disclosure, an image reading apparatus for solving the above-described problem includes an upper unit and a lower unit that is disposed vertically below the upper unit at a given spacing. The upper unit includes a feed tray configured to support a document to be fed such that the document is inclined at an angle of 45° or more with respect to the horizontal, a feed section configured to feed the document supported by the feed tray in a direction having a vertically downward component, a transport path configured to transport the document fed by the feed section and reverse the document in a direction having a vertically upward component, a first reader disposed on the transport path, the first reader being configured to read the document, a discharge section disposed downstream of the first reader on the transport path, the discharge section being configured to discharge the document in a direction having a vertically upward component, and a discharge tray configured to support the document discharged by the discharge section such that the document is inclined at an angle of 45° or more with respect to the horizontal. The lower unit includes a document positioning plate on which a document is mounted and a second reader disposed vertically below the document positioning plate, the second reader being configured to read the document mounted on the document positioning plate. A portion of the first reader and a portion of the document positioning plate overlap when viewed from vertically above.

