Seiko Epson Corporation

Masaya Yamasaki

Kazuhiko Arimori

Makoto Wada

Hiromichi Kitsuki

Kosuke Nomoto

An image reading device includes a motor, a reading sectionthat reads an image on a medium, a first transporting rollerthat transports the medium in a transport direction F by driving force of the motor and that is provided upstream of the reading section in the transport direction, a second transporting rollerthat transports the medium in the transport direction by driving force of the motor and that is provided downstream of the reading section in the transport direction, and a measuring section, using an encoder sensor, configured to measure the rotational position of an encoder scale, wherein the encoder scaleis provided on a rotation shaftof the second transporting roller

Image reading device having measuring section with encoder

A medium transport apparatus includes a controller that determines how many transport roller pairs disposed on a medium transport route are transporting a medium, based on detection information from detectors disposed in relation to respective transport roller pairs. Then, the controller sets a threshold to a larger value as a larger number of transport roller pairs are transporting the medium and sets the threshold to a lower value as a smaller number of transport roller pairs are transporting the medium.

Growing community of inventors

Kitakyushu, Japan

Masaya Yamasaki