Image forming apparatus with paper presence and paper width sensor

摘要

An image forming apparatus includes a body; a paper supply tray mounted in the body; a first sensor including a light emitting element and a light receiving element; a first actuator including a first actuating arm to sense the presence of the printing medium stored in the paper supply tray by coming into contact with and being moved by the printing medium, a second actuating arm to sense a width of the printing medium by selectively coming into contact with and being moved by the printing medium fed to the printing path according to the width of the printing medium, and a first sensing arm placed between the first actuating arm and the second actuating arm to intercept the light that would otherwise be transmitted to the light receiving element by being moved in linkage with the first actuating arm and the second actuating arm.

主权项

1. An image forming apparatus comprising:
a body having a printing path; a paper supply tray separably mounted in the body, in which a printing medium is stored; a first sensor including a light emitting element and a light receiving element arranged to face each other, the first sensor generating a sensed signal as the light receiving element receives light emitted from the light emitting element; and a first actuator including
a first actuating arm to sense the presence of the printing medium stored in the paper supply tray by coming into contact with and being moved by the printing medium,a second actuating arm to sense a width of the printing medium by selectively coming into contact with and being moved by the printing medium fed to the printing path according to the width of the printing medium, anda first sensing arm placed between the first actuating arm and the second actuating arm to intercept the light that would otherwise be transmitted to the light receiving element by being moved in linkage with the first actuating arm and the second actuating arm.