Optical path protective device

Abstract

Abstract PURPOSE: To make the cleaning of optical path unnecessary by construction which is designed to open and close the optical path by revolution of shutter part, so that said optical path passes through the slit port made by the partition parts located in the optical path and said partition parts provided on the way of optical path form a space connecting to the exterior of the apparatus box. CONSTITUTION: Space 100 is formed by the partition parts 23 provided on the way of optical path, and the developing device is mounted/dismounted or the supply of toner is carried out thrugh said space. When opening the lid 20 of the space 100, link-mounted side of the lever 29 descends by its own weight, and the shutter part 28 revolves by about 90° by means of the lind 31 and the lever 32, thereby closing the optical path. When the lid 20 is closed after supplying the toner under said status, protrudion 20a pushes down the lever 29, and then, the link-mounted side of said lever 29 ascends, thereby the shutter part 28 revolves to make the optical path being open. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Kenji Okawara

Bibliographic Details