Abstract: A cleaning method of a toner image carrying body, includes the steps of: bringing a discharging member formed in a shape of flexible plate having electric conductivity, which is electrically grounded or to which a discharging voltage is applied, into contact with the toner image carrying body, thereby discharging a toner on the toner image carrying body; and operating a cleaning device on the toner image carrying body whereby cleaning the toner.

Abstract: An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identical signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning means, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.

Abstract: An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identic signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning circuit, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.

Abstract: An automatic tuning apparatus is capable of automatically switching a tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by a user. The apparatus comprises a SYNC discrimination circuit (11) for discriminating whether or not a video signal system is a NTSC system or another system, a tuning mode switching circuit (12) for switching a tuning mode, and a color discrimination circuit (13) for receiving a color burst signal (identic signal) for discriminating whether the video signal system is a PAL system or a SECAM system. As to the NTSC system, the PAL system, the SECAM system and a SECAM-L system, the user may not set the tuning mode of tuning means, whereby an automatic tuning apparatus imposing no burden on the user can be provided.

Abstract: An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identic signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning circuit, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.

Abstract: A cleaning device has a plurality of cleaning blades capable of coming into contact with an image carrier; a rotatable supporting shaft on which the blades are affixed; and a blade replacement mechanism that rotates the supporting shaft and thereby replaces the blade that is in contact with the image carrier with another blade by rotating the supporting shaft. The blade replacement mechanism includes a supporting shaft mover for moving a blade between a position in which the blade comes into pressure contact with the image carrier and a position in which the blade separated from the image carrier; a moving controller connected with the supporting shaft mover; and a rotator for rotating the blade supporting shaft when the blade takes a position in which the blade separates from the image carrier.