Abstract: A method for regulating dew formation on a photosensitive drum in an image forming apparatus comprises detecting the surface temperature of the photosensitive drum, detecting the internal temperature of the image forming apparatus and detecting the internal humidity of the image forming apparatus. A dew point is calculated and it is determined whether the surface temperature is higher than the dew point. If the surface temperature is lower than the dew point then the operation state one or more components within the image forming apparatus is adjusted to regulate dew formation. However, if the surface temperature remains higher than the sum of the dew point and the threshold value, normal operation is maintained.

Abstract: A method for regulating dew formation on a photosensitive drum in an image forming apparatus comprises detecting the surface temperature of the photosensitive drum, detecting the internal temperature of the image forming apparatus and detecting the internal humidity of the image forming apparatus. A dew point is calculated and it is determined whether the surface temperature is higher than the dew point. If the surface temperature is lower than the dew point then the operation state one or more components within the image forming apparatus is adjusted to regulate dew formation. However, if the surface temperature remains higher than the sum of the dew point and the threshold value, normal operation is maintained.

Abstract: An image read apparatus using an image read unit arranged to prevent any transferable contamination on a document from being carried to a read position is provided.

Abstract: A copying machine includes a copying unit, an automatic original feeding unit, and a sorting unit. The sorting unit includes discharging rollers and a tray unit. The tray unit is detachable to a main body and includes a plurality of trays which are detachably connected to the tray unit. The discharging rollers are located in the main body and moves upward and downward. The sorting unit further includes a tray detecting device which detects the position of a tray of the tray unit. Before the copying unit makes a copy, the detecting device detects the tray unit and each tray of the tray unit. When one of the trays is detected, a CPU memorizes the position of the tray and controls the discharging rollers to move upward or downward to the position facing the tray of the tray unit. A sheet from the copying unit is conveyed to the sorting unit. The sorting unit includes a pair of guide plates which define a guide path.

Abstract: A copying machine includes an apparatus body and a cooling mechanism for cooling the interior of the body. The interior of the body is divided by plates into a first chamber enclosing an exposing unit and a second chamber enclosing an image carrier and a fixing unit. The cooling mechanism includes a cooling duct located between the image carrier and the fixing unit and extending along the image carrier, a first fan for drawing air from the second chamber through the cooling duct, and a second fan arranged in the first chamber so as to draw air therefrom.