JP2003271027A5 - - Google Patents

Claims (9)

An image carrier, an image forming unit, a transfer unit, a cleaning unit, and a fixing unit, and the image forming unit, the transfer unit, and the cleaning unit are arranged in the order in the moving direction of the image carrier. And an image forming apparatus in which the fixing unit is disposed in the conveyance path of the recording material that has passed through the transfer unit.
An image forming apparatus comprising: an exhaust unit that exhausts air between the transfer unit and the cleaning unit; and a control unit that controls an exhaust amount of the exhaust unit. The image forming apparatus according to claim 1, wherein the exhaust unit includes an exhaust fan, and the control unit controls the exhaust fan . The image forming apparatus according to claim 2, wherein the control unit controls the exhaust unit based on information from a developing unit in the image forming unit. The image forming apparatus according to claim 3 , wherein the control unit creates developer usage history information from the operation information of the developing unit, and controls the exhaust unit based on the usage history information . In addition to having recycling means for recycling the toner collected in the cleaning means, the control means creates toner recycling ratio information and controls the exhaust means based on the recycling ratio information. The image forming apparatus according to any one of claims 1 to 4 . 6. The image forming apparatus according to claim 5, further comprising a toner replenishing unit, wherein the control unit creates the recycling ratio information from an operation time of the recycling unit and an operation time of the toner replenishing unit. . It has density detecting means for detecting the density of the toner image on the image carrier, and the control means controls the exhaust means based on density information from the density detecting means and development conditions. The image forming apparatus according to claim 5 . 8. The apparatus according to claim 1, further comprising a temperature detection unit that detects a temperature in the vicinity of the cleaning unit, and the control unit controls the exhaust unit based on temperature information from the temperature detection unit. whether the image forming apparatus according to (1). The image forming apparatus according to claim 1, wherein the control unit controls the exhaust unit based on operation information of the fixing unit .