Abstract: A sheet-feeding device for separating sheets stored in a sheet storage unit by blowing air heated by a heater toward the sheets includes a controller which detects an abnormality when a heater temperature does not reach a first predetermined temperature within a predetermined time. The controller continues to control the heater temperature but stops determining whether or not the heater temperature is increased to the first predetermined temperature within the predetermined time when it is detected that the sheet storage unit is in an open state.

Abstract: The proposed apparatus is designed for being capable of recovering even when the overlapped transport of insert sheets has occurred without stopping the apparatus, thereby providing an improved utility to the users. The apparatus includes a first sheet feeder for sequentially separating blank sheets into individual sheet, an image forming device for forming images on the blank sheets, a transport device for waiting the blank sheet to be supplied to the image forming apparatus at predetermined time, a second sheet feeder for sequentially separating the insert sheets into individual sheet, an overlapped transport detecting device for determining whether or not the insert sheets have been transported in overlapped condition, and a controller for discharging all the insert sheets of a set involved in the overlapped transport onto a predetermined place, finding the first insert sheet of a next set of insert sheets, and discontinuing the drive of the transport device.

Abstract: A sheet-feeding device for separating sheets stored in a sheet storage unit by blowing air heated by a heater toward the sheets includes a controller which detects an abnormality when a heater temperature does not reach a first predetermined temperature within a predetermined time. The controller continues to control the heater temperature but stops determining whether or not the heater temperature is increased to the first predetermined temperature within the predetermined time when it is detected that the sheet storage unit is in an open state.

Abstract: The proposed apparatus is designed for being capable of recovering even when the overlapped transport of insert sheets has occurred without stopping the apparatus, thereby providing an improved utility to the users. The apparatus includes a first sheet feeder for sequentially separating blank sheets into individual sheet, an image forming device for forming images on the blank sheets, a transport device for waiting the blank sheet to be supplied to the image forming apparatus at predetermined time, a second sheet feeder for sequentially separating the insert sheets into individual sheet, an overlapped transport detecting device for determining whether or not the insert sheets have been transported in overlapped condition, and a controller for discharging all the insert sheets of a set involved in the overlapped transport onto a predetermined place, finding the first insert sheet of a next set of insert sheets, and discontinuing the drive of the transport device.

Abstract: An original conveying apparatus including an original stacker, a conveying roller for conveying originals on the original stacker one by one, a first rotary member for further conveying the original to a reading position, a second rotary member for conveying the original conveyed by the first rotary member to read the original, a reading device, a sensor disposed in the vicinity of the first rotary member for detecting passage of the original, and a control device for controlling an original conveying amount of the second rotary member by the action of the sensor to convey a leading end of the original to a predetermined position on the reading position, and wherein the control device controls the original conveying amount in consideration of a length of the original based on a timing when a trailing end of the original passes by the sensor when the original has a fixed size and controls the original conveying amount based on a timing when a leading end of the original passes by the sensor when the original h

Abstract: Sheet processing apparatus including a first tray for stacking sheets received from an image forming apparatus, a discharge unit for discharging the sheets from the first tray in a bundle, a second tray for stacking the sheets discharged from the first tray, a discriminating unit for discriminating an attribute of a sheet to be stacked on the first tray, and a controller for selectively controlling whether or not to discharge sheets by the discharge unit in accordance with a discrimination of the discriminating unit.

Abstract: An original carrying apparatus includes a separation unit for separating one original from a plurality of stacked originals, a carrying roller for carrying the original separated by the separation unit, a carrying belt for receiving the original carried by the carrying roller, and carrying the originals in a state where the plurality of originals are being held, wherein the carrying belt carries the original such that the original passes through an exposure position at a first speed, and a control unit for performing control to set an interval between the two originals carried by the carrying belt to be a first distance. The control unit performs the control to set the interval between the two originals to be the first distance after setting it to be a second distance shorter than the first distance, by using the carrying roller. Further, the control unit accelerates the carrying belt up to a second speed, decelerates the second speed to the first speed to set the second distance to be the first distance.

Abstract: A stack sheet supplying apparatus has a sheet stacking unit, a supply roller for supplying a sheet by contacting with an uppermost sheet in a sheet stack resting on the sheet stacking unit, a lift/lower device for controlling lifting and lower of the supply roller, a drive for driving the lift/lower device, a detector for detecting the fact that the supply roller reaches a supply position after the supply roller is lowered, and a control for turning OFF the drive on the basis of a detected result of the detector.

Abstract: The present invention provides an original conveying apparatus in which originals stacked on an original tray are separated one by one by a separation unit to be conveyed to a reading portion for reading an image, and then the read original is discharged.