摘要:
A method of operating an electrophotographic printer includes the steps of: transporting a print medium at a first operating speed using a print medium transport assembly; transporting the print medium from the print medium transport assembly to a fuser assembly, the fuser assembly including a fuser roll; creating a bubble in the print medium between the paper transport assembly and the fuser assembly; determining a temperature associated with the fuser roll; and rotating the fuser roll at a second operating speed which is dependent upon the determined temperature.
摘要:
A method of determining a relative speed between two separately driven members in an image forming apparatus, includes the steps of: transporting a print medium using a print media transport assembly including a first nip, the print media transport assembly operable at a first transport speed; driving a rotatable member associated with a second nip at a second transport speed which is independent from the first transport speed; printing a first image on the print medium when the print medium is in at least one of the first nip and the second nip; printing a second image on the print medium when the print medium is in each of the first nip and the second nip, the second image overlapping the first image; detecting a moiré pattern caused by the first image and the second image; and determining a speed relationship between the first transport speed and the second transport speed, dependent upon the detected moiré pattern.
摘要:
A method of determining a relative speed between two separately driven members in an image forming apparatus, includes the steps of: transporting a print medium using a print media transport assembly including an exit nip, the print media transport assembly operable at a first transport speed; driving a rotatable member associated with an entrance nip using an electric motor at a second transport speed which is independent from the first transport speed; transferring the print medium from the exit nip to the entrance nip; detecting an electrical characteristic of the motor when the print medium is present in each of the exit nip and the entrance nip; and determining a relative speed between the first transport speed and the second transport speed.
摘要:
A method of operating a fuser for duplex printing includes equilibrating the fuser roll surface temperatures by rotating the rolls at a speed faster than the process speed between fusing an image on a first side of the media and fusing an image on a second side of the media.
摘要:
The present invention is directed to a device having an arm and a sensor that can differentiate two events. The arm is pivotally mounted to move in different directions upon the occurrence of different events. A section of the arm includes a trigger section having an unequal distribution of a sensed characteristic. A first event moves the arm in a first direction that is sensed by the sensor in a first manner. A second event moves the arm in a second direction that is sensed by the sensor in a second manner. The sensor signals a controller that oversees the image forming process. Methods of operating the arm and sensor are disclosed for detecting the two separate events, and signaling the controller accordingly.
摘要:
A power supply control system for a fuser assembly in an electrophotographic apparatus includes a power supply and a fuser assembly. The power supply includes a first electrical path designated for a fuser assembly that operates at a first voltage and a second electrical path designated for a fuser assembly that operates at a second voltage. The fuser assembly is configured to operate at a select one of the first voltage or the second voltage and is connected to the first electrical path if the fuser assembly operates at the first voltage, and the fuser assembly is connected to the second electrical path if the fuser assembly operates at the second voltage. The first and second electrical paths allow different device features including power limiting devices such as fuses, switches, relays, etc., to be placed in each path.
摘要:
A method is provided for operating an electrophotographic printer comprising providing an electrophotographic printer comprising a substrate transport assembly including a substrate transport member and a fuser assembly including a fuser member. The substrate transport assembly is operated such that the substrate transport member is driven at a substrate transport linear speed. The fuser assembly is operated such that an outer surface of the fuser member moves at a fuser assembly linear speed. The fuser assembly linear speed is a first fractional amount of the substrate transport linear speed for at least normal size substrates such that a bubble in a normal size substrate between the paper transport assembly and the fuser assembly is created, and the fuser assembly linear speed is a second fractional amount of the substrate transport linear speed for envelopes. The second fractional amount may be greater than the first fractional amount.
摘要:
A method of operating an image forming apparatus includes the steps of: storing information in a memory located in a fuser assembly; and changing at least one operating characteristic of the image forming apparatus based upon the stored information. In a more particular example of the present invention, a method of operating an electrophotographic printer includes the steps of: storing information in a memory located in a fuser assembly; installing the fuser assembly in the printer; and controlling operation of the fuser assembly using a controller in the printer, dependent upon the stored information.
摘要:
An arm that directs media sheets along multiple paper paths of an image forming device. The arm is mounted to pivot when contacted by the media sheet to direct the sheets along the proper media paths, and divert the sheets from entering the improper media paths. A sensor positioned adjacent to the arm senses movement of the arm to determine the location and timing of the media sheets as they move along the paper paths. Sensor is operatively connected to a controller which tracks the movement of the media sheets through the image forming apparatus. The arm may further be positioned to determine the orientation of an internal part. The arm moves between first and second orientations depending upon the position of the internal part. The position of the arm is again determined by the sensor. The invention further includes methods of moving the position of the arm to determine the location of the media sheets and/or the orientation of the internal part.
摘要:
A helical auger member for transporting toner in an image forming apparatus. The auger member may be implemented as part of a waste toner removal system for removing toner from a photoconductive member of a toner cartridge. Toner that is removed by a cleaner member is transported through a cleaner housing with a helical member, such as a coil wire, having a pitch to outer diameter ratio from about 1.5 to 2.5.