摘要:
A heater is installable in a fixing device having a fixing nip through which a recording medium is conveyed. The heater includes a base including a downstream portion in a recording medium conveyance direction. A heat generator is mounted on the base. A projection is disposed separately from the base and shifted from the heat generator. The projection is disposed opposite the downstream portion of the base. The projection projects toward the fixing nip in a state in which the heater is installed in the fixing device.
摘要:
A fixing device includes a fixing rotator and a pressure rotator that is disposed opposite the fixing rotator. A nip former is disposed inside a loop formed by the fixing rotator and disposed opposite the pressure rotator via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The fixing rotator slides over the nip former. A flange supports the fixing rotator at both lateral ends of the fixing rotator in a longitudinal direction of the fixing rotator. The nip former includes a base and a thermal conductor that has a thermal conductivity greater than a thermal conductivity of the base. The base is greater than the thermal conductor in the longitudinal direction of the fixing rotator. The base includes a groove that is disposed outboard at least from the thermal conductor in the longitudinal direction of the fixing rotator.
摘要:
A center portion (30) of a V-shaped cutter blade (20) includes center large teeth (31) and center middle teeth 32 the tooth height of which is less than the tooth height of the center large teeth (31). End portions (50) of the cutter blade (20) each include first end teeth (51) and second end teeth (52) the tooth height of which is less than the tooth height of the first end teeth (51). Tooth tops of the first end teeth 51 of each end portion (50) are located on a straight line (L1), which extends through tooth tops of the center large teeth (31) located on one of the right half and the left half of the center portion (30).
摘要:
A center portion (30) of a V-shaped cutter blade (20) includes center large teeth (31) and center middle teeth 32 the tooth height of which is less than the tooth height of the center large teeth (31). End portions (50) of the cutter blade (20) each include first end teeth (51) and second end teeth (52) the tooth height of which is less than the tooth height of the first end teeth (51). Tooth tops of the first end teeth 51 of each end portion (50) are located on a straight line (L1), which extends through tooth tops of the center large teeth (31) located on one of the right half and the left half of the center portion (30).
摘要:
A web driving device including a web, a winding axis connected to a first end of the web and configured to rotate and wind the web about the winding axis in a winding direction, and a supplying axis connected to a second end of the web and configured to rotate. The web driving device further includes a driving device configured to drive the winding axis in the winding direction. The driving device is configured to prevent rotation of the winding axis when the driving device is in an inactive condition. The web driving device further advantageously includes an intermediate gear device engaged to the winding axis and configured to restrict rotation of the supplying axis when the winding axis stops rotating.
摘要:
A device, and method implemented by the device, employs a fixing device to heat and apply pressure to an image forming substance held on an image holding member so as to affix the image forming substance on the image holding member. The device includes a web and a web driving mechanism that operate under the control of a controller. The controller controls a movement of the web to clean a nip portion of the fixing device during a suspending mode of operation. By moving the web against the fixing unit during the suspending mode of operation, the residual image forming substance is prevented from remaining on the fixing device for too long of a period of time, thereby lowering the risk of damaging the fixing unit, which may occur if the residual image forming substance is removed from the fixing device after being secured attached to the fixing device.
摘要:
A display control apparatus for a display apparatus having a display device in which a liquid crystal such as a ferroelectric liquid crystal is used as an operating medium for display-updating and the updated display state can be held by applying an electric field or the like. The display control apparatus comprises a first updating circuit to update the display content of the entire screen of the display apparatus, a second updating circuit to update the display content of a part of the display screen, a detector to detect an external factor such as a temperature of the display apparatus, and a switching circuit to switch the first and second updating circuits in accordance with the detected external factor.
摘要:
A fixing device includes a fixing roller which has a heater therein, a pressing roller which is in contact with the fixing roller, a cleaning roller which is in contact with and cleans the fixing roller, a blade which is in contact with the cleaning roller and scrapes toner or paper dust on the cleaning roller. The surface of the blade is coated with a resin containing an additive and the surface resistance value of the coating layer is 1.times.10 .OMEGA. or less.
摘要:
An image forming apparatus includes a heating device including a rotator member, a heating member configured to heat the rotator member. The heating member is switchable between a first heat generation state in which an amount of heat generated on a first side is larger than an amount of heat generated on a second side in the intersection direction and a second heat generation state in which the amount of heat generated on the second side is larger than the amount of heat generated on the first side, The image forming apparatus is configured to switch between the first heat generation state and the second heat generation state while executing a job of continuously forming an image on a plurality of recording media having a same length in the intersecting direction.
摘要:
A heating device includes an endless belt, an opposed rotator, a heater, and a heat transfer portion. The opposed rotator is configured to contact the endless belt to form a nip between the endless belt and the opposed rotator. The heater includes a plurality of resistive heat generators configured to heat the endless belt. The heater is configured to generate a larger amount of heat on a first side of the heater than a second side of the heater in a longitudinal direction of the heater. The first side is opposite to the second side with respect to a center position of a heating span of all the plurality of energized resistive heat generators in the longitudinal direction of the heater. The heat transfer portion is disposed on the first side to release heat from the heating span.