Abstract:
A belt device incorporatable in an image forming apparatus includes an endless belt, multiple belt tension rollers disposed in contact with an inner surface of the endless belt, a rotary cleaning member to contact a belt wound area of the endless belt facing an opposing roller to form a cleaning nip between the rotary cleaning member and the endless belt and rotate the rotary cleaning member in a direction opposite the belt moving direction within the cleaning nip, and a voltage applier. The cleaning nip is formed by offsetting a center of the cleaning nip upstream from a center of the belt wound area of the endless belt in the belt moving direction and by at least contacting the rotary cleaning member in a range from the belt wound area to a tensioned belt area located upstream from the belt wound area in the belt moving direction.
Abstract:
A belt device includes a belt wound around a plurality of rollers, one of the plurality of rollers, and a belt contact member disposed on the one of the plurality of rollers. The belt rotates along with the plurality of rollers. The belt contact member faces an edge of the belt in an axial direction of the one of the plurality of rollers and includes a flat portion and a separation portion. The flat portion forms a plane perpendicular to the axial direction of the one of the plurality of rollers. The separation portion is disposed outboard of the flat portion in a radial direction of the one of the plurality of rollers and has a surface located farther from the edge of the belt than the flat portion in the axial direction of the one of the plurality of rollers.
Abstract:
A belt control device includes a plurality of rollers, a belt wound around the plurality of rollers and configured to rotate along with the plurality of rollers, a belt contact member that the belt contacts when the belt moves in an axial direction of the plurality of rollers, and a shaft displacement member movable in the axial direction and including an inclined face inclined with respect to a surface of the belt to control movement of the belt in the axial direction. The belt, the belt contact member, and the shaft displacement member are configured to make a frictional force between an edge of the belt and the belt contact member greater than a frictional force between the belt contact member and the shaft displacement member.
Abstract:
The present invention relates to a cleaning device that allows the obtaining of a high level of removal performance while reducing wear between a plate-shaped elastic member and a cleaning-targeted surface moving member, while also being able to stably maintain the contact status between the surface moving member and the plate-shaped elastic member, and an image forming apparatus and a process cartridge provided therewith. A plate holder retains a blade via warping restriction means, a bearing and a support shaft engage at an engaging portion with a degree of freedom due to the presence of a gap therebetween, the plate holder is able to be displaced relative to a frame of the device body, the support shaft is arranged on the device body in the direction of surface movement of a photosensitive element downstream a normal line of the surface of the photosensitive element at a portion contacted by the blade, and a foreign object infiltration prevention member is provided on the bearing or the support shaft of the engaging portion to prevent entry of foreign objects into the gap.
Abstract:
A lubricant supplier, installable in a process cartridge or an image forming apparatus, includes a ridge line extending crosswise to a longitudinal axis of the image forming member and contacting the surface of the image forming member at a non-perpendicular angle to the longitudinal axis of the image forming member, a first face opposed to the image forming member and located upstream from a contact portion of the ridge line and the surface of the image forming member in a direction of movement of the surface of the image forming member, and a second face opposed to the image forming member and located downstream from the contact portion in the direction of movement of the surface of the image forming member. The first face and the second face intersect at the ridge line and form an obtuse angle therebetween.
Abstract:
A lubricant supplying device including a molded lubricant having a Martens hardness of about 40 N/mm2 to about 70 N/mm2 measured with a test force of 50 mN and a load-applying period of 30 seconds, a rotative member including a fibrous brush of a thickness of about 5 deniers to about 15 deniers in a circumference of a rotative supporting axis of the rotative member with a density of about 20,000 fibers to about 100,000 fibers per square inch, and configured to apply lubricant shavings of the molded lubricant to an image bearing member held in contact with a cleaning member and to remove the lubricant shavings remaining on the surface of the image bearing member, and a pressing member configured to press the molded lubricant against the rotative member at a pressure force ranging from about 2 N/m to about 12 N/m.
Abstract translation:一种润滑剂供给装置,其包括以50mN的试验力和30秒的载荷施加周期测定的马氏体硬度为约40N / mm 2至约70N / mm 2的模制润滑剂,包括纤维刷的旋转构件 在旋转构件的旋转支撑轴的圆周上具有约5旦数至约15旦尼尔的厚度,密度为约20,000个纤维至约100,000个纤维/平方英寸,并且构造成将模制润滑剂的润滑剂刮屑施加到图像上 承载构件保持与清洁构件接触并且去除残留在图像承载构件的表面上的润滑剂刮屑;以及加压构件,其构造成以约2N / m 2的压力将压缩的模制润滑剂压靠在旋转构件上 至约12N / m。
Abstract:
A lubricant supplying device including a molded lubricant having a Martens hardness of approximately 40 N/mm2 to approximately 70 N/mm2 measured with a test force of 50 mN and a load-applying period of 30 seconds, a rotative member including a fibrous brush of a thickness of approximately 5 deniers to approximately 15 deniers in a circumference of a rotative supporting axis of the rotative member with a density of approximately 20,000 fibers to approximately 100,000 fibers per square inch, and configured to apply lubricant shavings of the molded lubricant to an image bearing member held in contact with a cleaning member and remove the lubricant shavings remaining on the surface of the image bearing member, and a pressing member configured to press contact the molded lubricant with the rotative member at a pressure force ranging from approximately 2 N/m to approximately 12 N/m.
Abstract translation:一种润滑剂供给装置,其包括用50mN的试验力测量的Martens硬度为约40N / mm 2至约70N / mm 2的模制润滑剂, 负载施加周期为30秒,旋转构件包括厚度约5旦至约15旦尼尔的纤维刷,旋转构件的旋转支撑轴的周长密度为约20,000根纤维至约100,000根纤维 并且构造成将润滑剂润滑剂润滑剂施加到与清洁部件保持接触的图像承载部件上,并除去残留在图像承载部件的表面上的润滑剂刮屑;以及加压部件, 在约2N / m至约12N / m的压力下具有旋转构件的润滑剂。
Abstract:
A belt conveyor unit includes a plurality of rollers around which a belt is entrained, including a first roller, a second roller disposed opposite the first roller via the belt, and a third roller other than the first roller and the second roller, and a belt alignment device including a shaft moving device to tilt a rotary shaft of the third roller upon receiving a moving force of the belt moving in a width direction of the belt in an axial direction of the rotary shaft to adjust displacement of the belt. The shaft moving device includes an axial-direction displacement member including a slanted surface that moves to a first side in the width direction of the belt along the rotary shaft upon receiving the moving force of the belt, and a fixation member to contact the slanted surface from the first side in the width direction of the belt.
Abstract:
A cleaning device including a normally charged toner cleaning member provided in contact with a cleaning target at a contact position to remove normally charged toner from the cleaning target, a reversely charged toner cleaning member provided in contact with the cleaning target at a contact position upstream from the normally charged toner cleaning member to remove reversely charged toner from the cleaning target, and a pre-cleaning member provided in contact with the cleaning target at a contact position upstream from both the normally and reversely charged toner cleaning members to remove normally charged toner from the cleaning target. The contact position between the pre-cleaning member and the cleaning target has a width wider than a width of the contact position between the normally charged toner cleaning member and the cleaning target and a width of the contact position between the reversely charged toner cleaning member and the cleaning target.
Abstract:
An image forming apparatus including a plurality of image forming devices each including a photosensitive member, a charging device to charge a surface of the photosensitive member, and a lubricant supplying device to supply a lubricant to the surface of the photosensitive member, respectively. At least one of the plurality of image forming device includes a charging device with a different constitution from a constitution of a charging device of another of the image forming devices, and the one of the plurality of image forming devices with the different charging device includes a lubricant supplying device with a different constitution from a constitution of a lubricant supplying device of the another of the image forming devices.