摘要:
A developing device which can withstand resistance at a time a coagulated toner is scraped off is provided merely by providing a rotating shaft with a strength needed for agitating and conveying toner during normal operation. When the coagulated toner is scraped off, a large load is applied to the rotating shaft through an agitator. The rotating shaft bends, and a crank portion of the rotating shaft moves off of an axis. As a result, the crank portion is supported in a cut portion in a support plate. Therefore, strength of the rotating shaft becomes apparently greater. During normal operation, the crank portion of the rotating shaft moves out of the cut portion so as to be set in a state of non-contact with the cut portion. Therefore, no unnecessary load is applied to the rotating shaft, and the crank portion and the cut portion are not worn.
摘要:
In an image recording apparatus, the surface of an image carrier is formed of a material having a high affinity to particulates the particle size of which is smaller than toner and the surfaces of which have been treated to be hydrophobic, so that a layer of the particulates treated to be hydrophobic is retained on the surface of the image carrier.
摘要:
An image forming apparatus includes an intermediate transfer member to which a toner image is transferred, a transfer roll for transferring the toner image from the intermediate transfer member onto a recording sheet, a brush roll for removing the residual toner from the intermediate transfer member, and a toner collecting device for collecting the toner attached to the surface of the transfer roll. In the apparatus, an axial length of the intermediate transfer member is longer than that of the brush roll, and the axial length of each of the transfer roll and the toner collecting device is longer than that of the intermediate transfer member.
摘要:
A differential-pressure control device for fuel cell comprises three liquid tubs allowed to communicate with each other at their respective bottom portions through a sealing liquid having free surfaces, gas pipe means which connect the liquid tubs to gas outlets of the fuel cell respectively to introduce the gas flows from an anode, a cathode and a cell container of the fuel cell into the sealing liquid of the liquid tubs, each of the gas pipe means being formed with gas blow out section opened in the sealing liquid at the end portion thereof, the gas blow out sections having relative heights set at the value corresponding to predetermined differential pressure among the electrodes and the cell container, and gas conduit means for guiding the gas to the outside of the device from the gas chambers defined by the liquid tubs and the free surfaces of the sealing liquid respectively and located at the tops of the liquid tubs respectively. The differential-pressure control device has no mechanical movable part and makes it possible to always keep the differential pressure at a constant and, at the same time, to absorb the transient small variations in pressure of the electrodes.
摘要:
An image formation apparatus including a photoreceptor, a charger having a charger member for charging the photoreceptor, a latent image write unit for writing an electrostatic latent image onto the photoreceptor charged by the charger, and a developing device having a developer support with a magnetic field production member, for rendering visible the electrostatic latent image written by the latent image write unit with a developer. Further, the charging member of the charger is disposed under effect of a magnetic field produced by the magnetic field production member of the developing device, and the charging member is made of a nonmagnetic material.
摘要:
A cleaning unit having a brush roll with a myriad of slidingly scrubbing bristles upright relative to a rotation shaft for slidingly scrubbing the surface of a rotation body with the brush roll for removing toner deposited on the rotation body. When the brush roll is out of contact with the rotation body, the tips of the slidingly scrubbing bristles are inclined in the circumferential direction and when the brush roll is placed in contact with the rotation body, the brush roll does not rotate by itself and is rotated with rotation of the rotation body. The linear speed of the brush roll at the contact position is made different from that of the rotation body.
摘要:
A fuel cell comprises unit cells stacked through separators therebetween; each unit cell comprising a fuel electrode plate, an oxidizing agent electrode plate and a matrix between electrode plate and the oxidizing agent plate, U-shaped gas flow passages for the fuel electrode and for the oxidizing agent electrode are provided in a counter-current relation to each other with gas inlets and gas outlets for the fuel electrode and the gas inlets and the gas outlets for the oxidizing agent electrodes being provided at the opposite sides of the fuel cell, respectively, and communicated respectively with manifolds at the same opposite sides of the fuel cell. The fuel cell is simple in structure, highly reliable in fabrication, operation and maintenance, and high in gas utilization efficiency.
摘要:
A developing device includes a container, a toner holding member, a developing electric field forming unit, a layer forming unit, an electrode member, and a low-frequency electric field forming unit. The container accommodates toner. The toner holding member holds toner and transports the toner to a developing region where the toner holding member and the latent image holding member face. The developing electric field forming unit forms a developing electric field for developing a latent image held on a latent image holding member. The layer forming unit forms a toner layer on the toner holding member prior to the developing region. The electrode member faces the toner holding member. The low-frequency electric field forming unit forms a low-frequency electric field acting on residual toner between the electrode member and the toner holding member, and forms stripe-shaped projections in accordance with a period of the low-frequency electric field.
摘要:
The invention provides a developing unit, and an image forming apparatus using the same, which is capable of suppressing developer in the middle of a developing process in a developing area from remaining on the surface of an electrostatic latent image carrier when the application of oscillatory bias voltage applied to the developer carrier is stopped and of preventing the inside of the image forming apparatus and each member such as transfer member from being contaminated by the developer. The frequency of the oscillatory bias voltage is controlled so as to be higher than a normal frequency when stopping the application of the oscillating bias voltage.