摘要:
An color image forming apparatus is disclosed which forms an electrostatic latent image on a photosensitive drum with the use of a charger and laser beam for light exposure, develops the electrostatic latent image into a visible image by a developing unit with the use of a liquid developer with a coloring material of very fine particles mixed in an insulating solvent and transfers the visible image to a recording sheet with the use of a transfer roller with a heater reincorporated therein. In this color image forming apparatus, a partition wall is provided for covering the transfer roller as a solvent vapor producing source to prevent the diffusion of a solvent vapor, and a cooling panel constituting at least part of a surface of the partition wall opposite to the transfer roller is cooled to a temperature lower than an ambient temperature within the partition wall, whereby it is possible to suppress the diffusion of the solvent in the liquid developer to a minimal possible level and efficiently collect the solvent for recovery and to achieve a stable developing characteristic.
摘要:
A photosensitive device has a cylinder, a photosensitive sheet slidably wrapping outer surface of the cylinder, and a feeding roller in the cylinder. The feeding roller feeds the photosensitive sheet to the outer surface of the cylinder sequentially. The photosensitive device also has a winding roller in the cylinder. The winding roller rolls the photosensitive sheet sequentially from the outer surface of the cylinder. The photosensitive device also has an adjusting member for adjusting contact force emerged between the cylinder and the photosensitive sheet.
摘要:
According to one embodiment, a checkout apparatus includes a counter, a scanner, a register terminal, and a recognition unit. The counter is embedded at least one weight meter and to be put at least one of target objects. The scanner reads codes attached to the target objects. The register terminal settles payment for the target objects. The recognition unit identifies the target objects by referring to working property category information pieces indicating a category in scan work for the target objects, based on the codes read by the scanner, and obtains signals that represent states each including one of steady work and unsteady work for an operator, based on a time history of a weight of the target objects.
摘要:
In liquid-developing image formation, a ghost image caused by the contact between a photosensitive member and an absorbing roller to collect a surplus liquid developer is prevented by preventing occurrence of a speed difference (relative speed) between a photosensitive member and a porous member (an absorbing roller) and by keeping an optimum pressing force from a porous member to a visible image on a photosensitive member.
摘要:
To remove a carrier liquid from a toner image before transfer on a photosensitive drum, a wet electrophotographic device of the present invention includes a first slit nozzle which blows airflow of a first velocity onto a surface of the photosensitive drum after image formation, a second slit nozzle which is positioned on a downstream side more than the first slit nozzle and which blows airflow of a second velocity higher than that of the airflow supplied from the first slit nozzle onto the surface of the photosensitive drum, and an aperture portion which introduces a reverse airflow generated by the airflow from the second slit nozzle to the first slit nozzle side between both nozzles.
摘要:
An ink-jet recording apparatus which includes a recording medium for carrying an electrostatic image, an ink-ejecting section opposing the recording medium and located in non-contact state with respect to the recording medium medium, and having an ink holding section for holding ink and an opening section for ejecting ink, at least one counter electrode located in the ink-ejecting section to be immersed in ink. The ink is ejected by virtue of an electric field between the electrostatic image formed on the recording medium and the counter electrode.
摘要:
In an apparatus, a pile of sheets is mounted on a support base, and is brought into contact with a guide. A high-frequency vibration is applied to the sheets from a vibrating part which is pressed to the pile. A sheet on the uppermost surface of the pile is transferred by a feed roller. The guide has a guide end defining a guide entrance between the guide end and the feed roller, through which the sheets is passed. The guide end is arranged substantially in a virtual plane including a contact position at which the vibrating part is in contact with the uppermost surface of the pile, and substantially parallel with the sheets. A separation section for separating sheets from each other is arranged behind the entrance, and an air blow-off section for blowing air into the side of the pile is provided in the vicinity of the entrance.
摘要:
A pile of sheets is held by a separator/feeder and a vibrator is brought into contact with a first region of the pile with a first contact pressure. High frequency vibrations are applied from the vibrator to the sheet. A takeout mechanism is brought into contact with and pressed against the pile with a second contact pressure and sheets are taken out one by one from the top surface of the pile by the takeout mechanism. A first sensor detects the position of the vibrator and outputs a first detection signal, while a second sensor detects the uppermost surface of the pile and outputs a second detection signal. A control section selects first and second contact pressures according to the first and second detection signals and maintains the first and second contact pressures.
摘要:
In liquid-developing image formation, a ghost image caused by the contact between a photosensitive member and an absorbing roller to collect a surplus liquid developer is prevented by preventing occurrence of a speed difference (relative speed) between a photosensitive member and a porous member (an absorbing roller) and by keeping an optimum pressing force from a porous member to a visible image on a photosensitive member.
摘要:
In a belt driving mechanism, an endless belt is wrapped around a driving roller and a driven roller. The endless belt runs between the driving roller and the driven roller. The axis of the driven roller is placed so as to form a certain angle of torsion to a plane containing opposite ends of the driving roller and a middle point between opposite ends of the driven roller. Rotation of the driven roller is decelerated or stopped with the driving roller keeping on rotating to run the endless belt. Resistance is thus offered to between the endless belt and the driven roller while keeping the driving roller rotating to run the endless belt, so that the endless belt is slipped on the driven roller.