Patent application number | Description | Published |
20100034571 | SHEET CONVEYOR, IMAGE FORMING APPARATUS HAVING SHEET CONVEYOR, AND SHEET CONVEYING METHOD - A sheet conveyor includes a first roller and a second roller pressurized to the first roller to hold and convey a sheet, wherein when the sheet is held between the first roller and the second roller, the first roller and second roller are separated at a space equivalent to a thickness of the sheet. The sheet conveyor has a pressurizing delay mechanism configured to bring slowly the first roller and the second roller into contact with each other after the sheet is conveyed from the first roller and the second roller. | 02-11-2010 |
20110148972 | RECORDING APPARATUS AND RECORDING METHOD - According to an embodiment, a recording apparatus includes at least one line-type recording head, a circulation path, and plural roller pairs. The recording head performs multi-pass image formation. The circulation path includes a first path facing the recording head, and a second path to connect a first end side to a second end side of the first path. The plural roller pairs exist in the second path. | 06-23-2011 |
20110279495 | INK JET RECORDING APPARATUS - According to one embodiment, an ink jet recording apparatus includes an ink jet head, a first tank arranged above the ink jet head and configured to store ink to be supplied to the ink jet head, a first tank valve that opens and closes in order to switch the inside of the first tank to be opened to or shut off from the atmosphere, a second tank arranged below the ink jet head and configured to store the ink collected from the ink jet head, a second tank valve that opens and closes in order to switch the inside of the second tank to be opened to or shut off from the atmosphere, a pipe configured to connect the ink jet head, the first tank, and the second tank and form a part of a circulation shape, a pump provided in the pipe between the first tank and the second tank, a passive pressure adjusting device connected to the second tank, arranged below the first tank, and configured to generate negative pressure using the gravity, and a third tank valve provided between the second tank and the passive pressure adjusting device. | 11-17-2011 |
20110292149 | CHARGING ROLLER, CHARGING UNIT USING THE SAME, AND IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes a to-be-charged member, a charging roller, a feeding mechanism, a recording head portion, and a discharge mechanism. The to-be-charged member includes a dielectric body that rotates in a predetermined direction. The charging roller is disposed to face the to-be-charged member and includes a conductive roller body and insulating convex portions which has electric resistance greater than that of the roller body, is disposed in an area of the roller body in an axis direction of the roller body with intervals therebetween, and protrudes in a radial direction of the roller body. The feeding mechanism feeds a sheet between the to-be-charged member and the charging roller. The recording head portion forms an image on the sheet. The discharge mechanism discharges the sheet on which recording was performed by the recording head portion. | 12-01-2011 |
20120038727 | INKJET PRINTER AND INK EJECTING METHOD - According to one embodiment, the inkjet printer includes an endless device which has a circumferential surface for adsorbing a sheet, an inkjet head for ejecting ink, a tray, and a controller. The tray is moved from a home position toward the inkjet head along a circumferential surface of the endless device, using the tray moving mechanism. The tray is inserted to a clearance between the circumferential surface of the endless device and the inkjet head. The inkjet head ejects ink toward the tray if the tray moves to a position facing the inkjet head. | 02-16-2012 |
20120069081 | CONVEYING DEVICE OF RECORDING MEDIUM AND IMAGE FORMING APPARATUS - According to one embodiment, the image forming apparatus has an endless device with a circumferential surface, a laminated cover which is disposed at the circumferential surface of the endless device, a rotation mechanism which rotate the endless device, a supply mechanism which supplies a recording medium to the endless device, a charging roller, a recording head unit, and a discharge mechanism. The laminated cover includes a metal layer and a dielectric layer. The metal layer has both end portions in the circumferential direction, and both side portions. The dielectric layer also has both end portions in the circumferential direction and both the side portions. At least a part of both the end portions and both the side portions of the dielectric layer has extended regions which protrude from a circumferential edge of the metal layer. | 03-22-2012 |
20120069114 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - According to one embodiment, an image forming apparatus includes a retaining roller, a nipping device, a retaining device, an image forming head, and a controller. The retaining roller retains a recording medium and rotates. The nipping device is capable of operating to open and close and holds the recording medium between the nipping device and the surface of the retaining roller to mechanically retain the recording medium. The retaining device retains the recording medium on the surface of the retaining roller. The controller controls, on the basis of a condition for use of the recording medium, the nipping device to nip the recording medium between the nipping device and the surface of the retaining roller. | 03-22-2012 |
20120082473 | TRANSFER BELT UNIT FOR IMAGE FORMING APPARATUS INCLUDING A STEERING ROLLER TO CORRECT MEANDERING - In the transfer belt unit according to an embodiment of the present invention, rotation of a rear-side detection roller or a front-side detection roller rotated in contact with ribs of a transfer belt is transmitted to a steering roller via a lead screw to tilt the steering roller and control meandering of the transfer belt. | 04-05-2012 |
20120092431 | RECORDING MEDIUM CARRYING DEVICE, IMAGE FORMING APPARATUS, AND RECORDING MEDIUM CARRYING METHOD - According to one embodiment, an apparatus includes a leading end gripper and a trailing end gripper provided on a drum. The leading end gripper is moved by a leading end gripper driving mechanism. The trailing end gripper switches between a standby position where this gripper is stopped relatively to the rotating drum and a grip position where this gripper rotates with the drum. The leading end gripper and a recording medium pass through an inside of the trailing end gripper stopped in the standby position. If a trailing end of the recording medium reaches the trailing end gripper, the trailing end gripper is released and switches to the grip position. Thus, the trailing end of the medium is held on the drum by the trailing end gripper. The trailing end gripper moves in a rotating direction of the drum while continuing nipping the trailing end of the medium. | 04-19-2012 |
20120098912 | CONVEYING DEVICE OF RECORDING MEDIUM AND IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes, an endless device which has a circumferential surface, a laminated cover which is arranged onto the circumferential surface of the endless device in an overlapping manner, a rotation mechanism which rotates the endless device, a supply mechanism which supplies a recording medium to the endless device, a recording head unit, and a discharge mechanism. The laminated cover include a metal layer which has the inner surface which comes into contact with the circumferential surface of the endless device, and a dielectric layer which comes into contact with the metal layer. The laminated cover includes a hem portion which is formed to be folded back at least at a part of a circumferential edge region of the laminated cover, with the dielectric layer as the outside of the bending. | 04-26-2012 |