| Patent application number | Description | Published |
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| 20080203645 | Image Forming Apparatus - An image forming apparatus includes a sheet feed tray for loading a recording sheet, a sheet feed roller that conveys the recording sheet toward an image forming device, a conveyor roller that is disposed downstream of the sheet feed roller in a recording sheet conveying direction and that applies a conveying force on the recording sheet, a sheet position detection device that detects a position of the recording sheet in a conveying path, and a conveyor roller control device that controls a rotation amount of the conveyor roller in accordance with the detected position of the recording sheet. The control device allows the rotation amount of the conveyor roller to become greater, when a recording sheet contacts the sheet feed roller and the conveyor roller, than a rotation amount of the conveyor roller when the recording sheet contacts the conveyor roller but might not contact the sheet feed roller. | 08-28-2008 |
| 20080237977 | Image Recording Apparatus - An image recording apparatus according to one aspect comprises: a first tray disposed within an opening of a main body to allow a recording medium to be placed thereon; a second tray disposed above the first tray, the second tray having a second end portion located on a side of the opening; a conveying unit; and a recording unit. The second tray is movable between a first posture and a second posture. When the second tray is in the first posture, a top surface of the second tray in the vicinity of the second end portion is positioned at a predetermined height relative to the first tray. When the second tray moves from the first posture to the second posture, the top surface in the vicinity of the second end portion is moved toward the first tray. | 10-02-2008 |
| 20080292382 | GUIDE DEVICES AND IMAGE PROCESSING APPARATUS - A guide device includes a pair of side guides configured to guide a sheet in a first direction, and a sliding mechanism configured to support the side guides and to slide the side guides in a second direction perpendicular to the first direction between a first position and a second position. The guide device also includes a pinion rotatably positioned at the tray between the side guides, and a plurality of rack members, in which each of the rack members is connected to and extends from a corresponding one of the side guides in the second direction, and includes a rack which engages the pinion. In addition, each of the rack members is configured to move in the second direction in response to a sliding of the side guides. The guide device further includes a plurality of slide guides positioned at the tray, in which each of the slide guides is configured to guide the rack members when the rack member move in the second direction. The guide device also includes an urging member positioned between at least one of the rack members and a one of the slide guides facing the at least one of the rack members, in which the urging member is configured to urge the at least one of the rack members in the first direction when the side guides are at a predetermined position which is closer to the pinion than the first position which corresponds to a position at which the side guides are a maximum distance from the pinion. | 11-27-2008 |
| 20090001647 | IMAGE RECORDING APPARATUS AND MEDIUM FEEDING DEVICE - According to one aspect of the invention, there is provided a medium feeding device capable of feeding a recording medium placed on a first tray. The medium conveying device includes: a frame having a first surface and allowing the first tray to be movable along the first surface, the first tray being attached to the medium feeding device at a first position of the first surface; a feeding member configured to feed the recording medium to a first conveying path when the first tray with the recording medium thereon is positioned at the first position, a cleaning member disposed at the first surface of the frame and configured to clean the feeding member when the cleaning member is uncovered by the first tray. | 01-01-2009 |
| 20090085278 | SHEET TRAY ASSEMBLY - A sheet tray assembly including: (a) a tray unit configured to accommodate sheets, and having an upper opening for allowing the sheets to be introduced into the tray unit via the upper opening; (b) a cover unit configured to cover the upper opening; and (c) a link interconnecting the tray unit and the cover unit, and having (c-1) a first end portion at which the link is connected to the tray unit and (c-2) a second end portion at which the link is connected to a proximal end portion of the cover unit. The link is movable between first and second pivot positions as a result of pivot movement of the link relative to the tray unit, whereby a posture of the link is changeable by the pivot movement, such that the second end portion of the link is placed in a first height level when the link is positioned in the first pivot position, and is placed in a second height level that is higher than the first height level when the link is positioned in the second pivot position. | 04-02-2009 |
| 20090085279 | SHEET CONVEYING DEVICE AND IMAGE RECORDING APPARATUS INCLUDING THE SHEET CONVEYING DEVICE - A sheet conveying device including: (a) a sheet discharger configured to discharge a sheet in a discharging direction; (b) a tray configured to receive the sheet discharged by the sheet discharger; (c) a stopper protruding upwardly from the tray; and (d) a guide provided by an upper surface of the tray and located on an upstream side of the stopper in the discharging direction, and configured to warp the discharged sheet such that the warped sheet has a downwardly convex shape in its cross section that is perpendicular to the discharging direction, for thereby allowing a leading end of the warped sheet to pass over the stopper and to be positioned on a downstream side of the stopper in the discharging direction. | 04-02-2009 |
| 20090194935 | PAPER FEED CASSETTE DEVICE AND IMAGE RECORDING DEVICE - The invention is directed to a paper feed cassette device to be removably installed to image recording device. The paper feed cassette device includes a paper feed cassette portion and a paper discharge tray portion that receives the recording media. The paper feed cassette portion has a first paper feed cassette portion and a second paper feed cassette portion that selectively contracts and extends by sliding along a particular direction. The paper discharge tray portion has a first paper discharge tray portion disposed above the first paper feed cassette portion and a second paper discharge tray portion that selectively contracts and expands by sliding along the particular direction. The second paper discharge tray portion selectively engages the second paper feed cassette portion, and the second paper feed cassette portion and the second paper discharge tray portion integrally slide with respect to the first paper discharge tray portion. | 08-06-2009 |
| 20100166473 | IMAGE RECORDING APPARATUS - An image recording apparatus includes a particular tray, a sheet feeder configured to feed a sheet from the particular tray to a first conveying path in a feed direction, a recording unit positioned along the first conveying path, and a driving roller positioned along a second conveying path and configured to convey the sheet, after the sheet passes the recording unit, along the second conveying path and back to the first conveying path. The particular tray includes a side guide configured to position the sheets in a widthwise direction perpendicular to the feeding direction. The side guide includes a guide member that defines at least a portion of the second conveying path and is configured to guide the sheet along the second conveying path, and a driven roller rotatably supported on the guide member and configured to pinch the sheet against the driving roller as the sheet is conveyed along the second conveying path. | 07-01-2010 |
| 20120001378 | IMAGE RECORDING APPARATUS - An image recording apparatus according to one aspect comprises: a first tray disposed within an opening of a main body to allow a recording medium to be placed thereon; a second tray disposed above the first tray, the second tray having a second end portion located on a side of the opening; a conveying unit; and a recording unit. The second tray is movable between a first posture and a second posture. When the second tray is in the first posture, a top surface of the second tray in the vicinity of the second end portion is positioned at a predetermined height relative to the first tray. When the second tray moves from the first posture to the second posture, the top surface in the vicinity of the second end portion is moved toward the first tray. | 01-05-2012 |
| Patent application number | Description | Published |
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| 20100118009 | PLASMA DISPLAY PANEL DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME - In the case of driving a plasma display panel for one field using a plurality of sub-fields each having a reset period in which reset discharge is generated in a discharge cell, an address period in which address discharge is generated in the discharge cell, and a sustain period in which sustain discharge is generated in the discharge cell, in a former period of the reset period, a rising ramp waveform voltage is applied to the scan electrodes, and a first voltage (Ve | 05-13-2010 |
| 20100321371 | METHOD OF DRIVING PLASMA DISPLAY PANEL, AND PLASMA DISPLAY APPARATUS - A method of driving a plasma display panel of the present invention, is a driving method of a display panel including plural display electrode pairs ( | 12-23-2010 |
| 20110037792 | METHOD FOR DRIVING PLASMA DISPLAY PANEL AND PLASMA DISPLAY DEVICE - An object is to provide a method for driving a PDP, which may be a super high-definition panel, and a PDP device capable of assuring the sufficient number of subfields to maintain the image quality and displaying images with the sufficient luminance. | 02-17-2011 |
| 20110057911 | PLASMA DISPLAY PANEL DRIVING METHOD AND PLASMA DISPLAY APPARATUS - A plurality of display electrode pairs are divided into two display electrode pair groups I and II. One field is divided into M (M is an integer of 2 or more) sub-fields SFL (L=1 to M) each including a wall voltage adjusting period, an address period, and a sustain period. Based on a sustain period T1 of a K-th sub-field SFK and a wall voltage adjusting period T2 positioned between the sustain period T1 and the address period of a (K+1)-th sub-field, if T1>T2, a first driving method in which the sustain period T1 and the wall voltage adjusting period T2 are set for each of the display electrode pair groups I and II is used in the sub-field SFK, and if T1| 03-10-2011 | |
| 20110084957 | PLASMA DISPLAY PANEL DRIVE CIRCUIT AND PLASMA DISPLAY DEVICE - A plasma display panel drive circuit assures a sufficient number of subfields in a high resolution panel, is low cost, and is resistant to producing brightness differences. The plasma display panel drive circuit segments plural sustain electrodes into a first sustain electrode group and second sustain electrode group, applies sustain pulses in the sustain period, and includes the following devices: a sustain pulse generating circuit that generates sustain pulses; a specific voltage application circuit that applies a specific voltage to a first electrode path to the first sustain electrode group, and a second electrode path to the second sustain electrode group, at respective specific times; and a separation switch circuit that is connected between the sustain pulse generating circuit and the first electrode path and second electrode path, and electrically isolates the sustain pulse generating circuit from either the first electrode path or the second electrode path. | 04-14-2011 |
| 20110090211 | CIRCUIT FOR DRIVING PLASMA DISPLAY PANEL AND PLASMA DISPLAY DEVICE - A simple, low cost drive circuit secures a sufficient number of subfields in a high resolution panel. The plasma display panel drive circuit groups plural sustain electrodes into first and second sustain electrode groups, and applies sustain pulses in the sustain period. The first and second sustain pulse generating circuits generate and apply sustain pulses to first and second electrode paths. First and second specific voltage application circuits apply a first specific voltage to the first and second electrode paths. The voltage selection circuit selects one of a plurality of voltages including at least a second specific voltage and a third specific voltage, and generates a selected voltage. The first and second sustain pulse generating circuits generate the sustain pulses based on the second specific voltage when the selected voltage is the second specific voltage, and when the selected voltage is the third specific voltage, apply the third specific voltage to the first and second electrode paths. | 04-21-2011 |
| 20110134105 | METHOD OF DRIVING PLASMA DISPLAY PANEL, AND PLASMA DISPLAY APPARATUS - In a driving method of a plasma display panel of the present invention, plural display electrode pairs are divided into plural display electrode pair groups and one field is divided into plural sub-fields. The length of the sustain period is compared to the length of the erase period. If the sustain period is longer than the erase period, sustain discharge and erase discharge are performed for each of the display electrode pair groups, while if the sustain period is shorter than the erase period, sustain discharge and erase discharge of one display electrode pair group are synchronized with those of another display electrode pair group. For a sub-field with a largest luminance weight or a sub-field with a highest lighting ratio, sustain discharge and erase discharge of one display electrode pair group are synchronized with those of another display electrode pair group without fail. | 06-09-2011 |
| 20110141072 | PLASMA DISPLAY PANEL DRIVING METHOD AND PLASMA DISPLAY DEVICE - The present invention provides a plasma display panel driving method and a plasma display device, each of which is capable of securing image quality and realizing an improvement of a drive margin and a reduction in power consumption even in the case of an ultra high definition panel. The present invention divides a plurality of display electrode pairs into a plurality of display electrode pair groups. For each of the display electrode pair groups, the present invention divides one field period into a plurality of sub-fields, each including an address period and a sustain period, such that the address periods with respect to the display electrode pair groups do not overlap one another, the address period being a period in which an address process of causing address discharge in the discharge cell which should emit light is carried out, the sustain period being a period in which first and second sustain pulses are applied to a scan electrode and a sustain electrode. The present invention provides the sub-field in which the cycle of each of the first and second sustain pulses is longer than 5.5 μs within such a range that a time of the sustain period does not exceed Tw×(N−1)/N, where N denotes the number of display electrode pair groups, and Tw denotes a time necessary for carrying out the address process with respect to the discharge cells corresponding to all the display electrode pairs. | 06-16-2011 |
