Abstract: The present invention has been made to provide an image forming apparatus capable of preventing a printing paper from being scratched by a peeling claw and reducing the curl amount of the printing paper to be re-fed to a lower level without adding special equipment. In an image forming apparatus 100 of the present invention, the rotational speed of a fixing and discharging roller 35 is adequately kept higher than the rotational speed of a heating roller 33 so as not to allow image stain to be produced in a printing paper PP due to scratching by a peeling claw in a fixing unit 30 and, at the same time, the rotational speed of reverse feeding rollers 37a, 37b, 37c is set slightly higher than the rotational speed of the heating roller at the time when an automatic duplex unit 170 performs paper re-feeding.

Abstract: The present invention has been made to provide an image forming apparatus capable of suppressing occurrence of a problem caused by misalignment of the feeding speed at the time of delivery and receipt in the intermediate feeding roller with a simple configuration without increasing cost. The image forming apparatus according to the present invention comprises a drive controller 101 that controls the drive speed of an intermediate feeding roller 38 that feeds a sheet to a regist roller 37 that performs skew correction for the sheet, and a feeding speed information acquisition section 102 that acquires information relating to the feeding speed of the sheet to be fed to the intermediate feeding roller 38. The drive controller 101 drives the intermediate feeding roller 38 at at least three different speeds based on the information relating to the feeding speed acquired by the feeding speed information acquisition section 102.

Abstract: The present invention has been made to provide an image forming apparatus capable of suppressing occurrence of a problem which is based on a sheet feeding speed with a simple configuration without increasing cost and changing a process speed. The image forming apparatus according to the present invention comprises: a drive controller 101 that controls the drive speed of an intermediate feeding roller 38 for feeding a sheet to a regist roller 37 for performing skew correction for the sheet; and a feeding speed information acquisition section 102 that acquires information relating the feeding speed of the sheet to be fed to the intermediate feeding roller 38. The drive controller 101 controls the drive of the intermediate feeding roller 38 with a feeding speed for duplex printing and a process speed based on the information relating to the feeding speed acquired by the feeding speed information acquisition section 102.

Abstract: An image forming apparatus comprises: an intermediate transfer belt having a belt surface on which a toner image is formed while the belt surface is moved and transferring the toner image that has been formed on the belt surface onto a sheet to be fed by a feed section; a resist roller pair that is disposed at a position on the upstream side from a transfer position at which the toner image that has been formed on the belt surface is transferred onto the sheet in the sheet feeding direction and performs a resist operation before the sheet has been fed to the transfer position as well as constitutes the feed section; a belt surface sensor that is disposed at a position on the downstream side from the transfer position in the belt surface moving direction such that the sheet moving distance from the sheet holding position between the resist roller pair to the position becomes shorter than the length of the sheet in the feeding direction and detects the sheet on the belt surface; and a control unit that allows t

Abstract: An image forming apparatus and image forming method including a low-noise mode at paper sheet reverse section to decrease a reverse convey speed of reverse conveyance by a reverse roller pair, where necessary, a reverse convey speed of reverse conveyance.

Abstract: An image forming apparatus and image forming method including a low-noise mode at paper sheet reverse section to decrease a reverse convey speed of reverse conveyance by a reverse roller pair, where necessary, a reverse convey speed of reverse conveyance.

Abstract: A main CPU effects a control to decrease a reverse convey speed of reverse conveyance by a reverse roller pair when a low-noise mode is set, a control to decrease, where necessary, a reverse convey speed of reverse conveyance by an ADU reverse roller pair, and a control to set a sheet at an optimal reverse position when a convey speed for a fixing device, the reverse roller pair or the ADU reverse roller pair is varied.

Abstract: A copier has an ejection mechanism for allowing a sheet with a formed image to be ejected via an ejection exit toward the outside of the machine. The ejection mechanism has a switch-back section for allowing the sheet which is passed through a fixing unit at a predetermined process speed to be received for the sheet to be inverted and an ejection roller pair for allowing the sheet which is sent from the switch-back section to be decelerated before the ejection exit and to be sent to the outside of the machine. In order to maintain a conveying pitch at which sheets are continuously delivered, the conveying speed of the sheet passed through the switch-back section is increased, thus shortening the inversion operation time required for the switch-back operation. That is, the conveying speed of the sheet passed through the switch-back section is made higher than the process speed.

Abstract: A copier has an ejection mechanism for allowing a sheet with a formed image to be ejected via an ejection exit toward the outside of the machine. The ejection mechanism has a switch-back section for allowing the sheet which is passed through a fixing unit at a predetermined process speed to be received for the sheet to be inverted and an ejection roller pair for allowing the sheet which is sent from the switch-back section to be decelerated before the ejection exit and to be sent to the outside of the machine. In order to maintain a conveying pitch at which sheets are continuously delivered, the conveying speed of the sheet passed through the switch-back section is increased, thus shortening the inversion operation time required for the switch-back operation. That is, the conveying speed of the sheet passed through the switchback section is made higher than the process speed.

Abstract: An automatic both-side feed unit incorporated in a copy machine automatically reverses paper sheets, each having its one side printed with an image by the printing section, and re-feeds them to the printing section. The automatic both-side feed unit has a stacker for containing, in a stacked manner, paper sheets, each having passed through the printing section and hence having its one side printed with an image, stacking rollers for introducing paper sheets into the stacker, a stacking gate for pressing, in a stacking direction, the paper sheets stacked in the stacker, a pickup roller for sequentially picking up the paper sheets, stacked in the stacker, in a reverse direction, beginning from the lowest one, and a paper re-feed conveyance path for re-feeding each paper sheet picked up by the pickup roller, to the printing section. Further, the stacker contains a pair of openable/closable side guides driven to repeatedly open and close to align both side edges of the paper sheets stacked in the stacker.

Abstract: A sheet feeding unit is provided with a feeding path, on which a cut sheet serving as an image forming medium having a predetermined size is fed. A sheet edge sensor has sensor elements separately arranged at portions, at which the edge of the cut sheet serving as the image forming medium having the predetermined size can be detected, along a direction perpendicular to the feeding direction of the cut sheet serving as the image forming medium on the feeding path in the sheet feeding unit. An image forming unit forms a predetermined image on the cut sheet serving as the image forming medium to be fed by the sheet feeding unit. An image formation correcting unit corrects image formation according to lateral misalignment of the cut sheet serving as the image forming medium based on a detection result transmitted from the sheet edge sensor when a predetermined image is formed on the cut sheet serving as the image forming medium by the image forming unit.

Abstract: There is disclosed an image forming apparatus and a method for controlling the apparatus, comprising a roller for conveying a sheet, and a sensor for detecting a time for conveying the sheet by the roller, the conveyance time of the sheet by the roller actually measured by the sensor is compared with an average conveyance time of the sheet corresponding to a sheet size, and a conveyance speed of the sheet by the roller is corrected so as to set the conveyance speed of the roller to be constant based on a comparison result.

Abstract: A sheet feeding unit is provided with a feeding path, on which a cut sheet having a predetermined size is fed. A sheet edge sensor has sensor elements separately arranged at portions, at which the edge of the cut sheet can be detected, along a direction perpendicular to the feeding direction of the cut sheet. An image forming unit forms a predetermined image on the cut sheet. An image formation correcting unit corrects image formation according to lateral misalignment of the cut sheet based on a detection result transmitted from the sheet edge sensor when a predetermined image is formed on the cut sheet.

Abstract: The present invention relates to an image forming apparatus and an image forming method, in which an image on an original document is read with the image divided into plural areas, a copy image is formed by synthesizing images of the divided areas, and the copy image is printed on a surface of a target image forming medium.

Abstract: In a personal adornment band comprising a plurality of links (2) each having a pair of legs (4a, 4b), a recess (5) formed between the legs, and a projection (6) formed on the other side of the recess, the projection of each link being inserted in the recess of the adjacent link, and a connecting pin (3) being inserted into holes formed in the connecting legs and the projection of the links for connecting the links, each of the links (2) has a pin locking cylinder (7) fixed in one of the holes thereof, the connecting pin (3) has a manipulating portion (14a) slidable in the axial direction thereof, a radially projecting engaging lug (17) formed on the manipulating portion, and a spring for outwardly urging the manipulating portion, the pin locking cylinder (7) having a guide surface (21) formed at the connecting pin inserting end, a guide groove (22) axially extending from the guide surface, an engaging hole (23) formed at the inner end of the guide groove in the circumferential direction, and a stopper lug (24