Abstract: According to one embodiment, an image processing apparatus includes a document table, a document feeder, an opening sensor, an image reading unit, an operation unit, a first memory, a second memory, and a control unit. An original is placed on the document table. The document feeder can open and close an upper part of the document table and conveys the original. The opening sensor detects whether the document feeder opens the document table. The operation unit receives the input of information indicating processing content for the image data. The first memory stores first configuration. The second memory stores second configuration corresponding to the information input to the operation unit. The control unit changes, if the opening sensor detects the opening of the document table, the second configuration stored in the second memory to the first configuration.

Abstract: An interlock switch is switched according to the movement of a relay reversal unit rather than the movement of a front cover. The relay reversal unit is connected to a driver substrate by a drawer connector. The change-over of the interlock switch according to the movement of the relay reversal unit is turned off when margin time elapses after a cover detection switch is turned off.

Abstract: A paper feeding cassette includes: a cassette case configured to store sheets; a sheet tray on which the sheets are stacked, the sheet tray being rotatably attached to the cassette case; a push-up member configured to push up the sheet tray and rotate the sheet tray in one direction when driving force is input and release the push-up of the sheet tray to allow rotation of the sheet tray in the other direction when the input of the driving force is interrupted; and a buffer member configured to be nipped by the cassette case and the sheet tray and elastically deformed when the sheet tray rotates in the other direction. The buffer member is located, when viewed from a stacking direction of the sheets, in an area closer to a rotation axis of the sheet tray than a distal end of the sheet tray that is most distant from the rotation axis in the sheet tray.

Abstract: To provide an image forming apparatus that can highly accurately position and convey, even if an inter-sheet distance of sheets to be conveyed is reduced, the sheets from registration rollers to a transfer position when a toner image on an image bearing member moving at process speed is transferred onto the sheet in the transfer position. A sheet fed from a paper feeding cassette by a pulse-motor driven paper feeding roller is conveyed to pulse-motor driven registration rollers by pulse-motor driven conveying rollers. When the sheet is conveyed to the transfer position according to restart of the registration rollers, the sheet is conveyed by the registration rollers at sheet conveying speed different from the process speed before the leading end of the sheet reaches the transfer position and is conveyed at the process speed after that.

Abstract: A technique in an image forming apparatus in which the front and back sides of a sheet are reversed by using a reversal conveyance path is provided for causing the sheet to wait such that the sheet is not damaged when a unit for conveying the sheet to the reversal conveyance path is pulled out for the purpose of clearing a jam or the like. A roller for conveying the sheet is controlled such that the sheet to be turned back and directed into the reversal conveyance path is caused to wait until the sheet can be conveyed into the reversal conveyance path. As a standby position of the sheet while the sheet is caused to wait, a position is set such that an upstream end portion in the second conveying direction of the sheet to be directed into the reversal conveyance path does not extend for a predetermined length or longer into another conveyance unit adjacent to the intermediate conveyance unit upstream from the intermediate conveyance unit in the second conveying direction.

Abstract: To provide, in an image forming apparatus in which a part of a sheet conveying path for reversing a sheet is formed as a unit to be extractable to the outside of the apparatus, a technique for preventing damage to the sheet involved in extracting operation for the extractable unit. In an image forming apparatus that reverses a sheet conveyed in a first conveying direction for leading the sheet to a predetermined discharge tray side by switching back the sheet in a second conveying direction for leading the sheet into a reversing and conveying path, if a sheet is simultaneously detected by both a first sensor that detects a sheet present in an intermediate conveying unit and a second sensor that detects a sheet present in another sheet conveying unit adjacent to an upstream side in the second conveying direction of the intermediate conveying unit, it is determined that the sheet is present across a boundary between the intermediate conveying unit and the other sheet conveying unit.

Abstract: In an image transferring apparatus of the invention, a relay unit, which is provided in a main body frame and includes a conveyance switching mechanism to eject a sheet on which an image is fixed by a fixing section to a sheet ejection section or to switch back the sheet in the middle of ejection, can be pulled out, and a automatic duplex unit to guide the switched back sheet to an image forming section is mounted to the main body frame to be capable of being detached. An intermediate unit to guide the sheet switched back by the relay unit, together with the fixing section, is fixed and placed in the main body frame. The intermediate unit is provided with a guide member to be capable of being opened and closed between a guide position for the switched back sheet and an open position opposite to the guide position.

Abstract: According to an aspect of the invention, an image forming apparatus includes, an image forming section which forms an image on a sheet-like recording medium, a conveying path through which the recording medium passes, a conveying section which conveys the recording medium along the path in a conveying direction and has a reverse conveying portion which reversely conveys the recording medium in a direction opposite to the conveying direction, a main body, a first medium holding section which is disposed on the main body to hold the recording medium discharged from a first discharge port, a second medium holding section which holds the recording medium discharged from a second discharge port disposed above the first discharge port of the main body, and a third medium holding section which is disposed below the second medium holding section to hold the recording medium reversely conveyed by the conveying section.

Abstract: Provided is an image forming apparatus including: a first sensor which is provided on a transportation path of a sheet and detects a first passage time of the sheet; a second sensor which is provided at a position different from the position of the first sensor in a transportation direction of the sheet and a direction perpendicular to the transportation direction and detects a second passage time of the sheet; a skew determination unit which determines a skew amount of the sheet based on the first passage time detected by the first sensor and the second passage time detected by the second sensor; and a correction control unit which controls correction of a skew of the sheet on the basis of the skew amount determined by the skew determination unit.

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 least three different speeds based on the information relating to the feeding speed acquired by the feeding speed information acquisition section 102.

Abstract: An image forming apparatus is provided. The image forming apparatus is 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 costs. The image forming apparatus includes a drive controller that controls the drive speed of an intermediate feeding roller that performs skew correction for the sheet, and a feeding speed information acquisition section that acquires information relating to the feeding speed of the sheet to be fed to the intermediate feeding roller. The drive controller drives the intermediate feeding roller at least three different speeds based on the information relating to the feeding speed acquired by the feeding speed information acquisition section.

Abstract: An image forming apparatus including a drive unit that drives a drive control unit that supplies a first drive current to the drive unit so as to acceleratingly drive an intermediate feeding roller, and supplies a current that is smaller than the first drive current so as to uniformly drive the intermediate feeding roller, and a timing determination unit that determines the timing of supplying a current smaller than the first drive current to uniformly drive the intermediate feeding roller after supplying the first drive current to the drive unit to acceleratingly drive the intermediate feeding roller, wherein in case the timing determination unit determines that the timing to acceleratingly drive the intermediate feeding roller comes to an end, the drive control unit supplies the first drive current to the drive unit for a time period prolonged by a predetermined time period.

Abstract: An image forming apparatus is provided that prevents paper from being scratched by a peeling claw and reducing the curl amount of the paper to be re-fed to a lower level. The rotational speed of a fixing and discharging roller is adequately kept higher than the rotational speed of a heating roller so as not to allow image stain to be produced in a paper due to scratching by a peeling claw in a fixing unit. Simultaneously, the rotational speed of reverse feeding rollers is set slightly higher than the rotational speed of the heating roller at the time when an automatic duplex unit performs paper re-feeding. As a result, “swelling” of the paper occurring in a reverse gate is eliminated by the reverse feeding roller which is rotated at a speed higher than the heating roller, thereby greatly reducing “curl amount” remaining in the paper due to the “swelling”.

Abstract: To provide a technique capable of contributing a reduction of user's uncomfortable feeling caused by noise while maintaining double-sided productivity in an intra discharge type image forming apparatus that uses an ADU to perform image forming processing for both sides of a sheet.

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: The present invention has been made to provide an image forming apparatus and a sheet feeding method capable of feeding a sheet without any problem even in the case where the rear end of the sheet is held between separating rollers at the time when the sheet is fed for a transfer process after aligning control. An image forming apparatus comprises a drive controller 101 that controls the drive of feeding rollers disposed on the upstream side in the feeding direction relative to an intermediate feeding roller that feeds a sheet to a regist roller that performs skew correction for the sheet; and a timing determination section 102 that determines the timing at which the regist roller starts feeding the skew corrected sheet after the skew correction. When the timing determination section 102 determines that a predetermined timing for the regist roller to start feeding the skew corrected sheet has come, the drive controller 101 drives the feeding rollers by a predetermined time from the predetermined timing.

Abstract: The present invention provides an image forming apparatus, a sheet feeding method, and a sheet feeding program that can suppress the occurrence of failure in feeding sheets without preventing reduction of cost and miniaturization of the device.

Abstract: The present invention has been made to provide an image forming apparatus, a sheet feeding method, and a sheet feeding program capable of eliminating the problem that the leading end of a sheet hits against the bottom portion of a reverse feeding path and contributing to an increase in sheet feeding efficiency without adding special parts and preventing the miniaturization of the entire apparatus. An image forming apparatus comprises a drive control section 101 that controls drive of feeding rollers that guide a sheet to a reverse feeding path and then feed the sheet in a switchback manner; and a sheet information acquisition section 102 that acquires information relating to the sheet size in the feeding direction of a sheet to be switched back.

Abstract: The present invention provides an image forming apparatus, a sheet feeding method, and a sheet feeding program that can prevent adverse effect brought about when the temporary stop position of a sheet deviates from a predetermined stop position. The present invention provides an image forming apparatus which includes a drive control unit 101 that controls the operation of driving feeding rollers for feeding sheets to a regist roller that performs skew correction for sheets being fed, and a retention state information take-in unit 102 that takes in information concerning the retention state of a sheet that is retained by the feeding rollers to be made to stand by temporarily, wherein the drive control unit 101 resumes the sheet feeding by the feeding rollers under predetermined timing based on information concerning the retention state of a sheet that is taken in by the retention state information take-in unit 102.