Abstract: A conveyance apparatus includes a bearing rotator, an entrance rotator, an exit rotator, a first driver circuit, a downstream conveyor, a second driver circuit, and a recording medium detector. The entrance rotator receives a recording medium at a first position. The downstream conveyor receives the medium at a second position. As a process of removing the medium, the first driver circuit starts rotation operation after the second driver circuit starts driving the downstream conveyor and rotates the rotators for not less than a period of time for the medium to be conveyed from the first position to the second position. The second driver circuit continues driving the downstream conveyor for not less than a period of time for the medium to be conveyed from the second position to a position at which the medium is detected after the rotation operation of the first driver circuit is stopped.

Abstract: An image forming apparatus includes an operation panel, a document transport device, an image reader, and a control device. The document transport device transports a source document while a moving document reading job is being performed. The image reader reads the source document being transported by the document transport device. The control device suspends the moving document reading job, when jam occurs during the moving document reading job, and displays, on the operation panel, a preview image of the non-blank page that has been read last in the period from the start of the moving document reading job to the suspension thereof, when the page last read in the period from the start of the moving document reading job to the suspension thereof is the blank page, and the number of blank pages read is two or more.

Abstract: An image sending apparatus includes a first authentication unit configured to perform processing for first authentication to authenticate a user, a storage unit configured to store authentication information used when the first authentication unit authenticates the user, a sending unit capable of sending image data by a plurality of kinds of sending methods, a destination setting unit configured to set a destination to which the sending unit sends the image data, a second authentication unit configured to perform processing for second authentication required for the sending unit to send the image data to the destination set by the destination setting unit, and a determination unit configured to determine whether to use the authentication information stored in the storage unit when the second authentication unit performs the processing for the second authentication, based on the sending method by which the sending unit sends the image data to the destination.

Abstract: An image forming apparatus includes a cassette that has a placement plate on which a sheet is set, a paper feed roller, a raising/lowering mechanism that raises and lowers the placement plate, a print unit, a sheet sensor, an upper limit sensor and a control unit. The control unit recognizes, based on an output of the sheet sensor, that the sheet supplied from a paper feed device reaches an installation position of the sheet sensor. The control unit detects, based on an output of the upper limit sensor, that the paper feed roller reaches a predetermined upper limit position or that the raising/lowering mechanism raises the placement plate such that the sheet reaches a feed position and uses the sheet sensor and the upper limit sensor so as to detect that the paper feed device encounters overload.

Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet, an intermediate processing tray where sheets conveyed through a first conveyance path are stacked as a sheet bundle, a sensor disposed at a second conveyance path to detect a conveyed sheet bundle, and a stacking tray in which sheets discharged through a discharging path diverging from the first conveyance path are stacked. In response to a sensor detected paper jam, a control unit determines the intermediate processing tray as the discharging destination for a sheet among the remaining sheets, and determines the stacking tray as the discharging destination for a sheet among the remaining sheets. After the paper jam is cleared, the control unit causes execution of bookbinding and cutting for a sheet bundle including the remaining sheets stacked in the intermediate processing tray.

Abstract: An image forming apparatus includes: an operating unit configured to display an operation screen, and accept a user operation; a conveying unit configured to convey a sheet along a path to one of a plurality of discharge destinations; an image forming unit configured to form an image on the sheet moving in the path; and a control unit configured to identify a conveyance destination, and cause the conveying unit to convey the sheet to the conveyance destination, wherein, when a jam in the path is detected, the control unit causes the conveying unit to suspend sheet conveyance, and causes the operating unit to display a select screen for selecting a purge destination and accept a purge destination selected by a user, and the control unit identifies a sheet to be moved to the purge destination, and causes the conveying unit to convey the sheet to the purge destination.

Abstract: A recording device includes: a recording section that records an image on a recording medium; a detecting section that detects an image defect in the image recorded by the recording section; and a repair recording section that is provided separately from the recording section and that performs repair recording for the image defect detected by the detecting section. With such a configuration of the recording device, an image defect in the image recorded on a recording medium is repaired.

Abstract: An image forming apparatus has an image forming unit that forms an image on a sheet, a fixing unit that performs fixing of the sheet on which the image is formed, a first conveyance route that has a reverse conveyance route and a second conveyance route that does not pass the reverse conveyance route, and a control unit that performs first control for conveying a previously printed sheet which is printed previously via the first conveyance route and second control for conveying a subsequently printed sheet which is printed subsequently via the second conveyance route, and exerts control to feed the previously printed sheet and the subsequently printed sheet in an overlapped manner after the first conveyance route and the second conveyance route merge together.

Abstract: Provided is an image forming system including a plurality of discharge units provided for discharging a recording material, an abnormality detection unit which detects conveyance abnormality of a recording material in a conveyance path in the image forming system, a position detection unit which detects a position of a user who performs a task of removing the recording material having caused the conveyance abnormality detected by the abnormality detection unit, a selection unit which selects a discharge unit, which is able to discharge a recording material remaining on a conveyance path of an upstream side and is nearest the position of the user detected by the position detection unit, from the plurality of discharge units, and a purge processing unit which allows the recording material remaining on the conveyance path of the upstream side from the discharge unit selected by the selection unit to be discharged from the discharge unit.

Abstract: A method for media jam clearing includes detecting a media jam with sensor in the printer, in which the media jam comprises a sheet of media stuck in a media path of the printer. The method further includes monitoring for user action that alters the mechanically alters the state of the printer and detecting a user action that mechanically alters the state of the printer. In response to detection of the user action, the printer automatically attempts to clear the media jam.

Abstract: An image forming apparatus includes an image forming section that forms an image, a transport path section along which a recording material that is yet to undergo or has undergone image formation performed by the image forming section is transported, a transport unit that is provided in the transport path section and transports the recording material while nipping the recording material, an operated portion that is operated by a user and activates the transport unit such that the recording material is removed from the transport unit, and a notification unit that notifies a completion of the operation of the operated portion on the basis of a position of the recording material that is removed from the transport unit by the user's operation of the operated portion.

Abstract: When implementing a purge processing for collecting a retention paper sheet remaining within an image forming system so as to eject the collected retention paper sheet to a plurality of paper sheet ejecting trays of a paper sheet ejecting section, based on paper sheet information regarding a paper sheet feeding tray from which each of the retention paper sheets is fed, a control section controls the paper sheet ejecting section so as to eject the retention paper sheets onto the plurality of paper sheet ejecting trays, in such a manner that a first retention paper sheet fed from a specific paper-sheet feeding tray is ejected separately from a second retention paper sheet fed from a paper sheet feeding tray other than the specific paper-sheet feeding tray.

Abstract: A printing apparatus comprising an image forming system, a sheet-feeding system, a sheet-transporting system, a sheet-controlling device, a sheet-detection device, a first driving system, a second driving system and a controller is provided. The sheet-controlling device and the sheet-detection device are disposed between the sheet-feeding system and the sheet-transporting system. The sheet-controlling device controls an entry of a sheet into the sheet-transporting system. The first driving system drives the sheet-controlling device, and the second driving system drives a transporting mechanism of the sheet-transporting system. The controller upon receiving an error signal from the sheet-detection device signals the sheet-controlling device to inhibit the entry of the sheet into the sheet-transporting system and signals the transporting mechanism to continue its operation. A duplex printing method is also provided.

Abstract: A paper conveying apparatus includes a sound signal generator for generating a sound signal, a sound jam detector for determining whether a jam has occurred based on the sound signal, a control module for stopping conveyance of a paper when the sound jam detector determines that the jam has occurred, a paper state detector for detecting a state of the paper, and a recovery processing module for performing recovery processing which resumes conveyance of the paper in accordance with a content of detection of the paper state detector when the sound signal generator outputs a predetermined sound signal after stopping conveyance of the paper by the control module.

Abstract: A printer includes a printing unit configured to print on a print medium while transferring the print medium by a first transfer section, a transfer unit located downstream the printing unit in a transfer route and configured to transfer the print medium by a second transfer section, and a controller configured to control the printing unit and the transfer unit. The controller is configured to stop the first transfer section prior to the second transfer section upon detection of a jam of the print medium.

Abstract: In a printing system capable of supplying a sheet of a job having undergone print processing by the printing unit of a printing apparatus to a post-processing unit capable of executing at least a specific type of post-processing among a plurality of types of post-processes, when the target job requires the specific type of post-processing, the printing apparatus is inhibited from executing print processing of the job without explicitly determining a sheet necessary for the print processing of the job by a user using a user interface unit. When the target job does not require the specific type of post-processing, the printing apparatus is permitted to execute print processing of the job without explicitly determining a sheet necessary for the print processing of the job by the user using the user interface unit.

Abstract: When performing a purging process in which remaining sheets remaining in the image forming system are gathered and ejected to any of trays in an ejection section, any of the trays other than a valid sheet tray to which a sheet having a normally formed imager has been ejected is set as a purge tray which is a tray to which the remaining sheets are to be ejected by the purging process, and the ejection section is controlled to eject the remaining sheet to such purge tray

Abstract: An image forming apparatus and a job management method thereof are provided. The job management method includes detecting an occurrence of an error during a processing of a job, and upon detecting the occurrence of the error, providing information about one or more jobs related with the error from among a list of jobs. As a result, it is possible to manage the jobs related with an error and more convenient job management is provided.

Abstract: An image forming apparatus including at least one option cassette, and a paper jam handling method performed in the image forming apparatus are provided. The paper jam handling method includes the operations of detecting whether paper jam occurs in the image forming apparatus, checking whether paper sheets exist on a transfer path of the image forming apparatus and on a transfer path of the option cassette, when the paper jam is detected, and leaving the paper sheet on the transfer path of the option cassette as it is and discharging the paper sheet caught on the transfer path of the image forming apparatus. Accordingly, paper damage or paper consumption may be prevented by not discharging a paper sheet caught on a transfer path of at least one option cassette during paper jam.

Abstract: A print control apparatus having a decision unit, a print control unit, and a determination unit. The decision unit decides a print order for duplex printing on a continuous sheet. The print control unit causes the print unit to execute a continuous print of first face images on a first face and second face images on a second face after completion of the print on the first face in accordance with the decided print order. In a case where the determination unit determines that an interruption factor occurs before the completion of the print on the first face, the print control unit performs switches to a print on the second face and to cause the print unit to execute a print of any second face image that is predetermined to be arranged on the second face relative to any first face image already printed on the first face.

Abstract: The invention relates to a method for controlling the transport of sheets through a printing apparatus, in particular a digital printing apparatus. In the method for controlling the transport of sheets through a printing apparatus, a print queue is set by assigning images to respective sheets, prior to feeding the respective sheets into the transport arrangement. The sheets are then fed into the transport arrangement, and it is detecting whether a double sheet feeding has occurred. Superposed double sheets are deflected to a double sheet box, which is arranged upstream of the at least one print module, and at least those sheets following the superposed double sheet in the transport arrangement, for which an image has already been assigned and which are not in a duplex path, are guided to a waste box, which is arranged downstream of the at least one print module. Finally, the print queue is automatically reset and printing is continued without stopping the printing apparatus.

Abstract: The present invention provides an image forming apparatus including: an intermediate transfer member having an elastic layer, to which a toner image on an image bearing member is transferred at a primary transfer portion; a transfer device configured to transfer the toner image on the intermediate transfer member to a recording material at a secondary transfer portion; a cleaning unit configured to be in contact with the intermediate transfer member and clean the intermediate transfer member; and a detection device configured to detect the position of the recording material stopped in the image forming apparatus due to conveyance failure. In a returning operation including driving control of the intermediate transfer member performed after the stopped recording material has been removed, the driving control of the intermediate transfer member is performed according to the detection result of the detection device.

Abstract: Disclosed is a printer for performing a process on the basis of received print data, the process including feeding a print sheet for a page, printing on the fed sheet, and ejecting the printed sheet. The printer includes a controller that allows a sheet for a succeeding page to be ejected without being printed when allowing the sheet for the succeeding page to be fed before completion of the process on another sheet for a preceding page which is in progress and then recognizing the end of a print data block corresponding to the succeeding page.

Abstract: A procedure through which a device is started up when power is introduced is fixed. Consequently, if there is a job that has been suspended owing to cut-off of power the length of time from re-introduction of power to resumption of the suspended job is too long. In order to solve this problem, an image processing apparatus, which enables execution of a plurality of jobs by starting up a plurality of software modules, is so adapted that in a case where a job being executed is suspended, execution information indicating status of execution of the job at the time of suspension is stored. The suspended job is resumed based on the execution information. Specifically, in resuming the suspended job, a group of software modules relating to the suspended job is started up before other software modules.

Abstract: Image data is stored in a RAM, and when recording media are fed from a paper feed tray for a time interval longer than a predetermined time interval, a CPU causes an image forming section to execute a correction process.

Abstract: When jam occurs in one of a tandem conveyance path and bypass conveyance path, a sheet is automatically discharged from the conveyance path where no jam has occurred. A sheet retained at the upstream side with respect to a first fixing device in a sheet conveying direction is automatically discharged to the outside of an image forming apparatus by using the conveyance path where no jam has occurred. After the automatic discharging of the sheet is completed, a user is prompted to remove the jammed sheet.

Abstract: Disclosed is an image forming apparatus that includes a recording medium feeding unit that feeds a recording medium to a predetermined conveyance path; a conveyance unit that conveys the recording medium fed from the recording medium feeding unit on the conveyance path; a conveyance status detection unit that detects a conveyance status of the recording medium placed on the conveyance path; a control unit that controls operations of the recording medium feeding unit, the conveyance unit, and the conveyance status detection unit; and an accommodation unit that accommodates the recording medium. The control unit controls the feeding of the recording medium with the recording medium feeding unit and the conveyance of the recording medium with the conveyance unit based on a detection result of the conveyance status detection unit, thereby discharging the recording medium present in the image forming apparatus to the accommodation unit.

Abstract: A recording medium is moved to a transfer printing station and print images are transfer-printed. The recording medium is transported to a fixing station. A print stop is initiated whereby the recording medium is halted, a further transfer printing is prevented, and a fixing is deactivated. It is checked whether a transfer-printed but unfixed page is still located in the printing apparatus. If so, a warning notification is automatically generated. A query is made as to whether an operating command has been input. If so, it is checked whether the unfixed page would also be output unfixed. If no, the operating command is executed. If yes, the print stop is automatically maintained. It is also inspected as to whether the unfixed page would be output upon execution of an additional operating command. If no, the additional operating command is executed. If yes, an error message is automatically generated.

Abstract: An image forming apparatus with a double-face printing function is provided. The image forming apparatus includes an image forming unit, a sheet feeding path including a regular feeding path and a return-feeding path and capable of accommodating a plurality of recording sheets, a sheet-ejection controller to eject the recording sheet out of the sheet feeding path through a sheet outlet. The sheet-ejection controller controls a recording sheet closer to the sheet outlet in the direction of sheet-conveyance along the sheet feeding path to be ejected prior to a recording sheet further from the sheet outlet when cancellation of the print job is entered during a double-face printing operation, in which the images are formed on one side of N pieces of recording sheets continuously and the other side of M pieces of recording sheets thereafter, whilst M is smaller than or equal to N.

Abstract: A recording sheet processing device includes a stack tray used, when a recording sheet gets jammed inside a subsequent finishing device, for collecting recording sheets left inside a preceding image forming device and recording sheets left inside a recording sheet feeding unit of the image forming device before those recording sheets reach the finishing device. A portion of a conveying path in the recording sheet processing device is opened so that the recording sheet that has jammed at the finishing processing side can freely fall down into a stack tray. Then, a conveying path switching claw is switched to a position for collecting subsequent recording sheets into the stack tray. Thus, subsequent recording sheets are collected in the stack tray without stoppage in conveyance.

Abstract: An image forming apparatus includes a transporting section including a transport path for transporting a recording medium; an image forming unit that forms an image on the recording medium that is transported at the transporting section; a fixing device that fixes the image formed on the recording medium at the image forming unit while heating the image; and a controller that performs control so that Pw<Pw1+Pw2 is set and so that a forced transporting operation of the transporting section is performed before starting or after ending a preparation operation of the fixing device, where Pw1 is electric power for the preparation operation including increasing a temperature of the fixing device, Pw2 is electric power for the forced transporting operation of forcedly transporting the recording medium jammed in the transporting section, and Pw is a specified value of electric power consumption.

Abstract: A paper conveying path extends from a paper feeding tray to an image forming unit, a branch conveying path extends from a branching point in the paper conveying path to a paper container, a first paper sensor and a second paper sensor are arranged in the paper conveying path upstream of the branching point, and a switch nail is arranged at the branching point to switch paths between the paper conveying path and the branch conveying path. The switch nail is controlled so that a jammed paper is conveyed to the paper container via the branch conveying path upon detecting paper jamming in the paper conveying path and the first sensor detects the jammed paper while the second sensor does not detect the jammed paper.

Abstract: An image forming device which can feed a recording paper sheet of a normal size from a paper sheet feed part by a paper sheet feed roller unit to a transport roller unit on a next stage; can form an image on the paper sheet by feeding the sheet from the transport roller unit to an image forming part; and have the paper sheet feed roller unit transport the paper sheet in feeding the paper sheet from the transport roller unit to the image forming part, the image forming device comprising a paper sheet transport path which leads the paper sheet from the paper sheet feed roller unit to the transport roller unit; a paper sheet detection sensor disposed downstream of the paper sheet feed roller unit but upstream of the transport roller unit, facing the paper sheet transport path; and a size error judgment part which is for detecting a recording paper sheet size error when a small size recording paper sheet is mixed in the recording paper sheets of the normal size.

Abstract: An image recording apparatus is disclosed. The apparatus includes a print engine; a fixing unit; a medium sensor that outputs a detection signal when a recording medium passes said medium sensor; and a controller that determines from the detection signal whether an abnormal transportation of the recording medium has occurred or not, wherein when said controller determines from the detection signal during continuous printing that a following one of two consecutive pages of recording medium remains in said print engine after removing a preceding one of the two consecutive pages that has been abnormally transported, said controller controls said fixing unit to a predetermined temperature and subsequently allows the following one of the two pages to pass through said fixing unit at a first speed so that the following one of the two pages is discharged from the image recording apparatus.

Abstract: An automated banking machine (10) determines consecutive receipt jam event indications, involving at least two receipts, prior to generating a receipt jam signal. The machine, upon determining a jam event involving a first receipt, implements a jam annunciation delay routine. The routine delays generation of a receipt jam signal until at least the next receipt is also determined to be involved in a receipt jam event indication. The delay provides the opportunity for a user to clear the indicated receipt jam prior to generation of a receipt jam signal.

Abstract: A method in an information processing apparatus which communicates with a printing apparatus which stores print data and print setting information is disclosed. This method includes: an obtaining step of obtaining the print setting information from the printing apparatus; a discriminating step of, if the print setting information obtained in the obtaining step is edited, discriminating whether or not it is necessary to recreate the print data for the printing based on the edited print setting information; and a transmitting step of, if it is determined in the discriminating step that it is unnecessary to recreate the print data, transmitting the edited print setting information to the printing apparatus in order to allow the printing apparatus to print the print data stored in the printing apparatus.

Abstract: A method for recovering from an interruption while executing color split printing is described. The document is split into two sub-documents. N sets of the first sub-document are printed on a first printer, and N sets of the second sub-document are printed on a second printer while merging sheets of the first sub-document using a paper inserter unit. When an interruption occurs when printing and merging the nth set, the nth set is skipped and the remaining sets are finished first. Then, the second printer instructs the user to place the printed sheets of the nth set of the first sub-document starting from the first sheet after the point of interruption in the paper inserter unit. The second printer prints the nth set of the second sub-document starting from the point of interruption while merging sheets of the first sub-document using the paper inserter unit to complete the nth set.

Abstract: Disclosed is an image forming apparatus that includes a recording medium feeding unit that feeds a recording medium to a predetermined conveyance path; a conveyance unit that conveys the recording medium fed from the recording medium feeding unit on the conveyance path; a conveyance status detection unit that detects a conveyance status of the recording medium placed on the conveyance path; a control unit that controls operations of the recording medium feeding unit, the conveyance unit, and the conveyance status detection unit; and an accommodation unit that accommodates the recording medium. The control unit controls the feeding of the recording medium with the recording medium feeding unit and the conveyance of the recording medium with the conveyance unit based on a detection result of the conveyance status detection unit, thereby discharging the recording medium present in the image forming apparatus to the accommodation unit.

Abstract: At step S301, since none of conveyance sensors 114, 116 and 121 detect residual paper, a CPU 203 notifies a CPU 201 that it is in a residual paper check start instruction waiting mode. At step S302, since a conveying path sensor 111 in an optional paper feed unit 101 does not detect residual paper, the CPU 202 notifies the CPU 201 that it is in a residual paper check start instruction waiting mode. At step S303, since an inlet sensor 122 of an optional paper output unit 103 does not detect residual paper, the CPU 204 notifies the CPU 201 that it is in a residual paper check start instruction waiting mode. After confirming that all the units are in the waiting mode, the CPU 201 issues a residual paper check start instruction to all the units simultaneously to improve usability by reducing initializing time.

Abstract: In a printing system having multiple document finishing assemblies, it is sometimes necessary to purge the system of print media which, as a result of a jam or other operational malfunction, remain within the printing system in an unfinished, unprinted, or otherwise undesirable condition. These “purge sheets” can be delivered to a separate purge tray provided at each document finishing assembly. A printing system having numerous document finishing assemblies will typically have a corresponding number of purge trays which must be cleared individually by an operator, which is inefficient and burdensome. The present disclosure provides a printing system and method which, in the event of a jam, consolidates purge sheets into a minimal number of purge trays. By minimizing the number of purge trays which must be cleared by an operator, efficiency gains and productivity increases can be realized.

Abstract: An image recording apparatus is disclosed. The apparatus includes a print engine; a fixing unit; a medium sensor that outputs a detection signal when a recording medium passes said medium sensor; and a controller that determines from the detection signal whether an abnormal transportation of the recording medium has occurred or not, wherein when said controller determines from the detection signal during continuous printing that a following one of two consecutive pages of recording medium remains in said print engine after removing a preceding one of the two consecutive pages that has been abnormally transported, said controller controls said fixing unit to a predetermined temperature and subsequently allows the following one of the two pages to pass through said fixing unit at a first speed so that the following one of the two pages is discharged from the image recording apparatus.

Abstract: An image recording apparatus includes a print engine that transfers a toner image on a recording medium, and a medium sensor disposed at an entrance of the print engine. The medium sensor outputs a detection signal when a recording medium passes by the medium sensor. When a following one of two consecutive pages of the recording medium is jammed at an entrance of the print engine, a controller completes a printing operation of a preceding one of two consecutive pages and indicates the jam of the following one of the two consecutive pages. Alternatively, the controller may control the fixing unit to a predetermined temperature, subsequently allowing the recording medium to pass through the fixing unit at a first speed and to be discharged. Still alternatively, the controller causes the print engine to stop and subsequently discharges the recording medium.

Abstract: A method and system for allowing user control of tray usage policy. In the event that a system purge signal is generated, indicating a purge of existing product in the production pathway, and a system sensor indicates that a tray is not empty, production output will be delayed until a user responds to an alert that existing product in the output tray may be mixed will the purged product, or until a predetermined time period has elapsed at which time the system will automatically perform the purge event, thereby mixing non-production quality product and production quality product in the tray. The user may be presented with options based on the operating mode of the image forming device.

Abstract: An image forming apparatus of the present invention includes an image formation portion for forming a toner image on a sheet, and a fixation device for fixing the toner image formed by the image formation portion on the sheet. When a sheet jam occurs, it is controlled whether the fixation device should be driven such that the sheet is discharged from the fixation device based on a sheet type.

Abstract: An integrated printing system is provided comprising a first image marking engine and a second image marking engine. The first and second image marking engines can be serially arranged with one another in a first operating mode. The first operating mode includes marking and passing of media to and from the first and second marking engines. A control system is provided for detecting a failure within one of the first and second image marking engines. A second operating mode is provided wherein the control system detects the failure and enables passing of the media through one of the first and second marking engines and marking of the media in another of the first and second marking engines when the failure is of a specified type.

Abstract: At the detection of an occurrence of a sheet feeder jam, in a case where media in the course of being printed on one face exist, printing this one face is continued, and this medium is inserted into the duplex printing unit. After this, relief of the sheet feeder jam is requested, and change in the duplex printing unit is monitored. In the case where there is no change in the duplex printing unit, after the printing process is re-started, re-use of the medium is allowed.

Abstract: Page numbers on original document volumes that have been read are deleted from the read image information as a part of image processing, and page information sorted with the original document pages of multiple read original document volumes as a single document is superimposed onto the image information from which the page numbers have been deleted, following which the pages are printed out. The pages are thus provided with serial page numbers according to the sorting thereof, and situations wherein both original and new page numbers are present on the pages can be avoided.

Abstract: A manual paper feeding apparatus comprises a tray for manual paper feeding, a paper feed roller to feed the paper fed manually from the tray, a separation roller which is pressed to contact the paper feed roller, rotated at the pressed contact position in the direction reverse to the paper feed roller, and separates the sheets of paper one by one, a power transmission device to transmit power to the paper feed roller and separation roller, and a reversing device which is provided in the power transmission device, and rotates the paper feed roller in the direction reverse to the paper feeding direction, based on that the paper fed between the paper feed roller and separation roller is pulled in the direction reverse to the manual feeding direction.

Abstract: A plurality of photosensitive drums are disposed in a sheet transport direction so as to be in contact with a transfer belt and a transfer voltage for transferring toner images on the photosensitive drums onto a sheet transported by the transfer belt is applied thereto. A sensor for sensing a temperature or humidity in the working atmosphere of the image forming apparatus is provided; when a jam occurs, sheet transportation is ceased at a first stage to thereby enable the sheet in the jam to be removed; at a second stage subsequent thereto, transportation of the sheet is restarted; and a transport distance of the sheet is controlled based on a printing ratio of an image formed on the sheet.

Abstract: A manual paper feeding apparatus comprises a tray for manual paper feeding, a paper feed roller to feed the paper fed manually from the tray, a separation roller which is pressed to contact the paper feed roller, rotated at the pressed contact position in the direction reverse to the paper feed roller, and separates the sheets of paper one by one, a power transmission device to transmit power to the paper feed roller and separation roller, and a reversing device which is provided in the power transmission device, and rotates the paper feed roller in the direction reverse to the paper feeding direction, based on that the paper fed between the paper feed roller and separation roller is pulled in the direction reverse to the manual feeding direction.