摘要:
A continuous sheet transport device transports a continuous sheet along a sheet transport path passing through a transfer position at which a toner image is transferred. The device includes a first transport unit that is provided on an upstream side of the transfer position on the sheet transport path and transports the continuous sheet, a sheet feeding unit that is provided on an upstream side of the first transport unit on the sheet transport path and that feeds the continuous sheet, a leasing end of which is placed on the sheet feeding unit, toward a downstream side on the sheet transport path, and an operation controller that controls the first transport unit to temporarily operate in a reverse transport direction so that the continuous sheet is transported to the upstream side at a timing before the leading end of the continuous sheet reaches the first transport unit.
摘要:
A sheet folding apparatus includes a fan folding unit that fan folds a folded-back sheet into a width or length of the regular size to file the sheet in the regular-size folder such that the sheet forms layers along a traveling direction of the sheet; first and second punching units that punch the filing hole in the sheet fan folded, respectively, into the width and the length of the regular size at the portion to be punched to file the sheet in the regular-size folder; and a sheet-processing setting unit that sets a fold mode of the fan fold and selects one of the first punching unit and the second punching unit for use in punching of the filing hole in the sheet based on a size and orientation of the delivered sheet.
摘要:
A device and method for applying images to continuous media stock, such as rolls of paper, blank labels, etc., using a cut-sheet image forming device. While the continuous media stock moves along a media path in the cut-sheet image forming device, one or more sensors in the cut-sheet image forming device detect inter-sheet holes disposed along the continuous media stock. Based on the detected inter-sheet holes, the cut-sheet image forming device tracks the position of the continuous media stock. By tracking the position of the continuous media stock, the cut-sheet image forming device can identify specific sections of the continuous media stock as image areas appropriate for image transfer.
摘要:
An apparatus and a method for forming an image is provided that uses a contact type transfer member and a retract mechanism so as to transfer a toner image onto a continuous medium, performs the transfer process stably onto various continuous media and reduces unnecessary transfer of toner from the contact type transfer member to the continuous medium.The unnecessary transfer of toner may be caused by a concentration of contact stress when the contact type transfer member (16), which is moved by a retract mechanism, contacts with the continuous medium (25). To dissipate the contact stress, the transfer member (16) contacts with the continuous medium (25) while the continuous medium (25) is steadily conveyed and the transfer member is steadily rotated. Accordingly, the transfer of the toner from the transfer member (16) to the continuous medium (25) may be reduced. Furthermore, the friction at the contact line may be reduced and thus staining of the continuous medium may be further reduced.
摘要:
A printer prints on two sides of a sheet of paper having continuous pages, and discharges the paper to a postprocessor for disconnecting the paper in page units and storing the disconnected sheets of paper in a stack. Depending on whether the postprocessor has an inversion mechanism that inverts front and back sides of the paper, sides of the paper on which data for the front side of the paper and data for the back side of the paper are printed are switched. With this arrangement, even when the postprocessor does not have the inversion mechanism, the front side data is printed on the back side, and the back side data is printed on the front side thereby enabling the postprocessor to stack the disconnected sheets of paper in page units in the order of page numbers.
摘要:
A system and method for utilizing web that is free of tractor pin feed holes comprises the driving of the web along a predetermined path within the utilization device. A web guide is provided in an upstream location from a utilization device element. The guide engages width-wise edges of the web and forms the web into a trough to stiffen the web. A drive roller and a follower roller impinge upon opposing sides of the web and rotate to drive the web through the guide. The drive roller is located adjacent to the guide according to a preferred embodiment. A registration controller is utilized to synchronize the movement of the web with the operation of the utilization device element. The controller includes a drive controller that controls the speed of either the drive roller or the utilization device element to maintain the web and the utilization device element in appropriate synchronization.
摘要:
An apparatus for printing continuous paper wherein, when a paper uppermost portion sensor produces an unstable output due to the position of the paper in controlling the operation for raising or lowering a table for stacking the continuous paper, the output value is invalidated and the operation for raising or lowering the table is continued. The sensor detects the uppermost position of the paper on the paper table on which the continuous paper carried through a printer unit is folded by a guide member and is stacked, and a control unit controls a moving mechanism relying upon the sensor output to change the distance between the paper table and the guide member. When the sensor is producing an unstable output due to the position of the paper being stacked, the control unit works to continue the operation of the moving mechanism even when the sensor has detected the paper.
摘要:
An image recording apparatus for recording a two-color image on both surfaces of a continuous recording medium includes a toner image recording portion which has a toner carrier and transfers a toner image formed on a surface of the toner carrier onto the recording medium, a tractor for feeding the recording medium on which the toner image is transferred, and a both side fixing machine for receiving the recording medium fed by the tractor to fix the toner image transferred on the recording medium. In this image recording apparatus, guide rollers come into contact with non-printing portions on both side ends of the recording medium to apply tension to the recording medium by a spring and thereby gives a predetermined slack to the recording medium to absorb a difference in speed resulted between the tractor and the both side fixing machine.
摘要:
A printing apparatus for printing on double-sides of a recording medium has a first print control unit for controlling an one-line exposure for the right or reverse side by a horizontal synchronous signal, and a second print control unit for controlling the one-line exposure for the reverse or right side by using this horizontal synchronous signal. A print start timing for the right side can be synchronized with a timing for the reverse side, and is capable of preventing a deviation in print position between the right side and the reverse side of the recording medium even by providing the print control units for the right side and the reverse side, individually.
摘要:
A paper transfer apparatus is provided which is incorporated in an electrophotographic printer having a photosensitive drum for printing on elongated paper. The paper transfer apparatus serves to transfer the elongated paper along a transfer path extending via the photosensitive drum. The paper transfer apparatus includes a discharge or scuff roller for pulling the elongated paper in a transferring direction. The discharge roller is spaced downstream from the photosensitive drum. The paper transfer apparatus also includes a pair of tractors for advancing the elongated paper along the transfer path. The tractors are spaced upstream from the photosensitive drum. Each of the tractors is provided with a presser member supported by a tractor lid of the tractor. The presser member serves to apply friction to the elongated paper when the tractor lid is in closed position.