Abstract: The present invention relates to a sheet processor apparatus comprising: a sheet stack portion on which a sheet is stacked; a sheet conveyance path for conveying a sheet stacked on the sheet stack portion; a sheet conveyor for conveying to the sheet conveyance path the sheet stacked on the sheet stack portion; and a sheet folding device for folding a sheet in the sheet-set conveyance path. The sheet folding device is provided in the sheet conveyance path, and at least a portion of the sheet conveyance path at which the sheet folding device is positioned is formed into a curved shape.

Abstract: A sheet treating apparatus to be connected to an image forming apparatus, which has a sheet guide portion which selectively guides a sheet to a sheet stacking portion or a sheet treating portion and, in a state in which a power supply of the sheet treating apparatus is turned off, the sheet guide portion guides a sheet to the sheet stacking portion such that a sheet delivered from the image forming apparatus can be stacked even if the power supply of the sheet treating apparatus is turned off. Moreover, a sheet can be stacked on the sheet stacking portion without using a transporting drive force of the sheet treating apparatus.

Abstract: The present invention relates to a sheet processor apparatus comprising: a sheet stack portion on which a sheet is stacked; a sheet conveyance path for conveying a sheet stacked on the sheet stack portion; a sheet conveyor for conveying to the sheet conveyance path the sheet stacked on the sheet stack portion; and a sheet folding device for folding a sheet in the sheet-set conveyance path. The sheet folding device is provided in the sheet conveyance path, and at least a portion of the sheet conveyance path at which the sheet folding device is positioned is formed into a curved shape.

Abstract: The present invention relates to a sheet processor apparatus comprising: a sheet stack portion on which a sheet is stacked; a sheet conveyance path for conveying a sheet stacked on the sheet stack portion; a sheet conveyor for conveying to the sheet conveyance path the sheet stacked on the sheet stack portion; and a sheet folding device for folding a sheet in the sheet-set conveyance path. The sheet folding device is provided in the sheet conveyance path, and at least a portion of the sheet conveyance path at which the sheet folding device is positioned is formed into a curved shape.

Abstract: The proposed apparatus is designed for being capable of recovering even when the overlapped transport of insert sheets has occurred without stopping the apparatus, thereby providing an improved utility to the users. The apparatus includes a first sheet feeder for sequentially separating blank sheets into individual sheet, an image forming device for forming images on the blank sheets, a transport device for waiting the blank sheet to be supplied to the image forming apparatus at predetermined time, a second sheet feeder for sequentially separating the insert sheets into individual sheet, an overlapped transport detecting device for determining whether or not the insert sheets have been transported in overlapped condition, and a controller for discharging all the insert sheets of a set involved in the overlapped transport onto a predetermined place, finding the first insert sheet of a next set of insert sheets, and discontinuing the drive of the transport device.

Abstract: The present invention relates to a sheet processor apparatus comprising: a sheet stack portion on which a sheet is stacked; a sheet conveyance path for conveying a sheet stacked on the sheet stack portion; a sheet conveyor for conveying to the sheet conveyance path the sheet stacked on the sheet stack portion; and a sheet folding device for folding a sheet in the sheet-set conveyance path. The sheet folding device is provided in the sheet conveyance path, and at least a portion of the sheet conveyance path at which the sheet folding device is positioned is formed into a curved shape.

Abstract: A sheet-thickness detector device has a sheet guide with a sheet-guide surface for guiding a sheet between a magnetic field sensor and a magnetic guide element. The magnetic field sensor, having an approach-guide plane disposed upstream in a sheet conveying direction for guiding the sheet to a detection surface, comes into direct contact with the sheet. By the structure mentioned above, the thickness of a sheet is detected so as to determine sheet double feeding and the like without producing sheet jamming.

Abstract: The proposed apparatus is designed for being capable of recovering even when the overlapped transport of insert sheets has occurred without stopping the apparatus, thereby providing an improved utility to the users. The apparatus includes a first sheet feeder for sequentially separating blank sheets into individual sheet, an image forming device for forming images on the blank sheets, a transport device for waiting the blank sheet to be supplied to the image forming apparatus at predetermined time, a second sheet feeder for sequentially separating the insert sheets into individual sheet, an overlapped transport detecting device for determining whether or not the insert sheets have been transported in overlapped condition, and a controller for discharging all the insert sheets of a set involved in the overlapped transport onto a predetermined place, finding the first insert sheet of a next set of insert sheets, and discontinuing the drive of the transport device.

Abstract: A sheet treating apparatus to be connected to an image forming apparatus, which has a sheet guide portion which selectively guides a sheet to a sheet stacking portion or a sheet treating portion and, in a state in which a power supply of the sheet treating apparatus is turned off, the sheet guide portion guides a sheet to the sheet stacking portion such that a sheet delivered from the image forming apparatus can be stacked even if the power supply of the sheet treating apparatus is turned off. Moreover, a sheet can be stacked on the sheet stacking portion without using a transporting drive force of the sheet treating apparatus.

Abstract: A sheet-thickness detector device has a sheet guide with a sheet-guide surface for guiding a sheet between a magnetic field sensor and a magnetic guide element. The magnetic field sensor, having an approach-guide plane disposed upstream in a sheet conveying direction for guiding the sheet to a detection surface, comes into direct contact with the sheet. By the structure mentioned above, the thickness of a sheet is detected so as to determine sheet double feeding and the like without producing sheet jamming.

Abstract: A cleaning apparatus and method for removing a recording ink from a surface of a recording material conveying belt of a recording apparatus. The method includes the steps of contacting a blade member to a surface of the recording material conveying belt and contacting an ink absorber member to a surface of the recording material conveying belt, thus removing from the belt surface an improper discharge of recording ink.

Abstract: An ink jet recording apparatus for recording an image by discharging ink from an ink jet recording head to a recording medium at a recording position, the apparatus being capable of recording the image on different recording media having different absorptivities. The apparatus conveys the recording medium along a conveyance route from the recording position, and heats the recording medium at a predetermined position in the conveyance route of the recording medium. In a first operational mode, an operative condition corresponds to a recording medium with a first absorptivity. In a second operational mode, a non-operative condition corresponds to a recording medium with a second absorptivity higher than the first absorptivity. In the invention, the ink jet recording apparatus enters the first operational mode after an electrical power is applied thereto.

Abstract: An exposure apparatus includes a light-emitting device having a linear array of a plurality of light-emitting elements, a driver for driving the light-emitting elements, an image forming optical system for causing light emitted by the light-emitting elements to form an image at a predetermined position. A first support is provided for supporting the light-emitting devicde and the driver. A second support is provided for supporting the image forming optical system. A heat conductive member is provided to interpose in a gap between the first and second supports.

Abstract: A cleaning apparatus and method for removing a recording ink from a surface of a recording material conveying belt of a recording apparatus. The method includes the steps of contacting a blade member to a surface of the recording material conveying belt and contacting an ink absorber member to a surface of the recording material conveying belt, thus removing from the belt surface an improper discharge of recording ink.

Abstract: A recording apparatus builds an image at high quality without occurrence of malfunctions attributable to raised/recessed spots on the surface of a conveyance belt and insufficient dimensioning for the width of the conveyance belt, while preventing the interior of the recording apparatus from being contaminated with erroneously ejected ink. The recording apparatus includes a conveyance belt for conveying a recording sheet below four kinds of recording heads, and the conveyance belt has a joint line along which the opposite ends of a band-shaped material are joined to each other. In addition, the conveyance belt has a band-shaped colored portion which is located remote from the joint line by a predetermined distance. The colored portion is detected by an optical sensor, and a control unit controls the driving of the conveyance belt in response to a signal derived from the detection of the optical sensor.

Abstract: A recording apparatus comprises transporting rollers for transporting a recording medium in a sandwiched state; a platen for supporting the recording medium at a recording position; and a releasing mechanism for moving the platen from a position at which the platen is located during a recording operation and releasing the recording medium sandwiched by the transporting rollers.

Abstract: Image recording apparatus characterized by being equipped with the carriers to carry recording sheet, recording head, carrier guides which is so arranged as placing the carriers in between the guides and the recording heads and pushing members provided in between the recording heads and the carrier guides, the carrier guides being rotatively supported.

Abstract: An image recording apparatus is equipped with a conveying belt member for carrying a sheet member, a recording head holding member for holding a head for recording on the sheet member, and guide members for supporting and guiding the conveying belt member. The first guide member is provided upstream of the recording head holding member, the second guide is provided downstream of the first guide, and the third guide is provided between the first and second guides. The third guide member displaces the conveying belt member toward the recording head holding member.

Abstract: A cleaning method for removing a recording ink from a surface of a recording material conveying belt of a recording apparatus. The method includes the steps of detecting a recording material jam; press contacting a cleaning member to a surface of the recording material conveying belt in response to the detected jam, thus removing from the belt surface an improper discharge of recording ink; and separating the cleaning member from the surface of the conveying belt after cleaning for a period of time. The period of time is determined based upon an amount of the recording ink discharged onto the conveying belt surface.