摘要:
A document feeding apparatus having a conveyor belt which moves documents along a platen glass plate of a photoreproducing machine, first and second rollers which support the conveyor belt, a driving source connected to the first roller, and a member for driving the second roller so that it prevents the conveyor belt from slackening. In preferred forms of the device, the first roller is connected to the second roller by a one-way clutch and the line speed of the first or second roller on the document feed side is greater than the line speed of the first or second roller on the discharge side.
摘要:
A document feeding apparatus wherein a member for regulating the rear end of a document is provided movably in non-stepped manner substantially in a document feeding direction at the back of a document stacker having a paper feeding unit at the forward portion thereof. The movement of the rear end regulating member is controlled by a control device. A movable paper discharging device is provided. The movable paper discharging device has a discharging member, which is trained so as to surround the rear end portion of the document stacker in the shape of letter "C".
摘要:
A method and an apparatus for copying images printed on both sides of a document onto both sides of copy sheets uses an automatic document conveying device capable of reversing the side of a document to be copied. Also disclosed is a the resuming method of a copying operation after removing a jammed sheet during the reverse side copying step of the both-sided document and the delivering method of the both-sided document when the copying operation is cancelled.
摘要:
Disclosed is an image forming device which can prevent occurrence of damage on the surface of a fixing roller or a fixing belt due to the contact of the end of a sheet with the fixing roller or fixing belt. The image forming device, for transferring a toner image to a sheet fed out from a sheet feed section and fixing the toner image to the sheet by pressing the sheet carrying the toner image at a fixing section, includes a moving section for moving the sheet and or the fixing section in the direction at right angles to the traveling direction of the sheet within a preset moving range, the moving section being controlled based on a preset operation pattern.
摘要:
According to this invention, in a manual feed apparatus having an opening/closing tray which can be stored in an image forming apparatus main body by swing operation, and a feedout member which feeds a sheet stacked on the opening/closing tray, the opening/closing tray is swingably connected to a vertically movable support member which is restricted to be movable in a vertical direction, and the apparatus includes a vertically movable unit which moves the vertically movable support member in the vertical direction.
摘要:
Disclosed is a sheet transport device having: a registration roller to transport a sheet after correcting a skew of the sheet; a drive source to drive the registration roller; a frame body; and a rotation resisting body which is connected to the registration roller on one side and is connected to the frame body on the other side, to create a resisting force against a rotation of the registration roller in a sheet transport direction.
摘要:
An image forming apparatus includes: a fixing device that fixes the toner image onto the recording medium by applying heat and pressure; ejection rollers provided away from the fixing device for ejecting the recording medium; a guide provided on at least one part of a recording medium ejection path between the ejection rollers and the fixing device for guiding a conveyance of the recording medium; at least one spur provided on the guide, having a plurality of teeth on a circumference thereof; and a slit formed on the guide so that the plurality of teeth of the spur are protruded on a side of the recording medium ejection path through the slit, wherein the recording medium is conveyed from the fixing device by bringing the plurality of teeth of the spur into contact with a surface of the recording medium.
摘要:
A sheet conveyer for conveying a sheet so that an image of a document is duplicated on both sides of the sheet by an image forming machine such as a photocopy machine. The sheet conveyer has; a first conveyance path for conveying the sheet to an image forming section of the image forming machine; a second conveyance path for conveying the sheet from the image forming section to a tray; the tray for holding the sheet; a third conveyance path for conveying the sheet from the tray to the image forming section; and, a pair of nip rollers, located at the vicinity of the tray, for holding the sheet conveyed through the second conveyance path, and forwarding the sheet into the third conveyance path; in which the sheet conveyance apparatus has a first mode that the sheet is forwarded into the third conveyance path by the nip rollers without being placed on the tray, and a second mode that the sheet is once placed on the tray and forwarded into the third conveyance path by the nip rollers.
摘要:
A document feeding apparatus wherein a document is separated one by one and fed onto a platen glass and subjected to exposure the outside of the document to light, and thereafter the surface of the document is reversed by a reversible rotational mechanism and again moved onto the platen glass to expose the inside of the document.
摘要:
An image forming apparatus including; an image carrier carrying a toner image; a transfer belt making pressure contact with the image carrier through a sheet of paper and transferring the toner image onto the sheet of paper; a plurality of supporting rollers stretching and supporting the transfer belt; and a transfer roller to which transfer electrical current is applied, as well as making pressure contact of the transfer belt with the image carrier from a back surface of the transfer belt, wherein at least one roller of the supporting rollers is formed in an inverted crown shape with a size of the center portion is smaller than a size of the end portion, and the transfer belt is rotationally driven for a prescribed time without applying transfer electrical current both or in either of before and after transfer of a toner image.