摘要:
The present invention provides an image heating apparatus capable of holding an open/close unit at a normal position and capable of inexpensively avoiding conveyance failure and deterioration in image quality. An image heating apparatus includes a fixing an roller 71 and a pressing belt 731, a pressing mechanism 75 which rotates a pressing belt unit 73 having a pressing belt 731 to retract the pressing belt 731 from a pressing contact position, a separation projection 800 which separates the sheet S from the pressing belt 731, and an open/close unit 81 which rotates a separating unit (separation projection 800, division plate 817) to retract the separation projection 800 from a separating position. The pressing belt unit 73 includes a push-up member 840 which locks the separating unit located in the separating position when the pressing belt unit 73 is in the pressing contact position.
摘要:
A sheet feeding apparatus according to an aspect of the invention includes conveying suction belts which have a function of rotating an adsorbed sheet and a function of conveying the sheet; a suction fan 112 which adsorbs the sheet to the belts; CCDs which detect a position and an skew in a direction orthogonal to a sheet conveying direction while the sheet is adsorbed to the belts; and a control device for driving the belts to rotate the sheet according to signals of CCDs in order to correct an attitude of the sheet adsorbed to the belts.
摘要:
An air heating mechanism for heating the air which is blown from a loosening/separating nozzle toward the top sheet attracted to an attracting and conveying unit is provided. A control unit controls the air heating mechanism based on moisture content information from a sensor for detecting a moisture content of a sheet supported by the tray.
摘要:
An image forming system includes a color image forming apparatus including: a color image forming portion for forming a color toner image on a surface of a recording material; a first fixing device including a first fixing portion; a second fixing device including a second fixing portion; image forming and a third fixing device for fixing a transparent toner image at a third fixing portion; and a controller for controlling a switching mechanism so that the conveyance direction of the recording material is switched to the bypass direction of the second fixing portion, or to the direction toward the second fixing portion based on whether or not the color image forming portion is subjectd to formation of the transparent toner image by the transparent image forming apparatus.
摘要:
A sheet bundle stored in a sheet storage portion is pushed from a predetermined folded position with a first pushing plate, and the sheet bundle is normally conveyed along with the first pushing plate and plunged into a nip between first folding rollers to make a fold. The first folding rollers are reversely rotated while the first pushing plate is retreated, and the sheet bundle with the fold is reversely conveyed and returned to the sheet storage portion. Then, a second pushing plate pushes the sheet bundle, conveyed through a U-shape conveyance path, from a backside of the fold to reversely fold the sheet bundle, and the sheet bundle is completely folded. Therefore, the sheet bundle having good appearance can be realized in good bundle folding processing.
摘要:
A sheet processing apparatus is operable to cut an edge portion of a sheet. The sheet processing apparatus is operable to calculate a sheet utilization efficiency based on an area of the sheet before cutting and an area of a sheet obtained by cutting the edge portion.
摘要:
A sheet conveying apparatus is provided which includes a first rotary member; a second rotary member configured to convey a sheet with the first rotary member and which is separable from and in contact with the first rotary member; a sheet detecting member which is movable by being pressed by the sheet; and a detecting sensor configured to detect a presence or absence of the sheet based on a position of the member. The sheet detecting member is movable between a detecting position for detecting a presence or absence of the sheet by the detecting sensor in which the sheet detecting member can be pressed by the sheet and a retreat position in which the sheet detecting member is retreated from a sheet conveyed, and the sheet detecting member is moved to the detecting position from the retract position in association with a movement of the second rotary member away from the first rotary member.
摘要:
A sheet processing apparatus for covering a sheet bundle with a cover sheet includes a creasing unit for making a crease along an end portion of the cover sheet adjacent the edge of the sheet bundle opposite the spine edge of the sheet bundle. The sheet processing apparatus further includes a folding-back unit for folding-back the end portion of the cover sheet along the crease made by the creasing unit.
摘要:
A sheet bundle stored in a sheet storage portion is pushed from a predetermined folded position with a first pushing plate, and the sheet bundle is normally conveyed along with the first pushing plate and plunged into a nip between first folding grollers to make a fold. The first folding rollers are reversely rotated while the first pushing plate is retreated, and the sheet bundle with the fold is reversely conveyed and returned to the sheet storage portion. Then, a second pushing plate pushes the sheet bundle, conveyed through a U-shape conveyance path, from a backside of the fold to reversely fold the sheet bundle, and the sheet bundle is completely folded. Therefore, the sheet bundle having good appearance can be realized in good bundle folding processing.
摘要:
A sheet processing apparatus is operable to cut an edge portion of a sheet. The sheet processing apparatus is operable to calculate a sheet utilization efficiency based on an area of the sheet before cutting and an area of a sheet obtained by cutting the edge portion.