摘要:
A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.
摘要:
When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.
摘要:
An image forming apparatus has a plurality of developing devices for developing an electrostatic image formed on an image bearing member, a rotary member holding the plurality of developing devices and rotated in a route including a developing position, the rotary member selectively positioning any one of the developing devices at the developing position, each of the plurality of developing devices having a first developer carrying member and a second developer carrying member for carrying a developer thereon and carrying it to the image bearing member, and a holding member holding the first developer carrying member and the second developer carrying member and pivotally movably provided.
摘要:
A sheet feeding device includes a sheet accommodating unit supported by an apparatus main body in an insertable and withdrawable manner in a direction orthogonal to a feeding direction of the sheets, a leading edge regulating unit provided fixedly to the sheet accommodating unit, a trailing edge regulating unit provided in the sheet accommodating unit, a side edge regulating unit provided in the sheet accommodating unit, and an insertion position limiting unit configured to contact a frame on a rear of the apparatus main body in an inserting direction of the sheet accommodating unit to limit an insertion position of the sheet accommodating unit, wherein the insertion position limiting unit is arranged on a rear of the sheet accommodating unit and on an upstream of a position of center of gravity of the sheet accommodating unit along a sheet feeding direction.
摘要:
A sheet guiding rib protrudes below a sheet suction surface of a plurality of suction conveyer belts, the sheet guiding rib being provided at a position on a downstream side in a sheet conveying direction of a sheet suction region, in which a sheet can be sucked, of the sheet suction surface of the plurality of suction conveyer belts, and between the plurality of suction conveyer belts. At a time of conveying a topmost sheet sucked and deflected downward at a part of pressing a sheet surface detecting flag, a deflection amount of the topmost sheet is reduced by bringing the deflected part of the topmost sheet into abutment against the sheet guiding rib.
摘要:
Provided is a sheet feeding device having a sheet surface detecting mechanism installed to be movable up and down between adjacent adsorption conveyance belts 21, and detects a position of the top surface of the sheet by a sheet surface detecting member 61 that moves upward higher than the adsorbing surface of an adsorption conveyance belt 21. The position of the lower surface of the sheet surface detecting member 61 being pushed up by the blown upward sheet is regulated such that the difference in height between the adsorbing surface of the adsorption conveyance belt 21 and the lower surface of the sheet surface detecting member 61 is smaller than the difference in a height direction between the adsorbing surface of the adsorption conveyance belt 21 and the upper surface of a separation nozzle by a sensor abutting portion 62 that regulates upward movement of the sheet surface detecting member 61.
摘要:
Even if a sheet surface detection mechanism outputs a signal indicating that an uppermost sheet among blown-up sheets is within a conveyance range, if a trailing edge sheet surface sensor outputs a signal indicating that the uppermost sheet among the blown-up sheets is lower than the conveyance range when the conveyed uppermost sheet passes by the trailing edge sheet surface sensor, a lifting and lowering portion is controlled to lift the tray so that the uppermost sheet is positioned within the conveyance range.
摘要:
A tuner for matching impedance includes: a body having a tubular outer conductor and a tubular inner conductor coaxially provided in the outer conductor, the body forming a part of the microwave transmission path; an annular dielectric slug provided between the outer conductor and the inner conductor, the slug being movable along a longitudinal direction of the inner conductor; and a drive mechanism for moving the slug and including a drive part for applying a driving force; a drive transmission part for transmitting the driving force to the slug; a drive guide part for guiding movement of the slug; and a holding part for holding the slug at the drive transmission part, and wherein the drive transmission part, the drive guide part and the holding part are accommodated in the inner conductor.
摘要:
An image forming apparatus has a vibration generating source, a holding member that holds the vibration generating source and a sealing member arranged between them. An elastic damping member is inserted in a through-hold formed in the holding member and is brought into pressure contact with the vibration generating source, the damping member having a retaining portion which is retained to a surface of the holding member on the side opposite to a holding surface of the vibration generating source and a main body portion that has a diameter smaller than a diameter of the through-hole so that it is inserted into the through-hole without contacting the through-hole and brought into pressure contact with the vibration generating source. There is also a fixing portion that integrally fixes the holding member and the vibration generating source through the damping member.
摘要:
A sheet feeding apparatus may include a sheet storage unit, an air blowing unit, a suction conveyance unit, and a conveyance guide. A sheet in the sheet storage unit blown by the air blowing unit may be conveyed to the conveyance guide by the suction conveyance unit. The conveyance guide has a guide surface and inclined portions arranged upstream in the sheet conveyance direction, formed therein from a sheet conveyance center to ends in a sheet width direction perpendicular to the sheet conveyance direction. The inclined portions are inclined from the upstream side towards the downstream in the sheet conveyance direction. As a distance in which an inclined portion resides away from the suction conveyance unit increases, the inclined portion becomes positioned more upstream in the sheet conveyance direction.