摘要:
It is one objective of the present invention to provide a sheet feeding apparatus that can steadily separate and feed individual sheets without causing an image detect, such as a transfer failure. The sheet feeding apparatus, for employing a sheet feeding portion to feed sheets stacked on elevatable sheet stacking means, includes an air blowing portion for blowing air against an end face of a sheet stack supported by the sheet stacking means, a sheet position detector for detecting that a top face of the sheet stack has reached a position whereat a sheet feeding operation by the sheet feeding portion is enabled, wherein, when the sheet position detector has detected that the top face of the sheet stack has reached the position for sheet feeding, or when the sheet feeding portion starts the sheet feeding operation, and when a sheet is not actually fed after a predetermined waiting time has elapsed, the air blowing portion starts an air blowing operation during a predetermined air blowing period.
摘要:
In an image forming apparatus that folds plural sheets in folio, an image forming unit forms images an a recording area on the sheets and forms a margin between the recording area and another forming area. A projecting unit folds the sheets upon nipping the sheets between two rollers by projecting between the two rollers so as to nip a part of the sheets where the margin is formed at first. The projecting unit projects to the margin of prescribed width of images formed at an image forming apparatus body to fold the plural sheets.
摘要:
A copying apparatus has a recirculating document feeder; an exposure device for scanning and exposing the fed document sheets fed onto the document table by the document recirculating device; an image forming device for forming the images on the scanned and exposed document sheets; and a sheet receiving device for receiving and storing the recording medium sheets carrying images formed by the image forming device. The copying apparatus provides a first selecting device for selecting one of a first exposure mode in which the document recirculating device temporarily stations the document sheets on the document table while the exposure device is moved to scan and expose the stationary document sheets and a second exposure mode in which the document recirculating device continuously moves the document sheets on the document table to cause the document sheets to be scanned and exposed; a second selecting device for selecting one of a first receiving mode in which a set of recording medium sheets corresponding to the stack of documents are received and stored in each of a plurality of trays and a second receiving mode in which each of the trays receives and stores a plurality of recording medium sheets corresponding to one of the document sheets; and a control device for controlling the timing of change of the tray into which sheets are ejected in accordance with the modes selected by the first and second selecting devices.
摘要:
When a top sheet of a sheet stack stacked on a sheet tray capable of moving up and down is fed by sheet feeding device, air is blown to the end face of the sheet stack by air blowing device for improving a separation characteristic. The quantity of blown air for the top sheet to rise by a specified amount is determined based on a signal from rising sheet detecting device for detecting the top sheet rising by air blown by the air blowing device, and air is blown based on the determined air quantity when the sheet is fed by the sheet feeding device.
摘要:
When a top sheet of a sheet stack stacked on a sheet tray capable of moving up and down is fed by sheet feeding device, air is blown to the end face of the sheet stack by air blowing device for improving a separation characteristic. The quantity of blown air for the top sheet to rise by a specified amount is determined based on a signal from rising sheet detecting device for detecting the top sheet rising by air blown by the air blowing device, and air is blown based on the determined air quantity when the sheet is fed by the sheet feeding device.
摘要:
A sheet feeding apparatus having sheet stacking means movable up and down with a plurality of sheets stacked thereon, sheet feeding means for feeding out the sheets stacked on the sheet stacking means and control means for moving the sheet stacking means up and down so that during the supply of the sheets to the sheet stacking means and during the taking-out of the sheets from the sheet stacking means, the upper surface of the sheets stacked on the sheet stacking means may be automatically moved to a sheet supplying position and a sheet taking-out position set between the upper limit position and the lower limit position in the range of the upward and downward movement of the sheet stacking means each time the sheet is supplied and each time the sheet is taken out.
摘要:
In a sheet bundle folding apparatus for folding a bundle of sheets in two, a stick-out plate for sticking the bundle of sheets is adapted to reliably stick the bundle of sheets folded while being held between rollers for folding the bundle of sheets in a folding position therefor. A first folding roller is positionally fixed. A second folding roller is movable toward and away from the first folding roller. The stick-out plate sticks the bundle of sheets and pushes it into between the first and second folding rollers. At this time, the rollers of the stick-out plate roll along a groove. The forward roller is fitted in the groove with a correction allowance above it, and is downwardly biased by a spring. The stick-out plate follows the folding position for the bundle of sheets.
摘要:
The image forming apparatus including a sheet conveying path which is arranged at the sheet inserting device and which conveys the sheets on which the images are formed at the image forming apparatus main body and the insertion sheet to the post-processing device and a sheet conveying portion which is arranged at the sheet conveying path and which conveys the sheets being capable of accelerating and decelerating is controlled to accelerate sheet conveying speed of the sheets from the image forming apparatus main body from a predetermined conveying speed at the sheet conveying path, to insert the insertion sheet so as to follow a preceding sheet which is accelerated, and to convey the sheets from the image forming apparatus main body and the insertion sheet to the post-processing device after being decelerated to the predetermined conveying speed.
摘要:
A sheet processing apparatus includes a winding unit configured to wind a continuous sheet, a binding unit configured to bind the continuous sheet that is wound and stacked by the winding unit, and a first cutting unit configured to cut the continuous sheet that is bound by the binding unit in a state that the continuous sheet is wound by the winding unit.
摘要:
When performing a punching operation for each of sheets individually conveyed to a predetermined punching position within a conveying path, each of the individually conveyed sheets is positioned at the predetermined punching position before performing the punching operation.