Abstract: Sheet processing apparatus including a first tray for stacking sheets received from an image forming apparatus, a discharge unit for discharging the sheets from the first tray in a bundle, a second tray for stacking the sheets discharged from the first tray, a discriminating unit for discriminating an attribute of a sheet to be stacked on the first tray, and a controller for selectively controlling whether or not to discharge sheets by the discharge unit in accordance with a discrimination of the discriminating unit.

Abstract: A sheet handling device has a sheet-aligning rotary member with an ejection device for ejecting sheets into a sheet stacking device, a sheet end stopper for holding the end of the sheet stacked in the sheet stacking device; and at least one rotary member for aligning the sheets ejected in the sheet stacking device with the sheet end stopper. The rotary member has an arc-shape outer peripheral surface around a portion of a circumference of said at least one rotary member.

Abstract: A sheet treating apparatus is mountable in a space portion of an image forming apparatus including an image-forming portion for forming an image on a sheet and an image-reading portion for reading an image of an original. The image-reading portion is disposed above the image-forming portion. The sheet is delivered in the space portion formed between the image-forming portion and the image-reading portion. The sheet treating apparatus includes a connection path unit to be connected with a sheet delivery path for delivering the sheet from the image-forming portion, which connection path unit is mounted in the space portion from the outside of a side surface of the main body of the image forming apparatus, and a sheet-treating unit for performing a treatment of the sheet transported from the connection path unit, which sheet-treating unit is mounted in the space portion from the front side of the main body of the image forming apparatus.

Abstract: An image forming apparatus has an image forming section for forming images on sheets, including a sheet processing apparatus disposed to be piled up with a sheet conveying section and the image forming section in a housing of the image forming apparatus. The sheet processing apparatus aligns and binds sheets on which images are formed.

Abstract: A sheet treating apparatus includes a tray liftable and lowerable while sheets are stacked on the tray. A sheet pressing member is movable between a pressing position in which the sheets on the tray are pressed by the sheet pressing member and a retracted position. A sheet pressing member driving device retracts the sheet pressing member when the tray is lowered and for moving the sheet pressing member to the pressing position when the tray is lifted. A detecting device detects a height position of the sheets on the tray to stop lifting the tray.

Abstract: A sheet processing apparatus includes a stacking tray for accommodating sheets discharged thereto. A sheet discharging mechanism discharges the sheets to the stacking tray. A moving mechanism reciprocates moves substantially vertically the stacking tray between a first position, which is below the sheet discharging mechanism, and a second position between said first position and the sheet discharging mechanism. A controller controls the moving mechanism to move the stacking tray to the second position when the sheet discharged by said discharging means is discharged through a predetermined distance onto a stacking tray located at the first position.

Abstract: The present invention provides a sheet post-treatment apparatus comprising a sheet convey portion having a sheet path and a sheet discharge opening, and a sheet receiving tray portion having a plurality of sheet receiving tray means. Wherein a sheet is transferred between the sheet convey portion and the sheet receiving tray portion, and the sheet convey portion and the sheet receiving tray portion can be shifted relative to each other in an arrangement direction of the sheet receiving tray means whenever the sheet is transferred. Further, there is provided detection means for detecting the fact that the sheet exists between the sheet convey portion and the sheet receiving tray portion.

Abstract: An electrophotographic photosensitive member having a high sensitivity to long-wavelength light as emitted by a semiconductor laser and causing little change in potential change during repetitive use is formed by using as a charge-generating material a hydroxygallium phthalocyanine having a crystal form characterized by a strongest peak at a Bragg angle (2.theta..+-.0.2 deg.) of 28.1 deg. in a CuK.sub..alpha. characteristic X-ray diffraction pattern. The hydroxygallium phthalocyanine may preferably be produced through a process including treating a halogenated gallium phthalocyanine for conversion into a hydrous hydroxygallium phthalocyanine, freeze-drying the hydrous hydroxygallium phthalocyanine into a low-crystallinity hydroxygallium phthalocyanine, and milling the low-crystallinity hydroxygallium phthalocyanine.

Abstract: A sheet binding apparatus includes at least one bin tray for accommodating sheets; at least one binding device for binding a set of sheets in the bin; a first sheet moving device for moving the sheet sets in the bin tray; and a second sheet moving device for moving the sheets sets in the bin tray in a direction crossing with the direction of movement by the first sheet moving device; wherein the bin is provided with a sheet stopper, to which the trailing edge of the sheet is abutted, and at least one cut-away portion for accommodating the binding device when the binding device operates, and wherein an upstream corner of the sheet set moved by the second moving device is opposed to a region other than the cut-away portion.

Abstract: A sheet transport apparatus has a puncher for punching a hole in a sheet as the sheet is being transported through a transport path, and a transport device for clamping and transporting the sheet, the transport device being disposed downstream of the puncher and having a first rotation member and a second rotation member for pressing the sheet into contact with the first rotation member, the transport device being disposed at a position where a hole punched by the puncher passes through.

Abstract: A sheet processing apparatus includes a first sheet feeder for feeding a first sheet; a second sheet feeder for feeding a second sheet for discrimination; a sheet sticking device for sticking the second sheet fed from said second sheet feeder on the first sheet in the first sheet feeder such that a part of the second sheet is partly extended out of the first sheet.

Abstract: A sheet post processing apparatus includes at least one sheet receiving tray for accommodating sheets; a sheet discharging device for discharging sheets to the said sheet receiving tray; a sheet processing device for processing sheets accommodated on the sheet receiving tray; a reference member for guiding edges of the sheets on the sheet receiving tray and for functioning as a reference for alignment of the sheets to a reference position; an aligning member movable to a predetermined alignment position to urge the sheets on the receiving tray to the reference member; a device for changing a reference position of the reference member to make constant a distance from an edge of the sheet to a position where the sheets are processed by the sheet processing device.

Abstract: A sheet post-processing apparatus includes at least one sheet receiving tray for accommodating sheets; a sheet discharger for discharging sheet to the sheet receiving tray; a sheet moving mechanism for moving the sheets on the sheet receiving tray inclinedly toward a front side of the apparatus.

Abstract: A sheet post-processing apparatus for accommodating the sheet material discharged from an image forming apparatus on at least one sheet receiving tray and capable of accommodating at least two sets of sheet per sheet receiving tray, the apparatus includes controller for determines number of the sheet sets allowed to be accommodated per sheet receiving tray, on the basis of the number sheets of a set of originals, maximum number of the sheets accommodating per sheet receiving tray, and a correction coefficient.

Abstract: A color image processing apparatus includes arranging means for arranging intervals between dot positions on a scanning line at which dots are formed, and shifting means for shifting the dot positions on the scanning line by a shifting amount. At least one of the intervals and the shifting amount for a first color component are different from an interval and a shifting amount of a second color component. The processing apparatus also includes control means for controlling the arranging means and the shifting means so that n (n.gtoreq.3) adjacent dot positions at which the first color component and the second color component overlap correspond to vertices of a substantially regular polygon having n vertices.

Abstract: A discharged sheet stacking apparatus is provided with a plurality of trays aligned to stack discharged sheets thereon, and a drive member for moving the trays in the alignment direction. Between at least two of the plural trays, a spacer member moved in the alignment direction by the drive device in the same manner as the trays is interposed to widen the space between the trays. The space between the trays can be arbitrarily changed by the spacer member.

Abstract: A sorter for enclosing sheets ejected out from a recording apparatus of an electrophotographic type includes a plurality of movable trays for enclosing the sheets, and a driving unit for driving the tray so as to move the tray. In the present sorter, the driving unit widens a distance between the tray to which the sheet is enclosed and the tray adjacent to the tray and, after the sheet was enclosed to the tray, the driving unit reduces the distance between the tray to which the sheet was enclosed and the tray adjacent to the tray so as to press a curl of the sheet. By vertically moving the plurality of trays, the distance between the trays is changed and the tray to enclose the sheet is changed. Each time a predetermined number of sheets are enclosed to the tray, the plurality of trays are moved upward and, after the elapse of a predetermined time, the plurality of trays are moved downward.

Abstract: A sheet processing apparatus has at least one sheet receiving tray for accommodating sheets; a sheet discharge device for discharging the sheets onto the sheet receiving tray; an aligning device that presses end surfaces of the sheets accommodated in the sheet receiving tray to align the sheets; and a processing device for binding the sheets accommodated in the sheet receiving tray, wherein the pressing force in the widthwise direction of the sheets exerted by the aligning device is changed in accordance with the change in mode of the process when the processing device performs the process.

Abstract: A sheet post processing apparatus includes at least one sheet accommodating device for accommodating sheets; a sheet discharging device for discharging sheets to the sheet accommodating device; a transfer device for transferring a set of sheets on the sheet accommodating device to a sheet take-out position; and a manual control device for operating the transfer device.

Abstract: A color image processing apparatus for sequentially inputting image data which corresponds to each of a plurality of color components in units of pixels of a predetermined quantity, delaying, with respect to a reference phase, at least the first color component or the last color component and sequentially forming image in the units of pixels of a predetermined quantity in accordance with the delay.