摘要:
A sheet handling apparatus (PD) includes a sheet reception unit (F) configured to receive a sheet; an alignment unit (51a, 51b) configured to align the sheet in a conveying direction of the sheet, a trailing edge of the sheet in the conveying direction coming into contact with the alignment unit (51a, 51b); and a moving unit configured to move the alignment unit (51a, 51b) along the sheet reception unit (F) in the conveying direction. A first position for aligning and binding sheets and a second position located above the first position in the sheet reception unit (F) are set for the alignment unit (51a, 51b) as receiving positions at which the sheet is received from the sheet reception unit (F).
摘要:
A sheet conveying device includes a first rotating shaft (601), a driving roller (602) fixed to the first rotating shaft (601), a driven roller (604) that faces and is pressed against the driving roller (602), and a second rotating shaft (603) supporting the driven roller (604). The driving roller (602) or the driven roller (604) includes a cylindrical center portion, and end portions (608) located at both ends of the center portion and having an approximately circular truncated cone shape. Surfaces of the center portion and the end portions (608) are made of an elastic material. An outer surface of the center portion is matched with outer surfaces of one end of the end portions (608), and a diameter of another end of the end portions (608) is larger than a diameter of the one end. The end portions (608) have a hollow (609) inside, and have a thin surface.
摘要:
A sheet processing apparatus (PD) includes: a sheet stacking unit (F) on which sheets are accommodated and stacked as a sheet bundle (SB); an aligning member (51a,51b) that is movable along a trailing end, in a conveying direction, of the sheet bundle (SB) stacked on the sheet stacking unit (F) and that aligns the trailing end of the sheet bundle (SB) in the sheet conveying direction by abutting thereon; a binding unit (S1) that moves along the trailing end of the sheet bundle (SB) in the sheet conveying direction and binds the aligned sheet bundle (SB); and a moving unit (55) that moves the aligning member (51a) in the sheet conveying direction. A distance from the trailing end of the sheet bundle (SB) in the sheet conveying direction to a binding position is adjusted by moving the aligning member (51a) in the sheet conveying direction.
摘要:
A sheet processing apparatus (2) includes: a folding unit (215, 230) that folds a sheet bundle (SB); a pressing unit (260) that presses a fold part of the sheet bundle (SB), which has been folded by the folding unit (215, 230), in a thickness direction of the sheet bundle (SB) to enhance folding of the fold part; and a moving unit (263) that advances and returns the pressing unit (260) in a width direction of the sheet bundle (SB). The pressing unit (260) starts pressing from a predetermined position in the width direction of the sheet bundle (SB) during advancing movement, and releases pressing after going past one end of the sheet bundle (SB). The pressing unit (260) starts pressing from the predetermined position during return movement and goes past the other end of the sheet bundle (SB).
摘要:
A sheet discharging device includes: sheet discharging rollers (6) that receive each of sheets (P) conveyed thereto and discharge the sheets (P) one by one; a shift tray (202) on which the sheets discharged by the sheet discharging rollers (6) are to be stacked; an air blower (400); and a CPU (101). The air blower (400) forms an air layer (AL) between the shift tray (202) and a sheet (P1) when the sheet (P1) is dischraged onto the shift tray (202) by the sheet discharging rollerls (6), or between a sheet (P2) and the sheet (P1) that is already placed on the shift tray (202) when the sheet (P2) is discharged. The CPU (101) controls an air velocity of air to be delivered by the air blower (400) based on sheet information, thereby causing the air layer (AL) to extend to the entire surface of the sheet (P1, P2).
摘要:
An image forming apparatus includes at least first (202K), second (202C) and third image (202M) carriers (202M), a first drive source (98), a second drive source (99), at least one visible image forming mechanism for forming a visible image on the image carriers, a transfer unit (15) for overlappingly transferring the visible images, an image detector (136), and a controller (150). The first drive (98) source transmits a driving force to at least the first image carrier (202K). The second drive source (99) transmits a driving force to at least two image carriers other than the first image carrier (202K). The controller (150) calculates an amount of misalignment of the overlapped visible images that remain at the start timing of image formation based on the start timing of image formation after the timing correction, and separately determines driving speeds of the first (98) and the second drive sources (99) based on the amount of misalignment of the overlapped visible images.
摘要:
An image forming apparatus, in which a program for carrying out an image forming method is provided, includes a transfer member to receive respective images formed on a plurality of image bearing members, an image detecting unit to detect the images conveyed on the transfer member, a paper length detecting unit to detect a length of a recording medium in a sheet travel direction, a counting unit to count the number of recording media and to change a count up value according to a detection result by the paper length detecting unit, and a control unit to control an image forming timing with respect to the image bearing members based on a detection timing of the image and to perform a positional deviation adjustment each time a counted value increases by a predetermined amount so as to reduce an amount of a positional deviation of the image.