Abstract: A bind tape abutted against a bound edge of a sheet bundle for book-binding the sheet bundle includes a tape substrate and an adhesive layer coated on one surface of the tape substrate to bond the sheet bundle. The bind tape is provided at both longitudinal end portions thereof with areas on which the adhesive layer is not coated.

Abstract: The present invention provides a sheet post-treatment apparatus for receiving a sheet material on which an image was formed by an image forming apparatus and for post-treating such sheet material and for sending the sheet material to a next post-treatment apparatus. A sheet receiving opening has the same height as a sheet sending opening.

Abstract: A bookbinding apparatus includes pasting means for pasting a bookbinding spine cover sheet on a sheet set; printing means for printing an image on the bookbinding spine sheet; and inputting means for inputting data to be used for printing the image by the printing means; wherein when the data are inputted through the inputting means, the sizes of the image to be printed on the bookbinding spine cover sheet by the printing means can be optionally selected.

Abstract: The present invention provides a sheet sorting and containing apparatus for conveying thin sheets or thick sheets to a plurality of containing portions and for sorting such sheets into the containing portions. The apparatus includes a first path for distributing the thin sheet to the containing portion, and a second path for distributing the thick sheet to the containing portion. The first path or second path is selected in accordance with a thickness of the sheet.

Abstract: The present invention provides an automatic original feed apparatus comprising an original stacking portion on which a plurality of originals can be rested, an introduction path for directing the original supplied from the original stacking portion to a reading portion, an annular reverse rotation path for reversely rotating the original discharged from the reading position and for directing the original to the reading position again, a discharge path for discharging the original discharged from the reading position onto a discharge portion, and original feed rotary members arranged in the introduction path, reverse rotation path and discharge path, respectively, and rotated in one direction.

Abstract: A book binding apparatus comprises a convey means for conveying a sheet on which an image was formed by an image forming means, a plurality of sheet supporting means for supporting a sheet bundle to align ends of the sheets, a switching means for selecting one of the sheet supporting means to send the sheet conveyed by the convey means to the selected sheet supporting means, a bind means for adhering a bind tape to an end of the sheet bundle, and a move means for moving the aligned end of the sheet bundle supported by the sheet supporting means to the bind means.

Abstract: A book binding apparatus comprises a sheet entrance portion for receiving a sheet, a sheet convey path for conveying the sheet from the first sheet entrance portion, a first discharge opening disposed downstream of the sheet convey path for discharging the sheet out of the apparatus, sheet storing means for temporarily storing the sheet branched from the sheet convey path by branching means, binding means for binding the stored sheets, transfer means for conveying the bound sheet bundle, and a second discharge opening for discharging the conveyed sheet bundle out of the apparatus.

Abstract: A book binding apparatus has a sheet storing device for temporarily storing a sheet, a binding device for binding sheets as a sheet bundle, a transfer device for conveying the bound sheet bundle, a discharge opening for discharging the sheet bundle conveyed by the transfer device out of the apparatus, and a stacker for storing the sheet and arranged in a confronting relation to the discharge opening with the interposition of the transfer device.

Abstract: The present invention provides a sheet post-treatment apparatus in which a tab sheet is used to sort sheet materials, comprising a tab trimmer for successively cutting each of plural tab forming sheet materials being supplied, to form tabs in the sheet materials at offset tab positions. The tab trimmer is in modular form which can be removed from the apparatus and replaced with another modular tab trimmer.

Abstract: An automatic sheet feeding apparatus has a plurality of sheet supporting means adapted to stack and support sheets and to be arranged laterally side by side below in an image forming device, sheet feeding rollers for feeding out the respective sheets supported by the sheet supporting device, and a guide for supporting the sheet supporting device so that the sheet supporting device can be retracted in a direction intersecting a sheet feeding direction from the sheet feeding device.

Abstract: An image forming apparatus includes an image bearing member, image forming station for forming a latent image on the image bearing member, a conveying passage extending toward the image bearing member to guide a developing device, a first moving mechanism for engaging with the developing device in the conveying passage and moving it in a substantially horizontal plane, wherein the image bearing member, the latent image forming station, the conveying passage and the first moving mechanism are provided in a main body of the image forming apparatus, a device for accommodating a plurality of developing devices.

Abstract: An automatic original feeding apparatus has a coordinates position detecting device provided with a supporting table for supporting thereon a sheet original of which the area during image formation is to be designated, a conveying device for directing the inserted sheet original to a predetermined position, and a feed device provided upstream of the conveying device and responsive to the termination of the area designation to change over to a feeding position and feed the sheet original on the supporting table to the conveying device.

Abstract: An image forming apparatus includes sheet accommodating cassette for accommodating sheets, a device for forming images on the sheets, a first sheet conveying passage for conveying the sheet to the image forming device from the sheet accommodating cassette, a conveyor for accommodating a bundle of sheets having been subjected to an image forming operation by the image forming means at first sides thereof in a form in which leading edges of the sheets are gradually deviated in a sheet advancement direction, and for conveying the bundle as a whole, a feeder, disposed downstream of the conveyor with respect to the sheet advancement direction, for feeding one by one the sheets of the bundle from the sheet closest to the feeder, a second sheet conveying passage merging into the first passage for refeeding to the image forming device the sheets fed by the feeder, and a confining device for confining the sheets of the bundle other than the sheet being fed by the feeder.

Abstract: A multi-color image forming apparatus, for forming a superimposed multi-color image on a transfer material, includes: a latent image bearing member; device for forming a latent image on the image bearing member; plural developing devices containing different color developers for developing the latent image in different colors; device for accommodating the plural developing devices; guiding device for guiding the developing device between a first position within the accommodating device and a second position adjacent the image bearing member; driving device for moving the developing device between the first position and the second position for exchanging the developing device at the second position; device for discriminating the plural developing devices; and a second developing device disposed adjacent the image bearing member at a different position; wherein when plural colors are selected for development; a discrimination is made as to whether the developing device containing the developer of the selected c

Abstract: An image forming apparatus includes accommodating assembly for accommodating a plurality of developing devices on stages arranged substantially vertically and having first driving mechanism for moving the developing devices in a substantially horizontal plane, an image formation assembly for receiving selected one of the developing devices moved out of the accommodating assembly and for further moving it in a substantially horizontal plane, the image formation assembly including systems for forming images using the developing device, the accommodating assembly further including an opening for allowing a the developing device to be loaded into the accommodating assembly.

Abstract: A document feeding apparatus comprising a first original supporting device on which an original is placed, an original inlet port for receiving the original placed on the first original supporting device, a conveying device for guiding the original fed from the inlet port to a predetermined position and exhausting the original from the predetermined position, and a second original supporting device mounted on a housing of the document feeding apparatus and having an image area designation device for designating an image area of the original. In an image area designation mode of the apparatus, the original is placed on the image area designation device, a desired image area is designated, and the original is placed on the first original supporting device and is guided to the predetermined position through the inlet port.

Abstract: An image forming apparatus includes an image forming station for forming an image on a sheet; a rotatable member for transferring the sheet in a first direction toward the image forming station; supporting device for supporting the rotatable member for displacement in a second direction which crosses the first direction; driving device for displacing the rotatable member in the second direction to correct deviation of the sheet in the second direction; and inlet guide for guiding the sheet to the rotatable member, the guide being displaceable in the second direction together with the rotatable member.

Abstract: An image forming apparatus capable of reproducing in different colors a plurality of image areas selected from a plurality of different originals on a single copy sheet.

Abstract: An image forming apparatus includes an image forming station for conveying a sheet material along a lateral reference position and for forming an image on the sheet material; refeeding device for refeeding to the image forming station the sheet material on which the image has been formed in the image forming station; means, provided in the sheet refeeding means, for shifting the sheet material in the lateral direction from the lateral reference position by a predetermined amount, wherein the amount of the shift is predetermined on the basis of a change in a lateral dimension of the sheet material resulting from an image forming operation in the image station.

Abstract: An image forming apparatus capable of effecting plural image forming operations on one transfer sheet includes an image transfer device for transferring an image on the transfer sheet, an image magnification changing mechanism for changing the magnification of the image to be transferred onto the transfer sheet, and a control device for controlling the magnification changing mechanism in accordance with deformation of the transfer sheet caused by an image forming operation on the transfer sheet, after a first image is formed on the transfer sheet and before a second image is formed on the same transfer sheet, whereby those images are correctly registered.