Abstract: A rotating-drum scanning apparatus includes a rotating drum and a feed mechanism for feeding a rectangular sheet to the drum and winding it around the drum so that one side of the sheet is inclined at an angle .theta. to the axis of the drum. In a first embodiments, a scanning head is disposed to be movable in a direction parallel to the axis of the drum and includes a plurality of scanning elements arranged along a line parallel to the axis of the drum. These elements form on the sheet scanning lines extending at right angles to said one side of the sheet as the drum and the scanning head move. The angle .theta. is given by .theta.=tan.sup.-1 .DELTA.L/L, where L is the circumference of the drum and .DELTA.L is the distance covered by the scanning head while the drum makes one revolution. Another embodiment is similar to the first embodiment except that it arranges the scanning elements along a line which is also inclined at the angle .theta.

Abstract: An image-forming/processing station forms images in a plurality of colors in a superposed manner, in units of individual colors, on an identical unrolled portion of a recording roll medium, in accordance with color image formation data. When the images in the plurality of colors are to be formed, a recording medium conveying unit reciproctes, a plurality of times, the identical unrolled portion of the recording roll medium to the image-forming/processing station, in accordance with formation of the image in the plurality colors, and conveys a recorded-on unrolled portion of the recording roll medium to a downstream side of the station when formation of the images in the plurality of colors is completed. A recording medium storing unit is provided on the downstream side of the station and temporarily stores the unrolled portion of the recording roll medium on which image formation in each color is to be performed.

Abstract: An image forming apparatus comprises an image forming paper supply section for supplying image forming paper having a paper base, an image forming section for forming a given image on the image forming paper supplied from the image forming paper supply section, an enclosure for enclosing at least the image forming paper supply section, and a cooling/dehumidifying unit for cooling the inside of the enclosure and condensing and aqueous components contained in the air inside the enclosure, thereby to dehumidify the inside of the enclosure.

Abstract: A method of coating an image-recorded surface of printing paper, which surface is formed by attaching a coloring agent to the printing paper in accordance with a recording signal. A coating agent comprising a hot-melt material is supported in the form of a thin film on a surface of a porous support member, and the coating agent in the form of the thin film is brought into contact with the image recorded surface and heated so as to transfer the hot-melt coating agent to the image recorded surface through pores of the support member in an amount corresponding to that used for coating.

Abstract: An apparatus for turning over copies supplied from a copying machine including first and second rollers arranged vertically to form a first nip portion through which copies are successively fed horizontally. A third roller is arranged beside the second roller to form a second nip portion therebetween, and a fourth roller is arranged beneath the third roller to form a third nip portion therebetween. A first sheet guide is provided which can be selectively projected into a copy feed path supplied from the first nip portion to divert the copy onto an inclined surface of a sheet guide member. An arcuate second sheet guide member is arranged between the second and third rollers in such a manner that a sheet fed from the first nip portion and diverted by the first sheet guide member into the sheet support member is fed from the second nip portion into the third nip portion.

Abstract: A closure cap adapted for fitment to a container having a threaded neck terminating in a rim which defines an open mouth. The closure may be formed of a molding of elastomeric material and includes a top wall having an annular skirt downwardly depending therefrom. The annular skirt has a closure thread formed about its inside surface which cooperates with the threaded neck of the container to achieve the fitment. The closure cap also contains a stepped projection formed generally at the inside juncture of the top wall and the annular skirt. The stepped projection has a vertical surface thereon. A flexible, hollow frusto-conical flange is formed integrally with the inner surface of the top wall and projects downwardly and outwardly therefrom. The flange is sufficiently thin and has sufficient length so as to enable it to bend around the outside radius of the rim.

Abstract: An apparatus for developing an electrostatic latent image formed on a charge retaining member is provided. The apparatus includes a magnetic conveyor having a magnet roller and a non-magnetic sleeve and applies a magnetic two-component developer comprising a toner and a magnetic carrier to the latent image while it conveys the developer, thus forming a toner image. A tuft of developer carried by the non-magnetic sleeve is brought into contact with a thin uniform layer of toner formed on a toner supply roller to cause the toner to be transferred into the developer under the action of a magnetic or an electrostatic attraction.

Abstract: A magnetic brush developing apparatus including a magnet roll assembly to apply a dry-type, two-component, magnetic developer having magnetic carrier particles and toner particles to an electrostatic latent image to be developed. The toner concentration of the developer is detected by projecting light toward ear-ups of the developer through a transparent plate which is arranged at such a position that the ear-ups of the developer held and carried by the magnetic roll assembly are brought in contact with the plate and by receiving light scattered by the developer through the transparent plate. The transparent plate is formed as a transparent plate to which is applied a bias voltage of such polarity that the charged toner is repelled by the plate.

Abstract: An apparatus for feeding sheets such as sheet like documents to be duplicated by an electrophotographic apparatus, said sheet like documents being successively supplied on a document table of the electrophotographic apparatus one by one manual operation of a user, comprises feeding means such as feeding rollers or a feeding belt mechanism, the feeding means being remained inoperative immediately after the supply of sheet, and means for initiating the feeding operation of said feeding means after a margin of time during which the user can correct the position and posture of the sheet.

Abstract: An optical image projector includes an array of optical elements which projects an erect positive image of an object onto an image receiving surface which is not parallel to the plane of the object. The array, the plane of the object and the image receiving surface are disposed in a manner such that the angles formed between the plane of the object and the image receiving surface on one hand and the optical axis of the array on the other are equal to each other and are disposed on the same side of the optical axis.

Abstract: An elastomer member with non-tacky surface treating layer is disclosed as well as a method of manufacturing same. An elastic adhesive layer is provided between a base elastomer member and a non-tacky surface treating layer which comprises hydrocarbon polymer, thereby improving the bonding strength of the surface treating layer and the resistance to organic solvent and crack resistance.

Abstract: An electrophotographic copying machine having a photosensitive drum is disclosed. Around the drum there are arranged a corona charger for uniformly charging the drum, an optical system for projecting an image of a document onto the uniformly charged drum to form an electrostatic charge latent image, a magnetic brush developing device for developing the latent image with a two component dry developing agent to form a toner image, a transferring device for transferring the toner image onto a record paper to form a duplicated copy, and a cleaning blade for collecting a residual toner on the drum to form a toner accumulation. When the cleaning blade is separated from the drum, the toner accumulation on the drum is transported toward the developing device as the drum continues to rotate. Just before the toner accumulation arrives at the developing device, the toner accumulation is collected by a toner scraper in the form of a thin plate into a toner hopper.

Abstract: An electrophotographic copying machine having a photosensitive drum is disclosed. Around the drum there are arranged a corona charger for uniformly charging the drum, an optical system for projecting an image of a document onto the uniformly charged drum to form an electrostatic charge latent image, a magnetic brush developing device for developing the latent image with a two component dry developing agent to form a toner image, a transferring device for transferring the toner image onto a record paper to form a duplicated copy, and a cleaning blade for collecting a residual toner on the drum to form a toner accumulation. When the cleaning blade is separated from the drum, the toner accumulation on the drum is transported toward the developing device as the drum continues to rotate and is collected into the developing device for the recovery. The cleaning blade is separated from the drum at a timing determined by a length of record papers to be used. A continuous duplication can be performed efficiently.

Abstract: A toner cleaning unit is provided for use in an electrophotographic copying machine to remove residual toner from a photosensitive drum after the transfer of a toner image onto a copy sheet and prior to formation of another electrostatic latent image thereon. The unit comprises a cleaning blade which is disposed for selective contact with the photosensitive drum to collect any residual toner, and an intercept member disposed adjacent to the blade for intercepting any toner which might freely fall from a pile of toner defined in the region of contact between the blade and the drum. By moving the blade away from the photosensitive drum, the pile of toner may be conveyed to a developing unit as the drum rotates.

Abstract: A copying apparatus of the moving document type capable of copying an optical image projected from an option or accessory device. The copying apparatus comprises an additional optical path adjacently provided to an optical path of the fixed optical system of the copying apparatus, and a shutter mechanism for opening and closing the additional optical path. The shutter mechanism is opened when the option device is added to the copying apparatus, thereby to directly project on the photosensitive member through the additional optical path an optical image formed by the option device.

Abstract: An electrophotographic process for forming a given number of copies of an original once formed on a photosensitive member including a conductive drum, a photoconductive layer applied on the drum and an insulating layer applied on the photoconductive layer. The photosensitive member is first subjected simultaneously to a uniform exposure and a primary charging in one polarity, and then is subjected simultaneously to an imagewise exposure and a secondary A.C. charging. Next, the photosensitive member is subjected to a secondary uniform exposure with a reduced light intensity to such an extent that the charge image has an electrostatic contrast which is about 60 to 90 percent of the maximum attainable value. During the formation of copies by repeated development and transfer, the photosensitive member is subjected to an additional uniform exposure to restore the deterorated charge image.

Abstract: An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively. The photosensitive member may be subjected to steps of imagewise irradiation simultaneously with charging, then inverse charging, then uniform exposure and the like to form a positive or a negative electrostatic latent image. The electrostatic latent image thus formed is repeatedly subjected to a developing and a transfer step to produce a number of copies.

Abstract: An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively.

Abstract: An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively.

Abstract: An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively.