Abstract: An image forming apparatus including a photoreceptor having an image carrying surface, first and second exposing devices to expose the image carrying surface to form first and second latent images, and first and second developing devices to develop the first and second latent images to form first and second toner images on the image carrying surface. The first exposing device has a light source which emits a light beam, a deflector which deflects the light beam on the image carrying surface to form a scanning line, a first optical system to focus the light beam, and a first adjustor which adjusts an alignment between the first optical system and the image carrying surface for correcting variation of lateral magnification in the primary scanning direction of the optical system so that the first toner image and the second toner image are superposed on a recording sheet.

Abstract: The image forming apparatus has light beam passing from the deflector directly to the image carrying surface. The light beam is not bent to the image carrying surface. The apparatus detects movement of optical system and it uses the detected movement to correct the inclination of the optical system.

Abstract: An image forming apparatus comprises a photoreceptor having an image carrying surface, an exposing device to imagewise expose the image carrying surface to form a latent image, and a developing device to develop the latent image to form a toner image on the image carrying surface, wherein the exposing device is composed of a light source to emit a light beam, a deflector to deflect the light beam so as to form a scanning line with the light beam on the image carrying surface, a cylindrical lens provided between the deflector and the image carrying surface and to focus the light beam on the image carrying surface, and an adjusting mechanism to adjust an inclination of the scanning line and to adjust variance in magnification of an image on the scanning line.

Abstract: An image forming apparatus comprises a photoreceptor having an image carrying surface, an exposing device to imagewise expose the image carrying surface to form a latent image, and a developing device to develop the latent image to form a toner image on the image carrying surface, wherein the exposing device is composed of a light source to emit a light beam, a deflector to deflect the light beam so as to form a scanning line with the light beam on the image carrying surface, a cylindrical lens provided between the deflector and the image carrying surface and to focus the light beam on the image carrying surface, and an adjusting mechanism to adjust an inclination of the scanning line and to adjust variance in magnification of an image on the scanning line.

Abstract: An image forming apparatus has a photoreceptor having a image carrying surface, an exposing device to imagewise expose the image carrying surface to form a latent image, and a developing device to develop the latent image to form a toner image on the image carrying surface. The exposing device has a light source which emits a light beam, a deflector which deflects the light beam to form a scanning line with the light beam on the image carrying surface, a cylindrical lens between the deflector and the image carrying surface which focuses the light beam on the image carrying surface, and an adjusting mechanism which adjusts an inclination of the scanning line and adjusts variance in magnification of an image on the scanning line.

Abstract: A color image forming apparatus is provided wherein toner images formed on a plurality of image carriers are primarily transferred onto an intermediate transfer object, and then, are secondarily transferred onto a recording sheet. The color image-forming apparatus includes an intermediate transfer member, a longitudinal direction of which is arranged in substantially a vertical direction, and onto which toner images formed on image carriers are sequentially transferred in such a manner that the toner images overlap relative to each other so as to form a color toner image on the intermediate transfer member. In addition, a transferring device is provided to transfer the color toner image formed on the intermediate transfer member onto a transfer sheet. The intermediate transfer member and the image carriers are integrated into a rack, and the rack is drawable in substantially a horizontal direction with respect to a mainframe of the color image-forming apparatus.

Abstract: The present invention concerns a color image forming apparatus wherein toner images formed on a plurality of image carriers are primarily transferred onto an intermediate transfer object, and then, are secondarily transferred onto a recording sheet.

Abstract: The present invention concerns a color image forming apparatus wherein toner images formed on a plurality of image carriers are primarily transferred onto an intermediate transfer object, and then, are secondarily transferred onto a recording sheet.

Abstract: An image forming apparatus comprises a photoreceptor having an image carrying surface, an exposing device to imagewise expose the image carrying surface to form a latent image, and a developing device to develop the latent image to form a toner image on the image carrying surface, wherein the exposing device is composed of a light source to emit a light beam, a deflector to deflect the light beam so as to form a scanning line with the light beam on the image carrying surface, a cylindrical lens provided between the deflector and the image carrying surface and to focus the light beam on the image carrying surface, and an adjusting mechanism to adjust an inclination of scanning line and to adjust variance in magnification of an image on the scanning line.

Abstract: The present invention concerns a color image forming apparatus wherein toner images formed on a plurality of image carriers are primarily transferred onto an intermediate transfer object, and then, are secondarily transferred onto a recording sheet.

Abstract: An image forming apparatus is provided which includes an image carrying member, a plurality of charging devices for charging the image carrying member, a plurality of laser exposing units for scanning the charged image carrying member with laser beams so as to form latent images at a predetermined position on the image carrying member, a plurality of developing devices for developing the latent images so as to form toner images, and a transfer section for transferring the toner images onto a sheet. The plurality of laser exposing units are vertically arranged and fixed to each other as a single body so that each laser beam of the laser exposing units is parallel to another laser beam with a predetermined interval.

Abstract: An image forming apparatus is provided which includes a first paper cassette provided in a lower portion of a main body of the image forming apparatus for housing recording papers therein and for feeding the recording papers to the main body through a first paper feeding path, and a second cassette provided below the first paper cassette for housing recording papers therein. At least a part housing the recording papers of the first paper cassette is capable of being pulled out in a pulling out direction which is in a feeding direction of the recording papers from the first cassette, and at least a part housing the recording papers of the second paper cassette is capable of being pulled out in the same pulling out direction of the first paper cassette.

Abstract: A toner container for use in an image forming apparatus having a toner receiving section, includes a cylindrical container body in which toner is stored, the cylindrical container body having a toner discharging end and provided with a spiral rib provided on its inner circumferential surface so that toner is conveyed toward the toner discharging end by the spiral rib when the cylindrical container body is rotated, the cylindrical container body further having a cylindrical portion with a discharging port on the toner discharging end; and a sleeve member mounted around the cylindrical portion so that the discharging port is closed by the sleeve member, the sleeve member movable in the axial direction of the cylindrical portion so that when the toner container is attached to the toner receiving section of the image forming apparatus, the sleeve member is moved so as to open the toner discharging port.

Abstract: A revolution control for a sun and planetary gear system including supporting members for the planetary gears which are revolvable around the same gear and a cam mechanism engaging a portion of the supporting member. The cam mechanism includes a cam shaft carrying a plurality of cams and there is a driving gear engaging the cam shaft. Also, two transmission gear trains present permit the driving gears to operate in either direction while still driving the toner replenishers in the same direction.

Abstract: A developer in use with an image forming apparatus. The developer includes: a developing sleeve which rotates and holds toner on itself so as to develop a latent image on a photoreceptor with the toner; a driving motor for generating a rotational driving force; a drive transmission for transmitting the rotational driving force of the driving motor to the developing cartridge in which the drive transmission has a transmitting state and an untransmitting state; and a shock easing controller or member for easing a shock of transmission of the rotational driving force to the developing sleeve in the transmitting state, in which the shock easing controller or member is provided in at least one of the driving means and the drive transmission means.