Abstract: In a support device for a direct drive electric motor found in apparatuses such as copy machines, printers, etc., employing the method of driving a driven shaft by an output shaft of the motor in direct connection thereto, the motor body is supported by the direct connection of the output shaft of the motor with the driven shaft, and a rotation preventing plate is provided for preventing the motor body from rotating about its output shaft, as the rotation preventing plate is in engagement with a fixed member.

Abstract: Image recording apparatus characterized by being equipped with the carriers to carry the recording sheet on which recording is made, recording heads, container to accommodate the recording heads, carrier guides which are so arranged as to place the carriers in between such carrier guides and the recording heads wherein rollers are provided to the carrier guides at the point where the carrier enters and leaves.

Abstract: An image forming apparatus for forming superimposed images has a plurality of image holders each respectively for holding an image, a plurality of image forming stations for forming an image on the holders, and an adjusting device for adjusting positions of images formed on image holders except for that image station which is designated to be a standard station for adjusting or which is not used of image formation.

Abstract: There is disclosed an ink jet recording apparatus capable of recovery operation of the ink jet recording head in secure manner. For this purpose the apparatus is provided with an endless belt for transporting a recording sheet by electrostatic attraction; a charger for the endless belt; a cleaner for the endless belt; a recording head unit with plural full-line ink jet heads; a recovery unit having a cleaning blade and an ink absorbing member movable between a recovery position and a stand-by position; and a mechanism for moving the head unit to a recording position, a recovery position or a recovery unit introducing position and moving the recovery unit in relation to the recording head unit; in which the head unit, recovery unit and moving mechanism are integrated as a detachable unit.

Abstract: An image forming apparatus in which a recording material having an unfixed image formed thereon by an image forming device is conveyed to a fixing device having a pair of rotatable members by a conveyor and the recording material is nipped and conveyed by the pair of rotatable members so that the unfixed image is fixed on the recording material. The pair of rotatable members is selectively rotatable at a first peripheral speed lower than the speed at which the conveyor conveys the recording material and a second peripheral speed higher than the first peripheral speed.

Abstract: An image forming apparatus has a plurality of image forming stations capable of forming different images which are to be correctly registered and superimposed. Elimination of possible image misregistration in each image station is executed on the basis of the result of detection of register marks which are formed by each image forming station. The correction is executed at a timing which is independent from image forming sequences performed by each imgae forming station in accordance with image signals, e.g., during warming-up of the apparatus after the initial application of the power immediately after the input of image forming operation start instruction through a start key, or after completion of production of a predetermined number of copies counted from the last misregistration correcting operation.

Abstract: An image forming apparatus for forming superimposed images includes a plurality of image forming devices each for forming a different image and a registration mark, corresponding to the position of the associated image, on an image transferring medium. The registration mark is formed on a transparent part of the medium and is illuminated from below. A detector above the medium detects the position of the shadow of the registration mark for each image and the result of detection is used to adjust the position of at least one image forming device to produce proper registration between the images formed by the respective image forming devices.

Abstract: There is provided a multiimage forming apparatus for forming image data onto photo sensitive drums by an electrophotographic system. This apparatus comprises: an image forming circuit to form different images onto the photo sensitive drums; a transfer device to transfer the images on the drums onto the same transfer paper; a conveying belt to convey the transfer paper; a control circuit to control the image forming circuit so as to form registration marks to match the positions of the images onto the drums; CCD detectors to detect the recording positions of the marks; and a correcting circuit to correct at least two of the positional direction in the conveying direction of the belt, the positional deviation in the direction perpendicular to the belt conveying direction, the magnification of the image, and the inclination of the image on the basis of the detection outputs of the detectors.

Abstract: The invention relates to an image forming apparatus comprising a belt-shaped member for feeding a sheet, at least one image forming means arranged in confronting relation to the belt-shaped member, a separation means for carrying out the separation between the belt-shaped member and the image forming means by shifting at least one of the belt-shaped member and image forming means, a drive means for driving the belt-shaped member, a cleaning means for cleaning the belt-shaped member, a signal generating means for emitting a signal, and a control means for separating the belt-shaped member from the image forming means by controlling the separation means and for then rotating the belt-shaped member at a predetermined speed during the image formation by controlling the drive means.

Abstract: An image forming apparatus such as a laser beam printer has a plurality of movable image carrying members such as photosensitive drums, an image forming member such as a laser beam scanner capable of forming on the image carrying members images of different colors correspoding to image information, and transfer devices for sequentially transferring the image carried by the image carrying members to an image receiving member such that the image of different colors are superposed. The image receiving member may be copy paper or an overhead projector sheet, and is fed by a feeding device in the form of an endless belt. A lifting device is provided to move the feeding device from an operative position to at least one retracted position in response to detection of jamming or when an image receiving member having a large heat capacity is used.

Abstract: An electrographic apparatus includes a plurality of photosensitive members, a plurality of laser projecting devices for projecting deflecting laser beams for scanning the photosensitive members, the laser projecting devices being provided for the respective photosensitive members, mirrors for receiving the laser beams projected from the laser projecting devices and reflecting them in a substantially reverse direction to scan the photosensitive members with the reversed laser beams, the mirrors being provided for the respective laser projecting devices. The apparatus may further includes adjusting devices, provided for the respective mirrors, for adjusting relative positions between the photosensitive members and associated ones of the mirrors.

Abstract: A superimposed image forming apparatus, includes a plurality of electrophotographic photosensitive drums, toner image forming devices, provided for the respective photosensitive drums, for forming toner images on the respective photosensitive drums, image transfer devices, provided for the respective photosensitive drums, for transferring the toner images formed on the photosensitive drums onto a transfer material at respective image transfer stations, conveying devices for conveying the transfer material sequentially through the respective image transfer stations, and adjusting mechanisms for adjusting inclinations of rotational axes of the photosensitive drums. Thus, image inclination of a resultant image can be corrected by adjusting the inclination of the axis of the drum by an amount which is a half of the image inclination.

Abstract: In an image forming apparatus wherein a plurality of developing devices are carried on a rotating body and the rotating body is rotated to thereby move desired one of the developing devices to a predetermined developing position and develop a latent image formed on a latent image bearing member in accordance with image information, an image forming operation is permitted only when all of the developing devices are carried on the rotating body.

Abstract: A toner supplying system for use in combination with a developing device (100) of the type having a conveyor means (300) carrying a plurality of developing units (101) such as to bring the desired developing unit to the developing position for the development of a latent image on an image carrying member (1). The toner supplying system comprises a hopper (201) disposed outside the developing device, a shaft (310) provided in the toner conveyor means, a toner transportation means (202) for transporting the toner from the hopper to the shaft, and a toner passage means (310, 350) through which the toner is supplied from the shaft to respective developing units. The toner passage means includes annular chambers (351) formed between the hollow shaft (310) and an intermediate pipe (350). The annular chambers are separated axially by partition sealing means (354).

Abstract: A color image forming apparatus wherein a plurality of developing devices or units are supported on a supporting member or turret which is rotatable to revolve the developing devices to move a desired developing device to a developing station where the developing operation is effected with the desired one of the developing devices so that a color image is formed. The position of the developing device is detected, and the detected position is compared with a datum of a target movement scheme predetermined for the developing apparatus. A driving motor for the apparatus is controlled to correct the difference therebetween which is the result of the comparison.