Abstract: An image processing system of the invention has a reader which reads out an image of an original, a page memory which stores image information of the original in the form of electric signals, a disk memory which stores part or all of the image information in the disk memory and also stores image processing information, an image processing section, a digitizer for the operator to input the image processing information, a CRT which displays input information or corrections in convesation language, a DMA controller, and a printer. The image processing system of the invention is capable of DMA transfer without the intermediacy of a CPU. Fewer addresses are required for readout of the image information from the memory, and high speed image processing is achieved.

Abstract: A recording apparatus comprises a source for generating a beam to record images on a recording medium by using the beam and makes fine adjustment of the recording position of the beam for obtaining high-quality images.

Abstract: An image processing system of the invention has a reader which reads out an image of an original, a page memory which stores image information of the original in the form of electric signals, a disk memory which stores part or all of the image information in the disk memory and also stores image processing information, an image processing section, a digitizer for the operator to input the image processing information, a CRT which displays input information or corrections in conversation language, a DMA controller, and a printer. The image processing system of the invention is capable of DMA transfer without the intermediacy of a CPU. Fewer addresses are required for readout of the image information from the memory, and high speed image processing is achieved.

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: A safety device for use in a recording apparatus controls the on/off operation and prevents the malfunction of motors for driving a gear flange to rotate a light sensitive drum and for driving an actuating gear and other driving members in accordance with a signal indicative of the reference rotational frequency received from an oscillator and a signal indicative of the rotational frequency of each motor. A motor control circuit is used including motor drivers for controlling the operation of said motors and a fault detection circuit for detecting the malfunction of said motors by comparing an adder output indicative of said motors' rotational frequencies with threshold values in a comparator, thereby ascertaining the long-term use of the light sensitive drum.

Abstract: An image processing apparatus comprises a image data generator, a pulse width modulated signal generator for generating a pulse width modulated signal to modulate a beam in accordance with an image data generated by the image data generator, and a control signal generator for generating a control signal to control an intensity of the beam in accordance with the image data generated by the image data generator.

Abstract: An image processing system of the invention has a reader which reads out an image of an original, a page memory which stores image information of the original in the form of electric signals, a disk memory which stores part or all of the image information in the disk memory and also stores image processing information, an image processing section, a digitizer for the operator to input the image processing information, a CRT which displays input information or corrections in conversation language, a DMA controller, and a printer. The image processing system of the invention is capable of DNA transfer without the intermediacy of a CPU. Fewer addresses are required for readout of the image information from the memory, and high speed image processing is achieved.

Abstract: A control device for use in maintaining a constant driving speed in various rotational objects such as a photosensitive drum, etc. for an electrophotographic reproduction apparatus, the control device being constructed with a driving device; a detecting device to sense a driving condition of the driving device; first and second control devices to drive control the driving device; and a change-over device to change the drive-control of the driving device from the first control device over to the second control device in accordance with an output from the detecting device, thereby quickly bringing the driving condition of the rotating object back to its original controlled condition, even under abrupt variations in the load imposed thereon.

Abstract: An image reader including a control apparatus adapted to control a drive motor such that an image scanner can be moved at a desired speed in its forward stroke and at a higher speed in its backward stroke.

Abstract: An image processing method comprises the steps of storing document image data in a memory, operating on input character image data, and processing one of the document image data and the character image data in such manner as to reproduce the other image data in an area other than the area allocated for reproducing the one image.

Abstract: An image reading apparatus with plural linear image sensors arranged along the main scanning direction, in which plural markers positioned outside the image area are simultaneously read by the image sensors for facilitating the alignment of the image sensors.

Abstract: An image scanning apparatus comprises a scanner for scanning an original sheet, a measuring section for measuring a time required for the scanner to move from a first position, e.g. a home position of the scanner, to a second position, e.g. a leading edge position of a record paper, and a timing circuit for determining a start timing of a scan of the scanner in accordance with the time measured by the measuring section.

Abstract: A control unit for a movable member comprises a motor for driving the movable member, a speed detector for detecting a rotating speed of the motor, a reference signal generator, amplifiers of different gains for amplifying a signal representing a phase difference between a speed signal from the speed detector and a reference signal from the reference signal generator, a selector for selecting one of the outputs of the amplifiers in accordance with the velocity signal and the reference signal, and a driver for driving the motor by the selected amplifier output.

Abstract: An image information transmission system comprises a plurality of image information processing units for processing image information, an image information transmission line and a control information transmission line independent from the image information transmission line for transmitting control information related to the processing of the image information processing units. The control information can be transmitted even during the transmission of the image information.

Abstract: A data transmission system has a data converter for converting character code data into dot image data, and/or vice versa. The data converter has a memory and a pattern generator and/or a character recognition apparatus to perform such conversion. The system allows data transmission in either form with a smaller number of lines to connect respective stations, and also allows direct communication between the stations.

Abstract: A video signal processing apparatus for encoding video into binary signals employs dither coding. The apparatus comprises a device for setting a plural number of divided areas of an original image and a processing circuit for processing video signals corresponding to the respective divided areas using different dither patterns.