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: A printing or copying apparatus of a type provided with a recording medium, operable device for forming an image on the recording medium, device for operating a first signal required for the timing operation of the operable device, keys for instructing to start or stop the execution of image formation, first control device controlling the operable device in accordance with the first signal, and which comprises a memory for storing a program for operation control of the operable device for image formation, and second control device for controlling the first control device in accordance with the key instructing device for controlling the execution of image formation and for controlling at least one of the operable devices, and which comprises a memory for storing a program for operation control of the first control device.

Abstract: This invention provides an image processing system comprising devices for producing image signals by scanning an original image, process units for generating video signals by processing the image signals, detector for detecting the coordinates of the original image and controller for storing the coordinate signals from the detecting means and for controlling the process units according to thus stored signals.

Abstract: An image forming apparatus having a device for setting numerical data related to image formation; a memory device for storing the numerical data set by the setting device; a device for executing the image formation in accordance with the numerical data stored in the memory device; a device for cancelling the numerical data stored in the memory device; and a device for inhibiting numerical data from being set by the setting device during an improper operational state of the apparatus.

Abstract: An image forming apparatus capable of interrupting a copying operation for a priority copying operation includes a first key for entering a desired number of copies, a second key for causing the start of a copying operation, a third key for interrupting a first copying operation initiated in accordance with operation of the first and second keys in order to enable a second or priority copying operation, a fourth key for stopping the first copying operation and control circuitry responsive to the various key operations. Operation of the third key to interrupt a copying operation causes a memory to store the number of repetitions needed to complete the first copying operation. The memory also stores the number of copies for the second copying operation upon operation of the first key after operation of the third key prior to the start of the first copying operation. Operation of the second key after completion of the second copying operation completes or commences the first copying operation.

Abstract: A reproduction apparatus has a reader for reading an original image by photoelectric conversion and a character generator in which image information from said reader and image information from said character generator are synthesized.

Abstract: A system for information transmission among plural stations, in which each station can transmit image signals not only to a printer as its own station but to another station for printing, and in which the transfer of communicating right among the stations is achieved in a smooth manner for realizing uniform distribution of the right to communicate among all stations.

Abstract: The present invention is directed to an image forming system comprising device for producing an image signal by scanning an original image, memory for storing the image signal, unit for receiving the image signal and reproducing an image on a material, and select for selecting a read address of the memory in a main scan direction and selecting a feed timing of the material in a sub-scan direction to form the image while shifting the original image to a desired position on the material.

Abstract: There is disclosed a reproduction apparatus having image information generator, image processor for image formation, controllor for controlling the function of said image information generator and image processor, and a bus line for common use for the transport of image information between said image information generator and said image processor and for the transport of instructions from said controllor.

Abstract: An image transmission system in which plural image processing devices are mutually connected in a loop through optical fibers for high-speed transmission of image information. The information to be transmitted is represented by an image packet and a command packet, both of which are transmitted through a common optical fiber.

Abstract: An image forming apparatus in which copying operations are controlled according to a program sequence. The apparatus has an input unit for entering copying instructions and sequence signals, a control unit for controlling active loads in response to signals from the input unit, and logic circuits connected to the control unit for controlling the active loads. The input unit can be used to input a specific instruction signal to set a predetermined data value in a data memory of the control unit, to instruct that a portion of the control program be omitted to permit the apparatus to operate without actually producing an image. Alternatively, or in addition to such feature, the control unit may have a sequence control program which omits specific malfunction detection functions, that program being used to permit performance of a test operation of the apparatus without the need for actually consuming recording sheets or other materials in the test.

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 printing or copying apparatus of a type provided with a recording medium, operable device for forming an image on the recording medium, device for operating a first signal required for the timing operation of the operable device, keys for instructing to start or stop the execution of image formation, first control device controlling the operable device in accordance with the first signal, and which comprises a memory for storing a program for operation control of the operable device for image formation, and second control device for controlling the first control device in accordance with the key instructing device for controlling the execution of image formation and for controlling at least one of the operable devices, and which comprises a memory for storing a program for operation control of the first control device.

Abstract: A printing or copying apparatus including a rotatable member, a number of processing devices for forming an electrostatic latent image on the rotatable member, for developing the latent image and for transferring the developed image from the rotatable member to an image transfer medium, a circuit for generating a series of clock signals in response to the rotation of the rotatable member, an element for repetitively generating control pulses in each process in accordance with the clock pulses, the control pulses determining the timing with which the processing devices are operated, and a controller for controlling desired operations of the processing devices in accordance with necessary ones of the control pulses.

Abstract: An image transmission system in which plural image processing devices are connected mutually in a loop form through optical fibers for high-speed transmission of image information. The information to be transmitted is represented by an image packet and a command packet, both of which are transmitted through a common optical fiber.

Abstract: An image forming apparatus capable of feeding or transporting recording medium of different sizes through the image forming path. A discriminating device determines whether or not a recording medium has reached a predetermined position in the transport path and a detecting member detects the recording medium a predetermined time thereafter to identify the size of the recording medium. If the recording medium is detected within the predetermined time, it is identified as being of a particular size. When the medium is detected during a time period different from the predetermined time period, the medium is identified as being of a size smaller than the particular size. The image formation operation is controlled as a function of the size identification of the recording medium.

Abstract: An image recording apparatus comprises first and second image recording units for respectively recording images on a recording medium. Each of the first and second recording units includes a generator for generating a horizontal synchronization signal. A transport unit transports the recording medium between the first and second recording units and first and second control units control the first and second recording units. Similarly, a third control unit controls the transport unit. A master control unit controls the first, second, and third control units according to the external inputs to the apparatus. More particularly, the master control unit includes a selector for selecting one of the horizontal synchronization signals generated by one of the generators included in the first and second recording units in response to an external input for selection of the recording units.

Abstract: An image processing apparatus has a reading device for reading an original, a conveying device for conveying the original to a predetermined reading position, a first detecting device for detecting the state of the original on the basis of the output of the reading device, and second detecting device for detecting the state of the original conveyed by the conveying device. The first detecting device is used to detect the state of the original when the conveying device is not used.

Abstract: A diagnostic program determines whether the machine is in a proper or improper operational state, and the scanning device is moved to a predetermined position in response to the positioning program after the entry of the key inputs by the entry program, and a copying operation is then enabled. The key entry program is executed after the machine starts, and the positioning program is executed before the start of the scanning device and after the key input entry, wherein the scan is inhibited from exposing the recording medium when the diagnostic program determines that the state of the machine is improper, or when the positioning program determines that the scanning device is not in the predetermined position. Also, the scan is enabled for exposing the recording medium when the diagnostic program determines that the state of the machine is proper and the positioning program determines that the scanning device is in the predetermined position.

Abstract: An image reading apparatus has a number of image sensors, a shading correction circuit, a linking circuit, and a CPU. The shading correction circuit has a RAM, a multiplication ROM, an address comparator, and a selector for correcting each pixel output. The linking circuit has shift memories for storing one-line image signals from the image sensors. The CPU controls addressing of the shift memories by means of address selectors and read/write counters. An image signal corresponding to a marker for linking output signals from the image sensors is replaced by an immediately preceding image signal. The adverse effect on shading correction of the marker for such linking is eliminated.