摘要:
A scanning time after a detection signal from a first laser beam detection sensor is inputted until a detection sensor from a second laser beam detection sensor is inputted by a counter, flip-flops, a corrected write frequency f1 is computed by a control circuit from a value T1 corresponding to the measured scanning time and a function F (T1) for computing a correction factor using the basic write frequency f0 and the value T1 above and through the equation of "f1=f0.times.F (T1)", and the write clock frequency is corrected by a clock generation circuit, thus the write clock frequency being controlled according to a change in the scanning speed.
摘要:
An image input and output apparatus includes an image input unit, a memory, an image output unit, a first internal memory unit to internally store the image data input from an outside of the image output unit, a first deletion unit to delete the image data from the first internal memory unit before reading out the image data, a second deletion unit to delete the image data from the first internal memory unit after reading out the image data, an identification unit to identify a characteristic of the image data, and a selection unit to select the first or second deletion unit to delete the image data stored in the first internal memory unit according to the characteristic of the image data input from the outside of the image input unit.
摘要:
An image forming apparatus includes an image input device configured to input image data, a storage device configured to temporarily store the image data inputted by the image input device, an image output device configured to output the image data read from the storage device, and a deletion device configured to delete the image data stored in the storage device.
摘要:
A multi-beam light source device which can be used in an optical scanning device has less optical cross-talk and an improved stability in frequency response. The multi-beam light source device comprises a semiconductor laser array having a plurality of light emitting sources, a light receiving element array having a plurality of light receiving elements and a half mirror splitting a light beam emitted by the semiconductor laser array into at least two split light beams. A light converging unit is provided for converging one of the split light beams at a predetermined focal point. The light receiving element array is positioned at the focal point of the light converging unit for receiving the concentrated one of the split light beams. A controlling circuit is provided for controlling an output of the semiconductor laser array in accordance with the amount of light received by the light receiving element array. Optical cross-talk generated between the split light beams emitted by adjacent ones of the light emitting sources is suppressed by an optical cross-talk suppressing unit.
摘要:
An image processing apparatus including an image storage for storing image data is disclosed. A first managing section generates first management information for managing the image data, which are to be stored in the image storage, on a single unit image basis. A second managing section generates second management data for managing one or more unit images as a single image file. An image data managing method for the image processing apparatus is also disclosed.
摘要:
An image processing apparatus is provided that includes a primary memory unit to buffer image data, a secondary memory unit to store the image data transferred from the primary memory unit, and a memory control unit that controls both memory units. The memory control unit transfers, if a plurality of items of image data are to be transferred, at least one of the items of image data divisionally from the primary memory unit to the secondary memory unit. When image data are transferred from the primary memory unit to the secondary memory unit, the memory control unit transfers a unit image either in a block or divisionally in multiple parts, and the memory control unit simultaneously transfers a plurality of images divisionally, the images being divided into varying numbers of parts so that each input and output of an image can evenly share the time of the secondary memory unit and a plurality of images can be efficiently transferred in parallel in a short time.
摘要:
An image processing apparatus including an image storage for storing image data is disclosed. A first managing section generates first management information for managing the image data, which are to be stored in the image storage, on a single unit image basis. A second managing section generates second management data for managing one or more unit images as a single image file. An image data managing method for the image processing apparatus is also disclosed.
摘要:
A writing unit writes received image data into a buffer. A copying unit copies the image data from the buffer to a storing unit. A control unit controls the copying unit so as to stop copying of the image data from the buffer to the storing unit, and erases the image data from the buffer when, for example, a stop instruction is received.
摘要:
An image forming apparatus includes a plurality of memory devices, each including at least one image memory which stores image data. A controller controls input and output operations for the image data relative to the at least one image memory. An image reading device generates image data by scanning and reading an original document. At least one data input device inputs image data generated by an external source. A plurality of input paths transmit the image data generated by the image reading device and the image data input by the at least one data input device. An image memory switching device connects the plurality of input paths to the plurality of memory devices, receives the image data generated by the image reading device and the image data input by the at least one data input device, and switches the plurality of memory devices to transmit consecutive image data, which is consecutively sent through one of the plurality of input paths, to a same memory device among the plurality of memory devices when the image memory switching device receives the image data and the image data through the plurality of input paths.
摘要:
An image forming apparatus for detecting and eliminating avoidable image reading operations includes a scanner for reading an original document, a memory for storing read image data, a printer for forming an image in accordance with the image data read from the memory, a ten-key pad for inputting instructions specifying a total number of sets of copies to be made, various functions to be performed by the apparatus for changing how the copying is performed and a sample set command by which the apparatus enters into a sample set command mode wherein one copy of the original document is output as a sample copy, and a controller for determining whether to use the image previously stored in the memory to output the rest of the total number of sets of copies to be made or performing an operation of reading the original document again depending upon types of functions input via the ten-key pad during the sample set command mode.