摘要:
An image reading apparatus which has position deviated line sensors. The line sensors are formed by charge coupled devices which are arranged in two staggered rows. The signal from one of the charge coupled devices is delayed for a predetermined period corresponding to the distance between the rows, the speed of scanning and the reading density of the original. An actual timing deviation is calculated to delay one signal relative to the other so that the two signals will be output at the same time.
摘要:
An office machine is disclosed, which comprises a second (lower) unit and a first (upper) unit capable of being opened and closed with respect to the lower unit. A plurality of light-emitting elements and a plurality of light-receiving elements are provided in the lower unit, and a plurality of light-emitting elements and a plurality of light-receiving elements are provided in the upper unit. The control signal and data signal are fed to the light-emitting elements to be converted into optical on-off signal. The light-receiving elements receive the optical signal and convert it into electric signal which is fed to necessary parts. Control signal lines and data signal lines between the two units are thus replaced with an optical relay.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
A beam position detector output processor converts an output from a beam position detector into beam position information. A main control unit detects a total offset value of a plurality of operational amplifiers constituting the processor. The detected offset value is used to compensate a determination reference value used to control the sub-scanning position of a beam, or the beam position information obtained from the beam position detector output processor. As a result, the offsets of the operational amplifiers constituting the beam position detector output processor are compensated.
摘要:
When a monochromatic copy mode is to be executed, a control section sets a read mode in a scanner section so as to enable the scanner section to read an image at high speed by means of only a line sensor K, sets in an image processing section an image process that can print monochromatic image information, which is sent from the scanner section, with a single black color in the printer section, and sets in the printer section a monochromatic print mode that can print a black image at high speed, thereby controlling a monochromatic copy operation.
摘要:
Methods and apparatus for color signal compensation are disclosed. A quality of one type of signal is enhanced using a second type of signal, wherein the second type of signal has a higher quality than that of the unenhanced first type of signal. This may be used in an image forming apparatus for scanning a color image, and using higher-resolution monochrome signals to enhance the resolution of lower-resolution color signals.
摘要:
In a printer head constituted by a large number of linearly arranged LEDs, a lighting time designator receives image data at a period corresponding to one scanning period, designates a lighting time of each LED within one scanning period in accordance with image data corresponding to each LED and the lighting capacity of each LED, and outputs lighting time data. A lighting mode designator determines a lighting mode for designating a timing, within one scanning period, at which each LED is caused to emit light, on the basis of image data, and outputs lighting mode designation data. A light timing controller divides one scanning period into a plurality of time intervals and supplies the lighting time data to the printer head a plurality of number of times within one scanning period at the time intervals on the basis of the lighting mode designation data, thereby selectively causing the respective LEDs to emit light.
摘要:
An image forming apparatus has a printing side and a host side. Status signals are transmitted from the printing side to the host side and, according to the status signals, commands are transmitted from the host side to the printing side to execute printing operations. One exclusive line is added to status lines and used to inform the host side of changes in urgent statuses of the printing side.According to another aspect, an image forming apparatus has a printing side and a host side that transmits various data signals to the printing side. The printing side outputs a video clock signal whose frequencey changes in proportion to a recording density of the printing side. According to the video clock signal, the host side transmits a video data signal to the printing side.