Abstract: An image forming apparatus includes an image bearing member, a container for containing a developer removed from the image bearing member, a detector for detecting an amount of developer removed from the image bearing member and contained in the container, and a failure detector for detecting a failure of the developer amount detector on the basis of the degree of use of the image bearing member and a detection result of the developer amount detector.

Abstract: In an image forming apparatus for forming an image by scanning a rotating photosensitive member with modulated light based on an image signal, a PLL circuit generates a high-frequency clock having a frequency n (n is an integer that satisfies n>2) times that of an oscillation output from a reference oscillating circuit. A frequency dividing circuit generates an image processing clock synchronized with the high-frequency clock and a detection signal from a scan light detecting mechanism. A latch circuit, a parallel/serial conversion circuit, and the like generate an image modulating signal by modulating image data on the basis of the high-frequency clock.

Abstract: A developer amount detecting apparatus includes a light emitting device, a light receiving device, threshold value setting device for setting a threshold value on the basis of an intensity of the light received by the light receiving device, and a detector for detecting an amount of a developer within the developer within the developer container on the basis of the threshold value and the intensity of the light received by the light receiving device.

Abstract: A method of controlling the intensity of scanning light in a color image forming apparatus in which a photosensitive member is scanned with light modulated according to an image signal, comprises: a first step of turning on a light source of scanning light in order to illuminate at least the whole of one main scanning line before image formation based on the first color component, and controlling the light source according to the intensity of scanning light; a second step of controlling the light source according to the intensity of scanning light during scanning of a non-image scanning area before the image formation based on the first color component and after the intensity control of the first step; and a third step of controlling the light source according to the intensity of scanning light during scanning of a non-image scanning area between two cycles of image formation based on a color component.

Abstract: A transmitting apparatus for inserting new information from a designated position of one channel and transmitting in a transmitting system for compressing a series of information signals by a non-prediction coding and a prediction coding which uses non-prediction coding information as reference information and for transmitting prediction coding information and the non-prediction coding information in accordance with a predetermined order, wherein the non-prediction coding information just after an insertion point and the past information than the non-prediction coding information are preserved, and a first predetermined number of information in the information to be inserted is prediction coded by using the non-prediction coding information just after the insertion point as reference information.

Abstract: An adjusting apparatus and method for adjusting a recording device such as a color laser printer or copier. The recording device has a light emitting device, an electrical resistance device, and a controlling device. The controlling device controls the emission period of the light emitting device according to the resistance of the electrical resistance device. The adjusting apparatus has a controller that controls the light emitting device of the recording device to be in a predetermined active state. The adjusting apparatus also has an adjusting device that adjusts the resistance of the electrical resistance device in accordance with the light emission intensity of the light emitting device. A recording device that is readily adjusted by such an adjusting apparatus is also disclosed.

Abstract: An encoding apparatus includes an encoding unit for encoding input video data, a storage unit for storing the video data encoded by the encoding unit, a control unit for controlling the amount of video data which has a format including a vertical blanking interval output from the encoding unit in accordance with the amount of data stored in the storage unit, and a multiplexing unit for multiplexing additional data with the video data encoded by the encoding means during the vertical blanking period of the video data.

Abstract: In an image forming apparatus in which scanning of a laser beam modulated by an image signal is performed, and a laser is forced to be turned on in a non-image period in line scanning of the laser beam, an interrupt request is issued to a microcomputer in response to a forced turn-on signal. In a routine that is called in response to the interrupt request, the level of the forced turn-on signal is checked. If no forced turn-on signal is generated, then acquisition of a detected laser beam intensity signal is inhibited. This ensures that the acquisition of the laser beam intensity signal is performed only when the laser is in a normal turn-on state. If a forced turn-on signal is generated, the laser beam intensity signal is acquired, and the laser beam intensity is adjusted according to the acquired value of the laser beam intensity signal.

Abstract: It is an object of the invention to efficiently transmit a video signal including a luminance signal and a chrominance signal. The invention includes: a first processor to extract the input luminance signal every first block which is constructed by a plurality of pixels, a second processor to extract the inputted chrominance signal every second block which is constructed by a plurality of pixels, and an encoder for encoding a predetermined macro block including the first and second blocks as a unit. Another object of the invention is to provide a movement compensating method whereby a circuit scale, a calculating time, and costs, in case of executing the movement compensation, can be reduced by using the correlation between the luminance signal and the chrominance signal.

Abstract: A transmitting apparatus for inserting new information from a designated position of one channel and transmitting in a transmitting system for compressing a series of information signals by a non-prediction coding and a prediction coding which uses non-prediction coding information as reference information and for transmitting prediction coding information and the non-prediction coding information in accordance with a predetermined order, wherein the non-prediction coding information after an insertion point and the past information than the non-prediction coding information are preserved, and a first predetermined number of information in the information to be inserted is prediction coded by using the non-prediction coding information after the insertion point as reference information.

Abstract: It is an object of the invention to efficiently transmit a video signal including a luminance signal and a chrominance signal. The invention includes a first processor to extract the input luminance signal every first block which is constructed by a plurality of pixels, a second processor to extract the inputted chrominance signal every second block which is constructed by a plurality of pixels, and an encoder for encoding a predetermined macro block including the first and second blocks as a unit. Another object of the invention is to provide a movement compensating method whereby a circuit scale, a calculating time, and costs, in case of executing the movement compensation, can be reduced by using the correlation between the luminance signal and the chrominance signal.

Abstract: While the electric power source is turned on, capacitor 1 is charged to a voltage EO by a direct current constant voltage supplier through transistor 4. When the electric power is disconnected, transistor 4 is switched off to discharge capacitor 1 through resistor R1. When the power source is turned on, the voltage of capacitor 1 is read by A/D converter to be produced and stored in CPU 12 memory. Then transistor 4 is switched on to charge capacitor 1 to the voltage EO. Then transistor 4 is switched off and transistor 5 is switched on to discharge capacitor 1 through resistor R2 and a counter stars. When the voltage of capacitor 1 reduces to the same voltage stored in the memory, transistor 5 is switched off to stop the counter and to obtain the counted value t2. Then transistor 4 is switched on to prepare for the next operation. The time lapse t1 after the power source being turned off is obtained by a formula (R1/R2).times.t2.

Abstract: A process for producing an easily handleable sheet molding compound which comprises impregnating glass fibers with a resin composition comprising (A) an unsaturated polyester having a hydroxyl value of 20 to 55 and an acid value of 5 to 20 with a hydroxyl value/acid value ratio of from 1.7 to 10, (B) a polymerizable monomer and (C) a polyisocyanate compound having not more than 20 carbon atoms excepting the carbon atoms of the isocyanate groups and selected from the group consisting of diisocyanates and polymethylenepolyphenyl isocyanates, the proportions of the unsaturated polyester (A) and the polyisocyanate compound (C) being such that the mole ratio of the hydroxyl groups of the unsaturated polyester (A) to the isocyanate groups of the polyisocyanate compound (C) is from 0.7 to 1.