Abstract: An image forming agent storage unit includes a body portion and a pair of a protrusion portion. The body portion extends in an insertion direction in which the image forming agent storage unit is inserted into an image forming apparatus. The pair of a protrusion portion is disposed on an outer face of the body portion and extends along the insertion direction. An approximate geometrical center of gravity of a cross-sectional shape of the body portion is disposed between the pair of the protrusion portion. One of the protrusion portions is disposed on an upper right angle position between an upper portion of the body portion and a right portion of the body portion and the other of the protrusion portions is disposed on a lower left angle position between a lower portion of the body portion and a left portion of the body portion.

Abstract: An image forming agent storage unit includes a body portion, grip portion, a movement preventing member. The body portion exists to extend in a direction in which the image forming agent storage unit is mounted in an image forming apparatus. The grip portion is disposed on an operator's side of the body portion in the direction in which the image forming agent storage unit is mounted in the image forming apparatus, so that the grip portion can be gripped by a hand. The movement preventing member is disposed in a top portion of the grip portion. The movement preventing member is caught on the image forming apparatus. And, the movement preventing member prevents the image forming agent storage unit mounted in the image forming apparatus from moving in a direction in which the image forming agent storage unit is pulled out.

Abstract: An image forming agent storage device includes an image forming agent storage body that is inserted into an insertion part, an opening-and-closing member, an engagement mechanism and an engagement release prevention mechanism. The image forming agent storage body is formed with a discharge port. The engagement mechanism includes an engagement part being provided in the image forming agent storage body and an engaged part being provided in the opening-and-closing member and being capable of engaging with the engagement part. The engagement release prevention mechanism prevents that a state where the engagement part and the engaged part can engage with each other is released due to an event that a front side of the opening-and-closing member moves relative to the image forming agent storage body so as to slant in a direction away from a position where the engagement part and the engaged part are provided.

Abstract: An image forming agent storage unit includes a body portion, grip portion, a movement preventing member. The body portion exists to extend in a direction in which the image forming agent storage unit is mounted in an image forming apparatus. The grip portion is disposed on an operator's side of the body portion in the direction in which the image forming agent storage unit is mounted in the image forming apparatus, so that the grip portion can be gripped by a hand. The movement preventing member is disposed in a top portion of the grip portion. The movement preventing member is caught on the image forming apparatus. And, the movement preventing member prevents the image forming agent storage unit mounted in the image forming apparatus from moving in a direction in which the image forming agent storage unit is pulled out.

Abstract: An image forming agent storage unit includes a body portion and a pair of a protrusion portion. The body portion extends in an insertion direction in which the image forming agent storage unit is inserted into an image forming apparatus. The pair of a protrusion portion is disposed on an outer face of the body portion and extends along the insertion direction. An approximate geometrical center of gravity of a cross-sectional shape of the body portion is disposed between the pair of the protrusion portion. One of the protrusion portions is disposed on an upper right angle position between an upper portion of the body portion and a right portion of the body portion and the other of the protrusion portions is disposed on a lower left angle position between a lower portion of the body portion and a left portion of the body portion.

Abstract: An image forming agent storage device includes an image forming agent storage body that is inserted into an insertion part, an opening-and-closing member, an engagement mechanism and an engagement release prevention mechanism. The image forming agent storage body is formed with a discharge port. The engagement mechanism includes an engagement part being provided in the image forming agent storage body and an engaged part being provided in the opening-and-closing member and being capable of engaging with the engagement part. The engagement release prevention mechanism prevents that a state where the engagement part and the engaged part can engage with each other is released due to an event that a front side of the opening-and-closing member moves relative to the image forming agent storage body so as to slant in a direction away from a position where the engagement part and the engaged part are provided.

Abstract: A video signal recording and reproducing apparatus replaces at least one of a group of a predetermined number of frames of a main signal from one video camera to a sub signal frame from another video camera on the same time base as that of the main signal and records, and upon reproduction, executes the recording video signal by an ordinary reproducing process and reproduces and displays the main signal and still reproduces the intermittent sub signal frames, thereby reproducing the sub signal like a frame sending. The recording and reproducing apparatus sets one of the video signals which are obtained from two or more video cameras into the main signal and sets the other remaining video signals into the sub signals and records those main and sub signals and conveniently distributes those signals and reproduces.

Abstract: An operational amplifier is applied with an audio signal at a non-inverting terminal thereof for amplifying the audio signal. A crosstalk cancelling circuit is provided for reducing the output of the operational amplifier to a level of crosstalk generated at the non-inverting terminal. The output of the crosstalk cancelling circuit is applied to an inverting terminal of the operational amplifier so as to cancel the crosstalk.

Abstract: An apparatus for recording high resolution image data, which is inputted from the external at a predetermined timing, to a recording medium of random access type, is provided with: a memory for storing at least one high resolution image data by a unit of picture plane on the basis of a record control signal; a device coupled to the memory, for dividing and converting the high resolution image data stored in the memory into a plurality of standard image data corresponding to a standard television system one after another; a recording device coupled to the dividing and converting device, for recording the plurality of standard image data to the recording medium by a unit of field or frame; and a control device for generating the record control signal, which corresponds to the predetermined timing of the high resolution image data.

Abstract: An adaptive video recording system for selectively recording a plurality of video signals outputted from a plurality of video sources one after another, is provided with: a recording medium, to which at least the video signals and recording information data related to the video signals, are recorded by a field or frame unit in a randomly accessible manner; a recorder for recording the video signals and the recording information data related to the video signals, to the recording medium; and a switcher, coupled to the video sources and the recorder, for switching and outputting the video signals from the video sources to the recorder.

Abstract: Stereo audio signals of right and left channels are inputted to a stereo surround system. The stereo surround system is provided with: a right side speaker group including at least two speakers arranged vertically; and a left side speaker group arranged at a left side of the right side speaker group, and including at least two speakers arranged vertically. The stereo surround system is further provided with a process device, coupled to the right side speaker group and the left side speaker group, for processing the inputted stereo audio signal of the right channel to generate at least two kinds of the surround signals to the right side speaker group, and for processing the inputted stereo audio signal of the left channel to generate at least two kinds of the surround signals to the left side speaker group.

Abstract: A receiver includes a plurality of antennas, a selection switching unit for selectively switching between the plurality of antennas to output one of the respective output signals of the plurality of antennas having the largest induced voltage, and a unit for converting the selected one antenna output signal to an audio signal to be outputted as an output signal of the receiver. The receiver further includes a muting control unit for detecting the level of the induced voltage of the selected antenna output signal so as to output a muting control signal when the detected level of the induced voltage becomes smaller than a predetermined value, and a muting unit for muting the audio signal for a predetermined time on the basis of the muting control signal. The selection switching unit performs its antenna switching operation on the basis of the muting control signal.