Abstract: A plurality of process cartridges, each including an electrophotographic photosensitive drum, and a process device actable on the photosensitive drum, are detachably mountable to an electrophotographic image forming apparatus for forming an image of a recording medium. The image forming apparatus includes an opening and closing member; an intermediate transfer member or a recording medium bearing member provided in the opening and closing member such that the intermediate transfer member can face the process cartridges under a condition in which the opening and closing member is closed, and the intermediate transfer member can be separated from the process cartridges under a condition in which the opening and closing member is open; and a moving guide for holding the process cartridges.

Abstract: A programmable controller for controlling a multi-channel sequential processing of states based on a prescribed state transitions. The microcontroller has a state register for each of the channels for holding the state data to be processed in the channel in the next processing period, and upon receipt of a sampling clock and a channel processing request, executes a program to process the states in each of the channels based on the states data held in the associated state register. The microcontroller may execute a program having a complex sequence in a reduced number of steps.

Abstract: A switched capacitor includes two capacitors. During the charging period, the first capacitor is connected to an input potential and a first reference potential, and the second capacitor is connected to the input potential and a second reference potential. During the discharging period, those electrodes of the first and second capacitors which have been connected to the input potential are connected to a first and a second reference potential, respectively, and those which have been connected to the first and second reference potentials, respectively, are connected to an output terminal. The switched capacitor also has a circuit that is connected to the first and second reference potentials to produce an intermediate potential therebetween so that, before the charging period, the first capacitor is connected to the intermediate potential and the first reference potential and the second capacitor is connected to the intermediate potential and the second reference potential.

Abstract: A relay apparatus requests entry of a pager number of a person, when the person either accessed a pager through dialing or accessed the relay apparatus through a telephone line. If the pager number is successfully recognized, the relay apparatus informs the person who made the access of the state of messages stored corresponding to the recognized pager number, and requests instruction for a next operation through the telephone line. If replaying is instructed, a stored message is replayed. If recording is instructed, a message of the person who made the access is recorded to a storage box for a person addressed, and a pager of the person addressed is called up afterwards. The relay apparatus operates in a similar way when the person addressed makes an access.

Abstract: In the present invention, the voice signals are A/D converted at a predetermined period of t and are divided into two frequency sides, in that a high frequency side and a low frequency side, and the high frequency side voice signals are then converted into data having a lower sampling frequency than that of the A/D conversion after performing a voice tone level conversion toward a lower frequency side and without performing thinned out sampling of the high frequency side voice signals. On the other hand, the sampling data of the low frequency side are thinned out, therefore equivalently the sampling frequency is reduced. Thereby, the amount of data to be stored is reduced and the reduced data are stored in a memory.

Abstract: A multichannel ADPCM compression and expansion device includes N sets of input and output interfaces; an ADPCM compression and expansion device which expansively converts data of K bits in a form of ADPCM signals into PCM signals of M bits in response to a first control signal and outputs the same and compressively converts data of M bits in a form of PCM signals into ADPCM data of K bits in response to a second control signal; and a control unit which divides one signal transmission slot interval into N sections and successively selects the N sets of input and output interfaces in a predetermined order during respective divided intervals divided into N sections and connects to the ADPCM compression and expansion device, and successively performs, while separating the divided interval into a former half and a latter half, a first control which generates the first control signal and sends the data of K bits to the ADPCM compression and expansion device and then returns the expansively converted M bit data to t