Abstract: Provided is a charge/discharge protection circuit, which has a simple circuit configuration using a double-throw semiconductor switching device and is capable of recovering from a state where charging/discharging is inhibited with the double-throw semiconductor switching device being turned off. The charge/discharge protection circuit includes a charge/discharge control circuit which is provided with a second terminal for detecting which one of a charger and a load is connected to an external terminal. The second terminal has a first resistor and a first switch connected in series between a power source, and has a second resistor and a second switch connected in series between a ground.

Abstract: Provided are a battery state monitoring circuit in which charging of a secondary battery in an over-charge detection state is prevented to improve safety, and a battery device including the battery state monitoring circuit. A circuit for consuming a leakage current is provided in the battery state monitoring circuit to prevent the secondary battery from being charged with the leakage current.

Abstract: The present invention provides a voltage regulator capable of causing a large output current to flow during a heavy load operation, and of making a leakage current from output transistors small during a light load operation. The voltage regulator includes a plurality of output transistors and a circuit for changing connection of the output transistors to allow a W/L value of the output transistor to be changed. Moreover, the voltage regulator further includes an output current detection circuit for detecting an output current, and a circuit for changing connection of the output transistors based on the output current to allow a W/L value of the output transistors to be changed based on the output current.

Abstract: In a semiconductor integrated circuit, serially inputted trimming data are sequentially written to plural memory cells in accordance with selection signals for trimming a bleeder resistor, making it possible to dispense with a data register for storing the trimming data, thereby saving layout area.

Abstract: To provide a semiconductor integrated circuit including a trimmable bleeder resistor circuit, where a layout area of a trimming circuit is saved. In a semiconductor integrated circuit of the present invention, serially inputted trimming data are sequentially written to plural memory cells in accordance with selection signals for trimming a bleeder resistor, making it possible to dispense with a data resistor for storing the trimming data.

Abstract: The present invention provides a voltage regulator capable of causing a large output current to flow during a heavy load operation, and of making a leakage current from output transistors small during a light load operation. The voltage regulator includes a plurality of output transistors and a circuit for changing connection of the output transistors to allow a W/L value of the output transistor to be changed. Moreover, the voltage regulator further includes an output current detection circuit for detecting an output current, and a circuit for changing connection of the output transistors based on the output current to allow a W/L value of the output transistors to be changed based on the output current.

Abstract: To provide a switching regulator with a small packaging area.

Abstract: To provide a switching regulator with a small packaging area.

Abstract: A method and apparatus for resetting a sheet processing device is disclosed in which even if a trouble occurs, a sheet processing can be continued after resetting without wasting the previous processing. In a sheet processing device in which a set of sheets conveyed from an image forming device is discharged to a discharge tray after a predetermined processing process, the processing process is finely divided into plural function units and the function units are individually reset. In a memory device, a status flag indicating the condition of each module unit is assigned to each unit. The presence of a partially performed operation is confirmed by the status flag, and only the function unit having partially performed operation is reset to its initial condition.

Abstract: A sheet handling device for accommodating, aligning and storing sheets fed from an image forming apparatus such as a copying machine is provided with front-side and rear-side aligning members for pressing the sheets stacked on a first storage means between the aligning members to stably and exactly align the stacked sheets. The front side aligning member is movable vertically or rotatable to open a sheet transferring passage so as to enable a sheet aligning mechanism in the sheet handling device to be operated in a small space, and thus, made compact. While transferring the aligned sheets from the first storage means to a second storage means, the aligned sheets are stably held by the front-side aligning member being in soft contact with the upper surface of the sheets being transferred.

Abstract: There is disclosed a sheet accumulation processing device in which sheets with images formed thereon are processed as a bunch before the sheet bunch is efficiently sorted and discharged to any one of plural discharge trays.

Abstract: A sheet handling apparatus receives a plurality of sheets discharged by a discharge roller pair from an image recording apparatus on a first support member disposed below the discharge roller pair to form a stack of the sheets on the first support member and carries out handling on the stack of sheets. A second support member is supported to be movable back and forth between a projecting position where it is projected over the first support member and is able to support a rear end portion of a sheet discharged by the discharge roller pair with a front end portion of the sheet supported by the first support member and a retracted position where it is retracted from the first support member. A controller controls movement of the second support member.

Abstract: A process for purifying 7-dimenthylamino-6-demethyl-6-deoxytetracycline represented by the following formula, ##STR1## which comprises dissolving 7-dimethylamino-6-demethyl-6-deoxytetracycline or its hydrochloride having a lower purity in a mixed solvent of an alcohol and water by using hydrochloric acid and then adjusting the pH of the solution to 3.5 to 4.5 to recrystallize the hydrochloride having a higher purity.

Abstract: A process for producing 7-dimethylamino-6-demethyl-6-deoxytetracycline (minocycline) which comprises treating the reaction liquid containing minocycline and formaldehyde with hydroxylamine or urea, the reaction liquid being obtained after reductive methylation of 7-amino-6-demethyl-6-deoxytetracycline by using aldehyde, then subjecting the reaction liquid to an adsorption treatment with a nonionic adsorption resin (adsorbent), and subsequently eluting the intended product adsorbed to the adsorbent.