Mita Industrial Co., Ltd.

Yoshiaki Yanagida

Yoshihisa Ikuta

Soichi Matsuyama

Kiyoshi Morimoto

Yasuyuki Ishiguro

Kiyoshi Shibata

Tadakazu Ogiri

Takashi Maekawa

Tetsuya Matsushita

Hirofumi Ozaki

Hisaki Shimosaka

Koji Katsuragi

Ikuhiro Ohmi

A signal communication system includes a control portion and an operation portion. The control portion has an output data transmitter for transmitting output data to the operation portion in the form of a serial signal, and an input data receiver for receiving input data signal from the operation portion. The operation portion has an input data transmitter for transmitting the input data to the control portion in the form of a serial signal, and an output data receiver for receiving the output data from the control signal, and an operable device for executing an operation in accordance with the output data. The control portion further has an output data memory for storing output data, a timing signal generator for generating a timing signal, and a timing signal transmitter for transmitting the timing signal to the output data transmitter and the operable device. Thereby, the output data transmitter transmits the output data in accordance with the timing signal and the operable device the operation in synchronization with the timing signal.

Signal communication system

The present invention is directed to the provision of a sheet feeder unit mounted in a copying machine or the like having a sheet transport mechanism. The sheet feeder unit feeds sheets to the sheet transport mechanism, and the sheets fed into the sheet transport mechanism are transported by the sheet transport mechanism. Each sheet being transported by the sheet transport mechanism is detected by a pair of sensors disposed with a prescribed space provided between each other, and the sheet transporting speed is calculated from the time in which the sheet travels the distance between the two sensors. The sheet feeding condition is set on the basis of the sheet transporting speed of the sheet feeder unit so that the sheets fed from the sheet feeder unit do not overlap each other.

Sheet feeder unit

A semiconductor integrated circuit constructed on a single chip. Either one of a signal inputted to a clock signal input terminal and a signal obtained by dividing the frequency of the clock signal inputted to the clock signal input terminal is selected by a selecting circuit responsive to a selection signal supplied from the exterior of the chip to be supplied to a control circuit. Consequently, the frequency dividing circuit can be bypassed in response to the selecting circuit. Accordingly, it is possible to easily provide operation at a high frequency exceeding the maximum operating frequency of component devices forming the semiconductor integrated circuit. This can be done by connecting an external circuit having the same function as that of the circuit bypassed and capable of higher-speed operation.

Timer control with selectable frequency divider

Toner collecting apparatus in which a toner collecting container for collecting toner remaining on the surface of a photosensitive drum in a copying machine or a facsimile machine is provided, at the lower side thereof, with a toner receiving port, a sponge roller for rotatingly feeding collected tone disposed adjacent the toner receiving port, and an optical detector for detecting that a predetermined amount or more toner has been collected in the toner collecting container. The optical detector, is disposed on the toner collecting container. At least those portions of the toner collecting container located opposite to the optical detector are made of a light-permeable material.

Toner collecting apparatus

Growing community of inventors

Hirakata, Japan

Yoshiaki Yanagida