摘要:
An image forming apparatus includes a photosensitive drum, a transfer roller and an antistatic sheet. The cylindrical surface of the photosensitive drum can be supplied with a developer. The transfer roller transfers the developer on the drum surface onto one side of a sheet of paper. The antistatic sheet is provided downstream from the transfer roller in the feed path to eliminate electric charge accumulated on the sheet of paper. The antistatic sheet includes a fibrous electric conductor and a non-fibrous electric conductor, which is connected electrically with the conductor, and which is positioned between the conductor and the other side of the sheet of paper passing over the antistatic sheet. The antistatic sheet can prevent the non-fibrous electric conductor from fluffing which causes print failure.
摘要:
A sewing machine having a wireless controller is disclosed, wherein the sewing machine substantially comprising a drive motor for driving the sewing machine, a separate controller adjustably operated to produce a variable set voltage for controlling the rotation speed of the drive motor, a converter for converting the set voltage to a corresponding digital value and producing a series of data on the basis of the digital value, a device for producing carrier waves, modulator for modulating the series of data by way of the carrier waves and producing modulated waves, transmitter means responsive to the modulated waves to produce a corresponding light signal, means for receiving the light signal, demodulator for demodulating the received light signal, and a device responsive to the demodulated light to control the rotation speed of said drive motor.
摘要:
A flat touch switch having plural switch components with rotation speeds of the sewing machine shaft indicated on each component is positioned in the region of the needle bar. Pushing a component part of the switch drives the machine at the indicated speed. A control logic circuit senses the pushed component and by sensing the speed of the driven shaft, drives the machine at the selected speed.