抄録
A method has been developed, which is available to the printing system and the transferring system in electrostatic printing or electrophotography. Using the method, which is based on a fact that an electrostatic field gives a considerable effect on the static electrification, replica of a latent electrostatic charge pattern may be directly obtained. Procedures are very simple. A thin insulating film without any charges is placed on an insulating film with an electrostatic charge pattern. Thereafter, the surface of the former is rubbed by a soft material. After both films are separated into each film, a transferred charge pattern of the reversed sign is observed on the former, and the previous one still remains on the latter. Results of experiment and application are described in the present paper.
