Electrostatic recording apparatus with improved recording electr

Details Electrostatic recording apparatus with improved recording electr Electrostatic recording apparatus with improved recording electr

1986-07-17

1988-03-29

Evans, A.

Recorders

Electric recording

Electrochemical

3461601, G01D 1510

Patent

active

047347201

ABSTRACT:
An electrostatic recording apparatus is provided which comprises a recording electrode with a plurality of stylus electrodes and a developing device with a back electrode provided on opposite sides of a recording medium. The recording apparatus is capable of simultaneously processing the forming of and development of a latent image by using the recording electrode which has a magnetic piece embedded at a tip portion thereof. A magnetic field is concentrated in its path and is increased in a narrow gap region between the recording electrode and the back electrode. Toner chains of magnetic particles in the developing process can easily stand upright on the back electrode, and can thus easily and uniformly contact the recording medium. Dot defects on a formed image, are therefore, avoided. The present invention is directed to several embodiments of the magnetic piece and the manner of embedding the magnetic piece in the recording electrode.

REFERENCES:
patent: 4394671 (1983-07-01), Erickson
Japanese Patent Abstracts, vol. 7, No. 63, (M-200) [1208], Mar. 16, 1983; & JP-A-57 208 266 (Matsushita Densou Kiki K.K.).
Japanese Patent Abstract, vol. 9, No. 194, (M-403) [1917], Aug. 10, 1985 & JP-A-60 058 875 (Matsushita Densou K.K.).
Japanese Patent Abstracts, vol. 7, No. 246, (M-253) [1391], Nov. 2, 1983, & JP-A-58 132 570 (Canon K.K.).
Japanese Patent Abstracts, vol. 9, No. 239, (p-391) [1962], Sep. 25, 1985 & JP-A-60 091 370 (Canon K.K.).
Japanese Patent Abstracts, vol. 7, No. 184, (p-216) [1329], Aug. 13, 1983; & JP-A-58 85 452 (Matsushita Densou Kiki K.K.).

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