Ink dot printer

Details Ink dot printer Ink dot printer

1985-10-17

1988-06-07

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 346140R, 400119, 400470, B41J 312, B41J 2718

Patent

active

047492929

ABSTRACT:
An ink dot printer comprises a recording sheet, at least one needle made of an electrically conductive material and located in one side of the recording sheet so as to move between a normal position remote from the recording sheet and a projected position close to the recording sheet, a drive mechanism for displacing the needle between the normal position and the projected position, an ink supply mechanism for supplying and attaching ink to the tip of the needle which faces the recording paper when the needle is in the normal position, an electrode disposed on another side of the recording mechanism and facing the tip of the needle, and an electric field generating mechanism for generating, between the electrode and needle, an electric field of such intensity as to cause ink to fly from the tip of the needle, when the needle is closer to the recording sheet than the normal position, toward the recording sheet to thereby form an ink dot on the recording sheet.

REFERENCES:
patent: 3509816 (1970-05-01), Spaulding
patent: 4552469 (1985-11-01), Tsuge et al.
patent: 4603338 (1986-07-01), Nakayama et al.
patent: 4696589 (1987-09-01), Okuno et al.

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