Recorders – Record receiver deforming
Patent
1980-08-27
1982-05-04
Gonzales, John
Recorders
Record receiver deforming
G01D 1800
Patent
active
043285058
ABSTRACT:
An alternating drive signal is applied to an ink ejection head (11) to cause a jet of ink to be ejected which separates into droplets at a certain position. A charging electrode (16) is provided at this position to charge the droplets where it is desired to print a dot. Charged droplets are deflected by deflection electrodes (18), (19) to hit a sheet of paper (32) for printing whereas uncharged drops hit a gutter (21). The sheet (32) is moved relative to the ejection head (11) for scanning. The phases of the drive signal and an alternating charging signal applied to the charging electrode (16) are continuously varied between limit values. The phase of the charging signal is locked when the sheet (32) reaches a prescan position. The phase of the drive signal is locked when a charged condition of the droplets is detected. This ensures that adjacent scan lines will not be displaced from each other in the scan direction.
REFERENCES:
patent: 3999188 (1976-12-01), Yamada
patent: 4012745 (1977-03-01), Brown et al.
patent: 4080606 (1978-03-01), Yamada
Alexander David G.
Gonzales John
Ricoh & Company, Ltd.
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