Title:
METHOD AND DEVICE FOR RECOVERING OPERATION OF INK JET PRINTING NOZZLE
Document Type and Number:
Japanese Patent JPS63107561
Kind Code:
A
Abstract:
The operation restorer has blockages eliminated by a control circuit (118) which operates at a higher frequency than that used for printing, under control of a microprocessor (120), electronic selector switch (124) and frequency generator (122). Simultaneously suction is produced by a suction pump (38) connected to a resilient cup (34) fitted in front of the nozzles in a parking position of the head (12) beyond a platen. Before the cup is withdrawn from the nozzles the suction is nullified by opening a vent (89) to ensure the ink does not escape. A rubber disc adjacent to the platen roller cleans the printing elements as they wipe across its edge as the head moves back in front of the platen.
Inventors:
ANDOREA ATSUKACHINO
ARUDO YANSU
ARUDO YANSU
Application Number:
JP21497787A
Publication Date:
May 12, 1988
Filing Date:
August 28, 1987
Export Citation:
Assignee:
OLIVETTI & CO SPA
International Classes:
B41J2/02; B41J2/165; B41J2/18; B41J2/175; B41J2/185; B41J2/19; (IPC1-7): B41J3/04
Attorney, Agent or Firm:
Kyozo Yuasa