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1. (WO1989000504) METHOD AND APPARATUS FOR INK JET RECORDING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000504 International Application No.: PCT/EP1988/000625
Publication Date: 26.01.1989 International Filing Date: 11.07.1988
IPC:
B41J 2/115 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005
characterised by bringing liquid or particles selectively into contact with a printing material
01
Ink jet
07
characterised by jet control
115
synchronising the droplet separation and charging time
Applicants:
HERTZ, Carl, Hellmuth [SE/SE]; SE
Inventors:
HERTZ, Carl, Hellmuth; SE
SAMUELSSON, Bo, Å.; SE
Agent:
VON BEZOLD, Dieter @; Brienner Straße 52 D-8000 München 2, DE
Priority Data:
075,13920.07.1987US
Title (EN) METHOD AND APPARATUS FOR INK JET RECORDING
(FR) PROCEDE ET APPAREIL D'ENREGISTREMENT A JET D'ENCRE
Abstract:
(EN) In an ink jet recording apparatus, the generation of insufficiently charged or discharged drops is avoided which may occur when a charge controlling signal (print pulse) is switched within a forbidden zone of the period of the drop formation process. The region of the drop formation process period, during which the switching is permitted, is determined by detecting the charge carried by trains of drops which are produced by probe charge control signals of varying phase relative to the drop formation process.
(FR) Grâce à l'appareil d'enregistrement à jet d'encre décrit, on évite la production de gouttes insuffisamment chargées voire déchargées, ce qui peut se produire lorsqu'un signal de commande de charge (impulsion d'impression) est commuté à l'intérieur d'une zone interdite de la période du processus de formation des gouttes. La région de la période du processus de formation des gouttes, dans laquelle la commutation est permise, est déterminée par la détection de la charge transportée par des trains de gouttes produits par des signaux de commande de charge test de phase variable relative au processus de formation des gouttes.
Designated States: JP, KR
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0323991DE000003881010