EP 0057472 B1 19881109 - RANDOM DROPLET LIQUID JET APPARATUS AND PROCESS
Title (en)
RANDOM DROPLET LIQUID JET APPARATUS AND PROCESS
Publication
Application
Priority
US 23132681 A 19810204
Abstract (en)
[origin: EP0196074A2] Fluid or liquid jet marking apparatus and process wherein the treating fluid or liquid (10) is in the form of ink, dyestuff or other printing, marking or coloring medium, is delivered under pressure to an array of jet orifices (14) from which the medium issues continuously as streams (16) that break randomly into discrete droplets in flight. The moving random droplets are selectively charged as they pass through a selectively energizable electrostatic field (18). The paths of charged droplets are controlled by a deflection means (20) which establishes a second electrostatic field through which the droples pass. Depending on whether the droplets are charged, they are either caught by a collector (22), or impinge on a receiving substrate such as a textile, paper or any other desired medium, product or substance. In the apparatus, the streams (16) break up randomly into droplets. Since the apparatus is not provided with a separate stimulator, vibrator or perturbation device, the orifice plate can have virtually an unlimited cross-machine length. It has been found that by controlling certain equipment parameters, such random droplet brakup can occur within a narrow distribution around a mean droplet size to produce results very much the same as with perturbed systems that use separate, regularly cyclical varicosity inducing means, and in many cases are superior to perturbed systems in a large variety of applications as the length of the orifice plate is not limited in size. The undesirable effects of droplet to droplet size and spacing variation become narrowed with increased pressure on the fluid or liquid supply and decreased diameter of the jet orifices.
IPC 1-7
IPC 8 full level
B41J 2/015 (2006.01); B41J 2/025 (2006.01); B41J 2/03 (2006.01); B41J 2/06 (2006.01); B41J 2/115 (2006.01); B41J 2/14 (2006.01)
CPC (source: EP KR)
B41J 2/025 (2013.01 - EP); B41J 2/03 (2013.01 - EP); B41J 2/115 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE CH DE FR IT LI LU NL SE
DOCDB simple family (publication)
EP 0196074 A2 19861001; EP 0196074 A3 19870408; EP 0196074 B1 19901003; AR 229416 A1 19830815; AT E38493 T1 19881115; AT E57138 T1 19901015; AU 550059 B2 19860227; AU 5681886 A 19860911; AU 574573 B2 19880707; AU 8203582 A 19820826; BR 8205986 A 19830111; CA 1191048 A 19850730; DE 3279204 D1 19881215; DE 3280256 D1 19901108; DK 437182 A 19821001; EP 0057472 A2 19820811; EP 0057472 A3 19830831; EP 0057472 B1 19881109; ES 509282 A0 19830601; ES 8306648 A1 19830601; FI 75225 B 19880129; FI 75225 C 19880509; FI 823289 A0 19820924; FI 823289 L 19820924; GB 2108433 A 19830518; GB 2108433 B 19850501; GR 78350 B 19840926; HK 52786 A 19860718; IE 53454 B1 19881123; IE 820159 L 19820804; IN 157640 B 19860510; JP S58500014 A 19830106; KR 830008838 A 19831216; KR 880001453 B1 19880810; MX 160194 A 19891221; NO 823317 L 19821001; NZ 199622 A 19851213; PT 74383 A 19820301; PT 74383 B 19831115; WO 8202767 A1 19820819; ZA 82705 B 19830126
DOCDB simple family (application)
EP 86104112 A 19820204; AR 28833582 A 19820203; AT 82100804 T 19820204; AT 86104112 T 19820204; AU 5681886 A 19860429; AU 8203582 A 19820203; BR 8205986 A 19820203; CA 395424 A 19820202; DE 3279204 T 19820204; DE 3280256 T 19820204; DK 437182 A 19821001; EP 82100804 A 19820204; ES 509282 A 19820203; FI 823289 A 19820924; GB 8227548 A 19820203; GR 820167210 A 19820204; HK 52786 A 19860710; IE 15982 A 19820126; IN 68DE1982 A 19820129; JP 50088582 A 19820203; KR 820000470 A 19820204; MX 19124982 A 19820203; NO 823317 A 19821001; NZ 19962282 A 19820201; PT 7438382 A 19820203; US 8200140 W 19820203; ZA 82705 A 19820204