EP 0458230 B1 19960619 - Method and device for toning a printing forme of ferroelectric material
Title (en)
Method and device for toning a printing forme of ferroelectric material
Title (de)
Verfahren und Vorrichtung zum Tonen einer Druckform aus ferroelektrischem Material
Title (fr)
Méthode et dispositif de développement d'une forme d'impression en matériel ferroélectrique
Publication
Application
Priority
AU PK030890 A 19900524
Abstract (en)
[origin: US5213931A] To predispose toner particles to develop latent images in the form of polarized domains on a ferro-electric recording layer (12), for immediate transfer to a substrate (S), a donor roller (1) is rotated in a bath of liquid dispersed toner particles (4), which are charged; the thickness of the liquid dispersion, and hence of the quantity of donor particles, is controlled by limiting the amount of dispersant liquid toner particle deposit by rotating a limiting roller (9) positioned spaced apart with respect to said donor roller by a tiny gap; sequential rotation of the donor roller past a nkp (14) with the ferro-electric surface layer (12) forms a meniscu between the toner dispersion and, where the polarization of domains of the ferro-electric recording member (12) is opposite the charge polarization of the toner particles, the toner particles will adhere to the ferro-electric recording surface (12) for subsequent transfer to the recording substrate (S).
IPC 1-7
IPC 8 full level
G03G 15/06 (2006.01); G03G 9/125 (2006.01); G03G 15/056 (2006.01); G03G 15/10 (2006.01); G03G 15/22 (2006.01)
CPC (source: EP US)
G03G 9/125 (2013.01 - EP US); G03G 15/056 (2013.01 - EP US); G03G 15/101 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
US 5213931 A 19930525; DE 59107942 D1 19960725; EP 0458230 A2 19911127; EP 0458230 A3 19930825; EP 0458230 B1 19960619; JP 3581371 B2 20041027; JP H04229884 A 19920819
DOCDB simple family (application)
US 69710691 A 19910508; DE 59107942 T 19910518; EP 91108110 A 19910518; JP 11822691 A 19910523