Xjet Ltd.

Timofey Shmal

Hanan Gothait

Eli Kritchman

Sharon Fima

Eliahu M Kritchman

Guy Eytan

Axel Benichou

Yohai Dayagi

Wael Salalha

Oleg Kodinets

Lior Lavid

Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shaped wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative 'night plate' can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with purged ink.

Inkjet head storage and cleaning

Printing systems are disclosed for preventing sediment buildup. In one implementation, a printing system is provided. The printing system includes a print area and a print head housing configured to enclose a print head spaced from the print area. The print head has a plurality of nozzles for expelling a printing liquid therefrom. The printing system further includes a pipe for interconnecting the print head with a reservoir, a pump for circulating the printing liquid from the reservoir to the print head and through the plurality of nozzles, and a processor. The processor may cause the pump to circulate the printing liquid to the print head and through the plurality of nozzles during a period of non-printing. In one embodiment, circulating the printing liquid includes flowing the printing liquid from the reservoir to the print head and from a retainer located below the plurality of nozzles back to the reservoir.

A method for evaluating performance of a plurality of nozzles of a printing head includes repeatedly operating each of the nozzles to print test marks on a surface of a substrate, each of the test marks printed by that nozzle being printed at a different time. At least once during the repeated operation of each of the nozzles, at least some of the test marks are erased from the surface. The test marks that were printed by that nozzle are inspected for a feature that is indicative of the performance of that nozzle.

Printing head nozzle evaluation

Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shape wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative 'night plate' can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with the purged ink.

Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shaped wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative 'night plate' can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with the purged ink.

Growing community of inventors

Holon, Israel

Timofey Shmal