Willett International Limited

Videojet Technologies Inc.

Willet International Limited

Christopher Michael Bates

Ammar Lecheheb

Matthew Brian Tomlin

David Andrew Horsnell

Oliver Prime

Michael John Fox

Michael James Fox

Oliver John Prime

David Andrew Hornsnell

A solenoid valve making use of certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The plunger () is made from a material having a saturation flux density greater than 1.4 Tesla preferably more than 1.6 Tesla, a coercivity at less than 0.25 ampere per centimeter and a relative magnetic permeability in excess of 10.000; and the nozzle bore leading from the valve head chamber () to the nozzle orifice () has a length to diameter ratio of less than 8:1 preferably between 2:1 to 4:1 and the nozzle orifice () has a diameter substantially the same as that of the nozzle bore. The invention also relates to method for operating a drop on demand ink jet printer incorporating such a valve.

Solenoid valve

A method of printing onto one or more sides of a mesh fabric, such a polyester mesh typically used for flags and banners, using a drop on demand ink printer, wherein the printer is operated at a fluid pressure of between 1 and 3.5 bar and that the image forming composition has a viscosity of less than 100 cp.

System and method for providing image forming composition on a substrate using a drop on demand ink printer

The invention relates to a solenoid valve made using certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The invention also relates to method for operating a drop on demand ink jet printer incorporating such a valve.

Solenoid valve for a drop on demand ink jet printer

The invention relates to a solenoid valve made using certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The plunger () is made from an electromagnetic material having a saturation flux density greater than 1.2 Tesla preferably more than 1.6 Tesla, the bore leading from the valve head chamber () to the nozzle orifice () has a length to diameter ratio of less than 5:1 preferably between 2:1 and 4:1 and the nozzle orifice () has a diameter of 80 micrometer or less. The invention also relates to method for operating a drop on demand ink jet printer incorporating such a valve.

Robot mounted printhead

The present invention relates to a system for ensuring that the correct container (10) containing a replenishment fluid is connected to a vessel (26) for that fluid. The container carries one component (18) of a pair of axially engageable members (20). The other (28) is carried by the vessel (26, 27), notably around the necks extending therefrom, so that the members (20, 30) have to engage and nest so as to allow the necks of the container and the vessel to engage fully and thus mount the container on the vessel, one of the members (18, 28) being a moveable fit upon the container (10) or vessel (26), preferably by virtue of being a snap fit thereon, so that the member can be rotated to align its projections (20) with the recesses (30) on the other member. The invention is of especial application in ink jet printers to identify solvent and ink refill bottles and ensure that they are connected to the correct reservoir and by the use of the snap fit members allows a conventional refill bottle and reservoir to be used to achieve this.

Growing community of inventors

Kettering, United Kingdom

Christopher Michael Bates