J.s. Staedtler Gmbh & Co.

Manuela Rau

Wolfgang Storck

Ralph Papenfuhs

An ink for ink jet printing systems, preferably for continuous jet systems, contains as primary components coloring agents, organic solvents, conductivity mediators, and at least two binding agents, wherein the first binding agent is a bonding agent, and the second binding agent is a fixing agent and an agent for adjusting the viscosity. The ink is used for printing or writing on objects of plastics material, particularly rubber or silicone.

Ink for ink jet printing and method of using the ink

An ink cartridge with a closing device for ink jet printers or similar writing, printing or drawing units, wherein the ink cartridge in the printer as well as the closing device are releasably mounted on the ink cartridge, wherein the ink cartridge can be filled manually or automatically with ink from an external tank, wherein the ink cartridge includes at least one housing, an ink reservoir and a refill opening, and wherein the refill opening is closeable by the closing device. The closing device includes at least two different closing elements, wherein a first element provides a sealing action and is a plug or a closing cap and a second element is constructed as an air-permeable compensating cap and includes a compensating body which is in the condition of use impregnated with a writing agent, a surface-active agent or tenside, with water, organic solvent or another liquid, wherein the closing elements or caps can be exchanged against each other and/or can be connected to each other and can be mounted on the ink cartridge and/or on each other.

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Nürnberg, Germany

Manuela Rau