Alpha Assembly Solutions Inc.

Macdermid Autotype Limited

Autotype International Limited

Anna Jane Harris

Nirmalya Kumar Chaki

Keith Paul Parsons

Supriya Devarajan

Jeffrey William Braham

Bawa Singh

Siuli Sarkar

Rahul Raut

Anubhav Rustogi

David Joseph Foster

Barun Das

Chetan Pravinchandra Shah

This invention discloses formulations of mutually compatible sets of graphene, graphene-carbon, metal and dielectric inks for the fabrication of high performance membrane touch switches (MTS). The compositions of these inks are optimized to achieve higher degree of compatibility with highly engineered polymeric substrates, thereby offering a holistic solution for fabricating high-performance MTS. These sets of materials can also be used for fabrication of sensors, biosensors and RFIDs on flexible substrates, such as polymers and papers.

Graphene enhanced and engineered materials for membrane touch switch and other flexible electronic structures

A method of producing a screen-printing stencil having open areas and blocked areas for respectively passage and blocking of a printing medium. The method includes providing a receptor element having an image-receiving layer capable of receiving a first chemical agent in areas corresponding to the blocked areas of the stencil to be produced. A first chemical agent is applied to the image-receiving layer of the receptor element in the corresponding areas. A second, stencil-forming chemical agent is then applied to a screen printing screen and the image-receiving layer fo the receptor element brought into contact with the stencil-forming agent to allow the first and second chemical agents to react to produce on the screen a stencil-forming layer having areas of lower solubility corresponding to the said blocked areas and areas of higher solubility in areas corresponding to the open stencil areas. Any remaining unreacted part of the receptor element is removed and the second chemical agent washed away in the higher solubility areas thereby producing the screen-printing stencil.

Screen printing stencil production

Growing community of inventors

Wantage, United Kingdom

Anna Jane Harris