International Business Machines Corporation

Gerald H Leino

Robert L Weiss

William W Harkins

Christos T Kapogiannis

John R Lankard, Jr

James C Utter

James N Humenik

Rao Venkateswara Vallabhaneni

Jawahar P Nayak

Renee L Weisman

Michael E Cropp

Robert L Baan

John A Trumpetto

Deborah Anne Sylvester

Raymond H Turcotte

Thomas J VanDuynhoven

Chris T Kapogiannis

Richard J Cassidy

Frank V Ranalli

James M Blazick

A cartridge block for screening a multilayer ceramic with a conductive paste includes a threaded paste cartridge attachment located at a top of the cartridge block, the threaded paste cartridge attachment being configured to receive a paste cartridge containing the conductive paste; a paste routing section, the paste routing section located underneath the threaded paste cartridge attachment, the paste routing section comprising a flared section located at a bottom of the cartridge block, the paste routing section being configured to receive the conductive paste from the threaded paste cartridge attachment and route the paste through the flared section.

Cartridge block for multilayer ceramic screening

An assembly for screening a multilayer ceramic with a conductive paste includes a paste cartridge containing the conductive paste; a cartridge block, a top of a cartridge block being configured to receive the paste cartridge, the cartridge block comprising a paste routing section, the paste routing section comprising a flared section located at a bottom of the cartridge block; a pneumatic fitting attached to the paste cartridge, the pneumatic fitting configured to pressurize the conductive paste in the paste cartridge such that the conductive paste is extruded from the paste cartridge into the cartridge block through the paste routing section of the cartridge block by the pressure from the pneumatic fitting; and a nozzle connected to the flared section of the cartridge block, the nozzle configured to receive the conductive paste from the flared section, and screen the conductive paste onto the multilayer ceramic through the nozzle.

Disclosed is a flexible sheet handling apparatus including a frame having a vacuum passage located around the periphery of the frame. There is also a porous, polymeric plug which covers the vacuum passage. When a vacuum is applied to the vacuum passage and the porous, polymeric plug, a flexible sheet in contact with the porous, polymeric plug is uniformly held only around the periphery of the flexible sheet by the applied vacuum.

Flexible sheet handling apparatus

A process of forming a multi-layer feature on a ceramic or organic article in which first and second layers of paste are sequentially screened through a screening mask wherein the screening mask has not been moved between screening steps. A structure produced by this process is also disclosed.

Single mask screening process

A method for serializing ceramic substrates in which a laser is used to remove unfired paste material from an unfired ceramic substrate. The paste material is removed by exposing the unwanted paste material to laser radiation in a programmed sequence of x and y coordinate moves. The laser radiation removes the unwanted paste material, leaving the identifying characters intact. The identifying characters can be used for part identification and traceability.

Pattern formation by removal of paste material

Growing community of inventors

Newburgh, NY, United States of America

Gerald H Leino