Company Filing History:
1 out of 12 
1 out of 5 
1 out of 64 Years Active: 1979-1991
Title: Innovations by Fred Johannsen
Introduction
Fred Johannsen is a notable inventor based in Varel, Germany. He has made significant contributions to the field of inkjet printing technology. With a total of 3 patents to his name, Johannsen's work has advanced the capabilities of printing systems.
Latest Patents
One of his latest patents is a method of producing an etched base plate for an ink print head. This method involves several steps, including the application of a mask with a specific pattern on each face of a base plate. The base plate is then exposed to light, heated to convert its structure, and dipped into an etching solution to create ink printing chambers and channels. The patterns on the masks are designed as mirror images of each other.
Another significant patent by Johannsen is a method of providing an ink jet printing head with piezo-crystals. This method includes creating a plate-shaped basic printing head body with various components such as ink supply reservoirs and pressure chambers. The process involves attaching a piezo-ceramic plate to a membrane plate and ensuring that separate piezo-crystals are aligned with each pressure chamber through precise cuts.
Career Highlights
Throughout his career, Johannsen has worked with several companies, including Aeg Olympia Aktiengesellschaft and Olympia Aktiengesellschaft. His experience in these organizations has contributed to his expertise in the field of printing technology.
Conclusion
Fred Johannsen's innovative patents and career achievements highlight his significant role in advancing inkjet printing technology. His contributions continue to influence the industry and inspire future innovations.