Company Filing History:
Years Active: 1982-1985
Title: Alan E Bohnhoff: Innovator in Thermal Printing Technology
Introduction
Alan E Bohnhoff is a notable inventor based in Lexington, KY (US), recognized for his contributions to thermal printing technology. He holds 2 patents that showcase his innovative approach to improving printing processes. Bohnhoff's work has significantly impacted the efficiency and reliability of thermal printers.
Latest Patents
One of Bohnhoff's latest patents is titled "Drive for thermal printing lift-off correction." This invention involves a ribbon that has an outer layer adhering to printed characters at intermediate temperatures, which are lower than the printing temperatures. The printhead features a column of electrodes that sweep across the character area, allowing for lift-off through a pattern control that manages the current source. The rapid, square wave pulses generated at adjoining electrodes effectively raise the outer layer ribbon to the intermediate temperature, ensuring good long-term reliability.
Another significant patent by Bohnhoff is the "Drive circuit for thermal printer." This invention utilizes a feedback mechanism that monitors an internal ribbon voltage at the print point. By placing a monitoring contact on the opposite side of the printhead from the drive signal return contact, the feedback signal effectively cancels out voltage drop variations in the common return portion of the drive signal path. This innovation enhances the performance of resistive ribbon thermal printers.
Career Highlights
Alan E Bohnhoff has made substantial contributions to the field of thermal printing during his career at International Business Machines Corporation (IBM). His work has been instrumental in advancing the technology used in thermal printers, making them more efficient and reliable.
Collaborations
Throughout his career, Bohnhoff has collaborated with notable colleagues, including Stanley Dyer and Bruce M Cassidy. These collaborations have fostered an environment of innovation and have led to significant advancements in thermal printing technology.
Conclusion
Alan E Bohnhoff's contributions to thermal printing technology through his patents and collaborations highlight his role as an influential inventor in the field. His work continues to shape the future of printing technology, ensuring improved performance and reliability.