Company Filing History:
Years Active: 1986-1993
Title: Takashi Sawafuji: Innovator in Photoelectric Devices and Thermal Print Heads
Introduction
Takashi Sawafuji is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the fields of photoelectric devices and thermal print heads. With a total of 4 patents to his name, his work has had a lasting impact on technology.
Latest Patents
One of his latest patents is a photoelectric conversion device. This device includes a plurality of sensor elements made up of photodiodes and blocking diodes on a substrate, connected into a linear pattern that extends in a primary scanning direction. The sensor elements are driven in a suitable sequence to read image data from an original document. Each sensor element includes a first lower electrode formed on the substrate, a second lower electrode that is electrically separated from the first electrode, a photodiode formed on the first electrode, and a blocking diode formed on the second electrode to prevent crosstalk. An upper electrode connects the photodiode and blocking diode electrically. Lead wires for connecting the sensor elements to output circuits extend in the primary scanning direction on the first lower electrodes, with an insulating film in between. The first lower electrodes are selectively connected to the lead wires through holes provided in the insulating film.
Another notable patent is for a thermal print head. This device features a base, a glass glaze layer formed on the base by electrically-heated welding, and heating elements formed on the glass glaze layer. The manufacturing method of this thermal print head uses a furnace to accommodate molten glass and a pair of opposed electrodes to melt the glass by flowing current. The method includes supplying electric power across the electrodes to cause electric current to flow through the glass, passing an elongated base through the molten glass to form a glass glaze layer, and forming heating elements on the glass glaze layer.
Career Highlights
Throughout his career, Takashi Sawafuji has worked with notable companies such as Toshiba Corporation and Nippon Steel Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
He has collaborated with esteemed colleagues, including Goro Oda and Niro Nagata, further enhancing his contributions to the field.
Conclusion
Takashi Sawafuji's innovative work in photoelectric devices and thermal print heads showcases his significant impact on technology. His patents reflect a commitment