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US 4,176,273 AGranted
Light and heat writing pen for photosensitive material
AssigneeOlympus Optical Co., Ltd.
InventorsTetsuo Fujie, Hiromi Ito
Life of this patent
Estimating the term…
Abstract
A writing pen for heat developing photoconductive material including a pen having a nib formed of material of high thermal conductivity and pervious to light, for contacting photosensitive heat developing material. The pen has a light source for illuminating the photosensitive material through the pen nib contacting the material, and a heater embedded in the nib for heating the nib portion in contact with photosensitive material. The pen nib may include a light-pervious rotatable ball tip seated in a light-pervious ball receptacle.
Claims2
A writing pen for heat developing type photoconductive material comprising:
- a pen having a pen nib formed of material having good thermal conductivity and light-perviousness and adapted to be brought into contact with photosensitive heat developing type material;
- a light source in said pen for illuminating through said light pervious pen nib the photosensitive heat developing type material contacted by said pen nib;
- and a heater embedded in said pen nib and for heating at least a portion of said nib adapted to contact the photosensitive material to a predetermined temperature.
Dependencies are inferred from the claim text.