WRITING APPLIANCE WITH LIQUID INK Russian patent published in 1999 - IPC

FIELD: writing appliances. SUBSTANCE: this appliance can be used for writing on non-absorbing media such as metals or plastics for example on white boards wiped by dry method. Rear part 7 of body 2 of appliance creates reservoir 8 for ink 9. Rear end 12a of carrying rod 12 is open in reservoir 8, and front end 12b of carrying rod 12 protrudes beyond body 2 and creates writing pen. Buffer reservoir 13 is kept in contact with carrying rod 12. Ink has coefficient of surface expansion lying within range of 21mN/m to 25 mN/m. Coefficient of surface expansion of material creating buffer reservoir 13 is less than of ink 9 and differ by certain value from it. EFFECT: widened sphere of application and improved quality of writing at varied conditions of use. 8 cl, 4 dwg