Ballpen
 Ballpen | |
|---|---|
| Bayanai | |
| Ƙaramin ɓangare na |
alkalami da stationery (en)  |
| Suna saboda |
Maik da László Bíró (en) |
| Mabiyi |
Sergent-Major (en) |
| Mai ganowa ko mai ƙirƙira |
Max Pike (en) da László Bíró (en) |
| Time of discovery or invention (en) | 1938 |
| Hannun riga da |
fountain pen (en) da Rapidograph |
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BallPen - Pen amfani da haruffa sanda (tube cika da pasty tawada) tare da ball aya alkalami a kan karshen. Channel a kan abin da tawada da aka gudanar a karshen karamin karfe ball ana katange, cewa lokacin rubuta a farfajiya na Rolls takarda daga bãya gefen tawada wetting. A kananan rata tsakanin ball da bangon damar da shi a juya da mirgina barshi cikin takarda sawu. Waɗannan su ne mafi arha, mafi sauki, don haka ya fi na kowa alkalami. Tawada manna amfani da ball-aya alkalami, da tawada ne daban-daban daga rubuce-rubuce marmaro alkalama. An halicci kan man fetur kuma mafi m, wanda ya hana shi daga gudãna daga cikin sanda.
Da aiki manufa na rike da aka jadadda mallaka Oktoba 30, 1888, a Amirka ta Yohanna Loudon. A m shekaru, da aka ƙirƙirarru, kuma ya jadadda mallaka daban-daban kayayyaki alkalama: May 3, shekara ta 1904 - George Parker, 1916 - Van Vechten Raizberg (Eng. Van Vechten Reisberg).
Zamani ballpoint alkalami ƙirƙira da Hongeriyanci jarida Laszlo Biro (Hung. Laszlo József Bíró) a 1931 (jadadda mallaka a 1938). A Argentina, inda ya rayu shekaru 'yar jarida, wadannan alkalama an kira daga bãyansa, "Biyer."
Akwai biyu na asali iri alkalama - yarwa kuma m sanduna.