WRITING TOOL AND EJECTION UNIT THEREOF Russian patent published in 2019 - IPC B43K5/18 

FIELD: satisfaction of human vital requirements.

SUBSTANCE: writing tool comprises a writing unit having a tube and a tip mounted at the end of the tube. Capillary element is installed in the tube and is in contact with the tip. Ejection unit is installed in the tube and has an inlet part having at least one cutting section, a first connecting section and an outer passage, with at least one cutting section having at least one sharp cutting edge formed at its top. First connecting portion surrounds at least one cutting portion, wherein an outer passage is formed between the at least one cutting portion and the first connecting portion. Output part of the ejection unit is in contact with the capillary element. Ejection unit also has an ejection passage that communicates with the outlet part, the inlet part and the outer passage. Replaceable ink cartridge is installed in the tube and communicates with the ejection unit, wherein the replaceable ink cartridge has a second connecting portion connected to the first connecting portion of the ejection unit. Ink is contained in a replaceable ink cartridge, wherein the film in the ink cartridge is cut by at least one cutting edge to exit the ink. Ejection unit of writing tool is also proposed.

EFFECT: high volume ink supply, no ink residue, which may stain the user's hands, preventing ink from leaking out of the ejection unit during assembly and replacing the replacement ink cartridge.

20 cl, 12 dwg