US 12,403,719 B2
Efficient ink erasure system
Nikolaos Chrysanthakopoulos, Anoixi (GR); and Guillaume Caffier, Clichy (FR)
Assigned to SOCIÉTÉ BIC, Clichy (FR); and BIC Violex Single Member S.A., Anoixi (GR)
Appl. No. 18/557,880
Filed by SOCIÉTÉ BIC, Clichy (FR); and BIC Violex Single Member S.A., Anoixi (GR)
PCT Filed Apr. 28, 2022, PCT No. PCT/EP2022/061360
§ 371(c)(1), (2) Date Oct. 27, 2023,
PCT Pub. No. WO2022/229328, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 21305563 (EP), filed on Apr. 30, 2021.
Prior Publication US 2024/0227430 A1, Jul. 11, 2024
Int. Cl. B43L 19/00 (2006.01); B43K 5/00 (2006.01); B43K 29/00 (2006.01); C09D 11/17 (2014.01)
CPC B43L 19/0043 (2013.01) [B43K 5/00 (2013.01); C09D 11/17 (2013.01); B43K 29/00 (2013.01)] 17 Claims
 
1. A system comprising:
a writing instrument comprising an ink,
wherein the ink comprises a coloring agent and a bonding agent,
wherein an adhesiveness of the bonding agent can be altered by applying a voltage or a voltage and a current;
a writing surface comprising a first electrode; and
an erasing tool comprising a second electrode.