A writing instrument comprising a body having an axis, a writing tip, a reservoir and at least one visual mark being a specific mark for augmented reality applications, the at least one visual mark being configured to be hidden/visible when the writing tip is distant from a writing surface and to be respectively visible/hidden when the writing tip is in contact with a writing surface, at least a portion of the body being configured to allow the at least one visual mark to adopt two states, visible and hidden configuration.

A nib for a refillable free ink writing felt pen includes a body and a dry ink tank including dry ink, the dry ink tank being delimited by the body of the nib and a dry ink tank wall including a breakable portion.

A nib for a valve-free free ink writing felt pen including a first end configured to deliver ink to a writing support and second end, opposite the first end, configured to be inserted in a nib receiving part of the valve-free free ink writing felt pen, the first end and the second end defining an axial direction of the nib, the nib having an external surface configured to cooperate with an internal surface of the nib receiving part, the external surface being configured to allow intake of air from the outside of a free ink tank, the valve-free free ink writing felt pen into the free ink tank and avoid ink leakage outside the free ink tank when cooperating with the internal surface of the nib receiving part. A valve-free free ink writing felt pen including a nib.

An aqueous peelable ink composition comprising at least one film-forming elastomeric polymer, at least one pigment, and water, wherein the film-forming elastomeric polymer is hydrogenated acrylonitrile butadiene rubber, and a method for preparing such an aqueous peelable ink composition.

The invention provides a system for refilling of used markers. The system comprises at least one round plate (1) mounted on a supporting platform, at least one ink reservoir (2) adapted to store ink and positioned at the center of the round plate (1) and one entry hole (3) on the ink reservoir (2) adapted to hold a nib of a marker (6). The round plate (1) of the system is mounted on a motor adapted to rotate the round plate (1) at high speed in a circular motion to dispense ink from the ink reservoir (2) by centrifugal force via the entry hole (3) to refill the marker (6) through the nib.

The present disclosure relates to a method for preparing a thermochromic water-based gel ink composition, as well as a thermochromic water-based gel ink composition thereof comprising a specific monocarboxylic or polycarboxylic acid. The present disclosure also concerns a writing instrument, such as a ballpoint pen, a brush pen, a marker, a highlighter, and a felt pen, comprising a thermochromic water-based gel ink composition according to the disclosure.

A marking implement has a body that has a marking device on one side of the body. The marking device is designed for leaving a mark on a surface. On a distal second side of the body is a strap or straps for removably affixing the body to an appendage/digit of a user (e.g., a single finger or fingers) so the marking implement does not require pressure from another appendage of the user to work. Movement of the marking device across a surface deposits a mark on the surface such as a pen line pencil line, highlighter line, strip of pain, ink line.

A writing instrument may include an upper barrel rotatably connected to a lower barrel. Writing fluid reservoirs may be housed in the upper barrel. A writing tip secured to the lower barrel may be in selective fluid communication with the writing fluid reservoirs. The upper barrel may be rotatable relative to the lower barrel of the writing instrument.

A liquid applicator device for dispensing an applicator liquid from an applicator liquid container. The liquid applicator device comprises a closure having an internal passageway for sealing with the applicator liquid container. A dispensing mechanism is disposed in the internal passageway of the closure. An applicator located in the passageway engaging with the valve element for enabling a depression of the applicator to displace the valve element from the sealing surface to enable the flow of the applicator liquid from the liquid container into the applicator. A capture extends from the valve element for grasping the applicator for inhibiting removal of the applicator from the passageway.

A writing instrument comprises a hollow body having a first end and a second opposite end along a longitudinal axis (X); a deformable tank inside the hollow body and containing ink; a writing tip disposed at the first end of the hollow body and in fluid communication with the deformable tank; and a deformation device configured to squeeze the deformable tank along the longitudinal axis (X) so as to move forward towards the writing tip the ink contained in the deformable tank.