An apparatus includes a pen. The pen includes a reservoir configured to store a fluid. The pen also includes a tip configured to transfer the fluid from the reservoir onto a surface of an object during writing. The pen further includes a regulator configured to control a flow of the fluid from the reservoir to the tip. The apparatus also includes the fluid stored within the reservoir. The fluid includes a carrier fluid and particles of an X-Ray opaque material.

An apparatus includes a pen. The pen includes a reservoir configured to store a fluid. The pen also includes a tip configured to transfer the fluid from the reservoir onto a surface of an object during writing. The pen further includes a regulator configured to control a flow of the fluid from the reservoir to the tip. The apparatus also includes the fluid stored within the reservoir. The fluid includes a carrier fluid and particles of an X-Ray opaque material.

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 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.

An applicator of the invention includes a main body, a storage chamber disposed in the main body, an application body disposed at an end of the main body to allow application of the liquid stored in the storage chamber, a partition for partitioning between the storage chamber side and the application body side, the partition including a flow passage to supply the liquid in the storage chamber to the application body, an axially movable air communication pipe having an air port open to the storage chamber, which abuts on the partition to close the flow passage, and communicates the storage chamber with the atmosphere while having the flow passage closed, and a spring member for urging the air communication pipe to abut on the partition, and separating the air communication pipe from the partition through vibration of the main body to allow guiding of the liquid in the storage chamber.

An applicator of the invention includes a main body, a storage chamber disposed in the main body, an application body disposed at an end of the main body to allow application of the liquid stored in the storage chamber, a partition for partitioning between the storage chamber side and the application body side, the partition including a flow passage to supply the liquid in the storage chamber to the application body, an axially movable air communication pipe having an air port open to the storage chamber, which abuts on the partition to close the flow passage, and communicates the storage chamber with the atmosphere while having the flow passage closed, and a spring member for urging the air communication pipe to abut on the partition, and separating the air communication pipe from the partition through vibration of the main body to allow guiding of the liquid in the storage chamber.

Provided is a writing instrument including a pen cap, a pen tip and a pen barrel, wherein the pen tip is arranged at one end of the pen barrel, an ink cartridge configured to store ink is formed at the other end of the pen barrel, and the pen cap able to be removed is provided on the pen barrel for covering the pen tip; wherein the writing instrument further includes: an ink delivery assembly including a first tube body, a second tube body, a liquid guiding column and liquid absorbent cotton, wherein the second tube body is inserted into the first tube body, the liquid guiding column is inserted into the second tube body, the liquid absorbent cotton is arranged inside the first tube body, an inner end of the pen tip is inserted into the first tube body, and an end of the first tube body which is away from the pen tip is opened with a first vent and an end of the second tube body which is close to the pen tip is opened with a second vent; the first tube body is arranged in the pen barrel; an air flow channel is formed between an inner wall of the pen barrel and the first tube body; the second tube body is in communication with the ink cartridge; a part of the pen barrel corresponding to where the pen tip is arranged is provided with a plurality of ribs, and an air inlet is enclosed by the pen tip and any two adjacent ribs, and the air inlet is in communication with the air flow channel. The writing instrument could increase ink storage capacity and avoid ink leakage, thereby improving user experience.

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.

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.