A multicolor marker assembly for making a multicolored mark on a bingo card includes a bottle that has a plurality of chambers being integrated therein. Each of the chambers contains a fluid pigment of a respective color. An applicator is removably coupled to the bottle and the applicator is comprised of a fluid permeable material to absorb the fluid pigment contained in each of the chambers. Additionally, the applicator releases the fluid pigment in each of the chambers when the applicator is pressed against a surface to make a mark comprising a plurality of colors. A cap is positionable over the applicator to inhibit the applicator from releasing the fluid pigments.

A liquid applicator is described. The liquid applicator includes an applicating head, a buffer in communication with the outside air, a gas-liquid exchanger, and a reservoir supplying a liquid to the gas-liquid exchanger. The gas-liquid exchanger has a wick, a liquid sealing tube covering on the outer peripheral wall of the wick, and a gas-liquid channel disposed between the wick and the liquid sealing tube; the buffer covers on the outer peripheral wall of the liquid sealing tube, and capillary pressure of the liquid sealing tube is greater than capillary pressure of the buffer by 30% or more. The liquid applicator can effectively control the release of a liquid. It can prevent the liquid from leaking out. It features a simple structure, resulting in smooth application and easy manufacturing.

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 marker having a body, a core having an ink and the core being within the body, and a tip having a first end connected to the core and the tip extending from the body towards a second end. The tip further has a first side opposite a second side and a front side opposite a back side, with the first side and second side therebetween. The second end has a concave section between the first side and the second side and the concave section is configured to accommodate a circumferential arc of intravenous tubing within the concave section to deposit the ink.

Provide is a direct liquid type writing-brush pen that is equipped with a valve mechanism; and with which the ink tube is of replaceable cartridge type, and the writing brush tip is always impregnated with an appropriate amount of ink while the ink leakage being suppressed, whereby an excellent feeling of writing can be always given. A direct liquid type writing-brush pen, including a barrel, which holds a writing brush tip unit at the distal end part thereof; an ink cartridge, which is slidably and detachably fitted into the barrel from the basal end side thereof; a cap, which covers the writing brush tip unit; and a stopper, which is fitted to the basal end part of the barrel to slidably support the basal end part of the ink cartridge, which is protruded from the basal end side of the barrel, wherein, in the distal end part of the ink cartridge, a valve mechanism, which accommodates a valve core in a valve seat, is incorporated; in the valve seat, the distal end part of the valve core is removably connected to the basal end part of a relay core, which constitutes the writing brush tip unit; and on the circumferential face of a smaller diameter part of the valve seat, a sealing strip is formed.

Provided is an aqueous ink composition for writing instruments, which enables desired colorfulness to be obtained easily. The aqueous ink composition for writing instruments according to the present invention contains: pigmented microspheres each having a matrix comprising water and a polymer, and a water-insoluble dye; and unpigmented microspheres.

Provided is an aqueous ink composition for writing instruments, which enables desired colorfulness to be obtained easily. The aqueous ink composition for writing instruments according to the present invention contains: pigmented microspheres each having a matrix comprising water and a polymer, and a water-insoluble dye; and unpigmented microspheres.

An applicator includes a body, an application member, a storage for a liquid applying material, a liquid applying material absorbing body configured to adjust an amount of impregnation, and a first plug configured to cause a rear end side of the application member to be inserted through an insertion hole to hold the application member. The first plug is configured to expose the rear end side of the application member to a side of the storage. A storage region is configured to be increased and decreased by changing a position of a second plug. The absorbing body is mounted to a distal end and is cuttable.

An applicator includes a body, an application member, a storage for a liquid applying material, a liquid applying material absorbing body configured to adjust an amount of impregnation, and a first plug configured to cause a rear end side of the application member to be inserted through an insertion hole to hold the application member. The first plug is configured to expose the rear end side of the application member to a side of the storage. A storage region is configured to be increased and decreased by changing a position of a second plug. The absorbing body is mounted to a distal end and is cuttable.

An electronic board includes a writing board, a sensor sheet including X parallel electrode lines and Y parallel electrode lines, a chassis to which the sensor sheet is bonded, a corner reinforcement plate disposed on the rear side of the chassis and supporting the chassis, and a bezel. The writing board, the sensor sheet, and the chassis are successively disposed in the mentioned order and are fixed together into an integral sensor unit. The corner reinforcement plate includes a top surface portion, a first lateral surface portion, a second lateral surface portion, and a chassis retaining portion. The sensor unit is sandwiched between the chassis retaining portion and the bezel.