A fluid application device including a reservoir intended to contain a free fluid and a fluid delivery device, wherein the reservoir is sealed by a valve having a self-healing material. The fluid application device includes a tubular means for piercing the valve and for simultaneously placing fluid from the reservoir in communication with the fluid delivery device.

An applicator in which an applying body consisting of a brush is surely attached to a front barrel to solve a problem that a part of the brush remains stuck inside the front barrel to cause failure of attachment when the applying body is being attached to the front barrel. The applicator includes a front barrel provided on the front end side of a rear barrel, and an applying body formed of a brush with a flange portion at its rear end and arranged inside the front barrel. A receiving part of the flange portion of the applying body and the inner face of the front barrel are in contact with each other in a non-surface contact manner.

An example dry eraser and associated systems and methods are described. The example dry eraser includes a body with a top wall, a bottom wall, a front wall, a rear wall, and first and second side walls. The body includes a hollow interior configured and dimensioned to receive therein a plurality of individual wipes. The top wall of the body includes an opening configured and dimensioned to dispense therefrom the plurality of individual wipes. The dry eraser includes an erasure material disposed on at least a portion of the bottom wall of the body.

An example dry eraser and associated systems and methods are described. The example dry eraser includes a body including a top wall, a bottom wall, a front wall, a rear wall, and first and second side walls. The body includes a first hollow inner compartment configured and dimensioned to receive therein a cleaning fluid that is configured to be dispensed from the first hollow inner compartment via a nozzle disposed proximate to the front or rear wall of the body. The dry eraser includes an erasure material disposed on at least a portion of the bottom wall of the body.

The present invention provides devices, systems, and methods for refilling a refillable fluid applicator, such as but not limited to a refillable dry erase marker. The devices, systems, and methods of the present invention advantageously allow the fluid applicator to be refilled quickly, easily, and inexpensively, and provide the benefit of significantly reducing the quantity of solid plastic waste associated with conventional disposable dry erase markers and other fluid applicators.

The present invention to provide an applicator which can solve the problems such as attachment failure of an applying body of a brush due to part of the brush stuck remaining inside the front barrel when the brush-formed applying body is attached to the front barrel to thereby reliably attach the brush-formed applying body to the front barrel. The applicator includes: a rear barrel 20 storing an application liquid in a storage portion 21 inside a barrel cylinder; a front barrel 10 provided on the front end side of the rear barrel 20; and an applying body 40, formed of a brush with a flange portion 41 at its rear end, and arranged inside the front barrel 10 so as to supply the application liquid to the applying body 40 from the storage portion 21 inside the rear barrel 20, and is characterized in that a receiving part 42 of the flange portion 41 of the applying body 40 and the inner face of the front barrel 10 are in contact with each other in a non-surface contact manner.

A mess-free coloring system comprising a coloring medium and optionally one or more coloring utensils is disclosed. The coloring medium can include a substrate with or without decorative effects and one or more coating layers on a surface of the substrate. In various examples, the one or more coating layers include a color-triggering developer, e.g., in the form of a substantially clear resin, and an opaque pigment. Decorative effects integrated with or disposed on the substrate, while initially obscured by the one or more coating layers, can be revealed when the coating layers are mixed with at least one color precursor stored and dispensed from a coloring utensil. The opaque pigment is selected and configured such that, upon receipt of at least one color precursor by the one or more coating layers, a change in the pigment's reflective index occurs as the pigment dissolves into the clear resin developer.

A mess-free coloring system comprising a coloring medium and optionally one or more coloring utensils is disclosed. The coloring medium can include a substrate with or without decorative effects and one or more coating layers on a surface of the substrate. In various examples, the one or more coating layers include a color-triggering developer, e.g., in the form of a substantially clear resin, and an opaque pigment. Decorative effects integrated with or disposed on the substrate, while initially obscured by the one or more coating layers, can be revealed when the coating layers are mixed with at least one color precursor stored and dispensed from a coloring utensil. The opaque pigment is selected and configured such that, upon receipt of at least one color precursor by the one or more coating layers, a change in the pigment's reflective index occurs as the pigment dissolves into the clear resin developer.

The present invention provides devices, systems, and methods for refilling a refillable fluid applicator, such as but not limited to a refillable dry erase marker. The devices, systems, and methods of the present invention advantageously allow the fluid applicator to be refilled quickly, easily, and inexpensively, and provide the benefit of significantly reducing the quantity of solid plastic waste associated with conventional disposable dry erase markers and other fluid applicators.

A writing instrument includes a first reservoir for dispensing a first fluid having a first property of reflectivity. A first tip member is in fluid connection with the first reservoir. The first tip member has an end with a size and shape that corresponds to a response area of the response form. A second reservoir can be used for dispensing a second fluid, which is capable of modifying the first property of reflectivity when covering the first fluid. A second tip member is in fluid connection with the second reservoir. The second tip member has an end with a size and shape that corresponds to the response area of the response form.