The instant disclosure is directed to a heterogeneous fiber fluid reservoir for holding and delivering fluid. A reservoir may comprise a rod having a core component and a surrounding component. Each of the core component and the surrounding component may comprise fibers. The core component may have a first property, and the surrounding component may have a second property different from the first property, or the core component and the surrounding component may each have a different value or range of values for the same property. Alternatively, a reservoir may comprise a rod that includes fibers and has a cross-sectional diameter. At least one property of the rod may vary in value along the cross-sectional diameter of the rod. The property may include, for example, fiber bulk density, fiber diameter, fiber material, fiber morphology, fiber surface tension, capillary force, fluid absorption capacity, color, or combinations thereof.

Presented is a smart multi-color writing tool in the form of a pen having a color capture and replication capability, and is equipped with a novel ink dispensing, mixing, and delivery system. The multi color writing tool is configured to capture/scan any colors from variety of objects or images, store the captured colors from the objects or images within a local memory unit configured within the tool or transmit the same to a remotely located computing device, and make use of the captured colors for writing on, marking, or coloring objects, paper, and/or other suitable surfaces.

Provided is an integrated highlighting marker system. The marking system includes a multi-component marker ink comprising a base colorant and a tinting colorant. The marking system also includes a highlighting component configured to transform the base colorant from a first colored state to a second colored state based on the tinting colorant. The highlighting component may be configured to transform the primary base colorant from a colored state to a transparent state to reveal the tinting colorant.

A portable liquid dispensing apparatus is described, which comprises a battery, a heating element, a liquid reservoir, a pump, an outlet, and a pipe, extending from the reservoir to the outlet and passing adjacent the heating element. In operation, the pump drives liquid from the reservoir into and through the pipe while the power source causes the heating element to heat the liquid passing through the portion of the pipe adjacent to the heating element to be expelled from the outlet at a temperature greater than the ambient temperature.

A writing instrument includes a cylindrical outer housing, one end of the outer housing having an outer opening, and an electronic pen body stored in the outer housing. The electronic pen body includes a stylus, one end of the stylus in an axial direction of the stylus serving as a pen tip, and a cylindrical inner housing storing the stylus, the one end of the stylus serving as the pen tip extending from an inner opening at a distal end of the inner housing, the inner opening of the inner housing defining one axial end of a hole extending axially forming a stylus guide that enables the stylus to move axially. In operation, the pen tip of the stylus and a distal portion of the inner housing having the inner opening extend from the outer opening of the outer housing.

A writing instrument includes a cylindrical outer housing, one end of the outer housing having an outer opening, and an electronic pen body stored in the outer housing. The electronic pen body includes a stylus, one end of the stylus in an axial direction of the stylus serving as a pen tip, and a cylindrical inner housing storing the stylus, the one end of the stylus serving as the pen tip extending from an inner opening at a distal end of the inner housing, the inner opening of the inner housing defining one axial end of a hole extending axially forming a stylus guide that enables the stylus to move axially. In operation, the pen tip of the stylus and a distal portion of the inner housing having the inner opening extend from the outer opening of the outer housing.

A pressure regulating device for a writing tool has a deformable member. Minor air pressure variations in a pen tube of the writing tool can be regulated by deformation of the deformable member. Major air pressure variations in the pen tube can also be regulated by movement of the pressure regulating device. Thus, the pen tube of the writing tool can avoid internal air pressure imbalance caused by external high temperature or low air pressure. Before the writing tool is shipped from a manufacturer, the deformable member is pressurized in advance, such that the minor air pressure variation formed when a pen cap caps the writing tool offsets the air pressure pre-applied to the deformable member. Accordingly, ink inside an internal chamber does not spout out upon removal of the pen cap and the ink will not be overly dispensed or leak during writing.

A pressure regulating device for a writing tool has a deformable member. Minor air pressure variations in a pen tube of the writing tool can be regulated by deformation of the deformable member. Major air pressure variations in the pen tube can also be regulated by movement of the pressure regulating device. Thus, the pen tube of the writing tool can avoid internal air pressure imbalance caused by external high temperature or low air pressure. Before the writing tool is shipped from a manufacturer, the deformable member is pressurized in advance, such that the minor air pressure variation formed when a pen cap caps the writing tool offsets the air pressure pre-applied to the deformable member. Accordingly, ink inside an internal chamber does not spout out upon removal of the pen cap and the ink will not be overly dispensed or leak during writing.

A compact system to mix and create color materials is disclosed. The present invention generally related to a color creative system, in which a particular system is capable to create a final mix color of materials from multiple material reservoirs and dispensing the mixed color of material via applicator of choices, all in a single system that can be as small as a pen or a person's thumb or larger as desired. The system is manually operated.

Disclosed is a direct-liquid writing instrument. Two ends of a penholder (1) are provided with a writing portion (11) and an ink storage portion (12) respectively. A nib (3) is partly inserted into the writing portion (11). A first baffle (41) and a second baffle (42) of an adjusting portion (4) are spaced apart so that an air barrier layer (43) is formed between the two baffles. The first baffle (41) is in contact with the ink (13) of the ink storage portion (12). The second baffle (42) is adjacent to the writing portion (11). An ink feeder (2) passes through the first baffle (41), the air barrier layer (43) and the second baffle (42). The first baffle (41) is provided with a first air-guiding channel (8). A second air-guiding channel (7) is provided between the second baffle (42) and the ink feeder (2). At least one gap is formed between the second air-guiding channel (7) and the ink feeder (2). The present direct-liquid writing instrument has the advantages as follows: 1) a large storage capacity, low ink residuals, and fluency in writing; 2) prevention to leakage even under significant variation of external temperature and pressure; 3) simple and stable in structure, resistant to pressure difference and temperature difference, and convenient for transportation; 4) high ink utilization rate, convenient for usage, and less waste and environment pollution.