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 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.

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 device for reproducing a color on demand. The device includes a body including a tip and a scanner. The body also includes a control unit, a plurality of ink reservoirs, an ink supply system, a mixing tank and a sensor. The control unit communicates with the scanner and ink supply system to reproduce a desired color that has been scanned.

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 pen for writing, referred to as a palm pen herein because the body of the pen fits into the palm of a human hand. The palm pen can include a spherically shaped body, and an ink delivery system. The ink delivery system can include a tip having an end connected to the body and an opposite end comprising a nib, an ink conduit having an end coupled to the nib within the tip and an opposite end extending inside the body, and a first ink cartridge fluidly coupled with the opposite end of the ink conduit and contained within the body. The ink delivery system can additionally include a cartridge holder having an active cartridge slot for the first ink cartridge and cartridge storage slots for storage of additional ink cartridges.

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

A writing instrument includes an elongated body housing a spool valve and a writing tip secured to a distal end of the elongated body. Two or more fluid reservoirs in selective fluid communication with the writing tip. Axial movement of the spool valve relative to the elongated body of the writing instrument alternately establishes fluid flow paths between the fluid reservoirs and the writing tip.

There are provided a printing method and a printing apparatus for increasing visibility and printed matter printed using the printing method. The printing apparatus sprays a light-absorbing composition to form a light-absorbing layer on a print medium, and then sprays a color-variable composition on the light-absorbing layer to form a color-variable layer.