A writing instrument, in particular a pen, comprises a housing comprising a front barrel and a rear barrel, the front barrel having a front opening, two or more cartridges for storing colorants or inks, each cartridge having a writing tip, at least one actuator for selectively moving one of the cartridges within the housing so that the writing tip of a selected cartridge extends through the front opening of the front barrel, and a cartridge guide member which is designed to guide the movement of the cartridges within the housing. The front barrel and to the cartridge guide member are designed to be removed from the rear barrel for replacing one or more of the cartridges. In particular, the front barrel and the cartridge guide member may be removed from the rear barrel while the cartridge guide member may remain mounted to the front member at the same time.

The multi pen dry erase marker consists of two to six color dry erase pens that are spring loaded into an ergonomic housing and designed to be used with one hand only. Changing of colors is easy to do by pushing a button to add a pen color. To remove a color the pen is pushed back into the housing which locks it back in place. The end cap of the marker has a large felt or sponge tip to easily erase using a standard whiteboard. A storage cap protects the pens from drying out when being stored.

An approach is provided for converting color data into one or more musical notes. The approach involves reading, using a color-reading device, respective colors applied to a canvas by a plurality of drawing instruments as color data, wherein each of the plurality of drawing instruments is configured to draw in respective colors of a color palette, and wherein the respective colors of the color palette correspond respectively to a set of musical notes. The approach also involves processing, using a color processing module, the color data to generate a composition of the one or more musical notes from the color data based on a set of musical notes that correspond to the respective colors in the color data.

A writing instrument comprising a housing extending in a longitudinal direction and having a radial direction, and first and second concentric writing tips, the second writing tip arranged around the first writing tip, each writing tip received in the housing and able to assume an operating configuration, the housing comprising, at a longitudinal end, a deformable nose at least in the radial direction, the deformable nose comprising at least one slit extending in the longitudinal direction, the deformable nose not being deformed when only the first writing tip is in an operating configuration and the deformable nose being deformed when the second writing tip is in an operating configuration, the deformable nose comprising an exit opening of the first and second writing tips, the diameter of the exit opening being greater than the diameter of the first writing tip and less than that of the second writing tip.

A writing instrument comprising a housing extending in a longitudinal direction and having a radial direction, and first and second concentric writing tips, the second writing tip arranged around the first writing tip, each writing tip received in the housing and able to assume an operating configuration, the housing comprising, at a longitudinal end, a deformable nose at least in the radial direction, the deformable nose comprising at least one slit extending in the longitudinal direction, the deformable nose not being deformed when only the first writing tip is in an operating configuration and the deformable nose being deformed when the second writing tip is in an operating configuration, the deformable nose comprising an exit opening of the first and second writing tips, the diameter of the exit opening being greater than the diameter of the first writing tip and less than that of the second writing tip.

An integrated highlighting marker 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.

The multi pen dry erase marker consists of two to six color dry erase pens that are spring loaded into an ergonomic housing and designed to be used with one hand only. Changing of colors is easy to do by pushing a button to add a pen color. To remove a color the pen is pushed back into the housing which locks it back in place. The end cap of the marker has a large felt or sponge tip to easily erase using a standard whiteboard. A storage cap protects the pens from drying out when being stored.

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 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 multifunction pen includes plural refills including an electromagnetic induction touch pen. A knock operation to one of knock rods each of which is connected to a rear end of each of the plural refills causes a tip of one refill of the plural refills to move from a standby position in which the tip stays inside a shaft tube to an in-use position in which the tip projects from a tip end opening of the shaft tube. At least one refill from writing refills other than the electromagnetic induction touch pen is provided with a metal writing tip, and a tip of the electromagnetic induction touch pen at the in-use position is separated from the tips of the writing refills at the standby position by a distance such that electromagnetic induction by the electromagnetic induction touch pen is not affected by the tips of the writing refills.