Marker for variable shading under pressure

A marker nib for applying ink to a surface comprising:

• an applicator having a writing tip configured to contact the surface to apply ink thereto, and a transporter configured to transport ink received from a reservoir to the applicator;
• wherein the applicator is reversibly deformable in compression from a first state to a second state, the applicator presenting a first flow rate in the first state and a second flow rate in the second state;
• wherein the applicator is configured to remain in the first state when a pressure applied to the applicator by the surface is less than or equal to a first value, and to enter the second state when the pressure applied to the applicator by the surface is greater than or equal to a second value greater than the first value;
• and
• wherein the marker nib extends along an axial direction, and wherein the applicator contacts the transporter over a first contact area in the first state, the first contact area has a length of 3 mm or more as measured along the axial direction in the first state.

A marker nib for applying ink to a surface, comprising an applicator having a writing tip configured to contact the surface to apply ink thereto, and a transporter configured to transport ink received from a reservoir to the applicator, the applicator being configured to increase its ink flow rate at the writing tip when pressure is applied thereto, thereby allowing to vary marking intensity by modulating the pressure applied to the surface by the applicator, wherein the applicator is reversibly deformable in compression from a first state to a second state, the applicator presenting a first flow rate in the first state and a second flow rate in the second state, and wherein the applicator is configured to remain in the first state when a pressure applied to the applicator by the surface is less than or equal to a first value, and to enter the second state when the pressure applied to the applicator by the surface is greater than or equal to a second value greater than the first value;

• wherein the applicator is in contact with the transporter over a first contact area in the first state, the applicator is in contact with the transporter over a second contact area in the second state, and the second contact area is greater than the first contact area;
• wherein the marker nib extends along an axial direction, and wherein the first contact area has a length of 3 mm or more as measured along the axial direction in the first state.