The present invention is a direct liquid type of writing tool including a pen tip; a columnar ink absorbent body connected to a rear end of the pen tip; an ink tank arranged on the ink absorbent body; and a plurality of communicating tubes for connecting the absorbent body and the ink tank. A front end of each of the communicating tubes is located in the ink absorbent body, and has a sloped surface facing an outer periphery side of the absorbent body. Each of the communicating tubes has an opening in the sloped surface at the front end and each has a tip end region adjacent to the opening and extending more frontward than the opening, and the tip end region forms a pressing part configured to press inside of the absorbent body when each of the tubes is inserted frontward from a rear end of the absorbent body.

The present invention is a direct liquid type of writing tool including a pen tip; a columnar ink absorbent body connected to a rear end of the pen tip; an ink tank arranged on the ink absorbent body; and a plurality of communicating tubes for connecting the absorbent body and the ink tank. A front end of each of the communicating tubes is located in the ink absorbent body, and has a sloped surface facing an outer periphery side of the absorbent body. Each of the communicating tubes has an opening in the sloped surface at the front end and each has a tip end region adjacent to the opening and extending more frontward than the opening, and the tip end region forms a pressing part configured to press inside of the absorbent body when each of the tubes is inserted frontward from a rear end of the absorbent body.

A writing tool has a pen tube, a capillary unit, and a dispensing unit. The capillary unit is mounted in the pen tube, and is connected to a nib. The dispensing unit is mounted in the pen tube, and has a communicating tube and a pressing segment connected to the communicating tube. The pressing segment has at least one connecting arm connected to the communicating tube. A dispensing interval is formed between the communicating tube and a periphery of the pressing segment. The communicating tube contacts the capillary unit to make the capillary unit form different compression densities via the pressing segment and the dispensing interval, thus facilitating dispensing ink downward easily through the dispensing interval and providing a better occlusion effect to further avoid ink leakage.

A writing tool has a pen tube, a capillary unit, and a dispensing unit. The capillary unit is mounted in the pen tube, and is connected to a nib. The dispensing unit is mounted in the pen tube, and has a communicating tube and a pressing segment connected to the communicating tube. The pressing segment has at least one connecting arm connected to the communicating tube. A dispensing interval is formed between the communicating tube and a periphery of the pressing segment. The communicating tube contacts the capillary unit to make the capillary unit form different compression densities via the pressing segment and the dispensing interval, thus facilitating dispensing ink downward easily through the dispensing interval and providing a better occlusion effect to further avoid ink leakage.

The present invention discloses a novel soft collet including a gripping part made of an elastic material and a connection part. The gripping part includes at least two fingertips matched with each other for gripping. A finger gap is formed between the fingertips, and a finger cavity is arranged inside each fingertip. The connection part includes a communication chamber which is communicating with each finger cavity. The connection part is provided with a communication port communicating with the communication chamber. The fingertip includes an inner wall close to the finger gap and an outer wall remote from the finger gap. The thickness of the inner wall is smaller than that of the outer wall, or the elastic modulus of the inner wall is smaller than that of the outer wall.

The present invention discloses a novel soft collet including a gripping part made of an elastic material and a connection part. The gripping part includes at least two fingertips matched with each other for gripping. A finger gap is formed between the fingertips, and a finger cavity is arranged inside each fingertip. The connection part includes a communication chamber which is communicating with each finger cavity. The connection part is provided with a communication port communicating with the communication chamber. The fingertip includes an inner wall close to the finger gap and an outer wall remote from the finger gap. The thickness of the inner wall is smaller than that of the outer wall, or the elastic modulus of the inner wall is smaller than that of the outer wall.

The present invention discloses a novel soft collet including a gripping part made of an elastic material and a connection part. The gripping part includes at least two fingertips matched with each other for gripping. A finger gap is formed between the fingertips, and a finger cavity is arranged inside each fingertip. The connection part includes a communication chamber which is communicating with each finger cavity. The connection part is provided with a communication port communicating with the communication chamber. The fingertip includes an inner wall close to the finger gap and an outer wall remote from the finger gap. The thickness of the inner wall is smaller than that of the outer wall, or the elastic modulus of the inner wall is smaller than that of the outer wall.

The present invention discloses a novel soft collet including a gripping part made of an elastic material and a connection part. The gripping part includes at least two fingertips matched with each other for gripping. A finger gap is formed between the fingertips, and a finger cavity is arranged inside each fingertip. The connection part includes a communication chamber which is communicating with each finger cavity. The connection part is provided with a communication port communicating with the communication chamber. The fingertip includes an inner wall close to the finger gap and an outer wall remote from the finger gap. The thickness of the inner wall is smaller than that of the outer wall, or the elastic modulus of the inner wall is smaller than that of the outer wall.

A writing instrument system including an elongated tip having a firm, felt or plastic nib and a piercing tip. The elongated tip includes a curvature that resembles a shape of a dolphin and the nib is positioned at a first-end of the elongated tip for distributing ink to a surface in a controlled manner. The elongated tip is in fluid communication with the nib. The elongated tip also includes the piercing tip which is able to penetrate an ink cartridge or tube of a pen and be removably affixed to a pen. The piercing tip is in fluid communication with the elongated tip and allows ink to flow from a penetrated ink cartridge or tube through the elongated tip to the nib where it can be applied to a surface.

This printing device is provided with a first ink container that contains a first ink; a second ink container that contains a second ink; temperature adjusting units that adjust the temperature of the first ink contained in the first ink container and/or the temperature of the second ink contained in the second ink container; a nozzle that sprays the inks; and a control unit that controls the first temperature adjusting unit and the second temperature adjusting unit.