Ink Reservoir Pens TRIZ Cases

Four retractable ink tips and color-coded switches make this card-shaped pen easy to store and use in wallet slots.

Positive then negative air pressure flushes residual ink and draws a measured refill through separate channels, avoiding manual cleaning.

Localized wall deformation secures smooth pen cartridges without threads, enabling reliable removal and replacement.

A capsule-like liquid container pierces via a sliding piston rod to release stored fluid through a dedicated channel.

A refillable felt pen nib integrates a dry ink tank with a breakable wall to release powder for water mixing.

Sloped communicating tube tips press the front of an ink absorbent body to form a high-density region for reliable capillary transport.

A retractable pen uses a pivoting ball shutter to seal the nib automatically.

A fountain pen replaces rigid piston seals with a deformable ink reservoir and elastic valve, eliminating leaks from temperature or pressure changes.

An ink-type pointer integrates a pen module with an electromagnetic unit to capture digital handwriting during physical writing.

Asymmetric joint structures prevent misalignment while a core cover eliminates void spaces that cause ink leakage.

A writing instrument delivers salt solutions to cholesteric liquid crystal substrates for dynamic color generation.

Segmented nibs channel ink and air separately, preventing pigment clogging while preserving visual intensity.

A writing instrument retracts its nib assembly into the housing to achieve a compact form factor.

A writing tool uses a pressing segment to compress a capillary unit, preventing lateral ink leakage through localized density regions.

Segmented main and writing tanks with finial-controlled seals prevent leakage from pressure differences while enabling rapid refilling.

An external pen closure uses a biased coil spring to seal the chamber opening.

Projection jaws on the holder limit pivot range of fan-shaped hinge shafts, preventing excessive rotation that causes incomplete sealing and ink drying.

A writing instrument tip features a visible liquid guiding part integrated into the holding member to feed ink through a relay porous member.

A localized ink reservoir prevents capillary evaporation and extends usability without requiring a physical cap mechanism.

Integrated hydrophobic inserts within the porous nib structure eliminate complex baffles, preventing ink leakage while maintaining reliable air balance.

Flexible silicone reservoir absorbs pressure fluctuations to prevent ink leakage, while valve system regulates flow for consistent writing.

Removing the central piston rod eliminates travel constraints, enabling the piston head to reach the barrel end and maximize stored ink capacity.

Offset nib geometry maintains natural hand posture while preventing ink smearing and paper jamming.

Composite multifilaments fuse low-melting-point and high-melting-point fibers to prevent density loosening in small diameter cores.

Inner housing protects the stylus from external force damage during deployment while maintaining accurate writing pressure detection.

A writing instrument uses a tip-mounted valve and elastic member to control coating liquid flow.

Elastomeric supports stabilize a self-healing seal component in retractable pens, preventing material build-up and ensuring reliable sealing integrity.

An orthogonal ink circulating part connects the inner hole to the outside, enabling reliable ink replenishment and extending pen usability.

An applicator valve stem features an air exchange hole that opens based on pressure differences to restore the ink tank shape after discharge.

A normally-open valve closes when internal pressure exceeds a threshold, preventing ink leaks caused by elevated reservoir pressure without clogging vents.

A double-locking clicker mechanism uses a lock button to engage retraction and extension shoulders on a plunger.

A braking unit decelerates rotation speed to reduce impact noise while enabling quick axial retraction.

A marker nib with a reversibly deformable applicator increases ink flow rate under pressure, enabling variable marking intensity without manual adjustment.

A deformable pouch holds dry absorbent polymer and fibers to store ink components in a compact form.

Valve isolates nib assembly from ink reservoir during refilling, preventing leakage caused by external pressure changes.

Replacing metal springs with a plastic spring actuator resolves material compatibility issues while maintaining reliable sealing performance.