Other Printing Apparatus TRIZ Cases

A two-step ink ejection process prevents coalescence on non-permeable materials by applying a coagulant treatment agent before final ink deposition.

A liquid cartridge aligns a sensor and output terminal on one housing surface to detect fluid communication via a movable member.

An oscillation shaft absorbs lateral tension differences to prevent skew and lifting during printer media transport.

A recording device control unit cuts remaining medium to a predefined length before discharge.

Segmenting the liquid chamber allows the controller to update viscosity estimates per region, resolving sedimentation errors after mounting.

A printing apparatus adjusts pressing force on media to control transport resistance and prevent unnecessary movement.

Segmented guide portions prevent recording paper from catching during backward feeding after cutting, resolving jams without adding structural complexity.

Curved guide surfaces redirect trailing sheet ends to reduce contact pressure, preventing glossy recording surface damage.

A printer transport speed controller determines intermediate speeds between current and target values for sequential motor adjustment.

Vacuum manifolds deflect print media away from lineheads to prevent buckling caused by moisture-induced expansion.

Back-surface cooling prevents mirror deformation under high-intensity UV light, maintaining uniform ink curing and printing speed.

High impedance regions in vacuum platen channels reduce crossflows that cause image blur, ensuring accurate ink droplet placement.

A drive waveform generating unit produces multiple signals within one printing period to control liquid discharge head droplet formation.

A printing control apparatus detects sheet width to determine the appropriate size for image output.

A power loss protection circuit maintains VDD_plp to printhead fire control circuitry.

A liquid ejection device positions the cartridge attachment portion and power transmission mechanism on the same side of the holder.

Ribbed transport guide manages downward and upward warp to prevent jamming and image defects.

Cutting medium upstream of the downstream roller reduces material waste while maintaining precise detachment control.

Adjusts drying unit heating temperature based on liquid evaporation correspondence data to ensure proper medium dryness.

Segmented ribs guide viscous ink flow through a discharge port, preventing foreign object clogging during head cleaning.

A printing device controller selects between a battery and an external power source based on voltage levels.

A density correction system uses two inkjet heads with different droplet volumes to adjust drop counts per pixel.

A return valve blocks liquid flow in the return path during pressure lowering, preventing ink from entering the return flow path and reducing nozzle clogging.

An inkjet printer bypass line with an umbrella valve maintains negative pressure at nozzles to prevent air bubbles and reduce ink wastage.

Sequential pump activation fills separate tanks independently, resolving the contradiction between rapid supply speed and device complexity.

Dual nozzle arrays print detection patterns at identical positions, enabling precise shift measurement without expanding the printing area.

Differential impedance measurements diagnose blockages and stray bubbles, maintaining printing reliability without complex mechanical diagnostics.

A guide member extends along the transport direction to direct the medium away from the air blowing port.

Detects anomalous drying modules and adjusts output or conveyance speed to prevent productivity degradation from reduced module performance.

A printing unit determines preliminary ejection positions based on image data ranges to minimize unnecessary carriage scans.

Preheating the printing medium reduces porosity before ink transfer, preventing penetration and maintaining high printing accuracy.

A liquid ejecting apparatus positions supply, maintenance, and selector units in a non-overlapping layout within the housing.

A liquid ejection head uses a depressed housing portion to fix the electrical wiring board near its bent section.

A blocking wall prevents external light from interfering with the sensor, ensuring accurate medium positioning.

Angled air guide structure directs airflow through carrier plate openings to stabilize media positioning during inkjet printing.

A discharge timing controller adjusts ink ejection based on a detection hole position to align nozzle flushing with conveying belt openings.

Dynamic exhaust fan speed manages recording head temperature while minimizing power consumption during idle periods.

A printing method applies a first photocurable ink layer to a medium before curing it, forming a compatible interface for subsequent image layers.

Segmenting the cutting mechanism into a removable blade holder resolves maintenance complexity in label printers.

A printer medium support mechanism uses a leaf spring to move the holding portion away from the support face.

A multifunction apparatus control unit adjusts document discharge port positions to prevent collisions with recording media.

Controller calculates residual ink pressure from ejection data to adjust printing modes, preventing nozzle clogging without physical sensors.

A light collector gathers scattered photons from ejected ink droplets to generate precise detection signals.

Segmenting color and clear ink printing into multiple scan passes suppresses haze while maintaining image clarity during gloss adjustment.

Separating common electrode wiring to the opposite side of a flexible printed circuit reduces voltage drop and enables smaller liquid ejection heads.

A printer cutting device uses a position holding portion to maintain blade alignment without continuous motor rotation.

A pressure regulating valve adjusts its open/close differential to control fluid flow during liquid ejection operations.

A head unit integrates a determination circuit to assess piezoelectric power storage capability.

A pressure control device regulates suction passage pressure to maintain gas-permeable film integrity in liquid-droplet ejecting apparatuses.