Electrographic Process Apparatus TRIZ Cases

A rotatable junction unit guide minimizes the physical footprint of sheet conveyance mechanisms within compact image forming apparatuses.

Rotating the coupling ensures proper terminal contact, resolving engagement failures that block genuine toner container information acquisition.

Return rollers move sheets back while pressing members apply pressure to counter electrostatic clinging forces that push out subsequent sheets.

A second-image adjustment value calculator detects first image position to compute alignment parameters for the second face of a recording medium.

A power control unit starts heating during the transition from pressure release to pressurization in an image forming apparatus.

Correction unit synchronizes timing with latent image bearer rotation to suppress wormhole images and stabilize output.

A control unit adjusts secondary transfer bias based on roll external diameter to maintain consistent toner image transfer.

A ratchet drive mechanism regulates coupling member movement through specific contact portions to ensure smooth operation.

A movable white reference plate and black member shield stray light during sheet measurement, eliminating distance variations that degrade color accuracy.

Controller corrects transfer voltage based on real-time detection results to prevent transfer defects caused by resistance fluctuations in the transfer roller.

A toner resin particle combines a polyhydroxycarboxylic acid skeleton with a polyester covering layer to enhance image density.

An elastic developing blade incorporates a restricting member to control toner fluidity upstream, preventing concentration unevenness in printed images.

Presetting gain values per light-emitting point resolves varying dynamic ranges, ensuring detection accuracy across the array.

A roller-shaped rotator uses an elastic thin plate base member to press against an endless belt.

Reduces monochrome light source optical output during full-color image formation to prevent premature photoreceptor deterioration and extend component lifespan.

A remanufactured toner cartridge driven gear shifts between coupled and uncoupled states to control seal removal activation.

A power supply unit provides energy to a consumable memory only during active access periods.

A sheet feeding unit manages recording sheets of multiple sizes to maintain printing continuity.

Segmented exhaust ducts with independent centrifugal fans maintain intake airflow while high-density filters collect ultrafine particles.

An automatic agitation member rotates hardened toner to prevent leakage during refilling.

Replacing mechanical sensors with an optical shutter system reduces apparatus volume while preventing light leakage during cover opening.

A sheet-like shutter with a curvature shape imparting mechanism covers the corona charger opening.

A movable receiving member guides sheet leading and trailing ends to prevent stacking disorder.

A tandem electrophotographic apparatus uses a specific cleaning blade pressure ratio between adjacent units to remove toner effectively.

A movable holding member positions an intermediate transfer belt to maintain precise clearance from a photosensitive drum during mode transitions.

A control circuit adjusts power to fixing and bonding heaters based on inlet current detection.

Segmented communicating portions and asymmetric bottom surfaces direct developer flow to prevent uneven toner image density across the developing roller.

Composite elastic layers in a pressure roller reduce rising time and prevent temperature rise at non-paper-passing regions to minimize gloss unevenness.

Precise Mw range and gel component regulation resolve grindability contradictions while ensuring production efficiency.

Resin contact portions mitigate stick-slip vibrations to enhance temperature measurement accuracy in fixing devices.

Horizontal first and second ducts overlap vertically to suppress toner remelting without increasing apparatus height.

A charging potential control unit manages electrophotographic photosensitive members using discharge detection for precise voltage regulation.

Segmented heaters and sensors control latitudinal temperature distribution in a fixing belt, preventing overheating during variable-width media processing.

A cylindrical film groove redirects lubricant inward, preventing migration and contamination of the fixing device.

A swingable frame adjusts fin angles to moderate developer height, preventing uneven accumulation and overflow in image forming apparatuses.

A sensor cover with an electrically conductive surface connected to the main body dissipates static charge from the recording medium.

Controller switches between automatic discrimination and user specified modes based on image quality feedback to resolve setting mistakes.

A developing device adjusts toner particle size and bias voltage to ensure uniform adhesion on the photoreceptor drum.

Dual electrode current sensing determines paper electrical properties for precise toner image transfer.

Segmented flexible sheet members apply counterbalancing forces to prevent conveyance member warping, reducing sliding resistance and noise.

Predicts sheet slip at the transfer nip to pre-adjust latent images, preventing rear edge stains and jams during two-side printing.

A powder supplying device uses a gas blowout part to reduce toner bulk density and enable precise suction transport.

Snap fit portions release a lock state when pushed by the toner cartridge, preventing unintended toner dispersion during transport.

Adjustable nip width between heating member and pressure roller optimizes thermal transfer during image fixing operations.

A heater energization control circuit estimates surface temperature using a thermal CR model and power supply voltage data.

A belt transfer multi-function device uses electromagnetic sensors to detect security paper before image formation.