Inventor

TATSUMI KENZO

JP51 patents

⚠️ This page may combine multiple inventors who share the name “TATSUMI KENZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TATSUMI KENZO

RICOH KK

Image forming apparatus, toner supply unit, and toner bottle attached thereto

Toner container, toner supply device and image forming apparatus

Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal

Image forming device with improved mixing of circulated developer with replensihed toner

Toner bottle

Detachable toner supply and processing assembly for an image forming apparatus and having a shutter mechanism for toner flow control

Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper

Image forming apparatus with improved toner density control

Image forming apparatus having detachable transfer roller and discharge device

Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper

Method of and system for cleaning roller members

Image forming apparatus and method for controlling charging and developing bias voltage

Toner recovery belt conveyor, process cartridge, and image forming apparatus using the same

Toner for electrophotography, developer using the same, image-forming process cartridge using the same, image-forming apparatus using the same and image-forming process using the same

Toner for electrophotography, developer using the same, image-forming process cartridge using the same, image-forming apparatus using the same and image-forming process using the same

Developing device and image forming apparatus including the same

Toner container, toner supply device and image forming apparatus

Image forming apparatus

Image forming apparatus and method for automatically adjusting toner density in response to humidity variations

Toner collecting device, image forming unit and image forming apparatus

Process cartridge for image forming apparatus

Process cartridge for image forming apparatus

Process cartridge for image forming apparatus

Developing device and image forming device

Developing device and an image forming apparatus including the same

Process cartridge for image forming apparatus

Process cartridge for image forming apparatus

Charging-roller bearing member, process cartridge, and image forming apparatus

Conveyor device, process cartridge, image forming apparatus, and method of forming image

RICOH CO LTD

Toner conveying device, process cartridge, and image forming apparatus

Toner container, image forming apparatus, method of recycling toner container

Toner bottle

Developing device of image forming apparatus

Developing device and image forming apparatus that uses this developing device

Developing device, process cartridge and image forming apparatus

Waste-toner collecting device, process cartridge, and image forming apparatus

Waste-toner housing device, and image forming apparatus

Powder conveyance device, toner conveyance device, process cartridge and image forming apparatus

Cleaning device and image forming apparatus

Image forming method and apparatus for effectively positioning an image forming member

KUBOTA TOMOHIRO

Toner cartridge with refillable fresh and residual toner chambers, process cartridge, and method of making toner cartridge reusable

Seal member, developing device, process cartridge, and image forming apparatus

Seal member, developing device, process cartridge, and image forming apparatus

YOSHIDA TOMOFUMI

Toner-collecting device and image forming apparatus

Powder transport screw, and development device, process unit and image-forming apparatus comprising this powder transport screw

Toner agitating unit, toner hopper, process cartridge, and image forming apparatus

SHIMIZU YOSHIYUKI

Toner conveyer device, process cartridge, and image forming apparatus

Latent image carrier having pairs of first and second positioning protrusions and image forming apparatus

KAWAKAMI YOSHIHIRO

Process cartridge and image forming apparatus

OOYOSHI HIROBUMI

Developing device, process unit, and image forming apparatus, with supporting members, grooves, and supported developing roller