Inventor
HATAKEYAMA KUMIKO
JP18 patents
⚠️ This page may combine multiple inventors who share the name “HATAKEYAMA KUMIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
9 patentsUS7315711B2Jan 1, 2008
Image forming apparatus, process cartridge and cleaningless system
RICOH KK25 citations92
US7218879B2May 15, 2007
Image forming apparatus controlling polarity of residual toner and process cartridge for use in the same
RICOH KK39 citations92
US7826787B2Nov 2, 2010
Protective-agent applying device, process cartridge, and image forming apparatus
RICOH KK8 citations84
US7734242B2Jun 8, 2010
Protective layer setting unit, process cartridge, and image forming apparatus using same
RICOH KK13 citations84
US7583914B2Sep 1, 2009
Charge member, charge apparatus, process cartridge, and image forming apparatus
RICOH KK10 citations84
US7738829B2Jun 15, 2010
Process cartridge including photoconductor pre-coated with protective agent and image forming apparatus using same
RICOH KK4 citations63
US7693476B2Apr 6, 2010
Image forming apparatus with protective agent applying unit and process cartridge
RICOH KK2 citations63
US7499664B2Mar 3, 2009
Image processing apparatus, process cartridge, and cleaning system with residual toner retaining unit
RICOH KK5 citations63
US7639957B2Dec 29, 2009
Image forming apparatus including controller to detect condition of image developer
RICOH KK5 citations62
RICOH CO LTD
6 patentsUS7991342B2Aug 2, 2011
Protective material and image forming apparatus using the protective material
RICOH CO LTD8 citations84
US7986910B2Jul 26, 2011
Lubricant coater, image bearing unit, and image forming apparatus
RICOH CO LTD6 citations63
US7979016B2Jul 12, 2011
Image forming apparatus and protective agent block
RICOH CO LTD3 citations63
US8374537B2Feb 12, 2013
Image forming apparatus, protectant applicator and process cartridge
RICOH CO LTD1 citations52
US7840152B2Nov 23, 2010
Image forming apparatus, process cartridge, cleaning system, and image forming apparatus with cleaning system
RICOH CO LTD1 citations52
US7991327B2Aug 2, 2011
Image forming apparatus and process cartridge
RICOH CO LTD0 citations41
HATAKEYAMA KUMIKO
3 patentsUS8180271B2May 15, 2012
Protective layer setting unit, process cartridge, and image forming apparatus, and method of evaluating protective layer setting unit
HATAKEYAMA KUMIKO5 citations60
US8340562B2Dec 25, 2012
Image forming apparatus, protective agent and process cartridge
HATAKEYAMA KUMIKO1 citations50
US8509670B2Aug 13, 2013
Image bearing member to which boron nitride is attached
HATAKEYAMA KUMIKO0 citations39