Inventor
TAKEYAMA YOSHINOBU
JP30 patents
⚠️ This page may combine multiple inventors who share the name “TAKEYAMA YOSHINOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
24 patentsUS6157797ADec 5, 2000
Image forming apparatus with integrated rotatable image carrier and writing device and method of assembling the same
RICOH KK54 citations96
US6292641B1Sep 18, 2001
Image forming apparatus selectively operating one of a plurality of developing units and a method for controlling a switching operation for the developing units
RICOH KK46 citations92
US6222566B1Apr 24, 2001
Image formation apparatus and method thereof
RICOH KK38 citations92
US5294944AMar 15, 1994
Color image forming apparatus having means for properly superimposing image colors on each other
RICOH KK46 citations92
US5258780ANov 2, 1993
Beam recorder forming low density dots
RICOH KK50 citations92
US4962431AOct 9, 1990
Synchronizing signal generating system for laser scanner
RICOH KK41 citations92
US4888777ADec 19, 1989
Semiconductor laser control apparatus
RICOH KK27 citations92
US4837588AJun 6, 1989
Synchronizing signal generating system for laser scanner
RICOH KK25 citations92
US6256461B1Jul 3, 2001
Image forming apparatus with an intermediate transfer body including reference markers for controlling the same
RICOH KK46 citations91
US4835780AMay 30, 1989
Semiconductor laser output control circuit
RICOH KK51 citations89
US6263178B1Jul 17, 2001
Method of applying a bias voltage for image development and method of switching the bias voltage in an image forming apparatus
RICOH KK19 citations84
US6919911B2Jul 19, 2005
Image forming apparatus
RICOH KK10 citations74
US6891554B2May 10, 2005
Method and device for writing control and image forming device
RICOH KK8 citations74
US5122678AJun 16, 1992
Image clock signal generating system with initial phase matching means in phase-locked loop
RICOH KK12 citations74
US5095315AMar 10, 1992
Multipoint synchronization optical writing apparatus
RICOH KK9 citations74
US5059987AOct 22, 1991
Synchronizing signal generating system
RICOH KK16 citations73
US7725045B2May 25, 2010
Image forming apparatus to reduce a number of signal lines
RICOH KK3 citations63
US7450138B2Nov 11, 2008
Controlling timing for starting image formation
RICOH KK4 citations63
US7247840B2Jul 24, 2007
Image forming apparatus, and method of correcting timing for generating laser beams
RICOH KK2 citations63
US7656420B2Feb 2, 2010
Controlling timing for starting image formation
RICOH KK0 citations52
US7583281B2Sep 1, 2009
Image forming apparatus
RICOH KK0 citations52
US7502584B2Mar 10, 2009
Image forming apparatus sensing displacement of an intermediate image transfer body
RICOH KK1 citations52
US7499066B2Mar 3, 2009
Image forming apparatus with improved capability of image superposition
RICOH KK2 citations52
US7515857B2Apr 7, 2009
Image forming apparatus
RICOH KK0 citations42
TAKEYAMA YOSHINOBU
3 patentsUS8570555B2Oct 29, 2013
Image forming apparatus with an identification control unit having an identification signal line, a data line, and a period signal line
TAKEYAMA YOSHINOBU0 citations38
US8190038B2May 29, 2012
Image formation apparatus capable of reducing the number of output signal lines
TAKEYAMA YOSHINOBU0 citations38
US8102550B2Jan 24, 2012
Image-forming apparatus utilizing reduced signal lines
TAKEYAMA YOSHINOBU0 citations38