Inventor
RICHEY JOHN PARKER
US14 patents
⚠️ This page may combine multiple inventors who share the name “RICHEY JOHN PARKER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LEXMARK INT INC
13 patentsUS6285383B1Sep 4, 2001
Method of controlling laser scanner phase in a multicolor electrophotographic machine
LEXMARK INT INC58 citations95
US7018121B2Mar 28, 2006
Combined paper and transparency sensor for an image forming apparatus
LEXMARK INT INC21 citations89
US6580881B2Jun 17, 2003
Method of detecting waste toner in a container of an image forming apparatus
LEXMARK INT INC34 citations88
US6560434B2May 6, 2003
Intermediate transfer member motion control via surface wheel feedback
LEXMARK INT INC15 citations83
US7593653B2Sep 22, 2009
Optical sensor system with a dynamic threshold for monitoring toner transfer in an image forming device
LEXMARK INT INC10 citations75
US6252618B1Jun 26, 2001
Method of controlling print registration in an electrophotographic machine
LEXMARK INT INC13 citations72
US6147699ANov 14, 2000
Low electromagnetic emissions and improved signal quality video drive architecture for laser printers
LEXMARK INT INC10 citations71
US5729270AMar 17, 1998
Toner conservation by pel modulation with operator control
LEXMARK INT INC10 citations71
US5650857AJul 22, 1997
Bit map adjustment preserving resolution
LEXMARK INT INC9 citations68
US7890006B2Feb 15, 2011
Characterization of toner patch sensor
LEXMARK INT INC2 citations62
US6459443B1Oct 1, 2002
Method of minimizing print delay due to mirror motor warm-up in an electrophotographic machine
LEXMARK INT INC4 citations62
US5986681ANov 16, 1999
Toner conservation by PEL modulation with operator control
LEXMARK INT INC3 citations60
US5783963AJul 21, 1998
ASIC with selectable output drivers
LEXMARK INT INC6 citations51