Optics: measuring and testing – Position or displacement – Position transverse to viewing axis
Reexamination Certificate
2007-11-08
2010-02-09
Toatley, Jr., Gregory J (Department: 2877)
Optics: measuring and testing
Position or displacement
Position transverse to viewing axis
C356S614000, C250S231130, C250S559290
Reexamination Certificate
active
07659996
ABSTRACT:
This patent specification describes a relative position detection device and a detector for a rotary body and an image forming apparatus including the relative position detection device. The relative position detection device includes a scale comprising a pattern continuously formed by changing reflectance or transmittance and moving in a direction, a light source to irradiate the scale, a light receiving unit to read the pattern and output a signal, and a signal processing unit to process the output signal of the light receiving unit. The pattern is formed by a line pattern having regularly spaced lines perpendicular to the direction of movement of the scale, the light receiving unit is slanted with respect to the lines, and the relative position detection device detects a relative position change and speed change of the scale.
REFERENCES:
patent: 3454777 (1969-07-01), Marcus
patent: 4079252 (1978-03-01), Brake
patent: 5572019 (1996-11-01), Sakuma
patent: 5575575 (1996-11-01), Ide et al.
patent: 5748373 (1998-05-01), Hane et al.
patent: 5837999 (1998-11-01), Horiuchi
patent: 6058224 (2000-05-01), Haga
patent: 6624407 (2003-09-01), Aboonasry et al.
patent: 6635863 (2003-10-01), Nihommori et al.
patent: 6642509 (2003-11-01), Miyata
patent: 7307736 (2007-12-01), Tobiason et al.
patent: 7324212 (2008-01-01), Mitchell et al.
patent: 7385179 (2008-06-01), Igaki et al.
patent: 2004/0022557 (2004-02-01), Kudo
patent: 2005/0072911 (2005-04-01), Kuroda et al.
patent: 2006/0116228 (2006-06-01), Kamiya et al.
patent: 2007/0086679 (2007-04-01), Kudo et al.
patent: 2007/0108376 (2007-05-01), Kudo et al.
patent: 01-287725 (1989-11-01), None
patent: 09-175687 (1997-07-01), None
patent: 10-281811 (1998-10-01), None
patent: 11-024507 (1999-01-01), None
patent: 2003-076486 (2003-03-01), None
patent: 2003-222504 (2003-08-01), None
patent: 2003-222505 (2003-08-01), None
patent: 2004-117010 (2004-04-01), None
patent: 2004-205308 (2004-07-01), None
patent: 2006-160512 (2006-06-01), None
Kudo Koichi
Takayama Hideyuki
Harness Dickey & Pierce
Ricoh & Company, Ltd.
Stock, Jr. Gordon J
Toatley Jr. Gregory J
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