Data processing: generic control systems or specific application – Specific application – apparatus or process – Article handling
Reexamination Certificate
2007-02-06
2007-02-06
Tran, Khoi H. (Department: 3651)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Article handling
Reexamination Certificate
active
10927344
ABSTRACT:
A scale having marks disposed at a predetermined interval is provided on an intermediate transfer belt. A sensor detects the scale and outputs a binary signal. A counter counts a wave number of the binary signal. The wave number of the binary signal detected when the sensor detects a normal scale within a predetermined time is stored in a memory. A difference between the wave number stored and a wave number counted within a same period of time as the predetermined time is greater than a predetermined value, degradation of the scale and a change in a control of speed of the intermediate transfer belt into a control by a dummy signal is displayed on a display.
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Kudo Koichi
Takayama Hideyuki
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh Company Limited
Tran Khoi H.
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