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发明名称
DENSITY ADJUSTING METHOD FOR ELECTRONIC BLACKBOARD
摘要
申请公布号
JPS6387862(A)
申请公布日期
1988.04.19
申请号
JP19860232800
申请日期
1986.09.30
申请人
RICOH CO LTD
发明人
TAKAHASHI SHUJI
分类号
H04N1/00;H04N1/04
主分类号
H04N1/00
代理机构
代理人
主权项
地址
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