CONTROLLING METHOD FOR IMAGE FORMATION
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专利名称：CONTROLLING METHOD FOR IMAGE FORMATION
发明人：SHIMIZU SHIYOUICHI,SAKAMAKI
HISASHI,KUGE TSUKASA
申请号：JP12095482
申请日：19820712
公开号：JPS5844452A
公开日：
19830315
专利内容由知识产权出版社提供
摘要：PURPOSE:To obtain a small-sized device of simplified constitution while realizing accurate control free of the influence of a noise, etc., by digitizing a signal obtained by detecting copying conditions, and performing arithmetic through a microcomputer and then finding a control value. CONSTITUTION:A reference lamp 22 flashes to form light and dark parts on a photosensitive drum surface, and their potentials are measured by a probe 21 to obtain a value (a), which is digitized by an A-D converter and stored in an RAM through a CPU. According to a prescribed program, the CPU decides on voltages to be applied to corona chargers 2 and 4 so that the drum surface potential has a reference value. On the basis of the voltage control signals, output equipment determines the voltage value of a charger power source transformer to control an AC high-voltage transformer and a DC transformer on the basis of an analog value obtained by a D-A converter.
申请人：CANON KK
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