| 摘要 |
Solid and highlight developed image patches are formed, and their densities are measured with a development density sensor and stored into a control case memory as data constituting a control case. Two additional control cases are similarly stored into the control case memory while a scorotron set value and a laser set value are varied. Receiving these control cases through a status quantity comparator and a cluster memory, a control rule calculation unit determines a control rule. By properly combining the control rules, new operation quantities, i.e., a scorotron set value and a laser set value, are determined.
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