| 摘要 |
An electrostatographic machine is disclosed with at least one adjustable process control parameter. The machine electronically stores electrical test image information signals. A reproduction of the test image is created using the electrical information signal, and a second electrical information signal is in turn created from the reproduction. The second electrical information signal is compared with the first electrical information signal to produce an error signal representative of differences therebetween. The process control parameter is adjusted in response to the error signal to minimize said differences.
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