Electrophotography – Diagnostics – Document handling
Patent
1994-10-11
1997-03-18
Evans, Arthur G.
Electrophotography
Diagnostics
Document handling
399 9, 399 31, G06K 1500
Patent
active
056130473
ABSTRACT:
According to the present invention, a concept of functional quantities indicative of quantified functional degrees of such lower-level functions as "clearer characters", "cleaner background", and "thicker characters", which are subordinating to a qualification-oriented function of "more beautiful characters". Characteristic patterns of functional quantities F1, F2 and F3 of the lower-level functions for physical parameters (for example, the surface potential of a photoreceptor body) are prepared. When a fault repair is implemented by changing a value of a physical parameter, a tradeoff occurs between lower-level functions which are influenced by the physical parameter. That is, taking into account the functional quantities F1, F2 and F3 of the lower-level functions, the value of the physical parameter is set so that the functional quantity of the function of "more beautiful characters" is maximized. By introducing the concept of the functional quantities indicative of the quantified functional degrees of the functions, a flexible self-repairing function can be realized, thereby optimizing a repair operation.
REFERENCES:
patent: 4609283 (1986-09-01), Murata et al.
patent: 5317368 (1994-05-01), Shimomura
patent: 5396314 (1995-03-01), Umeda
patent: 5485246 (1996-01-01), Hayashi et al.
Mori Yukihiro
Shimomura Yoshiki
Tanigawa Sadao
Tomiyama Tetsuo
Umeda Yasushi
Evans Arthur G.
Mata Industrial, Co., Ltd.
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