System Overview
3.3.3 Functional Requirements of Fixing Unit (Fuser) Handling
The fixing control depends on its fixing mechanism. And according to a paper type, a paper size, an elapsed printed time, or the number of accumulated Printing Pages, a fixing control is different. Moreover, it may be different according to hardware specs, which are a flicker, an inner temperature and so on.
3.3.3.1 Print Mode
There are
At the
At the
At the printing mode, it controls the temperature of the fixing unit according to the paper type, the paper size, the number of accumulated printing pages, the elapsed printing time and the environment index.
3.3.3.2 Paper Type
The paper type is also one of major elements to decide the temperature of the fixing unit. According to the paper type, the temperature is different. Generally, a thick paper has higher temperature and OHP has lower temperature than a plain paper does. The fixing unit has a different temperature according to the paper type mentioned in 3.1.2.2. Paper Type
3.3.3.3 Paper Size
If the paper width is narrow, the temperature of fuser roller does not uniformly at overall surface of the roller. So in this case, the engine controls the interval of pick up of the paper.
But because it does not have a sensor for a paper width, it judges whether a paper width is a narrow paper by a paper length. If it judges a current paper size is below B5, it regards as a narrow paper. Normally, if a paper size is a narrow, the interval of pick up is lengthened according to an elapsed printing time and the number of accumulated Printing Pages.
3.3.3.4 Accumulated Printing Pages
If more pieces of paper are printed than the specified number of the paper, the inner temperature of machine may be saturated. In this case, the engine keeps the temperature of the fixing unit with the specified temperature. The accumulated printing pages are cleared at the sleep mode.
3.3.3.5 Elapsed Printing Time
If the printing job is done over the fixed time, the inner temperature of machine may be saturated. In this case, the engine keeps the temperature of the fixing unit with the specified temperature. The elapsed printing time is cleared at the sleep mode.
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