发明授权
US5572310A Universal media size dial 失效
通用媒体尺寸拨号

Universal media size dial
摘要:
There is provided an apparatus for conveying a media's size to a printing system. First there is a rotatable shaft. Several cams are formed around the shaft. Each cam has a lobe extending beyond the radius of the shaft. A number of levers, one for each cam, pivot about a pivot point and have a tab that is adjacent to a corresponding cam. An indicator wheel is also attached to the shaft. The indicator wheel has a first set of faces located around the circumference of the indicator wheel, where each face indicates a media size. The indicator wheel has another set of faces that indicate a second set of media sizes. Finally, there is a slidable lever positioned adjacent to the indicator wheel. When the slidable lever is in a first position, only media sizes in the first set are visible and the presently visible size is the size conveyed to the printing system. Similarly, when the slidable lever is in a second position, only media sizes in the second set are visible and the presently visible size is the size conveyed to the printing system.
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