Microcom 814M Operators Manual - Manual (Page 30)

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− Paper roll space Allow space for the paper roll. There is a blue line in the space. If paper feeding
is controlled above the blue line, your printer is considered to be horizontal, otherwise, it is vertical.
For a horizontal installation, you need to control the paper roll above the space, mainly in order to
use the buffer mechanism of the print mechanism to avoid compression. For vertical installation,
add a buffer mechanism to the paper holder. In addition, if paper feeding touches the vertical
critical interface, please add a paper transition roller to the paper holder in order to prevent the
paper from touching any metal parts directly causing the paper to be damaged.
3. Separate paper holder installation
If possible, install the printer and paper holder together. If the paper holder has to be installed separately
be sure to pay attention to following items:
− For installation dimension, please refer to the Paper roll space above.
− Keep paper path smooth - avoid sharp folds which would cause drive overload.
− Avoid paper rubs with any sharp objects in order to prevent the paper damage.
− Make sure that paper keeps tension on the printer elastic shaft to get a buffer effect.
− Make sure that the paper center is consistent with the center of the paper feed path.
− The paper holder and paper shaft should be parallel with printhead, cutter, etc.
4. Notes when designing external paper out path
Take care to design your enclosure so that the paper feeds smoothly out. The paper path should align to
the printer so that the transition is smooth and without sharp bends or burrs.
Figure 4-23 Buffer Explanation