Paper System Components
Tractors
The 2900 has two tractors to control paper movement, located on the left and right.
A lever on each tractor keeps it locked in place on a horizontal shaft. To reposi- tion a tractor, unlock the tractor and move it to the left or the right along the shaft. Repositioning is generally needed only when inserting a new form or size of paper.
Tractors
Open
locking
lever
Figure 1 - 6. Left and Right Paper Tractors
Print Gap
The 2900 printers offer Auto-Gap which simplifies operator set-up and printer use by setting the optimum print gap based on the form thickness. The print gap is automatically opened to its widest position when the printer is not printing. To accommodate various thicknesses of paper, the print gap is adjusted either automatically or manually. (See Chapter 2 pages 2-30 to 2-33 and Chapter 3 pages 3-56 to 3-58). If the Print Gap Detect Mode has been set to "Auto," the auto gap sensing operation will take place the first time the power is turned on, immediately after a "paper out" fault, when the TOF key is pressed, and when printing is attempted without setting the Top Of Form. Dedicated control panel keys also allow the print gap to be adjusted based on operator preference.
Paper Tension
Vertical tension on the paper is pre-set. It is not controlled by the user.
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