IBM 4693, Инструкция по установке и эксплуатации, Страница: 59 / 74

Created February 23, 1997
Appendix B. Operator and Programmer Information
This appendix has helpful techniques both for the operator and for the programmer, when using
point-of-sale printers.
Operator Techniques for the Point-of-Sale Printers
The following techniques should be followed by the operator.
¹
The operator must insert the form so that it is engaged between the feed rollers. The green sensor
light is activated before the form is between the rollers.
¹
The operator reduces the form twist by pushing the entire width of the form into the feed rollers.
¹
Bent, curled, or defective forms cause problems. The leading edge causes most of the problems.
Ensure that the form is flat.
– Crumpled or curled forms should be smoothed out or flattened as much as possible.
– Select forms from the middle of the stack. Forms on the top tend to curl. This method minimizes
form curl problems.
¹
Folded, wadded, crumpled, or damaged checks are difficult to feed through the printer.
1
The best solution is to fill the check out using a pen rather than attempt to use the printer.
2
If for some reason this cannot be done, the operator should flatten the check out as much as
possible before inserting it into the printer. The entire length of the check must be pushed into
the feed rollers to eliminate the form twist that occurs.
3
If the check does not feed out of the printer correctly, lift the printer cover to stop the printer from
tearing the check.
Note: Damaged checks may feed more reliably if they are inserted from the top rather than
from the front. The application program can allow the operator to insert the check from either
direction.
Application Program Techniques for Point-of-Sale Printers
If the printer jams repeatedly, there are techniques that the application programmer can use to ensure that
the printer should not jam:
1
Move the print head into position before prompting the operator to insert the form.
a. On narrow forms, move the print head to the left-most position. A narrow form is between 70 to
130 mm or 2 1/2 in. to 5 1/8 in. wide.
b. On wide forms or very narrow forms, move the print head to the center position before prompting
the operator to insert the form into the top or into the front of the printer.
Note: The application program should allow the operator to insert the form from the front and
top of the printer. The application can check the direction of insertion by reading the status of
the upper and lower document insert sensors.
2
The application program should check the status of the document insert Ready bit which gets turned
on when the form activates both document insert sensors.
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Copyright IBM Corp. 1994, 1995
B-1