Capacity Of Compiler Unit Assembly; Compiler Unit Assembly Operation With Multiple Media Sizes; Tamping - Lexmark W850n Manual

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Capacity of compiler unit assembly

Media volume that can be stacked on the compiler unit assembly is limited as shown in the table below.
The number of sheets depends on whether media is stapled or not, as well as on media size.
If the number of sheets of one set to be stapled exceeds the limit, the exceeding sheets are not stacked on the
compiler unit assembly, and are forcibly ejected to the stacker media bin without being stapled.
This forcible ejection is performed to prevent damage to the staple assembly.
When feeding large media in the non-staple mode, there may be a misalignment depending on media
characteristics. For this reason, the default media capacity is set to a smaller value.
Compiler unit assembly media capacity
Condition
Staple mode
For small media (less than 216 mm in the feed direction) in
non-staple mode
For large media (216 mm or more in the feed direction) in
non-staple mode

Compiler unit assembly operation with multiple media sizes

When two or more media sizes are used and their widths are same (example: A4L and A3S), all the sheets are
compiled and stapled as a set on the compiler unit assembly, and then ejected to the stacker media bin.
While if two or more media sizes with different media width are used, stapling media on the compiler unit
assembly is stopped when a different size is detected. Such different-size sheets of media are forcibly ejected to
the stacker media bin.

Tamping

When media is fed from the punch to the compiler unit assembly, tamping operation is performed to align the
media in the media width direction on the compiler unit assembly.
Tamping is an operation to align media to the specified position on the compiler unit assembly using the front
tamper or rear tamper by moving them to the end of media by the respective motors.
Tamping is executed each time when a sheet of media reaches the compiler unit assembly. Additional tamping is
executed after tamping the last sheet.
There are three types of tamping.
•
Front tamping—tamping by the rear tamper with the front tamper fixed at the home position
•
Rear tamping—tamping by the front tamper with the rear tamper fixed at the home position
•
Center tamping—tamping by the front and rear tampers to align media to the almost center
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Finisher Service Manual
Min. Default Max.
2 50 75
10 50 100
10 25 100