Recommendations to Optimize Envelope Feeding on OKI C931/941/C942/DP Color Printers
The following recommendations address paper jams due to envelope feeder timing, and help to reduce
printer pausing. The results optimize throughput when printing Com-10 envelopes with an envelope
feeder attached to the C931, C941 or C942.
1. Update the printer firmware to suite version is A01.35 (or higher). An outline of the update process
and a link to the web-site are included near the end of this document.
2. Ensure the following printer menu settings are set at the operator panel:
a) Menu Print Adjust Narrow Paper Speed = Normal 2; Press OK to set and then press On Line
3. Sleep mode and power save modes can be adjusted to avoid excessive warm-up times in-between
jobs. For example, adjust Power Save to 60 minutes:
Menu Menus System Adjust Power Save Time 60 min; Press OK to set and then press On
Line
4. Recommended Driver Settings to minimize printer adjustment cycles for Com-10 envelopes:
a) Media Weight: “Medium Heavy”
b) Media Type: “Plain” (Selecting “Envelope” as the media type runs that printer at a slower speed)
c) Media Size: “Com-10 Custom” (appears in the latest PostScript driver) or select Custom Size and
enter the dimensions for your envelope.
Select the “Custom” sizes (Com-10 Custom, A7 Custom,…) when using well behaved envelopes to
maximize throughput. Selecting non-Custom sizes will run the printer slightly slower and may be helpful
for some jobs.
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