The rollers are spaced wrong for a #10 envelope and do not have enough contact area on the edges of the envelope. One side grabs more than the other and hence the crooked print, not a software chanical problem in the inherent design and spacing of the rollers. In other words the outside rollers pulling the envelope through the printer do not have enough contact area. The first and last rollers have the ability to only contact the envelope about 1/32 to 1/16 of an inch and therefore if slightly miss aligned more tension is put on one outside roller or the other and the envelope becomes misaligned and the text is printed skewed on the envelope. Six rollers near the print head have the possibility to pull the #10 envelope through the print head area. I believe that wider envelopes do not have this problem because they have more roller area contacting the envelope surface which prevents it from startig to skew. It is evident to me that as the envelope goes through the printer the rollers put more tension on this flap compared to the opposite side. When envelopes were placed in the tray to print the edge is uncreased. When the envelope is inspected after printing that edge is creased. Oddley enough this is the side that the open flap is on the envelope. When ejected to the output tray it clearly lands skewed to the left when facing the unit. When the envelope comes out of the printer it is already skewed. It is only the narrower #10 envelopes that come out crooked. I have printed other wider envelopes on this same unit and they come out perfect. I have never had a problem with regular 8.5 x 11 inch paper.
The unit indicates it is aligned correctly. Here are the reasons that I believe this is a mechanical failure with the printer and not a software problem. I have read many comments and solutions (tried them all) about this issue with the HP 8600 injet printing addresses crooked on #10 letters and I believe that this is an inherent mecanical problem with the printer.
DesignJet, Large Format Printers & Digital Press.Printing Errors or Lights & Stuck Print Jobs.Notebook Hardware and Upgrade Questions.
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