A month ago I was printing on sheets of Arches Infinity paper that I had cut down to 11x47. I got the bright idea to feed them through the slot used for roll paper telling the printer that it was a sheet. Problem was that they printed skewed... meaning I think the pressure on the paper is lighter because a roll must be allowed to slip/adjust to keep it straight.
In addition I got a message a couple of times saying the "paper is too big". I bet 48" is the limit for sheets.
Thanks for the opportunity to share . Alan
90% of the time I feed the sheets through the roll slot. Usually aligning the sheet against the roll core holder at the right. There's no difference in pressure on the transport rolls between rolls and sheets in my opinion. The misalignment is just because the HP is quite critical on what is straight and what not and it measures that in different ways between sheets and rolls. If there's a difference between the pressure it is the result of printer menu choices you have to make between roll and sheet but I doubt it makes a difference. In the new firmware you can go for the deckled edge paper routine which is less critical. HP can not allow slip on roll transport, in the first place unrolling different roll sizes and paper roll types will give a length difference and by that banding and inaccurate lengths. The same more or less for larger and heavier sheets versus smaller and thinner paper and versus rolls. No slip is preferred in all cases. Could well be the reason why the Fiber papers get the roll's embossment.
While the roll slot gives a theoretical straight path there's one point where there should be a mild bend in the sheet when the paper lever is lowered. The transport rolls are located slightly over the 90 degrees top on the transport axle (4 mm estimated) to bend the media downwards where the head passes. The plastic + felt bottom under the head path allow the curve of what a thin sheet will adapt to with that pressure on it, thicker papers and metal will not bend that much. That's a good method to straighten the media over the length of the head pass as well if there are lengthwise (transport direction) waves in the media like canvas can have.
Good to know where the paper width is considered too much. Thank you.
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