Abstract: An improved paper feed roller assembly for the paper feed mechanism of a printer is provided with an adjustable arrangement so that a plurality of different widths of perforated edge paper may be accommodated thereby. The arrangement includes a rotatable member having a plurality of indentations which cooperate with stops to select an axial position for the feed pins mounted on the roller, corresponding to the selected indentation.

Abstract: A paper supply roll holder having an axle insertable through the core of a paper supply roll for rotatably supporting the paper supply roll upon a supporting bracket. The rearward portion of the supporting bracket rests upon a suitable support surface while the forward ends of a pair of resilient arms are inserted into openings upon a printer housing for releasable locking therebetween and to positively locate the paper supply holder relative to the printer. The paper extends from the supply roll over a resiliently-mounted dancer bar and into the printer where it is guided therethrough by web feeding means of the incremental-feed type. The spring elements resiliently supporting the dancer bar are adapted to yield upon incremental advancement of the web feeding means, to thereafter rotate the supply roll through a small angle as the web feeding means pauses during the printing of a line to assure that the web is fed in an orderly fashion.