7 Parts for printing machines, namely, material feeders, ink dispensers, industrial printing rollers, printing blankets, and squeegees for relief printing, surface printing and intaglio printing, and printing forms; printing machines, namely, roll and sheet printing presses for relief printing, surface printing and intaglio printing, and printing forms; machines for feeding printing materials to printing presses as parts of printing presses, namely, sheet feeders, stream feeders, roll feeders, conveyer feeders, sheet grippers, and sheet detectors; machines for receiving printed materials output from printing presses as parts of printing presses, namely, heaters, dryers, perforators, folders, staplers, binders, glue stations, collators, scorers, and printed sheet stackers; machines as parts of printing presses for post-press handling of printed materials, namely, cutting machines, laquering machines, folding machines, perforating machines, stapling machines, collating machines, envelope stuffing machines, printed matter stacking machines, sheet conveyers, addressing machines, and printed matter packing machines