Abstract: The present invention is characterized by an apparatus for carrying extra-thin printed boards, etc., wherein a plurality of rotation axles are oriented in a direction perpendicular to a carrier direction in which the printed boards are to be carried, a plurality of disks are fixed to each of the rotation axles at suitable intervals, each disk having opposed side faces having rims, the disks on adjacent axles in a carrier direction partially overlapping one another in the direction in which the printed boards are to be carried and being free from interference with each other. A plurality of supporting shafts are provided at the rims of right and left side faces of each disk, the supporting shafts on disks on axles which are adjacent to one another overlap one another by a fixed length but not interfering with one another.

Abstract: A method of blasting IC frames as electronic components with a suitable apparatus, which prevents the frames from being caught by position restriction means during transfer, and eleiminates necessity for particular operations even if frames of different widths are continuously fed.The blasting is carried out by turning a conveyor belt (8), which has support plate members (11) juxtaposed thereon and has a support groove (D) of an inverted triangular sectional shape formed thereon, jetting slurry onto the IC frames (F) merely placed on the slope surfaces inside the support support groove from a nozzles (2), turning then the frames by a reversion device (3) so as to place them on other slope surfaces, and jetting the slurry from other nozzles.