Print medium and assembly

Claim 2

A printing apparatus employing a printing assembly comprising: a pair of spaced upright shafts, a structure supporting said shafts, one shaft being fixed relative to the structure while the other is laterally displaceable relative to said one shaft in a direction substantially perpendicular to the axes of the shafts; a wheel supported on said other shaft and being freely rotatable on said other shaft; means for effecting lateral displacement of said other shaft in a direction away from said one shaft to a predetermined position relative to said one shaft; a second wheel mounted on said one shaft for rotation therewith; and a continuous flexible band looped under tension around said wheels and carrying a multiplicity of indicia discretely arranged on the band whereby a discrete representation of the respective indicia can be transposed to a further medium, said band being resiliently extensible to increase the separation of the indicia; an upright striker arm for engaging said wheel when the latter is in said predetermined position to thereby displace said wheel a further small distance away from said one shaft; means for biasing the striker arm away from said wheel; and means for momentarily effecting said wheel displacing movement of the striker arm.

Claim 3

A printing assembly according to claim 1 further comprising means mounted on said structure for effecting stepwise rotation of said one shaft.

Claim 4

A printing assembly according to claim 2 wherein said structure comprises a carriage incrementally movable along guide means whereby said wheel may be brought to any one of a succession of printing positions.

Claim 5

A printing assembly according to claim 3 further comprising means for moving said other shaft axially between two spaced positions.

Claim 6

A printing assembly according to claim 2 wherein said wheel and striker arm are co-operable on engagement to accurately rotationally position the wheel relative to the striker arm.

Claim 7

A printing assembly according to claim 5 wherein the striker arm is pivotally supported on said structure so as to be movable.

Claim 8

A printing apparatus employing a printing assembly comprising: a pair of spaced upright shafts, a structure supporting said shafts, one shaft being fixed relative to the structure while the other is laterally displaceable relative to said one shaft in a direction substantially perpendicular to the axes of the shafts; a first wheel supported on said other shaft and being freely rotatable on said other shaft; means for effecting lateral displacement of said other shaft in a direction away from said one shaft to a predetermined position relative to said one shaft; an upright striker arm for engaging said wheel when the latter is in said predetermined position to thereby displace said wheel a further small distance away from said one shaft; means for biasing the striker arm away from said wheel; means for momentarily effecting said wheel displacing movement of the striker arm; a second wheel mounted on said one shaft for rotation therewith; and a continuous flexible band looped under tension around said wheels and carrying a multiplicity of indicia discretely arranged on the band whereby a discrete representation of the respective indicia can be transposed to a further medium, said band being resiliently extensible to increase the separation of the indicia.

Claim 9

A printing apparatus employing a printing assembly comprising: a pair of spaced upright shafts, a structure supporting said shafts, one shaft being fixed relative to the structure while the other is laterally displaceable relative to said one shaft in a direction substantially perpendicular to the axes of the shafts; a first wheel supported on said other shaft and being freely rotatable on said other shaft; means for effecting lateral displacement of said other shaft in a direction away from said one shaft to a predetermined position relative to said one shaft; an upright striker arm for engaging said wheel when the latter is in said predetermined position to thereby displace said wheel a further small distance away from said one shaft; means for biasing the striker arm away from said wheel; means for momentarily effecting said wheel displacing movement of the striker arm; a second wheel mounted on said one shaft for rotation therewith; and a continuous flexible band looped under tension around said wheels and carrying a multiplicity of indicia discretely arranged on the band whereby a discrete representation of the respective indicia can be transposed to a further medium, said band being resiliently extensible to increase the separation of the indicia.

Claim 10

A printing assembly according to claim 7 further comprising means mounted on said structure for effecting stepwise rotation of said one shaft.

Claim 11

A printing assembly according to claim 8 wherein said structure comprises a carriage incrementally movable along guide means whereby said wheel may be brought to any one of a succession of printing positions.

Claim 12

A printing assembly according to claim 8 wherein said wheel and striker arm are co-operable on engagement to accurately rotationally position the wheel relative to the striker arm.

Claim 13

A printing assembly according to claim 8 further comprising means for moving said other shaft axially between two spaced positions, the second wheel being rockably mounted on said one shaft to accommodate the consequent alteration in the alignment of the belt.