Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
A serial dot printer for printing dots in a series of printing positions on a printing support along a printing line, comprising a carriage movable relative to said printing support and having a rectilinear guide perpendicular to the direction of carriage movement, at least one printing head selectively actuatable and mounted on said carriage, a driving member rotatable about a shaft perpendicular to said direction and to said guide for moving said carriage, said driving member including an eccentric element fixed thereon and engaged with said guide for moving said carriage with simple harmonic motion along the entire length of said printing line.
Claim 2
Dependent Claim
103 words
A serial dot printer for printing dots in a series of printing positions on a printing support along a printing line, comprising a carriage movable relative to said printing support and having a rectilinear guide perpendicular to the direction of carriage movement, at least one printing head selectively actuatable and mounted on said carriage, a driving member rotatable about a shaft perpendicular to said direction and to said guide for moving said carriage, said driving member including an eccentric element fixed thereon and engaged with said guide for moving said carriage with simple harmonic motion along the entire length of said printing line.
Claim 3
Dependent Claim
68 words
A printer as claimed in claim 1, wherein said driving member comprises a disc having on one face said eccentric element and having on the other face a cam element (71) arranged to move a counterweight (90) parallel to the movement of the carriage but in the opposite direction, so as to counteract the inertial forces of the mass of the carriage during the reversal of its movement.
Claim 4
Dependent Claim
41 words
A printer as claimed in claim 2, in which the printing support is a strip of paper, characterized in that the printing head is of the single printing element type, and moves along the entire length of the line of print.
Claim 5
Dependent Claim
96 words
A printer as claimed in claim 1, in which the printing head can be selectively operated by an operating circuit to print in a series of printing positions equidistant on said printing support under the control of means effecting synchronisation with the carriage movement, and wherein said synchronisation means comprise a disc rotatable at constant speed, rigidly connected to said driving element and provided with slots (258) spaced apart by a pitch which varies according to the variable speed of the carriage and a fixed optical transducer cooperating with said slots to generate a synchronisation signal.
Claim 6
Dependent Claim
43 words
A printer as in claim 1, wherein said printing head is a single ink jet head having a tubular container of insulted material for a rod of a conductive solid ink element the axis of said container being parallel to said rectilinear guide.
Claim 7
Dependent Claim
57 words
A printer as claimed in claim 1, wherein said support is carried by a cylindrical platen and said driving element carries a peripheral thread having a variable pitch to intermittently rotate a driven wheel connected with said platen, said platen advancing said support in direction perpendicular to said printing line during the return stroke of said carriage.
Claim 8
Dependent Claim
32 words
A printer as claimed in claim 6 comprising an one-way clutch for connecting said driven wheel and said platen, whereby the platen can be rocked by hand irrespective from said driven wheel.
Claim 9
Dependent Claim
66 words
A printer as claimed in claim 2, wherein said cam element is a circular cam recessed on the opposite face of said driving element cooperating with said counterweight and eccentrically arranged relative to said shaft in an angular position diameticrally opposite with respect to said eccentric element, whereby said counterweight counteracts the inertial forces of the mass of said carriage at the ends of its strokes.