US 4,381,896 A · Print head mounting assembly with form adjustment

Abstract

An assembly for mounting a print head upon a carriage having an adjustable collar and a slotted support which receive opposing ends of an elongated shaft secured to the print head. The shaft is accurately positioned on the carriage by means of openings in said collar and said support which receive cooperating portions of said shaft. A spring biased cylindrical member retains the shaft within the carriage support and the collar. The collar is provided with a pair of projections which are engaged by the cam surface of a cam member rotatably mounted upon the shaft for adjusting the axial position of the print head relative to said collar and hence relative to a web supporting platen. The forms thickness setting assembly is accurately adjusted simply by axial adjustment of the collar, to assure the accuracy of all forms thickness settings through only a single adjustment step. A second pin secured to the print head is received within the slot of a second support on the carriage to assure precise angular orientation of the print head. The carriage is designed for use in a wide varieties of printers.

Claims8

Dependent claims

Apparatus for adjustably positioning a printing means on a carriage relative to a print receiving medium comprising:

a carriage;
cam means rotatably mounted on said printing means by means of a cam support member;
cam engaging means mounted on said carriage and having a projection extending toward said cam means;
said cam means having a cam surface provided with a plurality of grooves adapted to receive said projection, said grooves lying in imaginary planes which planes are spaced from one another;
a means on said carriage for slidably receiving a portion of said cam support member;
bias means normally urging said cam surface toward said projection and normally urging said cam support member toward said means for receiving said cam support member.

3 more elements

Dependencies are inferred from the claim text.

Print head mounting assembly with form adjustment

Life of this patent

Print head mounting assembly with form adjustment

Life of this patent

Abstract

Claims8