Serial printer
AssigneeAlps Electric Co., Ltd.
InventorsMasatsugu Aoki, Yasuhiko Iwane
Life of this patent
Estimating the term…
Abstract
A printer for printing function symbols and numerals, characterized by comprising a type wheel for printing numerals which can rotate with a rotary shaft and which can move in the axial direction of the rotary shaft, a type wheel for printing function symbols which can rotate with the rotary shaft and which can move in the axial direction of the rotary shaft, and a print hammer whose printing face is provided with a groove and which is arranged in opposition to the type wheels, so that when either one of the type wheels lies in a printing position, the other type wheel is confronted to the groove of the printing face.
Claims10
A serial printer comprising first and second type wheels mounted on a rotary shaft for axial movement into a printing position along a printing line and carrying a plurality of respective type elements positioned at said printing line by rotation of said shaft, a single hammer lying along said entire printing line and having a recess formed opposite a non-printing position on said printing line, means for placing said second type wheel in said non-printing position so as to be opposite said recess whenever type elements from said first type wheel are selected for printing and placing said first type wheel in said non-printing position so as to be opposite said recess whenever type elements from said second type wheel are selected for printing, means for moving said hammer towards said type wheels for printing a character corresponding to the selected type element, and a mask member held in position between said recess and said non-printing position.
Dependencies are inferred from the claim text.