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US 3,960,256 AGranted
Adjustable carriage apparatus
AssigneeDigital Equipment Corporation
InventorsCharles Bickoff, St. John Merrill Hall, Jr.
Life of this patent
Estimating the term…
Abstract
Apparatus for a matrix printer by which the distance between the printhead and the paper being printed upon may be adjusted. The printhead is secured to a carriage whose position may be adjusted with respect to the paper by rotating a pair of bearings that are rotatably mounted in the carriage and centrally located around a stationary shaft.
Claims12
Apparatus for supporting a printing mechanism adjacent to the paper being printed upon, said apparatus comprising:
- A. movable carriage means supporting said printing mechanism, said carriage means having at least one first bore extending substantially parallel to said paper;
- B. at least one first bearing member rotatably located in said first bore, said first bearing member containing a second bore whose center-line is substantially parallel to and offset from said first bore's center line;
- C. a first shaft, fixed with respect to said paper, closely fitting within said second bore;
- and
- D. means for rotating said first bearing about said shaft, whereby said printing mechanism may be selectively positioned toward and away from said paper by rotation of said bearing.
2 more elements
Dependencies are inferred from the claim text.