Patent
Bidirectional dual head printer
Howard Duley
- 12 Nov 1973
23
TL;DR: In this article, a high-speed impact printer of the dot-matrix type employing at least first and second print head assemblies for printing characters or other symbols in line-by-line fashion upon a paper document is presented.
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Abstract: A high-speed impact printer of the dot-matrix type employing at least first and second print head assemblies for printing characters or other symbols in line-by-line fashion upon a paper document. In the dual head embodiment each print head assembly prints substantially one-half of the line of characters or symbols and both heads operate simultaneously during the print mode. The print mode is such that printing of every other line occurs as the print heads move from left to right and printing of the interspersed lines occurs as the print heads move from right to left after having completed the previous line of characters or other symbols. Novel electronics are provided to accomplish the above printing modes. The multiple head printer may also be employed in a graphics mode. It is further possible to employ more than two heads, for example, three or more, in either the printing or graphic modes, if desired. The printer has the further capability of ''''half-step'''' printing.
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Citations
Patent
Recording apparatus in which a plurality of carriages can be connected and separated
Hirofumi Hirano,Shinichi Omo,Hiroshi Fukui +2 more
- 02 Mar 1989
TL;DR: In this article, a recording apparatus has a first carrier carrying a first recording head (11) thereon and movable, a second carrier (19) carrying a second recording head thereon, and a third carrier (20) having a second head movable.
51
Patent
Method and apparatus for setting and varying margins and line spacing on data printers
William Wegryn,Juan F. Velazquez +1 more
- 25 Jul 1979
TL;DR: In this article, the authors describe a method and apparatus for setting and varying margins, line spacing and printing direction of a data printing machine by using a keyboard with push-button control which is coupled to a digital controller to input information about the actual and desired location of a print head relative to a printing surface.
32
Patent
Ink jet system with serial data printheads
Jimmy L. Droit,Ronald J. Johnsen,Mark V. Reinders,Mark K. Virkus +3 more
- 09 Feb 1995
TL;DR: An ink jet printhead system having a plurality of ink jets (102, 314A, 314B) for use with a system for ink jet printing of messages in ink (140) is described in this paper.
28
Patent
Printer synchronization control for shuttle having non-uniform velocity
Craig San Pietro
- 22 Dec 1976
TL;DR: In this article, a printer synchronization control for maintaining columnar alignment of dots printed by a dot matrix printer including a shuttle is presented, where the relative velocity between the paper and shuttle is non-uniform.
25
Patent
Printer having variable character density
Clifford M Jones,Surber W A +1 more
- 01 Nov 1977
TL;DR: In this paper, an improved matrix printer is described employing a high order, single track incremental position encoder to provide a plurality of electrical reference signals representative of predetermined print positions along a platen and for locating matrix columns at the specified print positions.
24
References
Patent
Ink jet printer
Demer F
- 22 Jan 1974
TL;DR: An ink jet printing system which writes on a record medium by expelling droplets of liquid ink from the cavity of a jet head which is reciprocated repetitively along the printing line is described in this article.
41
Patent
Carriage drive for high speed printer
Walter J Zenner,Raymond E Kranz +1 more
- 10 Sep 1970
TL;DR: In this article, a carriage drive for a high speed dot matrix printer, including a reversible stepping motor connected through a clutch to a rotary driven member that is in turn connected by a belt to the printer carriage, is described.
32
Patent
Electronic printing input-output station
Boren D,Brennan J,Pope H +2 more
- 31 Dec 1968
TL;DR: In this article, an input-output station for a remote time shared computer is described which has a high speed electronic printer output and a keyboard encoder input and the output from the keyboard is temporarily stored in a one character buffer which serves as the input to the electronic printer and to an accumulator register comprised of parallel MOS shift registers where an entire line of characters are stored as they are printed.
30
Patent
Wire printing method
Edward D. Finnegan
- 25 Apr 1969
TL;DR: In this article, a printing method for use with a wire printer designed for improved printing of both higher and lower case alphabetical characters wherein additional printing points and positions are added to write better-formed characters, and especially to print improved characters having diagonally extending and curved segments.
26
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