Raymond F Melissa

US Patent:

42890691, Sep 15, 1981

Filed:

Apr 18, 1979

Appl. No.:

6/031076

Inventors:

Raymond F. Melissa - Costa Mesa CA
Lorne H. Grummett - Costa Mesa CA
Joseph J. Fischer - Santa Ana CA

Assignee:

Trilog, Inc. - Irvine CA

International Classification:

B41J 770

US Classification:

101 9301

Abstract:

A printer/plotter system for producing a multiple color hard copy output in response to digital input data. The system includes one or more impact hammers, each capable of printing a single dot with the hammers being arranged to selectively print dots along a defined print line. The system further includes an ink ribbon having multiple zones of different colors carrying encoded identifying indicia. In response to input data defining a dot pattern and the color in which it is to be printed, the ribbon is searched to position the first identified ribbon color zone in front of the impact hammers. After the pattern for that color is printed, the ribbon is again searched and the next identified color zone is moved into the print station, i. e. in front of the impact hammers, and the pattern associated therewith is printed. A paper control system is provided to move the paper to be printed upon in a forward direction as information is printed in each color.

US Patent:

42368359, Dec 2, 1980

Filed:

Dec 18, 1978

Appl. No.:

5/970622

Inventors:

David W. Mayne - San Juan Capistrano CA
Raymond F. Melissa - Costa Mesa CA

Assignee:

Printronix, Inc. - Irvine CA

International Classification:

B41J 312

US Classification:

400121

Abstract:

A dot matrix printer having a reciprocating hammer bank prints characters in either a standard or a compressed size using one of two different sets of modulation bits stored in a character generator for each character. A control code byte preceding each line of characters to be printed selects the sets of modulation bits in the character generator to be used and in addition selects the repetitive counts to be made by two different decoders in response to timing pulses designating the different dot column positions during each sweep of the hammer bank to control the application of the modulation bits from the character generator to actuating mechanisms for the hammers within the hammer bank. The compressed characters are the same height as but of reduced width compared to the standard characters, with the result that each hammer in the hammer bank prints a greater number of compressed characters than standard characters while bidirectionally reciprocating through a fixed distance relative to a paper or other printable medium.

US Patent:

43367518, Jun 29, 1982

Filed:

Mar 6, 1981

Appl. No.:

6/241448

Inventors:

Raymond F. Melissa - Costa Mesa CA
Lorne H. Grummett - Costa Mesa CA
Joseph J. Fischer - Santa Ana CA

Assignee:

Trilog, Inc. - Irvine CA

International Classification:

B41J 770

US Classification:

101 9304

Abstract:

A printer/plotter system for producing a multiple color hard copy output in response to digital input data. The system includes one or more impact hammers, each capable of printing a single dot with the hammers being arranged to selectively print dots along a defined print line. The system further includes an ink ribbon having multiple zones of different colors carrying encoded identifying indicia. In response to input data defining a dot pattern and the color in which it is to be printed, the ribbon is searched to position the first identified ribbon color zone in front of the impact hammers. After the pattern for that color is printed, the ribbon is again searched and the next identified color zone is moved into print station, i. e. in front of the impact hammers, and the pattern associated therewith is printed. A paper control system is provided to move the paper to be printed upon in a forward direction as information is printed in each color.

US Patent:

44013906, Aug 30, 1983

Filed:

Oct 27, 1980

Appl. No.:

6/201135

Inventors:

Raymond F. Melissa - Costa Mesa CA
Lorne H. Grummett - Costa Mesa CA
Joseph J. Fischer - Santa Ana CA

Assignee:

Trilog, Inc. - Irvine CA

International Classification:

B41J 3302

US Classification:

4002403

Abstract:

A printer/plotter system for producing a multiple color hard copy output in response to digital input data. The system includes one or more impact hammers, each capable of printing a single dot with the hammers being arranged to selectively print dots along a defined print line. The system further includes an ink ribbon having multiple zones of different colors carrying encoded identifying indicia. In response to input data defining a dot pattern and the color in which it is to be printed, the ribbon is searched to position the first identified ribbon color zone in front of the impact hammers. After the pattern for that color is printed, the ribbon is again searched and the next identified color zone is moved into print station, i. e. in front of the impact hammers, and the pattern associated therewith is printed. A paper control system is provided to move the paper to be printed upon in a forward direction as information is printed in each color.

US Patent:

45136610, Apr 30, 1985

Filed:

Apr 4, 1983

Appl. No.:

6/482133

Inventors:

Raymond F. Melissa - Santa Ana CA
Lorne H. Grummett - Costa Mesa CA
John C. Chamberlain - Irvine CA

Assignee:

Trilog, Inc. - Irvine CA

International Classification:

B41J 312

US Classification:

101 9304

Abstract:

A dot matrix line printer/plotter apparatus for producing hard copy printout of digitally represented data. The apparatus utilizes one or more hammer banks, each mounted so as to shuttle across a paper web fed therepast. Each hammer bank carries a plurality of hammer assemblies, each of which can be individually actuated to print a dot as it sweeps across the paper. Each hammer bank is mounted on a circuit board which carries electronic circuitry to actuate the hammer assemblies thereon. The circuit boards are supported by leaf springs and driven by a stepper motor which shuttles the boards along linear paths to sweep each hammer assembly across a certain portion of the paper width. Each hammer assembly includes a hammer supported in a guide tube for linear movement between a retracted position and an extended position engaging the paper. A permanent magnet is provided to normally latch the hammer in its retracted position.