Stanley T Riddle

US Patent:

43396577, Jul 13, 1982

Filed:

Feb 6, 1980

Appl. No.:

6/118953

Inventors:

David D. Larson - Boulder CO
Stanley T. Riddle - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 762
G06F 702

US Classification:

235 92QC

Abstract:

Method and apparatus for improved error logging by integrating errors over a given number of operations that provides long memory and fast recovery. Errors integrated over a selected number of associated operations are compared to a criterion. An exception is logged each time the number of errors is not less than the criterion but if the number of errors is less than the criterion, the exception log is cleared.

US Patent:

44900325, Dec 25, 1984

Filed:

Jun 14, 1982

Appl. No.:

6/388570

Inventors:

Douglas J. Conly - Boulder CO
Bonnie B. Baker - Boulder CO
David D. Larson - Boulder CO
Stanley T. Riddle - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G03G 1504

US Classification:

355 14R

Abstract:

Modulation of the edge erase lamps in a copier/duplicator/printer to record visual data in the normally unused margins of a copy/duplicate/print. Numerical information can be recorded by a controlled switching sequence of the lamps normally used for edge erasing on electrophotostatic type copiers (or duplicators or printers). Turning off an edge erase lamp causes a dark streak near the margin on the copy in line with the lamp so switched off. By selectively turning off and on combinations of a plurality of edge erase lamps, visual data such as numerals can be written in the margins while copies (or duplicates or prints) are being produced.

US Patent:

43359523, Jun 22, 1982

Filed:

Sep 11, 1980

Appl. No.:

6/186093

Inventors:

Douglas J. Conly - Boulder CO
David D. Larson - Boulder CO
Stanley T. Riddle - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G03G 1500

US Classification:

355 14R

Abstract:

Copy sheets produced by varying copier machine subsystems for analyzing subsystems' performance. By varying parameters, sequencing the coronas, and inhibiting the various subsystems of a copy machine in certain orders, the resulting copy sheets can be analyzed for indications of the subsystems' efficiency. The order of operation reduces or eliminates the subsystems interacting effects so that the degradated operation of a particular subsystem can be perceived.