The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1988
Filed:
Sep. 08, 1986
Hermann R Bublitz, Boblingen, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Method for controlling line printers comprising a revolving type band (400) and a print hammer bank for precalculating the firing times of the print hammers. The type band generally comprises equidistantly spaced scannable time marks (402) and a reference mark (501). The character spacing on the type band is subject to a coarse raster pitch .DELTA.T which is derived from the time mark pitch. The time mark positions are associated with coarse raster positions. The arrangement of the print hammers is subject to a coarse raster pitch .DELTA.T and a fine raster pitch .DELTA.T. Coarse and fine raster values are defined as time values. The hammers are sorted according to the fine raster values and their firing times are calculated by means of a special algorithm according to the order resulting from the sort step. The calculated values are entered in a first table (600) (comprising a field for each coarse raster value) and in a second table (700) (in which the fine raster values associated with the coarse raster value are entered). The printer control method permits