Patent · US Expired

Apparatus and method for selective rotation of data printed by a matrix printer

US5012434A · kind A · utility

21Cited by

15References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Kurt Zietlow · Grafing, DE
Ernst Engst · Munich, DE

Key dates

Filing date	Jul 12, 1989
Grant date	Apr 30, 1991
Priority date	—
Expiry date	Jul 12, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S347/90
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An electro-photographic matrix printer such as a laser printer has characters to be printed stored as bits in columns and rows of a bit pattern page memory. The bits are read from the bit pattern page memory in the form of individually addressable blocks of bits, the order of the blocks read from said bit pattern page memory being selected to give a selected degree of rotation to the printed image produced by said printer, with the order of bits within each block being presented to the printer to provide a rotated image within each individually addressable block.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.