Browse Prior Art Database

Print Rotation Technique

IP.com Disclosure Number: IPCOM000049311D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Green, DC: AUTHOR [+2]

Abstract

Data to be printed is transmitted in normal fashion to a print buffer. When an entire page of print data has been stored line by line, in the buffer, the data is then taken from the buffer by rotation; i.e., the characters are then read by columns from the buffer and sent to the printer mechanism to be printed. This method eliminates the need for more than one buffer.

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Print Rotation Technique

Data to be printed is transmitted in normal fashion to a print buffer. When an entire page of print data has been stored line by line, in the buffer, the data is then taken from the buffer by rotation; i.e., the characters are then read by columns from the buffer and sent to the printer mechanism to be printed. This method eliminates the need for more than one buffer.

In this method, the first page of data is entered into the buffer horizontally, each successive line below the previous one. When the buffer is full, data is taken out by the printer controls by vertical column and printed in rotated fashion. After a given number of columns have been printed, the system can begin to transmit the second page to the printer while printing continues. This time, however, the data is stored in the memory buffer vertically in the columns that were just pulled for printing and are now vacant. Thus, the system can send a new line which will fill a column as the printer control vacates the columns by printing the horizontally entered data of the first page. When the second page of data has been stored vertically by column in the single buffer, the printer can begin taking data horizontally for printing the second page in rotated fashion. Again. after a predetermined number of rows have been printed, the data processing system can begin transmitting lines for the third page which will be entered into the memory buffer horizontally. As in the case of t...