Communications: electrical – Digital comparator systems
Patent
1974-11-11
1977-02-08
Shaw, Gareth D.
Communications: electrical
Digital comparator systems
340324R, 178 30, 178 15, 197 20, G06F 312, G06F 732, G06F 1300
Patent
active
040074420
ABSTRACT:
Intermixing of line heights in a buffered printer is accomplished by storing a different byte in a forms control buffer for each line of coded character data in a page to be printed. As the coded data of each line is advanced for printing by an arrangement which modulates a laser beam during scanning across a printable medium to effect the printing, the byte within the forms control buffer corresponding to the line about to be printed causes selection of the number of scans of the laser beam to be used in printing the line, thereby determining the height of each line independently of the other lines in the page. Blank lines in the page are formed by channel commands to the printer which instruct an address register associated with the forms control buffer to be incremented to cause skipping to a particular channel number identified by one of the bytes in the forms control buffer or to cause spacing by a specified number of lines. Each time the address register is incremented a special coded character byte is inserted into the page being made up of the coded character data. Upon printing the occurrence of each special coded byte causes inhibiting of the printing arrangement, thereby forming a blank line.
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Anderson Teddy Lee
Findley Gerald Ivan
International Business Machines - Corporation
Rhoads Jan E.
Shaw Gareth D.
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