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Front and Back Printing

IP.com Disclosure Number: IPCOM000096290D
Original Publication Date: 1963-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Burke, WH: AUTHOR [+2]

Abstract

The bill feed apparatus is for printing one line on a record card during each pass of the card through it until one side of the card is full. It then automatically turns the card for printing line by line on the reverse side.

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Front and Back Printing

The bill feed apparatus is for printing one line on a record card during each pass of the card through it until one side of the card is full. It then automatically turns the card for printing line by line on the reverse side.

To effectuate this, cards are fed from hopper 1 (A) onto a predetermined location on movable bed 2. Punched holes in the card are read at sensing station 3. Carriage tape 4 is linked to and moves with bed 2 And carries holes which are sensed by device 5 to indicate the position of the card. Sensed card holes and carriage tape holes are analyzed in card feed control 6, generally as shown in U. S. Patent No. 2,672,287, to stop the card at printing station 7 for printing on the next available line.

After printing is effected, the card is moved to punch station 8. Under the control of the sensing station, a hole is punched to indicate the next available line. Column 1, the left-hand column in B, is first filled, then column 2. Holes are punched from the trailing edge first so that a hole is sensed immediately when a column is full.

The twenty-fifth line is started the same way in column 3, but the card is reversed immediately after the punching operation. The next time the card appears, the single hole in column 3 is in the leading position as shown in C. The operation is then repeated for twenty-four lines in the manner described above with columns 4 and 5 being punched. After the fiftieth line is printed, a hole is punc...