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Method of Printing Double Zone Characters

IP.com Disclosure Number: IPCOM000096126D
Original Publication Date: 1964-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 3 page(s) / 70K

Publishing Venue

IBM

Related People

Fitch, EL: AUTHOR

Abstract

In the proposed American Standard Code for Information Interchange (ASCII), there is one character @, identified by a 12, 0 hole combination, which is not within the normal range of movement of the printing code plate of the IBM 026 Printing Card Punch. The 026 plate is positionable from +4 to -3 increments of movement either vertically or horizontally or both from a normal position to select any one of sixty-three characters for printing. The code plate is moved when one, or more than one, punch slide is driven to punch holes in a card column and for ACSII will be moved either horizontally or vertically by the punches as follows: Punch Horiz. Vert. Punch Horiz. Vert.

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Method of Printing Double Zone Characters

In the proposed American Standard Code for Information Interchange (ASCII), there is one character @, identified by a 12, 0 hole combination, which is not within the normal range of movement of the printing code plate of the IBM 026 Printing Card Punch. The 026 plate is positionable from +4 to -3 increments of movement either vertically or horizontally or both from a normal position to select any one of sixty-three characters for printing. The code plate is moved when one, or more than one, punch slide is driven to punch holes in a card column and for ACSII will be moved either horizontally or vertically by the punches as follows: Punch Horiz. Vert. Punch Horiz. Vert. 12 -3 4 -2 11 -2 5 3 0 -1 6 4

1 1 7 -3

2 2 8 4

3 -1 9 1 4. Permissible hole combinations in ASCII are 0 through 9 singly or any one of 0 through 7 with one of 12, 11, or 0 or any of these combinations with an 8 hole also punched, an 8 and a 1 hole combination being punched as a
9. Of these permissible hole combinations all would be within the limits of movement of the 026 printing plate except the 12, 0 combination. This would require a -4 code plate movement to print @. This -4 shift would be out of the permissible range of movement of the printing plate.

To allow this 12, 0 hole combination to be used in the 026 Punch, the vertical shift mechanism for the printing code plate is modified as shown. In the 026 Punch, each card punching slide 15 is held down by an arm 16 pivoted on shaft
17. A slide 15 is moved upward when a hole is to be punched. Each slide 15, when moved upward, carries with it an interposer block 18 having an interposer 19 horizontally slidable in it between pins 20 in a horizontal channel. Interposers 19 are shaped to move code plate slide 2...