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Self-actuating Document Gate Mechanism

IP.com Disclosure Number: IPCOM000061150D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 13K

Publishing Venue

IBM

Related People

Blue, KA: AUTHOR [+2]

Abstract

At a franking or imprinting station in a point-of-sale terminal printer, either a continuous web of receipt paper or separately-inserted individual sheets of documents, such as checks or charge slips, may be entered for printing. The mechanism shown in the figure illustrates, in an end elevation view, the main components of such a printing station. A stop gate is required to block the entry of documents being inserted by hand when the mechanism is engaged to feed the continuous web form receipt paper. This design automatically retracts the gate when the mechanism is in the proper position for feeding an individual document, not the receipt paper.

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Self-actuating Document Gate Mechanism

At a franking or imprinting station in a point-of-sale terminal printer, either a continuous web of receipt paper or separately-inserted individual sheets of documents, such as checks or charge slips, may be entered for printing. The mechanism shown in the figure illustrates, in an end elevation view, the main components of such a printing station. A stop gate is required to block the entry of documents being inserted by hand when the mechanism is engaged to feed the continuous web form receipt paper. This design automatically retracts the gate when the mechanism is in the proper position for feeding an individual document, not the receipt paper.

In the figure, receipt paper 1 from a supply (not shown) follows the path, as described, past the printing station 18 where a print head (not shown) can impact the paper with the ribbon and drive it against a platen 19. Individual cut form documents 2, such as checks or sales charge slips are inserted along a guideway until the end of the document 2 impinges against document stop gate
3. The stop gate 3 is mounted in a resilient spring 4 attached rigidly to the base 10 of the machine. A back-up roller 5 journalled in a bearing 6 on a shaft 9 is shown. The shaft 9 is supported in a yoke 7 pivoted on a pivot 8 so that the entire roller 5 and shaft 9 assembly can be displaced slightly by pressure on roller 5, which will transmit a force to bend spring 4. This action will retract the gate stop mechanism 3 and allow document 2 to be fed between the feed roller 14 and the back-up roller 5.

In operation, a bidirectional drive gear 13, attached to a motor shaft 12, applies gear force to the shaft 17 to turn roller 14. Roller 14 and gear 13 are journalled together by shafts 12 and 17 in a yoke 11 that forms a toggling mechanism free to pivot a small distance in the direction of rotation of the dri...