Coating processes – Frictional application
Patent
1988-09-06
1990-01-02
Lawrence, Evan
Coating processes
Frictional application
118 46, 118 76, 118669, 427265, 400105, B05D 508, B05C 900, B05C 1100
Patent
active
048912409
ABSTRACT:
This magnetic ink character recognition (MICR) character coating system makes use of the application of an inexpensive lubricant that is selectively applied to the document, solely in the area where the MICR characters are printed. The lubricant of choice used in this apparatus is sodium stearate (soap). The lubricating apparatus includes a pair of rollers, between which the printed documents are fed. One of the rollers is a drive roller that advances the documents. Opposite of and spring loaded against the drive roller is a free running lubricating roller that is manufactured from a solid lubricant, which lubricating roller is of length equal to the length of the MICR character field that is printed on the document. In the printing of the document, a sensor mark is printed on the document and is used to indicate the beginning of the MICR character field. A sensor circuit detects the presence of the sensor mark and activates a solenoid to stop the lubricating roller from rotating as the document is fed past the lubricating roller. This causes the documents to be dragged across the lubricating roller, thereby applying a thin film of lubricant from the lubricating roller solely to the area of the document that contains the printed MICR characters. Thus, this MICR character printing apparatus both applies a lubricant only to the MICR character field on the printed surface of the document without coating the entire document and uses an inexpensive lubricant to extend the useful life of the printed MICR characters.
REFERENCES:
patent: 4379302 (1983-04-01), Dol et al.
patent: 4390562 (1983-06-01), Yanagisawa
patent: 4581283 (1986-04-01), Tokunaga et al.
patent: 4615293 (1986-10-01), Jahn
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patent: 4779558 (1988-10-01), Gabel et al.
Troy 308A Financial Document Printer Maintenance Manual; Publication 50-70047-001 REV A Mar. 1987; pp. 1-10, 3-6, 3-7, 3-21, 4-2, 4-12, 6-32, 6-33 and 44 through 46.
TROY 308 Financial Document Printer Brochure, 1987.
Kleinschnitz Donald J.
Reidenauer Ronald R.
Ward Leonard G.
Lawrence Evan
Storage Technology Corporation
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