US3518406A - Thermal half-select printing matrix - Google Patents

Thermal half-select printing matrix Download PDF

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Publication number
US3518406A
US3518406A US3518406DA US3518406A US 3518406 A US3518406 A US 3518406A US 3518406D A US3518406D A US 3518406DA US 3518406 A US3518406 A US 3518406A
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Prior art keywords
printing
thermal
electrically resistive
matrix
conductor
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Expired - Lifetime
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John L Janning
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NCR Corp
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NCR Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335Structure of thermal heads
    • B41J2/33555Structure of thermal heads characterised by type
    • B41J2/3357Surface type resistors

Description

INVENTOR JOHN 1.. JANNING gfi 4 WM- W HIS ATTORNEYS June 30, 1970 J. JANNING THERMAL HALF-SELECT PRINTING MATRIX Original Filed June 9, 1967 FIG-.2

' 3,518,406 PatentedJune 30, 1970 United States Patent Otfice THERMAL HALF-SELECT PRINTING MATRIX John L. Janning, Dayton, Ohio, assignor to The National Cash Register Company, Dayton, Ohio, a corporation of Maryland Original application June 19,1967, Ser. No. 646,888, now Patent No. 3,466,423, dated Sept. 9, 1969. Divided and this application Nov. 8, 1968, Ser. No. 774,391

Int. Cl. Hd I/00; G01d 15/00 U.s'. Cl. 219-216 2 Claims ABSTRACT OF THE DISCLOSURE matrix points which have coincident electrical current flowing through crossing electrically resistive thermal printing conductors which define those points are disclosed. I v

CROSS-REFERENCE TO RELATED I p APPLICATION US. patent application Ser. No. 646,888, filed June 19, 1967, now Pat. No. 3,466,423, issued Sept. 9, 1969, in the name of John L. Janning, inventor, of which this is a division. i

BACKGROUND OF THE INVENTION "j Full-select thermal printing matrices employed in the prior art must have an isolation diode for each electrical selection conductor that is employed in order to prevent sneak currents and to isolate one'matrix element from another. The thermal half-select printing matrices of the present invention eliminate the necessity of supplying an isolation diode for each electrically resistive thermal printing conductor of a thermal printing matrix.

SUMMARY Thermal half-select printing is accomplished by coincident current energization of electrically resistive thermal printing elements.

BRIEF DESCRIPTION OF THE DRAWING DESCRIPTION OF THE PREFERRED EMBODIMENTS The thermal half-select printing matrices of the present invention are constructed for use with thermally sensitive record material. In the embodiment of FIG. 2, a thin electrically insulating substrate 10, which may be of any electrically insulating material, such as silicon dioxide, which is not subject to rapid heat diffusion from a heated point on the substrate, is employed. The thin electrically insulating substrate 10 should be on the order of one thousandth of an inch thick. The complete thermal printing member 11 is then mounted on a rigid support board 13.

Electrically resistive thermal printing conductors which are on the order of 16 thousandths to 70 thousandths of an inch wide and on the order of 4 millionths of an inch thick, and which are composed of an electrically resistive g and thefselection grounding'transistors 27 and 29, which are selectively saturated when supplied with positive voltage selection signals on their bases. For example, if an electrical current is passed through the column conducto'r 15coincidentally with an electrical current through the row conductor 16, the radiated energy at the matrix location 22 due to the current in each of the conductors 15 and 16 will add, and, consequently, p'rintin'g'will occur on the thermally sensitive paper 31 at this location if the thermal threshold of the thermally sensitive paper is exceeded. Energization of only one conductor will not'produce sufiicient energy at a matrixlocation to exceed the thermal threshold of the thermally sensitive paper 31. At other points of the matrix, such as the matrixpoints 24 and 26, where only the current through either a row conductor or a column conductor generates energy, the thermal printing threshold of the heat-sensitive paper is not exceeded, and, therefore, printing does not occur at these points.

The thermal printing paper 31 may be placed in proximity with the exposed side of the electrically insulating film substrate 10. The optimum operating characteristics are found to exist when the heat-sensitive paper 31 is positioned in its thermal printing position and the current through a column conductor is increased until printing occurs as the result of energy through the column conductor only. The current through the column conductor is then reduced by approximately 10%. The same procedure is then followed for determining the optimum operating point of a row conductor.

FIG. 1 shows another embodiment of the present invention, in which row conductors 30 are secured on one side of an electrically insulating substrate 28. The substrate 28 is then placed behind the non-thermally-sensitive side of the thermally-sensitive paper 32. Column conductors 36 of an electrically resistive material are secured on' one side of another electrically insulating substrate 34; The substrate 34 is positioned on the front, or heatsensitive, side of the thermally sensitive paper 32. As in the embodiment of FIG. 2, the row and column conductors may be interchanged if desired. The row conductors 30 and the column conductors 36 are selectively supplied separate and coincidental electrical currents by a current supply means, such as the current supply means 21 and 23 shown in FIG. 1. Just as in FIG. 1, if an electrical current is passed through a column conductor 36 coincidentally with a separate electrical current through a row conductor 30, the thermal energy radiation from those portions of the electrically resistive printing elements that intersect at a matrix location, like the matrix location 22 of FIG. 1, will be greater than the thermal energy radiation from those portions of the electrically resistive printing elements that intersect but are not supplied with separate and coincidental electrical currents. The foregoing greater thermal energy radiation will be of a magnitude sufiicient to exceed the thermal threshold of the thermally-sensitive record material 32, causing printing thereon in the same manner as in the FIG. 1 embodiment. In particular, printing will occur on the thermallysensitive record'rnaterial 32 in the vicinity of those thermal printing locations which are formed by an intersecting portion of a printing element 28 and an intersecting printing element 36 when both of the crossing printing elements 28 and 36 at a thermal printing location are supplied separate and coincidental electrical currents. The same procedure for obtaining the optimum operating characteristics which was described in conjunction with the embodiment of FIG. 2 may also be employed in connection with the embodiment of FIG. 1.

FIG. 3 shows an alternate electrically resistive conductor 17, which may replace the row conductors or'the column conductors of the embodiments of FIGS. 1 and 2. This conductor 17 consists of alternate areas 19 of .an electrically conductive material, such as copper or gold, which are deposited over an electrically resistive substrate material 18, such as tin oxide, etc. The deposited conductive material 19 reduces the resistance along portions of the conductor 17 in which no print is desired; therefore the total energy loss of the conductor 17 is reduced, and, in addition, printing is more accurately confined to the desired printing areas 25. External electrical connections are made to the conductive areas 37 and 39 by the conductive leads 41 and 43, respectively.

What is claimed is:

l. A thermal printing device for printing on a thermally-sensitive record material, comprising:

(a) a first set of electrically resistive printing elements,

(b) a second set of electrically resistive printing elements crossing the first set of printing elements, to form a matrix of thermal printing locations at those portions of the printing elements which interesect,

wherein the first set of electrically resistive printing elements is mounted on one side of a nonductive substrate, and the second set of electrically resistive printing elements is mounted on one side of a second nonconductive substrate and is positioned to face the first set of electrically resistive printing elements, the thermally-sensitive record material being placed intermediate the two substrates, and (c) means to selectively supply a first electrical current through printing elements of the first set of electrically resistive printing elements and a second separate and coincidental electrical current through printing elements of the second set of electrically resistive printing elements to cause thermal energy radiation from those portions of the electrically resistive printing elements that intersect and are supplied with said first and second electrical currents to be greater than thermal energy radiation from those portions of the electrically resistive printing elements that intersect but are not supplied with both of said first and second electrical currents,

said greater thermal energy radiation being of a magnitude exceeding the thermal threshold of the thermally-sensitive record material and effecting printing thereon, said printing being effected on the thermally-sensitive record material, which is positioned adjacent the matrix of thermal printing locations, in the vicinity of those thermal printing locations which are formed by an intersecting portion of a printing element of the first set and an intersecting portion of a printing element of the second set when both of the crossing printing elements at a thermal printing location are supplied said separate and coincidental currents.

2. A thermal printing device as in claim 1 wherein the electrically resistive printing elements of at least one of the sets of the printing elements each comprises an electrically conductive path of alternately arranged high-resistance portions and low-resistance portions, and the highresistance portions define the thermal printing locations of the matrix.

References Cited UNITED STATES PATENTS 1,983,862 12/1934 Maness et al. 2l9-544 2,610,102 9/1952 Gitzendanner et al.

2,686,222 8/1954 Walker et al. 346-166 X 2,869,965 1/1959 Willard 34674 3,043,988 7/ 1962 Hurvitz.

3,182,333 5/1965 Amada et al. 346-74 3,214,765 10/1965 Bond 34674 JOSEPH V. TRUHE, Primary Examiner P. W. GOWDEY, Assistant Examiner U.S. Cl. X.R.

US3518406D 1967-06-19 1968-11-08 Thermal half-select printing matrix Expired - Lifetime US3518406A (en)

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US64688867A true 1967-06-19 1967-06-19
US77439168A true 1968-11-08 1968-11-08

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632970A (en) * 1969-05-08 1972-01-04 Texas Instruments Inc Method and apparatus for protecting electronic printheads
US3632969A (en) * 1969-05-08 1972-01-04 Texas Instruments Inc Electronic printhead protection
JPS5051743A (en) * 1973-09-07 1975-05-08
JPS5062043A (en) * 1973-10-02 1975-05-27
US4105892A (en) * 1976-07-19 1978-08-08 Tokyo Shibaura Electric Co., Ltd. Thin resistor film type thermal head for printing on heat-sensitive paper
US4514736A (en) * 1982-01-13 1985-04-30 Fuji Xerox Co., Ltd. Thermal head
US20070134039A1 (en) * 2005-12-08 2007-06-14 Ncr Corporation Dual-sided thermal printing
US20070210572A1 (en) * 2006-03-07 2007-09-13 Ncr Corporation Dual-sided thermal security features
US20070212146A1 (en) * 2005-12-08 2007-09-13 Dale Lyons Two-sided thermal print switch
US20070211099A1 (en) * 2006-03-07 2007-09-13 Lyons Dale R Two-sided thermal print sensing
US20070213213A1 (en) * 2006-03-07 2007-09-13 Ncr Corporation UV and thermal guard
US20070211094A1 (en) * 2006-03-07 2007-09-13 Ncr Corporation Dual-sided thermal pharmacy script printing
US20070213214A1 (en) * 2006-03-07 2007-09-13 Roth Joseph D Two-sided thermal wrap around label
US20070211132A1 (en) * 2006-03-07 2007-09-13 Lyons Dale R Two-sided thermal print configurations
US20070244005A1 (en) * 2006-03-07 2007-10-18 Ncr Corporation Multisided thermal media combinations
WO2007076000A3 (en) * 2005-12-21 2008-05-02 John L Janning Two-sided thermal printing
US20080316534A1 (en) * 2007-06-20 2008-12-25 Mcgarry Colman Two-sided print data splitting
US20090015647A1 (en) * 2007-07-12 2009-01-15 Rawlings Timothy W Two-side thermal printer
US20090015649A1 (en) * 2007-07-12 2009-01-15 Keeton Mark E Selective direct thermal and thermal transfer printing
US20090060606A1 (en) * 2007-08-31 2009-03-05 Ncr Corporation Controlled fold document delivery
US20090163363A1 (en) * 2006-03-07 2009-06-25 Richard Moreland Dual-sided two-ply direct thermal image element
US7839425B2 (en) 2008-09-17 2010-11-23 Ncr Corporation Method of controlling thermal printing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983862A (en) * 1932-07-12 1934-12-11 Leslie G Maness Soil warming device and method of manufacturing same
US2610102A (en) * 1950-12-27 1952-09-09 Gen Electric Function recorder
US2686222A (en) * 1951-02-16 1954-08-10 Ferranti Ltd Electric signal translating and recording device
US2869965A (en) * 1954-12-30 1959-01-20 Ibm Electro-sensitive digital data plotter
US3043988A (en) * 1955-04-27 1962-07-10 Hurvitz Hyman Two-dimensional displays
US3182333A (en) * 1961-12-27 1965-05-04 Nippon Telegraph & Telephone Electrostatic high speed printer
US3214765A (en) * 1961-06-20 1965-10-26 Sperry Rand Corp Electronic plotter for multiple target tracking

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983862A (en) * 1932-07-12 1934-12-11 Leslie G Maness Soil warming device and method of manufacturing same
US2610102A (en) * 1950-12-27 1952-09-09 Gen Electric Function recorder
US2686222A (en) * 1951-02-16 1954-08-10 Ferranti Ltd Electric signal translating and recording device
US2869965A (en) * 1954-12-30 1959-01-20 Ibm Electro-sensitive digital data plotter
US3043988A (en) * 1955-04-27 1962-07-10 Hurvitz Hyman Two-dimensional displays
US3214765A (en) * 1961-06-20 1965-10-26 Sperry Rand Corp Electronic plotter for multiple target tracking
US3182333A (en) * 1961-12-27 1965-05-04 Nippon Telegraph & Telephone Electrostatic high speed printer

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632969A (en) * 1969-05-08 1972-01-04 Texas Instruments Inc Electronic printhead protection
US3632970A (en) * 1969-05-08 1972-01-04 Texas Instruments Inc Method and apparatus for protecting electronic printheads
JPS5051743A (en) * 1973-09-07 1975-05-08
JPS5062043A (en) * 1973-10-02 1975-05-27
US4105892A (en) * 1976-07-19 1978-08-08 Tokyo Shibaura Electric Co., Ltd. Thin resistor film type thermal head for printing on heat-sensitive paper
US4514736A (en) * 1982-01-13 1985-04-30 Fuji Xerox Co., Ltd. Thermal head
US20070134039A1 (en) * 2005-12-08 2007-06-14 Ncr Corporation Dual-sided thermal printing
US20090290923A9 (en) * 2005-12-08 2009-11-26 Dale Lyons Two-sided thermal print switch
US20070212146A1 (en) * 2005-12-08 2007-09-13 Dale Lyons Two-sided thermal print switch
US8721202B2 (en) 2005-12-08 2014-05-13 Ncr Corporation Two-sided thermal print switch
WO2007076000A3 (en) * 2005-12-21 2008-05-02 John L Janning Two-sided thermal printing
CN101309803B (en) * 2005-12-21 2014-05-28 Ncr公司 Two-sided thermal printing
US8067335B2 (en) 2006-03-07 2011-11-29 Ncr Corporation Multisided thermal media combinations
US20070211132A1 (en) * 2006-03-07 2007-09-13 Lyons Dale R Two-sided thermal print configurations
US20070244005A1 (en) * 2006-03-07 2007-10-18 Ncr Corporation Multisided thermal media combinations
US20070213214A1 (en) * 2006-03-07 2007-09-13 Roth Joseph D Two-sided thermal wrap around label
US9024986B2 (en) 2006-03-07 2015-05-05 Ncr Corporation Dual-sided thermal pharmacy script printing
US20070211094A1 (en) * 2006-03-07 2007-09-13 Ncr Corporation Dual-sided thermal pharmacy script printing
US20070213213A1 (en) * 2006-03-07 2007-09-13 Ncr Corporation UV and thermal guard
US8670009B2 (en) 2006-03-07 2014-03-11 Ncr Corporation Two-sided thermal print sensing
US20070211099A1 (en) * 2006-03-07 2007-09-13 Lyons Dale R Two-sided thermal print sensing
US20090185021A9 (en) * 2006-03-07 2009-07-23 Lyons Dale R Two-sided thermal print configurations
US20070210572A1 (en) * 2006-03-07 2007-09-13 Ncr Corporation Dual-sided thermal security features
US7710442B2 (en) 2006-03-07 2010-05-04 Ncr Corporation Two-sided thermal print configurations
US8367580B2 (en) 2006-03-07 2013-02-05 Ncr Corporation Dual-sided thermal security features
US8222184B2 (en) 2006-03-07 2012-07-17 Ncr Corporation UV and thermal guard
US8043993B2 (en) 2006-03-07 2011-10-25 Ncr Corporation Two-sided thermal wrap around label
US20090163363A1 (en) * 2006-03-07 2009-06-25 Richard Moreland Dual-sided two-ply direct thermal image element
US8252717B2 (en) 2006-03-07 2012-08-28 Ncr Corporation Dual-sided two-ply direct thermal image element
US20080316534A1 (en) * 2007-06-20 2008-12-25 Mcgarry Colman Two-sided print data splitting
US8576436B2 (en) 2007-06-20 2013-11-05 Ncr Corporation Two-sided print data splitting
US9056488B2 (en) 2007-07-12 2015-06-16 Ncr Corporation Two-side thermal printer
US9346285B2 (en) 2007-07-12 2016-05-24 Ncr Corporation Two-sided thermal printer
US8848010B2 (en) 2007-07-12 2014-09-30 Ncr Corporation Selective direct thermal and thermal transfer printing
US20090015647A1 (en) * 2007-07-12 2009-01-15 Rawlings Timothy W Two-side thermal printer
US20090015649A1 (en) * 2007-07-12 2009-01-15 Keeton Mark E Selective direct thermal and thermal transfer printing
US20090060606A1 (en) * 2007-08-31 2009-03-05 Ncr Corporation Controlled fold document delivery
US8182161B2 (en) 2007-08-31 2012-05-22 Ncr Corporation Controlled fold document delivery
US7839425B2 (en) 2008-09-17 2010-11-23 Ncr Corporation Method of controlling thermal printing
US8314821B2 (en) 2008-09-17 2012-11-20 Ncr Corporation Method of controlling thermal printing
US20110063394A1 (en) * 2008-09-17 2011-03-17 Morrison Randall L Method of controlling thermal printing

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