US3771443A - Document monitor by light transmittance for enabling printer - Google Patents

Document monitor by light transmittance for enabling printer Download PDF

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Publication number
US3771443A
US3771443A US00298763A US3771443DA US3771443A US 3771443 A US3771443 A US 3771443A US 00298763 A US00298763 A US 00298763A US 3771443D A US3771443D A US 3771443DA US 3771443 A US3771443 A US 3771443A
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US
United States
Prior art keywords
printing
sheet material
photo
responsive
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00298763A
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English (en)
Inventor
C Georghallis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
English Numbering Machines Ltd
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English Numbering Machines Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by English Numbering Machines Ltd filed Critical English Numbering Machines Ltd
Application granted granted Critical
Publication of US3771443A publication Critical patent/US3771443A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/26—Registering devices
    • B41J13/32—Means for positioning sheets in two directions under one control, e.g. for format control or orthogonal sheet positioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1912—Banknotes, bills and cheques or the like

Definitions

  • This invention relates to machinery for printing sheet material, and provides a mechanism for receiving sheet material in such a machine.
  • MICR magnetic ink character recognition
  • OCR optical character recognition
  • an object of this invention is to provide a mechanism for doing so.
  • the present invention provides a mechanism for receiving a sheet material for printing, including means for receiving the sheet material for printing, means for selecting one of a plurality of printing positions, a light source, a photo-responsive element positioned adjacent to the light source such that the sheet material when in said receiving means is positioned between the light source and the photoresponsive element, whereby the output of the photoresponsive element provides a measure of the light transmittance of the sheet material, and enabling means responsive to said output to enable printing when said output corresponds in a predetermined manner with the printing position selected and to inhibit printing when said output does not so correspond.
  • the means for receiving the sheet material comprises a substantially vertical slot, a stop at one end of the slot, and means for driving the sheet material against the stop.
  • the means for selecting the printing position is a switch having one input contact selectively connectible to one of two output contacts to define a corresponding one of two positions
  • said enabling means comprises two transistors each having its base connected to receive the output of the photoresponsive element and its collector-emitter path biased via a respective output contact of the switch whereby the conduction of the transistors is dependent on the occurence of an output signal from the photoresponsive element which corresponds to the selected switch position.
  • the mechanism may further include switching means operable to actuate a printing mechanism, and in which said transistors control a shunt means across the switching means to enable or inhibit printing.
  • the switching means may suitably be a thyristor arranged to discharge a capacitor through a solenoid coil.
  • the mechanism preferably also includes further photo-responsive means for operating the switching means when a sheet material is received in the receiving means.
  • the further photo-responsive means may comprise second and third photo-responsive elements spaced along the foot of the slot and a reset photo-responsive element spaced from the foot of the slot, the second, third, and reset photo-responsive elements being connected to said switching means through an AND-gate.
  • the second, third and reset photoresponsive elements are connected to a further AND-gate arranged to inhibit further printing until the sheet material has cleared all three elements.
  • FIG. 1 is a schematic front elevation of part of a document printing machine
  • FIG. 2 is an end view corresponding to FIG. 1;
  • FIG. 3 is a circuit diagram of control circuits associated with the device of FIGS. 1 and 2.
  • a document printing machine includes a slot member 10.
  • a sheet material to be printed such as a cheque 12 is dropped into the slot member 10 and is driven to the right by a rubbercovered wheel 14 until it abuts a stop 16.
  • the mechanism also includes three lamps 18, 20, 22 which shine through apertures in the slot member 10 towards photo-responsive devices, in this embodiment phototransistors, 24, 26, 28 and 30, the two phototransistors 28 and 30 being adjacent and both illuminated by the upper lamp 18.
  • the lower phototransistors 24 and 26 and their respective lamps 20 and 22 are located at the bottom of the slot member 10 and co-operate with the circuit of FIG. 3 to ensure that the cheque 12 is fully down in the slot member before printing takes place, as will be explained.
  • the upper phototransistors 28 and 30 also work in conjunction with the circuit of FIG. 3, the former to prevent printing occuring a second time if the cheque 12 bounces, and the latter in accordance with the invention to distinguish between two types of documents, in this embodiment cheques and credit transfers of the type described above.
  • the circuit comprises positive and earthed supply lines 32 and 34, whose voltage is regulated by a Zener diode 36, supplied by a conventional rectifying circuit (not shown).
  • a smoothing capacitor 38 is provided.
  • the lamps 18, 20, 22 are connected in series across the lines 32, 34.
  • the phototransistors 24-30 are each connected across the lines 32, 34 in series with a biasing resistor 40 and a variable resistor 42 which. can be used to set the sensitivity of the phototransistor.
  • Each phototransistor 24-30 is shunted by a capacitor 45 to minimise the effect of noise in the supply.
  • the collector of each of the three phototransistors 24-28 is connected to the base of a respective switching transistor 44, 46 or 48, each connected to the supply lines 32, 34 by appropriate collector and emitter resistors 50.
  • the emitters of the three switching transistors 44-48 are connected to a fire AND-gate 52 formed by diodes 54, 56, 58 and their collectors are connected to a reset" AND-gate 60 formed by diodesz62, 64, 66.
  • the fourth phototransistor 30 is used to detect the type of document by measuring the light transmitted and this is compared with the setting of a print position selector switch 82 (FIG. 3) to enable or inhibit printing, by means of the remainder of the circuit of FIG. 3 as will now be described.
  • the selector switch 82 is set to select the short" printing position corresponding to a cheque. This is the position shown in FIG. 3, and it causes a short indicator lamp 84 to be connected via the switch 82 across the lines 32, 24 and therefore illuminated.
  • the phototransistor 30 receives sufficient illumination to conduct. This brings the collector side of the phototransistor down to almost zero volts and turns off two transistors 86, 88 whose bases are connected thereto. This in turn turns off a transistor 90 fed from the collector of the transistor 86, and thus holds off a further transistor 92 shunted across the gate of the thyristor 70 and earth. However, if a credit transfer document is fed, the phototransistor 30 does not conduct, and the transistors 86, 90,92 and 100 are caused in sequence to conduct, thus short -circuiting the gate of the thyristor 70 and inhibiting printing. It should be noted that the other transistor 88 connected to the phototransistor 30 still does not conduct since its emitter is held at the positive supply voltage by the switch 82, via a lamp 94.
  • the transistor 96 performs a further function.
  • a fault light 98 is provided which is switched across the supply 32, 34 by switching transistor 100 whenever the inhibiting transistor 92 is on.
  • the base of the transistor96 is connected via a resistor 102 to the collector of a transistor 104 whose base is fed by the emitter of 48 controlled by the reset phototransistor 28 and whose emitter is biased by resistors 106 and 108, arranged so that the emitter is two-thirds down from the potential of the positive line 32.
  • the transistor 104 conducts, holding the transistor 96 off and hence keeping the fault light off.
  • the present invention thus provides a mechanism for a printing machine which receives sheets to be fed and checks that the correct type of a number of types of sheets is present, in a simple manner. Furthermore, it will inhibit printing if two or more single sheets are inadvertently fed at the same time.
  • a mechanism for receiving a sheet material for printing including means for receiving the sheet material for printing, means for selecting one of a plurality of printing positions, a light source, a photo-responsive element positioned adjacent to the light source such that the sheet material when in said receiving means is positioned between the light source and the photoresponsive element, whereby the output of the photoresponsive element provides a measure of the light transmittance of the sheet material, and enabling means responsive to said output to enable printing when said output corresponds in a predetermined manner with the printing position selected and to inhibit printing whensaid output does not so correspond.
  • a mechanism as claimed in claim 1, in which the means for receiving the sheet material comprises a substantially vertical slot, a stop at one end of the slot, and means for driving the sheet material against the stop.
  • a mechanism as claimed in claim 3 including further photo-responsive means for operating the switching means when a sheet material is received in the receiving means.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Handling Of Cut Paper (AREA)
  • Credit Cards Or The Like (AREA)
US00298763A 1971-11-03 1972-10-18 Document monitor by light transmittance for enabling printer Expired - Lifetime US3771443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5110271A GB1362589A (en) 1971-11-03 1971-11-03 Sheet printing mechanism

Publications (1)

Publication Number Publication Date
US3771443A true US3771443A (en) 1973-11-13

Family

ID=10458667

Family Applications (1)

Application Number Title Priority Date Filing Date
US00298763A Expired - Lifetime US3771443A (en) 1971-11-03 1972-10-18 Document monitor by light transmittance for enabling printer

Country Status (6)

Country Link
US (1) US3771443A (https=)
JP (1) JPS4854823A (https=)
DE (1) DE2252794A1 (https=)
FR (1) FR2159956A5 (https=)
GB (1) GB1362589A (https=)
SE (1) SE393564B (https=)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922965A (en) * 1973-12-26 1975-12-02 Msi Data Corp Document printer
US4162651A (en) * 1976-04-26 1979-07-31 Concord Computing Corporation Document printer
US4362100A (en) * 1980-07-11 1982-12-07 Wang Laboratories, Inc. Envelope feeder
US20030189610A1 (en) * 2002-04-08 2003-10-09 Samuel Darby Certified proofing
US7032988B2 (en) 2002-04-08 2006-04-25 Kodak Graphic Communications Canada Company Certified proofing
US20070011934A1 (en) * 2005-07-14 2007-01-18 Rayfield Theodore A Multi-use fishing rod holder with alarm

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750875A1 (de) * 1976-11-16 1978-05-24 Vital Zoltan Dr Kombinierte maschine
JPS5884261U (ja) * 1981-12-02 1983-06-07 富士通株式会社 紙ガイドの構造
JP2500274Y2 (ja) * 1991-02-15 1996-06-05 岐阜プラスチック工業株式会社 折り畳みコンテナ
JP2002303010A (ja) * 2001-04-09 2002-10-18 Taisei:Kk 非平面用緩衝パッド及びその製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254595A (en) * 1962-12-28 1966-06-07 Sparrow Vernon Watkins Document imprinting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254595A (en) * 1962-12-28 1966-06-07 Sparrow Vernon Watkins Document imprinting apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922965A (en) * 1973-12-26 1975-12-02 Msi Data Corp Document printer
US4162651A (en) * 1976-04-26 1979-07-31 Concord Computing Corporation Document printer
US4362100A (en) * 1980-07-11 1982-12-07 Wang Laboratories, Inc. Envelope feeder
US20030189610A1 (en) * 2002-04-08 2003-10-09 Samuel Darby Certified proofing
US6793310B2 (en) 2002-04-08 2004-09-21 Creo Americas, Inc. Certified proofing
US7032988B2 (en) 2002-04-08 2006-04-25 Kodak Graphic Communications Canada Company Certified proofing
US20070011934A1 (en) * 2005-07-14 2007-01-18 Rayfield Theodore A Multi-use fishing rod holder with alarm
US20070169395A1 (en) * 2005-07-14 2007-07-26 Rayfield Theodore A Fishing System With Alarm

Also Published As

Publication number Publication date
DE2252794A1 (de) 1973-05-10
JPS4854823A (https=) 1973-08-01
FR2159956A5 (https=) 1973-06-22
GB1362589A (en) 1974-08-07
SE393564B (sv) 1977-05-16

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