EP0012881B1 - Dispositif d'etablissement automatique des marges, dans une machine à écrire, en fonction de la largeur du papier - Google Patents

Dispositif d'etablissement automatique des marges, dans une machine à écrire, en fonction de la largeur du papier Download PDF

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Publication number
EP0012881B1
EP0012881B1 EP79104874A EP79104874A EP0012881B1 EP 0012881 B1 EP0012881 B1 EP 0012881B1 EP 79104874 A EP79104874 A EP 79104874A EP 79104874 A EP79104874 A EP 79104874A EP 0012881 B1 EP0012881 B1 EP 0012881B1
Authority
EP
European Patent Office
Prior art keywords
paper
sheet
platen
width
margin
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
Application number
EP79104874A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0012881A3 (en
EP0012881A2 (fr
Inventor
Michael Leroy Krieg
Jr. Paul Aloysius Quinn
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0012881A2 publication Critical patent/EP0012881A2/fr
Publication of EP0012881A3 publication Critical patent/EP0012881A3/fr
Application granted granted Critical
Publication of EP0012881B1 publication Critical patent/EP0012881B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/42—Scales and indicators, e.g. for determining side margins

Definitions

  • the present invention relates to a device determining the margins of a sheet of paper printed in a typewriter and more particularly, a detection unit mounted on the carriage and an associated device for determining the width of the paper sheet and calculating margins equal to a predetermined proportion of the total detected width of the sheet of paper.
  • the margin stops are positioned by the movement of the indicator to correspond to the required margins of a letter of particular dimensions (for example, a letter comprising a given number of words).
  • a letter of particular dimensions for example, a letter comprising a given number of words.
  • the operator makes his choice of positions according to the width of the paper on which the printing is to take place. Pressing the keys chosen by the operator causes the corresponding start and end line position codes to be recorded on a recording medium.
  • the codes corresponding to the text to be printed are then recorded on said support without taking into account the format defined by said start and end line position codes.
  • the recording medium is then read to order the printing and all the lines are automatically printed according to the format defined by the said beginning and end of line codes being and head of the recording.
  • This device has no means for detecting the width of the paper and no means for automatically correlating the values of the margins with the detected width of the paper.
  • US Pat. No. 3,809,472 discloses a reprographic machine in which dimensions of the sheet driven in the machine are detected to control the exposure as a function of the lateral parts of the photoconductive drum not covered by the sheet. .
  • the prior art does not present the principle of detecting the width of a sheet to automatically control the establishment of proportional margins in a typewriter.
  • the IBM Technical Disclosure Bulletin Vol. 20, No. 10, March 1978 describes an impression device in which a detection means, mounted on the printing carriage, detects the right edge of the paper while the print head is still upstream of said edge and at a predetermined distance from it. An audible signal alerts the operator of this detection. After this sound signal, the operator can still print a predetermined number of characters before printing is stopped.
  • This document therefore also does not present the principle of detecting the width of the paiper and automatically establishing the margins as a function of this width.
  • the purpose of the device of the present invention is to automatically establish the width of the margins on a sheet and more particularly, to automatically establish margins equal to a predetermined proportion of the total detected width of a sheet of paper.
  • the present invention uses a detector mounted on a carriage to detect the light transitions between the plate and the sheet of paper placed thereon.
  • the carriage-mounted detector starts scanning at the left edge of the stage. Assuming that the platen is darker than the paper, the detector detects a brightness transition at the left edge of the sheet and a transition reverse at the right edge of it. Scanning continues after the second light transition to compensate for the premature transition signals generated by the dark areas of the sheet of paper. The distance between the first and the second transition corresponds to the width of the sheet.
  • margins equal to a predetermined proportion of the total detected width of the sheet are automatically established.
  • the position of these margins on the sheet is determined by comparing the detected information indicated above with the information delivered by a detector mounted on a carriage, which determines the position of the carriage relative to the plate at each step of the carriage. From this comparison, the number of steps required for the carriage in its extreme left position to reach the left edge of the paper, the right edge of the paper and the two margins, is determined.
  • FIGS 1 and 2 show an ink jet printer 12 comprising inter alia, a carriage 14 on which is mounted a printing assembly.
  • the printing assembly comprises an ink jet printhead 16, the nozzle 18 of which emits an ink jet 20 towards the paper 22 carried by the plate 24.
  • the ink jet is formed by droplets generated by pressure variations affecting the ink jet in the print head 16.
  • the droplets forming the current 20 are "in flight" towards the plate 24, they are charged by the charging electrode 26, then they pass to the through deflection electrodes 28 before striking the paper 22 or any other print receiving medium carried by the plate 24.
  • the carriage 14 moves relative to the plate 24, in the two directions indicated by the double arrow 30, under the control of a drive assembly 32.
  • the drive assembly 32 comprises a DC motor 34 coupled suitably to the carriage 14 to ensure movement of said carriage relative to the print receiving medium.
  • the DC motor 34 is connected by a toothed belt 36 or the like, to a cable winding drum 38 carrying several turns of cable 40 each of whose two ends is respectively connected to one of the two opposite sides of the carriage 14 so that the rotation of the motor, in its direction, causes the movement of the carriage in one of the directions indicated by the double arrow 30.
  • a guide rod (not shown) carries and guides the carriage 14 during its movement over the entire length of the plate 24.
  • a blade switch 39 is mounted at each end of the plate 24 and these two switches are energized when the ink jet print head 16 carried by the carriage reaches their height.
  • a marking strip is used in association with a light emission and detection module 44 (ci- after referred to as the locating strip scanning unit), comprising a mirror 46, to indicate both the position of the carriage 14 and the direction of its movement.
  • slots are provided adjacent to the periphery of a transmitting wheel 48 driven by the motor 34, which pass through a coding unit formed by a light-emitting diode 50 or other equivalent element and d '' a phototransistor 52 so that a pulse is emitted by the phototransistor when passing a slot between the electro-diode luminescent and phototransistor.
  • the information signals obtained are processed in circuits not shown to be transformed into a control voltage for the motor 34. A more detailed explanation of this circuit can be found in European patent application No. 79103617.1 filed by the de- applicant on September 24, 1979.
  • the paper scanning unit 54 of the present invention is also placed on the carriage 14. As shown in FIGS. 1 and 2, the unit 54 is mounted on the carriage 14 opposite the unit 44. The scanning unit 54 traverses the entire width of the sheet 22 and the length of the plate 24 during a scanning operation. Any conventional scanning unit capable of distinguishing between dark areas and bright areas and of recording the transitions between these areas could be used as a scanning unit 54.
  • FIG. 5 shows an assembly 55 of circuits forming a scanning unit meeting the requirements for the scanning unit 54.
  • This assembly 55 comprises a light-emitting diode (LED) 56 or similar light-emitting device and a phototransistor 58 connected together to form a Darlington assembly 60.
  • LED light-emitting diode
  • the phototransistor 58 detects any modification of the energy emitted by the LED diode 56 and reflected by the paper 22 or the plate 24 (depending on the position of the carriage 14 and the dimensions of the sheet carried by the plate). A modification is saved at each light transition (paper platinum or paper to platinum). A current signal is generated, then is transformed by the transistor 62 in a suitable voltage to be applied to a rocker of Schmitt 64. The digital output on the line 66 delivered by the rocker 64 in the form of a pulse by transition is applied to the scale 68 shown in Figure 3.
  • a start signal is applied to the flip-flops 68 and 72 by the line 70 when the carriage 14 begins its race along the length of the plate 24. (This signal can be seen at point 200 of the chronological diagram in FIG. 6).
  • the paper scanning unit 54 scans the dark area of the platen 24. The first transition appears when the scanning unit meets the left edge of the sheet 22.
  • the circuits 55 of the scanning unit paper generate an impulse at each transition, which is applied by line 66, to flip-flops 68, 72 and 74.
  • the positive edge of the transition signal on line 66 (fig. 3) , conditions flip-flops 72 and 74.
  • a left edge pulse leaves flip-flop 72 via line 76 to be applied to flip-flop 74 and to a register 102 which will be described later.
  • An inverter 78 is arranged between the circuits 55 of the paper scanning unit and the flip-flop 68 so that the trailing edge of a transition pulse conditions flip-flop 68 to cause the emission, on line 80, of a pulse indicating the end of a light zone / dark zone transition.
  • This pulse on line 80 will be treated in more detail later.
  • the scanning unit 44 of the labeling strip detects the position of the carriage at each step or position thereof and delivers this information by the lines 82 to a printing position counter 84. Consequently, the position on the marking strip 42 corresponding to the point where the left edge of the sheet of paper 22 has been detected on the plate 24, is recorded.
  • the ink jet print head 16 When the paper scanning unit 54 meets the left edge of the paper 22, the ink jet print head 16 is at a distance (x) from the left edge of the papiper 22 (see Figure 1).
  • a switch assembly 86, shown in Figures 3, and 7 is used to compensate for this offset (x) between the scanning unit 54 and the ink jet print head 16.
  • the switches shown in Figure 7 are conventional switches programmed to compensate for distance (x).
  • the offset (x) between the ink jet print head 16 and the paper scanning unit 54 corresponds to a count of nine marks on the marking strip 42. Thanks to the switch assembly 86 of FIG. 7, the ink jet print head 16 appears in the logic of FIGS.
  • This offset compensation account delivered by the switches 86 of FIG. 7 is applied to the two-complement circuit 88 which is part of an offset subtraction circuit 90.
  • An example of a 12-bit binary circuit, of complement two, is shown in Figure 8.
  • This two complement circuit is formed by a series of inverters and adders. When a binary word enters the inverters of the two's complement circuit 88, it is inverted and a "1" is added to it and this inverted word is transferred through a series of adders to give the sum in addition to two of the word.
  • the output of the two's complement circuit on line 92 passes to the adder 94 of the offset subtraction circuit 90 where it is subtracted from the information from the printing position counter 84 applied to the adder 94 by the line 96.
  • This subtraction operation is carried out due to the fact that the detector 44 of the labeling strip detects the position of the ink jet print head 16 relative to the platen at each count and not the position of the paper scanning unit 54 at each count along the registration strip 42.
  • the subtraction operation gives the true position of the left edge of the paper 22 relative to the print head 16.
  • a false right paper edge pulse is generated by flip-flop 74 on line 98 and applied to the right edge register 100 if a dark area (for example, a pre header -printed) on the paper 22 is scanned by the paper scanning unit 54.
  • a light zone / false dark zone transition pulse will be generated on line 66 and the flip-flop 74 as well as the other logic of FIGS. 3 and 4 will believe that the right edge of the paper 22 has been detected.
  • the light zone / dark zone transition pulse appears at point 202 on the curve referenced "transitions”.
  • a left edge pulse 204 was generated when the dark zone / light zone transition pulse 206 appeared.
  • a right edge pulse 208 is generated when the light zone / dark zone transition pulse 202 is generated by circuit 55 of the paper scanning unit.
  • the flip-flop 68 stores an end of light zone / dark zone transition pulse and transmits this indication by line 80 to the AND gate 104. This end pulse transition from light area to dark area is shown in point 210 of the "completion" line in the time diagram in Figure 6.
  • a dark area / bright area transition pulse will be generated by circuit 55 of the paper scanning unit (we can see it at point 212 in figure 6) and applied by line 66 to gate ET 104.
  • This high level pulse combined on gate 104 with the other high level pulse (false light zone / dark zone transition end pulse) from flip-flop 68, will cause the application of a low level pulse on line 106 (because the output of the door 104 is inverted), which will consist of a deconditioning signal for the flip-flop 74 and the straight edge register 100.
  • this dark zone / light zone transition pulse indicates to the system and to the associated logic that the zone transition signal bright / dark area
  • the previous one (which would correspond to the right edge of sheet 22) was a false signal and they should expect to receive another light zone / dark zone transition signal.
  • This false value is unconditioned or erased from flip-flop 74 and from the straight edge register 100 by unconditioning signal applied on line 106.
  • such a deconditioning signal 214 is generated each time that a dark zone / light zone transition appears (for example when the paper scanning unit 54 meets all of first the left edge of the paper 22 and after the writing on the sheet has triggered a light zone / dark zone (false) transition pulse.
  • the output 108 of the flip-flop 74 which is applied to the AND gate 110 remains at the high level until the right edge of the paper 22 is detected. Each time the right edge of the paper 22 is detected, an output 98 appears at the flip-flop 74. This output 98 is applied to the register of straight edges 100. In the chronological diagram of FIG. 6, it can be seen that each time the signal right edge goes high or a light zone / dark zone transition appears, the signal carried by line 108 will always be opposite to it. The left edge output pulse from flip-flop 72 through line 76 has already been applied to the left edge register 102 at this time.
  • a pulse applied to the flip-flop 74 by the line 66 causes the delivery on the line 98 of a right edge signal which will be recorded in the right edge register 100.
  • This light zone / dark zone transition pulse appears at point 215 on the line of transitions in FIG. 6.
  • an output 112 of the right edge register 100 will be applied to selector 114.
  • This selector may for example be the selector / multiplexer marketed by TEXAS INSTRUMENT under No. 74157. From selector 114, this signal for detecting a straight edge of the sheet is applied by line 116 to the paper width subtraction circuit 118.
  • This signal appears on line 122 which is applied to the selector 114.
  • the selector 114 receives a counter signal by line 96 from the printing position counter 84, which corresponds to the position where the right margin blade switch 39 has been energized.
  • the output of selector 114 is again delivered to line 116.
  • the two-complement circuit 124 and the addition circuit 126 of the paper width subtraction circuit 118 are practically similar to the two-complement and addition circuits of the offset subtraction circuit 90.
  • the value stored in the register of left edges 102 is applied to the paper width subtraction circuit 118 by line 128 and is subtracted from the right edge value selected from the selector 114 which is applied to the paper width subtraction circuit 118 by line 116
  • the value of the difference delivered by the circuit 118 corresponds to the actual detected width of the paper 22.
  • This output is applied by the line 130 to the comparator 132 (see FIG. 4). As seen in Figure 9, the bottom three bits of the 12-bit signal on line 130, between adder 126 and comparator 132, went low to form what is called a division circuit by eight.
  • This circuit divides the value of the width of the paper by eight where, in other words, 12.50% of the width of the paper 22 will be reserved for the margins. Proportional margins for the sheet of paper 22 carried by the plate 24 of Figure 1 can thus be determined. It is obvious that different proportional margins could be created by going to the low level of the different numbers of bits of the 12-bit signal appearing on line 130. For example, the three bits indicated by (y) in figure 9 have only been set low to show how proportional margins can be created for the sheet of paper carried by the stage.
  • FIG. 10 the switching circuit 134 corresponding to block 134 of Figure 4, which determines the maximum size of the margins for the sheet 22.
  • a desired maximum margin width is therefore programmed by the switches 134 of FIG. 10 (the switches shown are conventional TTL switches).
  • the value programmed by the maximum margin width switches 134 has been established with a decimal count of 300, that is to say that 30 mm of margin is left on each side of the sheet 22. This value was chosen assuming that each mark on the marking strip 42 of Figure-1, represents 0.1 mm.
  • a maximum margin value always appears on line 136 and is applied to comparator 132.
  • This maximum margin value is compared in comparator 132 to the proportional margin width which is applied to comparator 132 by line 130. If the width of proportional margin is less than the maximum margin width, the comparator 132 delivers a signal via line 138 to the selector 140 so that the latter accepts the value of the proportional margin on line 130. If the proportional margin width exceeds the width maximum margin, the comparator 132 causes the selector, via line 138, to accept the maximum margin value on line 136. (The selector 140 is practically similar to the selector 114 which was discussed above). Whatever the margin width accepted by the selector 140, its output will be applied to line 142.
  • the margin width carried by line 142 is applied to adder 144 where it is combined with the detected width of the left edge of the paper, on line 128. The combination of these two values gives the output of adder 144 , the actual position of the left margin for the particular sheet of paper 22 placed on the plate 24.
  • the value of the right edge of the paper on line 116 from the selector 114 is applied to the adder 146 where it is combined with the value of margin on the line 142 from the selector 140. Before the combination of these two values, the value carried by the line 142 crosses the two-complement circuit 148.
  • the adder 146 and the circuit 148 form a subtraction circuit 150 which is practically similar to the subtraction circuit 90. In fact , the input value to circuit 148 is subtracted from the value indicating the position of the right edge of the sheet, entering via line 116 in the adder 146.
  • the output of the adder 146 indicates the position of the margin right of sheet 22.

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  • Accessory Devices And Overall Control Thereof (AREA)
EP79104874A 1978-12-21 1979-12-04 Dispositif d'etablissement automatique des marges, dans une machine à écrire, en fonction de la largeur du papier Expired EP0012881B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/971,982 US4265556A (en) 1978-12-21 1978-12-21 Apparatus for setting proportional margins based upon the width of a scanned sheet of paper
US971982 1978-12-21

Publications (3)

Publication Number Publication Date
EP0012881A2 EP0012881A2 (fr) 1980-07-09
EP0012881A3 EP0012881A3 (en) 1981-03-25
EP0012881B1 true EP0012881B1 (fr) 1984-03-28

Family

ID=25519015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104874A Expired EP0012881B1 (fr) 1978-12-21 1979-12-04 Dispositif d'etablissement automatique des marges, dans une machine à écrire, en fonction de la largeur du papier

Country Status (6)

Country Link
US (1) US4265556A (it)
EP (1) EP0012881B1 (it)
JP (1) JPS5586783A (it)
CA (1) CA1122327A (it)
DE (1) DE2966860D1 (it)
IT (1) IT1165436B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625488A (en) * 1979-08-09 1981-03-11 Canon Inc Printer
JPS5759792A (en) * 1980-09-29 1982-04-10 Canon Inc Output apparatus
JPS60174673A (ja) * 1984-02-20 1985-09-07 Sharp Corp プリンタの紙押え装置
JPH0632963B2 (ja) * 1984-03-12 1994-05-02 キヤノン株式会社 出力制御方法
GB2159100B (en) * 1984-05-18 1988-10-26 Unisys Corp Passbook printer
FR2581931B1 (fr) * 1984-05-18 1988-10-07 Burroughs Corp Systeme d'impression.
DE3576300D1 (de) * 1984-07-09 1990-04-12 Sharp Kk Papierzufuhranordnung zur anwendung in einem drucker.
JPS61185479A (ja) * 1985-02-13 1986-08-19 Sharp Corp 自動マ−ジン設定装置
US5450121A (en) * 1991-12-20 1995-09-12 Compaq Computer Corporation Margin control for laser printers
US5120040A (en) * 1989-11-09 1992-06-09 Dataproducts Sheet media tray and mechanism for feeding media of two different sizes
JP2608807B2 (ja) * 1991-01-19 1997-05-14 セイコープレシジョン株式会社 プリンタの記録用紙長検出方法
JPH04244864A (ja) * 1991-01-29 1992-09-01 Kanzaki Paper Mfg Co Ltd サーマルプリンタ
JP2907597B2 (ja) * 1991-07-29 1999-06-21 キヤノン株式会社 記録媒体の検出方法
JPH05345453A (ja) * 1992-06-16 1993-12-27 Nec Niigata Ltd プリンタのキャリッジ位置制御装置
US5466079A (en) * 1995-01-27 1995-11-14 Hewlett-Packard Company Apparatus for detecting media leading edge and method for substantially eliminating pick skew in a media handling subsystem
US5746521A (en) * 1996-12-20 1998-05-05 Intermec Corporation Thermal printhead with integrated printhead position sensor
US6644773B2 (en) * 2002-03-15 2003-11-11 International Business Machines Corporation Method, system, and article of manufacture for performing registration calibration for printing devices
US7537331B2 (en) * 2002-08-21 2009-05-26 Seiko Epson Corporation Printing apparatus, program, and printing method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020996A (en) * 1959-09-01 1962-02-13 Royal Mcbee Corp Systems for automatically controlling line feeding and tabulating mechanisms in typewriters of like machines
DE1611441B2 (de) * 1968-02-17 1973-06-14 Triumph Werke Nürnberg AG, 8500 Nürnberg Optisch abtastbare steuerschiene fuer buchungs- oder aehnliche maschinen
US3785471A (en) * 1971-08-30 1974-01-15 I Dodds Letter placement indicator for typewriters and means responsive to the indicator for simultaneous setting of margin stops
BE793559A (fr) * 1971-12-30 1973-06-29 Xerox Corp Machine electrostatographique comportant un dispositif de pre-developpement d'exposition
US3831728A (en) * 1972-12-11 1974-08-27 Ibm Ink jet printing apparatus with overrun of printhead to insure better visibility
US3923137A (en) * 1973-04-05 1975-12-02 Casio Computer Co Ltd Information recording apparatus
JPS5258613A (en) * 1975-11-10 1977-05-14 Hitachi Ltd Paper margin detecting system for printer
JPS5362534A (en) * 1976-11-16 1978-06-05 Canon Inc Printer
DE2705282B2 (de) * 1977-02-09 1979-02-22 Olympia Werke Ag, 2940 Wilhelmshaven Vorrichtung zum Positionieren eines Schreibwerkes
US4152083A (en) * 1977-08-10 1979-05-01 Teletype Corporation Margin control for printing apparatus
US4180704A (en) * 1978-06-28 1979-12-25 International Business Machines Corporation Detection circuit for a bi-directional, self-imaging grating detector
US4180703A (en) * 1978-06-28 1979-12-25 International Business Machines Corporation Bi-directional, self imaging grating detection apparatus

Also Published As

Publication number Publication date
CA1122327A (en) 1982-04-20
EP0012881A3 (en) 1981-03-25
IT7928134A0 (it) 1979-12-18
JPS5729277B2 (it) 1982-06-22
IT1165436B (it) 1987-04-22
US4265556A (en) 1981-05-05
DE2966860D1 (en) 1984-05-03
EP0012881A2 (fr) 1980-07-09
JPS5586783A (en) 1980-06-30

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