US3828669A - Print line registration indicator for type belt - Google Patents

Print line registration indicator for type belt Download PDF

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Publication number
US3828669A
US3828669A US00287323A US28732372A US3828669A US 3828669 A US3828669 A US 3828669A US 00287323 A US00287323 A US 00287323A US 28732372 A US28732372 A US 28732372A US 3828669 A US3828669 A US 3828669A
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US
United States
Prior art keywords
belt
print
counter
transducer
pulleys
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
US00287323A
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English (en)
Inventor
E Bonafino
R Gilbert
J Mako
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
Priority to US00287323A priority Critical patent/US3828669A/en
Priority to GB3566973A priority patent/GB1380668A/en
Priority to FR7328910*A priority patent/FR2199290A5/fr
Priority to JP48087690A priority patent/JPS4966028A/ja
Priority to DE19732344923 priority patent/DE2344923A1/de
Application granted granted Critical
Publication of US3828669A publication Critical patent/US3828669A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/96—Means checking correctness of setting
    • 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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/20—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on endless bands or the like

Definitions

  • a 101/93, 111, 2 111 226/45 transducer is positioned to sense the timing marks as they move in a horizontal direction for operating print 1 References Cited controls in timed relation with the positions of the UNITED STATES PATENTS type characters as they move along the print line and 2,802,666 8/1957 Crosfield 101/181 x also detect differences in amplitude of the transducer 3,041,965 7 1962 Sasaki 101/111 P Signals Caused y vertical movement of the 3,068,787 12/1962 Dall Oglio et al. 101/181 type belt.
  • the output is used to operate indicating 3,152,542 10/ 1964 Chambon 101/181 means which tells which position will print next, and 3,225,988 12/1965 Drenning 226/45 can also be used to enable the perator to de- 3,248,524 4/1966 521111161 235/611 1 E t t i i t ti f th t b lt so th t th p 3,303,775 2 1967 G1annuzz1 101 111 tor may correct it 3,323,699 6/1967 Bricker, Jr.
  • PATENTE AUG] 31974 sum 1 0r 2 V l lllllllllllllllllllllllllllllllll FIG. 3
  • the invention relates generally to printers and it has reference in particular to printers having type characters on an endless belt movable between spaced apart pulleys along a print line.
  • the invention relates to using the timing marks on an endless type belt for detecting movement of the belt out of its normal line of travel.
  • Another object of the invention is to provide for using a single transducer with an endless type belt having a plurality of timing marks for keeping count of the next print position and for also determining any departure from the optimum type belt registration position.
  • Yet another object of the invention is to provide for using a counter and indicating means for both selectively indicating which print position is the next to be printed and what the amount of misregistration of the print belt may be.
  • FIG. 1 is a partial schematic view showing a type belt and transducer in accordance with the teachings of the invention
  • FIG. 2 is an enlarged partial schematic showing of the type belt and transducer with the belt out of registration in a down or low operating position;
  • FIG. 3 is an enlarged partial schematic showing of the type belt and transducer with the belt out of registration in an up or high position;
  • FIG. 4 shows curves illustrating the relative outputs of the transducer for optimum and off-registration conditions
  • FIG. 5 is a schematic diagram of a circuit used with the transducer and counter for indicating which position is next to print and what the vertical alignment position of the type beltis.
  • the reference numeral 10 denotes an endless type beltwhich may comprise a relatively thin band of stainless steel having a plurality of spaced Fingers 12 along one edge provided with'raised Print Characters 14, and positioned torun between spaced apart Pulleys l6 and 18 for presenting a relatively straight line of travel along a print line.
  • the Axis 13 of the Pulley 18 is tiltable to the right as represented by the dot-dash line 13' and to the left as represented by the dot-dash line 13" for lowering or raising the Belt 10 on thepulleys.
  • the Belt 10 is also provided with a plurality of Timing Marks 20, which are scanned by a transducer such as the Magnetic Transducer 24, which is positioned adjacent the Pulley 16, preferably in vertical alignment with the TimingMarks 20.
  • the Timing Marks 20 and the Type Characters 14 are preferably raised and may be formed through an etching process which etchesaway the remainder of the belt surface leaving raised Print Characters 14 and Timing Marks 20.
  • the Type Belt 10 may be-readily changed for providing different type fonts, it happens that belts of slightly different widths may be used. This permits the type belt to wander in a vertical direction.
  • the Type Belt 10 may have a down creep so that the type characters and timing marks are positioned below their normal position by an amount 0. Since this causes misregistration of the type characters, it is desirable to correct this condition, which may be done by tilting the Axis 13 of the Pulley 18 to the left position as shown by the dot-dash line 13". This causes the type belt to rise and correct the down creep.
  • An up creep condition is shown in FIG. 3 where the Belt 101 is above its normal position by an amount b, again caus-. ing misregistration of the type characters.
  • This condition may be corrected by tilting the axis of the Pulley 18 to the right as shown by the dot-dash line 13'.
  • the Transducer 24 By having the Transducer 24 normally aligned with the Type Marks 20 in the vertical direction, for the desired operating position of the Belt 10', movement of the belt up or down from this normal position causes misregistration of the Timing Marks 20 with the Transducer 24, and causes a change in the output signal from the transducer as shown by the curves 0 and d in FIG. 4, which represent the optimum and off-registration outputs, respectively.
  • This variation in output signal may be utilized to indicate the belt position to an operator so that he may change the tilt of the Pulley l8 and correct the position of the Type Belt 10'.
  • a Counter 30 which may be of the binary coded decimal type, is connected through suitable decode means, such as a group select Decode Circuit 32, and individual Decode Circuits 34, and 36 in conjunction with an Inverter 38 for controlling a plurality of indicating devices such as the lightemitting Diodes 41 and 42, which are representative of a plurality of diodesnumbering 132, each representing a print position on the print line of a printer.
  • the Counter 30 is normally advanced by means of Print Compare or Space signals from Printer Control Circuits 43 through NOR 44, NAND 4 and NOR 48.
  • the Counter 30 is reset by a signal applied over Conductor 50 and is decremented by means of a Backspace signal applied over Conductor 52.
  • NAND 54 is connected to NOR 48 for operating the Counter 30 in response to clock signals applied over Conductor 56.
  • a Ramp circuit is provided, comprising a Capacitor C arranged to be charged through a Diode D1, and provided with a discharge circuit including a resistor R,
  • Theoutput of the Transducer 24 in response to the passage of Timing Marks thereby is applied to an Amplifier 62 and then to a Rectifier andFilter Circuit 64, which is connected to the base of a transistor Tl, whose emitter is connected to the ramp Capacitor C.
  • a diode D2 and an Inverter 66v are connected between the anode of the diode D1 and the Rectifier-and Filter Circuit 64.
  • a transistor T2 controlled by Transistor T1 is connected through an Inverter 68 to the NAND 54 to control the gating of pulses from :1 Clock 56 to the Counter 30.
  • a Switch 70 is provided for connecting Conductor 74 to ground when it isdesired to check the registration of the Type Belt 10.
  • a conductor 74 is connected to a plus source of electrical energy through a Resistor 72.
  • Inverter 76 connects the Conductor 74 to a Conductor 78 connected to the NAND 54 and to a NAND 80 in With the CE switch 70 in the normal position the Counter is advanced in response to each Print Compare or Space signal applied to NOR 44 to advance, and through the Decode Circuits 3 2, 34 and 36 sequentially illuminate thelight-emitting diodes to indicate the next position to be printedfAt the same time the Inverter 76 causes the output of the NAND Gate 80 to be up since the output of Inverter 76 will be down. Capacitor C, therefore, charges throughidiode D1. The output of Inverter 66 will be down, pulling the base of transistor T1 to ground so that the transistor is reverse biased and therefore turned off. Transistor T2 is also in the off condition. I v
  • the last count ,of the Counter 30 will be frozen and displayed until Display Control signal goes down. Then the Counter 30 will be reset and capacitor C starts to charge again. This cycle repeats about three times a second.
  • the calibration of the Ramp Circuit 60 should be such that at specified air gap and perfect tracking the displayed sition of the type belt may be adjusted by tilting the axis of the Pulley 18 until the count reaches the specified optimum registration value. The Switch may then be returned to the normal position, and the Counter 30 will continue to operate the light-emitting Diodes 41-42 to indicate the next position to be printed.
  • an endless type belt comprising a flexible metal band positioned on said pulleys to move along said print line, said band having spaced type characters along said band in line with said print line for impacting with said document and a plurality of spaced apart timing marks extending transversely of said belt, the axis of one of said pulleys being tiltable to raise or lower said belt on said pulleys for thus correcting the lateral registration of said belt,
  • a transducer normally aligned with said timing marks for detecting said timing marks as they move past said transducer and producing an outputpulse for each timing mark, said outputs being also proportional to changes in the position of said belt and timing mark transversely of the lengthwise direction of said belt above and below said print line and a common indicating means comprising a counter,
  • first gate means connecting said counter to a printer control source for indicating which print position is next to print
  • timing circuit connected to said second gate means to control connection of said counter to said clock pulse source said timing circuit being responsive to the amplitude of the output of said transducer
  • switch means normally positioned in a first position to activate said first gate means to connect said counter to said printer control source to indicate which print position is next to print, said switch means being positionable in a second position to render said first gate means ineffective and to render effective said second gate means to connect said common counter to said clock pulse source to indicate the transverse position of said type belt relative to said print line and indicate that the axis of one of said pulleys should be tilted to correct for lateral registration of said belt.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
US00287323A 1972-09-08 1972-09-08 Print line registration indicator for type belt Expired - Lifetime US3828669A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00287323A US3828669A (en) 1972-09-08 1972-09-08 Print line registration indicator for type belt
GB3566973A GB1380668A (en) 1972-09-08 1973-07-26 Type belt printer
FR7328910*A FR2199290A5 (fr) 1972-09-08 1973-07-30
JP48087690A JPS4966028A (fr) 1972-09-08 1973-08-06
DE19732344923 DE2344923A1 (de) 1972-09-08 1973-09-06 Typendrucker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00287323A US3828669A (en) 1972-09-08 1972-09-08 Print line registration indicator for type belt

Publications (1)

Publication Number Publication Date
US3828669A true US3828669A (en) 1974-08-13

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ID=23102403

Family Applications (1)

Application Number Title Priority Date Filing Date
US00287323A Expired - Lifetime US3828669A (en) 1972-09-08 1972-09-08 Print line registration indicator for type belt

Country Status (5)

Country Link
US (1) US3828669A (fr)
JP (1) JPS4966028A (fr)
DE (1) DE2344923A1 (fr)
FR (1) FR2199290A5 (fr)
GB (1) GB1380668A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB481600I5 (fr) * 1973-09-27 1976-01-27
US4122769A (en) * 1973-05-23 1978-10-31 Compagnie Honeywell Bull (Societe Anonyme) Control arrangement for a belt printer
US4455936A (en) * 1981-12-28 1984-06-26 Alps Electric Co., Ltd. Printer system with alternate type belt and print hammer power control
US4744683A (en) * 1986-03-25 1988-05-17 International Business Machines Corporation Revolving endless bands comprising means for compensating for a displacement perpendicular to their direction of movement
US20050064971A1 (en) * 2003-09-24 2005-03-24 Naotaka Sasaki Movable-body linear drive assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712998C2 (de) * 1977-03-24 1983-12-22 Ibm Deutschland Gmbh, 7000 Stuttgart Typenbanddrucker
JPS5924516Y2 (ja) * 1980-12-26 1984-07-20 日立工機株式会社 活字ベルト走行位置調整装置
DE3263068D1 (en) * 1981-02-02 1985-05-23 Dataproducts Corp Pulley system for band printers

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802666A (en) * 1953-11-05 1957-08-13 Crosfield J F Ltd Register control systems for moving webs
US3041965A (en) * 1958-06-20 1962-07-03 Oki Electric Ind Co Ltd Type members for a high speed printer
US3068787A (en) * 1960-05-18 1962-12-18 Dall Oglio Giorgio Device for checking longitudinal registration on machines for performing repetitive operations on a continuous band
US3152542A (en) * 1961-05-19 1964-10-13 Machines Speciales Sa Soc Et Devices for automatically preadjusting the different elements of a printing machine
US3225988A (en) * 1963-08-07 1965-12-28 Koppers Co Inc Ultrasonic web position detector and aligning means
US3248524A (en) * 1962-06-04 1966-04-26 Sperry Rand Corp Document skew detection
US3303775A (en) * 1963-09-20 1967-02-14 Ibm Variable speed printer apparatus and type carrier device therefor
US3323699A (en) * 1965-10-04 1967-06-06 Allegheny Ludlum Steel Strip centerline sensor and control
US3366876A (en) * 1963-01-04 1968-01-30 Ampex System for analysis and control of dynamic characteristics of mechanisms
US3463081A (en) * 1967-05-12 1969-08-26 Alfred B Levine Electrical high speed printer
US3497121A (en) * 1967-03-14 1970-02-24 Crosfield Electronics Ltd Register control systems
US3567091A (en) * 1968-08-06 1971-03-02 Mount Hope Machinery Ltd Arrangements for controlling the lateral position of a web of material
US3575107A (en) * 1969-06-02 1971-04-13 Gen Electric Underspeed and undervoltage protection for printer
US3629861A (en) * 1969-11-17 1971-12-21 Mohawk Data Sciences Corp Control for chain printer
US3719139A (en) * 1970-07-14 1973-03-06 Honeywell Inf Systems Italia High-speed printer with selectively operable print hammer
US3724371A (en) * 1970-09-15 1973-04-03 Honeywell Bull Soc Ind Process for manufacturing a type-carrying printing belt

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802666A (en) * 1953-11-05 1957-08-13 Crosfield J F Ltd Register control systems for moving webs
US3041965A (en) * 1958-06-20 1962-07-03 Oki Electric Ind Co Ltd Type members for a high speed printer
US3068787A (en) * 1960-05-18 1962-12-18 Dall Oglio Giorgio Device for checking longitudinal registration on machines for performing repetitive operations on a continuous band
US3152542A (en) * 1961-05-19 1964-10-13 Machines Speciales Sa Soc Et Devices for automatically preadjusting the different elements of a printing machine
US3248524A (en) * 1962-06-04 1966-04-26 Sperry Rand Corp Document skew detection
US3366876A (en) * 1963-01-04 1968-01-30 Ampex System for analysis and control of dynamic characteristics of mechanisms
US3225988A (en) * 1963-08-07 1965-12-28 Koppers Co Inc Ultrasonic web position detector and aligning means
US3303775A (en) * 1963-09-20 1967-02-14 Ibm Variable speed printer apparatus and type carrier device therefor
US3323699A (en) * 1965-10-04 1967-06-06 Allegheny Ludlum Steel Strip centerline sensor and control
US3497121A (en) * 1967-03-14 1970-02-24 Crosfield Electronics Ltd Register control systems
US3463081A (en) * 1967-05-12 1969-08-26 Alfred B Levine Electrical high speed printer
US3567091A (en) * 1968-08-06 1971-03-02 Mount Hope Machinery Ltd Arrangements for controlling the lateral position of a web of material
US3575107A (en) * 1969-06-02 1971-04-13 Gen Electric Underspeed and undervoltage protection for printer
US3629861A (en) * 1969-11-17 1971-12-21 Mohawk Data Sciences Corp Control for chain printer
US3719139A (en) * 1970-07-14 1973-03-06 Honeywell Inf Systems Italia High-speed printer with selectively operable print hammer
US3724371A (en) * 1970-09-15 1973-04-03 Honeywell Bull Soc Ind Process for manufacturing a type-carrying printing belt

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122769A (en) * 1973-05-23 1978-10-31 Compagnie Honeywell Bull (Societe Anonyme) Control arrangement for a belt printer
USB481600I5 (fr) * 1973-09-27 1976-01-27
US3981235A (en) * 1973-09-27 1976-09-21 Sperry Rand Corporation Automatic print gap adjustment arrangement
US4455936A (en) * 1981-12-28 1984-06-26 Alps Electric Co., Ltd. Printer system with alternate type belt and print hammer power control
US4744683A (en) * 1986-03-25 1988-05-17 International Business Machines Corporation Revolving endless bands comprising means for compensating for a displacement perpendicular to their direction of movement
US20050064971A1 (en) * 2003-09-24 2005-03-24 Naotaka Sasaki Movable-body linear drive assembly

Also Published As

Publication number Publication date
DE2344923A1 (de) 1974-03-14
GB1380668A (en) 1975-01-15
JPS4966028A (fr) 1974-06-26
FR2199290A5 (fr) 1974-04-05

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