EP0056955A2 - Verfahren in einer Papierzuführeinrichtung für Drucker - Google Patents

Verfahren in einer Papierzuführeinrichtung für Drucker Download PDF

Info

Publication number
EP0056955A2
EP0056955A2 EP82100237A EP82100237A EP0056955A2 EP 0056955 A2 EP0056955 A2 EP 0056955A2 EP 82100237 A EP82100237 A EP 82100237A EP 82100237 A EP82100237 A EP 82100237A EP 0056955 A2 EP0056955 A2 EP 0056955A2
Authority
EP
European Patent Office
Prior art keywords
feeding
elements
bar
guiding
pins
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.)
Granted
Application number
EP82100237A
Other languages
English (en)
French (fr)
Other versions
EP0056955B1 (de
EP0056955A3 (en
Inventor
Cosimo Cassiano
Paolo Urso
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.)
Bull HN Information Systems Italia SpA
Original Assignee
Honeywell Bull Italia SpA
Honeywell Information Systems Italia SpA
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 Honeywell Bull Italia SpA, Honeywell Information Systems Italia SpA filed Critical Honeywell Bull Italia SpA
Publication of EP0056955A2 publication Critical patent/EP0056955A2/de
Publication of EP0056955A3 publication Critical patent/EP0056955A3/en
Application granted granted Critical
Publication of EP0056955B1 publication Critical patent/EP0056955B1/de
Expired legal-status Critical Current

Links

Images

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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/26—Pin feeds
    • B41J11/32—Adjustment of pin wheels or traction elements, e.g. laterally

Definitions

  • the present invention relates to a paper feeding mechanism for printers such as those used in data processing systems where a printing form with perforations on the sides or a printing support without side perforations can be used as a printing support.
  • printers model 730 - 737 manufactured by CENTRONICS firm An embodiment of such solution is given, for instance, by printers model 730 - 737 manufactured by CENTRONICS firm.
  • Such printers are provided with one plastic feeding element fixed on driving bar rotated by a solenoid or by a step motor.
  • Such feeding element comprises a cylindrical central portion having several grooves where rubber rings are housed and by two lateral pin wheels cooperating with pads which keep the printing form perforations engaged with the pins.
  • the cylindrical central part provides for the feeding of continuous printing form without lateral perforation; to this purpose pressure rolls are also provided which press the printing form against the rubber rings during operation in order to assure the friction required to the paper feeding.
  • the described example of paper feeding mechanism can.operate with non perforated printing forms having different width (the maximum ) width is however determined by the distance between the pin wheels) but it has the disadvantage of being unable to handle side perforated printing forms having different sizes, as the distance between the pin wheels cannot be changed.
  • a first mechanism is supplied to assure the friction feeding of non perforated continuous printing forms (which may have different width). It consists in a feeding roll fixed to a first tractor bar and cooperating with pressure rollers.
  • a second mechanism assures the feeding of the continuous side perforated printing form. It consists in two pin wheels cooperating with pads and mounted on a second tractor bar.
  • the pin wheels may be axially moved along the second bar and locked in a determined position, thus allowing to operate with printing forms having different width.
  • the tractor bars are actuated by the same motor by means of a belt pulley or gear transmission system.
  • the present invention overcomes such disadvantages and provides a simple and unexpensive paper feeding mechanism which allows to operate . with different sizes of both side perforated printing forms and unperforated printing forms.
  • the paper feeding mechanism comprises a pair of feeding elements each one coupled to a pad.
  • Each feeding element and the corresponding pad form a couple which is able to operate with both non perforated printing forms as well as side perforated printing forms.
  • each couple feeding element-pad may be axially moved along a tractor bar and locked in any desired position: thus it is possible to operate with printing forms of different width, up to a maximum width imposed by the printer structure.
  • Fig. 1 is a perspective view of a printer having a paper feeding mechanism according to the invention.
  • the printer comprises a frame, a printing mechanism and a paper feeding mechanism.
  • the frame is formed, for instance, by two sides plates 1, 2 and a base 3.
  • the printing mechanism may be formed, for instance, by two guiding rods mounted between the sides, on which a printing carriage slideably moves.
  • a printing head for instance of the needle type, is mounted on the printing carriage and allows to obtain the printing of several types by a dot composition, obtained through the energization of several needles and the combined transversal movement of the head and carriage.
  • the printing is performed against a platen 4 on which the printing support moves.
  • Platent 4 is fixed to sides 1, 2.
  • the feeding mechanism object of the invention comprises a prismatic driving bar 13, a positioning and guiding rod 14, two cylindrical feeding elements 7, 8, two positioning and guiding arms 9, 10 and two pads 11, 12 coupled to the feeding elements.
  • the driving bar 13 is pivoted on sides 1, 2 by means of bushings and it is rotated by a step motor or by a low inertia motor 15.
  • Positioning and guiding rod 14. is fixed to sides 1, 2 of the frame.
  • Two feeding elements 7, 8 are mounted on tractor bar 13 and may move along its axis.
  • Each of such feeding elements is a cylinder, preferably in plastic material, which is provided along a first circumference with pins 8A and along a second circumference with a groove 8B where one or more rubber rings (preferably 2 rings) are housed.
  • Circunferential portions of the feeding elements which are provided with rings are located internally relative to the circunferential portions provided with pins and considering as reference the direction of bar 13.
  • Fig. 2 shows in detailt the exploded perspective view of a positioning and guiding arm 10 and its relation with feeding element 8 and the corresponding pad 12.
  • the guiding arm is substantially constituted by a body shaped in form of connecting rod and provided with an arm 10A, a small end 10B,a big end 10C.
  • the circular opening in the big end receives a hub 50 integral and coaxial to the cylindrical feeding element 8.
  • Hub 50 as well as the cylindrical feeding element, has a prismatic axial opening 51 where guiding bar 13 is inserted.
  • Hub 50 is further provided with a cylindrical groove 52, intended to house an elastic retaining ring 53 ( Benzing, Seeger ring or alike).
  • feeding element 8 and guiding arm 10 are mutually pivoted so that the relative rotation of the two element according to the ro - tation axis of the tractor bar is permitted,but any relative axial movement is prevented.
  • The-small end 10B of the guiding arm is engaged with guiding rod 14 and is free to axially move along this one.
  • Pad 12 is provided with a pair of drilled tabs 12A, 12B hinged --to a corresponding tab 31 of end 10C by means of a pin 30.
  • Pad 12 is firmly kept in a working position or in an opened position by a return spring 32, suitably fixed to an eye or pin of the pad, on one side, and to an eye or pin of end 10C, on the other one.
  • pad 12 In working position, pad 12 lays on a peripheral portion of feeding element 8.
  • An elongated opening 33 or a groove is provided in the pad zone which, when pad is in working position, gets in contact with the toothed zone of the feeding element, thus avoiding any interference between the pad and the pins.
  • the pressure rollers 34, 35 are hinged, by means of two pins 36, 37, on the pad side opposite to the side hinged to end' 10 C .
  • the rollers are housed in suitable pad seats and, when the pad is in working position, they lay on the rubber rings 36, housed into the groove of feeding element 8.
  • Their rotation axis is substantially parallel to the rotation axis of the guiding rod.
  • the rotation of the feeding elements thus causes the movement of the form.
  • the set of feeding element 8, pad 12 and positioning and guiding arm 10, forms-a traction group.
  • the traction group formed by feeding element 7, pad 11 and positioning and guiding arm 9 is mirror like identical to the first one.
  • the two traction groups may be assembled from identical elements.
  • the traction groups are axially positioned along the guiding rod and the driving bar in order that the side perforations engage with the pins of the two feeding elements.
  • the guiding pads prevent disengagement of the side perforations from the feeding pins.
  • the feeding action exerted by the pins is further aided by the feeding action exerted on the form side portions by the rubber rings and due to the pressure exerted by the pressure rollers.
  • the two traction groups are axially positioned in order the form edges do not interfere with the feeding element pins while the feeding action is exerted by the rubber rings.
  • inventions may be applied to feeding mechanisms where toothed belts can be used instead of pin wheels.

Landscapes

  • Handling Of Sheets (AREA)
EP82100237A 1981-01-22 1982-01-14 Verfahren in einer Papierzuführeinrichtung für Drucker Expired EP0056955B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19261/81A IT1135127B (it) 1981-01-22 1981-01-22 Meccanismo di trasporto carta per stampante
IT1926181 1981-01-22

Publications (3)

Publication Number Publication Date
EP0056955A2 true EP0056955A2 (de) 1982-08-04
EP0056955A3 EP0056955A3 (en) 1983-09-07
EP0056955B1 EP0056955B1 (de) 1985-05-29

Family

ID=11156201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100237A Expired EP0056955B1 (de) 1981-01-22 1982-01-14 Verfahren in einer Papierzuführeinrichtung für Drucker

Country Status (3)

Country Link
EP (1) EP0056955B1 (de)
DE (1) DE3263801D1 (de)
IT (1) IT1135127B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001227A1 (en) * 1981-10-09 1983-04-14 Andersson, Leif, Helmer Paper feed mechanism
DE3412852A1 (de) * 1984-04-03 1985-10-03 Mannesmann AG, 4000 Düsseldorf Transportvorrichtung fuer drucker, insbesondere fuer matrixdrucker
GB2163705A (en) * 1984-08-31 1986-03-05 Alps Electric Co Ltd Paper feeder for printers
US4636100A (en) * 1983-10-14 1987-01-13 Alps Electric Co., Ltd. Paper feed mechanism for recording apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438560A (en) * 1967-07-12 1969-04-15 Burroughs Corp Snap-on web supporting member for web feed mechanism
US3838804A (en) * 1973-05-10 1974-10-01 Ibm Non-shingling forms feed tractor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001227A1 (en) * 1981-10-09 1983-04-14 Andersson, Leif, Helmer Paper feed mechanism
US4501510A (en) * 1981-10-09 1985-02-26 Facit Aktiebolag Apparatus for feeding sheets of material and continuous webs in printers and typewriters
US4636100A (en) * 1983-10-14 1987-01-13 Alps Electric Co., Ltd. Paper feed mechanism for recording apparatus
DE3412852A1 (de) * 1984-04-03 1985-10-03 Mannesmann AG, 4000 Düsseldorf Transportvorrichtung fuer drucker, insbesondere fuer matrixdrucker
DE3412852C2 (de) * 1984-04-03 1986-07-17 Mannesmann AG, 4000 Düsseldorf Transportvorrichtung für Drucker, insbesondere für Matrixdrucker
GB2163705A (en) * 1984-08-31 1986-03-05 Alps Electric Co Ltd Paper feeder for printers
DE3530931A1 (de) * 1984-08-31 1986-03-13 Alps Electric Co., Ltd., Tokio/Tokyo Papiertransportvorrichtung fuer drucker

Also Published As

Publication number Publication date
EP0056955B1 (de) 1985-05-29
IT1135127B (it) 1986-08-20
IT8119261A0 (it) 1981-01-22
DE3263801D1 (en) 1985-07-04
EP0056955A3 (en) 1983-09-07

Similar Documents

Publication Publication Date Title
DE3301797A1 (de) System zum korrigieren einer bandabweichung
DE68921097T2 (de) Halterung für einen Thermodruckkopf eines Thermodruckers für Preisschilder.
DE2819758C2 (de)
EP0033532B1 (de) Farbbandkassette für eine Schreib- oder ähnliche Büromaschine
DE3686834T2 (de) Antrieb fuer uebertragungsmaterial in druckern.
DE2204565C2 (de) Halterung einer herausnehmbaren Farbwalze eines Farbwerks einer Druckmaschine
US4500023A (en) Paper feeding apparatus for printers
EP2070707B1 (de) Druckervorrichtung
DE69215838T2 (de) Druckmedienzufuhr und -halterung für thermischen Tintenstrahl-Drucker/Schreiber
US3917048A (en) Synchronized line feed tensioning and gripping apparatus for printer
EP0056955A2 (de) Verfahren in einer Papierzuführeinrichtung für Drucker
DE3880855T2 (de) Papiertransportvorrichtung für einen Drucker.
DE69211804T2 (de) Antriebsmechanismus für Drucker
DE69007247T2 (de) Drucker mit Platten-Traglagerapparat.
DE69608237T2 (de) Wärmedrucker
GB2163705A (en) Paper feeder for printers
US4826337A (en) Web feed tractor
DE3877590T2 (de) Papierzufuehrvorrichtung fuer einen drucker.
DE3307286C1 (de) Steuervorrichtung fuer Bewegungsablaeufe in Schreib- oder aehnlichen Maschinen mit einem Waermedruckkopf
DE68906573T2 (de) Kassette fuer ein druckband.
GB2032350A (en) Serial printer
DE4018125A1 (de) Thermotransferdrucker und dafuer verwendbare farbbandkassette
US5195834A (en) Ink ribbon cassette
EP0574240B1 (de) Mechanismus zum Zuführen von einem Blatt ohne Ende
US4773579A (en) Web feed tractor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB LI NL SE

17P Request for examination filed

Effective date: 19830826

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR GB LI NL SE

REF Corresponds to:

Ref document number: 3263801

Country of ref document: DE

Date of ref document: 19850704

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890131

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19901214

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19911227

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920120

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920429

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930104

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930131

Ref country code: CH

Effective date: 19930131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19931001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940114

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940114

EUG Se: european patent has lapsed

Ref document number: 82100237.5

Effective date: 19920806