EP0120320B1 - Bâti pour imprimante en série - Google Patents

Bâti pour imprimante en série Download PDF

Info

Publication number
EP0120320B1
EP0120320B1 EP84101993A EP84101993A EP0120320B1 EP 0120320 B1 EP0120320 B1 EP 0120320B1 EP 84101993 A EP84101993 A EP 84101993A EP 84101993 A EP84101993 A EP 84101993A EP 0120320 B1 EP0120320 B1 EP 0120320B1
Authority
EP
European Patent Office
Prior art keywords
rider
side plate
side plates
screw
platen
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
EP84101993A
Other languages
German (de)
English (en)
Other versions
EP0120320A2 (fr
EP0120320A3 (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
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 filed Critical Honeywell Bull Italia SpA
Publication of EP0120320A2 publication Critical patent/EP0120320A2/fr
Publication of EP0120320A3 publication Critical patent/EP0120320A3/en
Application granted granted Critical
Publication of EP0120320B1 publication Critical patent/EP0120320B1/fr
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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/02—Framework

Definitions

  • the present invention relates to a serial printer frame and, more precisely, to the means securing the platen and the printing carriage guiding bars to such frame.
  • the frame of a serial printer is generally constituted by a basement and by two side plates provided with suitable housings where the ends of the platen and of the carriage guiding bars are inserted and steadily restrained.
  • the printing carriage where a printing head is mounted, slides along the guiding bars to subsequently take different printing positions along a printing line.
  • the carriage is moved by a motor, preferably a step motor, through a flexible transmission, generally and preferably a toothed belt.
  • the paper feeding for the printing of several lines is performed by suitable feeding elements, such as tractors or pin wheels, or by a cylindric shaped platen rotatable around its axis and which cooperates with suitable pressure rollers pressing the paper against the platen.
  • suitable feeding elements such as tractors or pin wheels, or by a cylindric shaped platen rotatable around its axis and which cooperates with suitable pressure rollers pressing the paper against the platen.
  • a perfect parallelism between the printing platen and the printing carriage guiding bars is required in the serial printers and, particularly, in those printers which must perform high quality printing.
  • These adjusting means consist of fixing and gauging screws which act in radial directions contained in the side plate plane or in a plane parallely thereto.
  • the possible position inaccuracy in the blanking of the side plates does not affect at all the relative position of the housings therein. Also the possible wear of the blanking fixture (die and punch) equally affects the relative distances of the housings on both side plates.
  • the platen and guiding bar ends are firmly pressed in the related dihedrals by retaining riders which eliminate the slacks among the elements by performing a suitable pressure on said ends towards the dihedral apex.
  • the clamping riders are fixed to the panels by tapered head screws which get through the riders and are screwed to the side plates perpendicularly to the plate plane.
  • the riders pressure on the platen and guiding bars ends is obtained by interaction of the tapered screw heads with corresponding tapered housings.
  • the distance between the contact point of the riders, positioned for the assembling, with the platen or the bar ends and the axis of the screw housings in the side plates is greater than the distance between the contact point of the riders with the platen or the bar ends and the axis of the tapered housings in the riders.
  • the riders are preferably embodied with plastic material in order to assure a suitable elastic extension.
  • the frame of Fig. 1 comprises 2 side plates 1A, 1B firmly restrained to a basement 1C.
  • Both basement 1C and side plates 1A, 1B are in metal sheet of suitable thickness in order to provide a high strength to the equipment.
  • the two side plates 1A, 1B are plane and identical each other.
  • Side plates 1A, 1 B of Fig. 1 support guiding bars 4, 5 and a shaft 2 on which a cylindrical platen 3 is mounted.
  • a printing carriage not shown, axially slides along the guiding bars.
  • Guiding bar 5 generally acts as guiding rail to avoid the carriage rotation around bar 4.
  • the platen may be a fixed or a rotating platen.
  • Fig. 1 shows the rotating platen case.
  • shaft 2 The ends of shaft 2 are engaged in two bearings 6A, 6B which are housed in two housings 7A, 7B of side plates 1A, 1B respectively.
  • Such ends may protrude externally from side plates 1A, 1B for coupling with motor means, not shown.
  • the ends of guiding bar 6 are directly housed into two housings 8A, 8B of side plates 1A, 1B respectively.
  • Such ends protrude externally from side plates 1A, 1B.
  • the ends of guiding bars 5 are engaged in two holes 10A, 10B of side plates 1A, 1B through two housings 9A, 9B.
  • Fig. 2 partially shows the contour of one of the side plates.
  • V shaped housing 7 constitutes a supporting dihedral where bearing 6 lays in a stable position by contacting the housing in two generating lines 30,31.
  • housing 8 V shaped too, constitutes a supporting dihedral where the end of bar 4 lays in a stable position by contacting the housing in two generating lines 33, 34.
  • the distance between bearing 6 axis and bar 4 axis is equal on both the side plates and such distance is not affected by positioning slacks.
  • bearings 6A, 6B are steady pressed in housings 7A, 7B by two riders 11A, 11B respectively.
  • Such riders are constituted by a semitoroidal body 12A, 12B inside which bearings 6A, 6B are respectively housed.
  • the body externally protrudes with two fixing ears each one provided with a hole 15A, 15B and 16A, 16B respectively.
  • the riders are fixed to side plates 1A, 1B respectively by means of tapered head screws 13A, 14A, 13B, 14B respectively.
  • Such screws gets through holes 15A, 15B and 16A, 16B and are screwed into corresponding threaded housings formed on the side plates and respectively indicated by reference numbers 19A, 20A,19B,20B.
  • guiding bar 4 is steady pressed in housings 8A, 8B by two riders 21A, 21 B respectively.
  • Riders 21A, 21B are fixed to the side plates, each one by a tapered head screw 24A, 24B respectively, which is engaged in a second hole 23A, 23B respectively of the riders and is screwed in a corresponding threaded housing, 25A, 25B respectively, formed in the side plates.
  • Screws 13, 14, 24 act with a screwing axis perpendicular to the side plates plane (and therefore parallel to the axis of the platen and of the guiding bars) and, once clamped they steady press riders 11A, 11B, 21A, 21B against the side plates.
  • threaded housing 25 is arranged in order that its axis has a distance H1 from generating line 38 of bar 4 more far away when this last is engaged into dihedral 8.
  • Figs. 3 and 4 respectively show in front view and in section view according to plane A-A, rider 21.
  • the rider has an upper tapered opening 22 and a lower opening 23.
  • Upper opening 22 is intended to receive the guiding bar end and has a diameter slightly larger than the bar to ease its insertion.
  • Lower opening 23 is intended to receive a fixing screw and comprises a cylindrical portion 35 and a tapered housing 36.
  • the axis of tapered housing 36, parallel to the axis of opening 22, is at a distance H from generating line 37 more far away of opening 22.
  • H is suitably smaller than H1.
  • diameter D1 of seat 35 must be equal to D+(Hl-H) . 2.
  • Such alignment may be established even if H is lesser than H1 owing to the opening diameter D1 which is wider than the screw and the threaded housing 25 diameter.
  • Screw 24 is inserted into opening 23 and it is screwed into housing 25.
  • Screw 24 when screwed into housing 25, has an eccentric position as to the opening 23 that is its axis is in opposition to generating line 37 as regards the axis of tapered housing 36.
  • the tapered head begins to interfere with the lower surface of tapered housing 36 and pull downwards rider 21 in orderto make tapered housing 36 coaxial to the screw.
  • This shift is opposed by the contact between the bar and the rider in correspondence of generating line 37, but it can take place thanks to an elastic elongation of the rider which exerts a pull down force on the bar end.
  • riders 11A,11 B The function carried out by riders 11A,11 B is the same even if, in this case, the clamping occurs by means of two screws, instead of one and the rider body acts on bearings 6A, 6B by elongating out of the external surface of the side plates towards the inside.
  • side plates 1A and 1B may consist in plane metallic elements obtained by blanking and bending operations are not required for obtaining support or fixing wings for rider of conventional type, where clamping screws acts in the same direction of the force they have to perform.
  • the described printed frame is only a preferred embodiment of the invention and that several variants can be brought. Riders such as the disclosed ones can for instance be used only for positioning the platen bearings; while the guiding bar ends may be positioned into the corresponding housings by different devices.
  • the cylindric shaped housings 35 can have a form differentfrom the one described which has circular section of diameter D1 suitably wider than the one of the screws they have to receive.
  • they may consist of a groove with semicirccu ends, having a wideness equal to the diameter of the screw to be housed.
  • Such grooves may be eccentrically elongated as to the tapered portion in order to allow at first the easy insertion, without interference, of the screw in eccentric position astothetapered housing, and then the relative shift of the screw within the groove, without interference, up to the coaxial alignment ofthe screw and of the tapered housing.

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Common Mechanisms (AREA)

Claims (2)

1. Bâti pour imprimante en série, comprenant deux plaques latérales (1A, 1B), une structure de base (1C), un cylindre d'impression (3), une tige de guidage (4) supportant un chariot d'impression, ledit cylindre d'impression et ladite tige de guidage étant montés en relation parallèle au moyen d'extrémités de forme cylindrique assujetties auxdites plaques latérales, caractérisé par le fait que:
lesdites plaques latérales sont des tôles métalliques planes mutuellement identiques, et présentent des logements (7A, 7B, 8A, 8B) en forme de dièdres pour le positionnement de chacune desdites extrémités, par contact sur une génératrice de chaque côté de l'un correspondant desdits dièdres, et par le fait qu'il présente, par ailleurs:
des moyens de fixation (11A, 11B, 21A, 21B, 13A, 14A, 13B, 14B, 24A, 24B) de chacune desdites extrémités dans l'un correspondant desdits logements d'une plaque latérale, propres à appliquer, auxdites extrémités, une force dirigée vers le sommet du dièdre correspondant.
2. Bâti pour imprimante en série selon la revendication 1, caractérisé par le fait que lesdits moyens de fixation comprennent, pour chaque plaque latérale, au moins une pièce de chevauchement (11A, 11B, 21A, 21B) et au moins une vis (13A, 14A, 13B, 14B, 24A, 24B) à tête tronconique pour assujettir ladite pièce de chevauchement à la plaque latérale en correspondance avec l'un desdits dièdres, ladite pièce de chevauchement étant munie d'une première ouverture pour recevoir l'une desdites extrémités et d'un chambre tronconique destinée à ladite vis et à sa tête tronconique associée, chaque plaque latérale étant percée d'une seconde ouverture destinée à recevoir ladite vis à axe perpendiculaire à ladite plaque latérale,
ladite seconde ouverture dans la plaque latérale et ladite chambre dans la pièce de chevauchement étant positionnées de telle sorte que, lors du blocage de ladite vis sur ladite plaque latérale, ladite tête de la vis applique par interaction avec ladite pièce de chevauchement dans ladite chambre tronconique, à l'extrémité engagée dans ladite première ouverture de la pièce de chevauchement, une force dirigée vers le sommet dudit dièdre correspondant.
EP84101993A 1983-03-21 1984-02-25 Bâti pour imprimante en série Expired EP0120320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2017283 1983-03-21
IT20172/83A IT1160812B (it) 1983-03-21 1983-03-21 Struttura meccanica di una stampante seriale

Publications (3)

Publication Number Publication Date
EP0120320A2 EP0120320A2 (fr) 1984-10-03
EP0120320A3 EP0120320A3 (en) 1986-01-29
EP0120320B1 true EP0120320B1 (fr) 1988-05-11

Family

ID=11164397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101993A Expired EP0120320B1 (fr) 1983-03-21 1984-02-25 Bâti pour imprimante en série

Country Status (5)

Country Link
EP (1) EP0120320B1 (fr)
KR (1) KR880001141B1 (fr)
DE (1) DE3471046D1 (fr)
FI (1) FI77603C (fr)
IT (1) IT1160812B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206313A (en) * 1987-07-01 1989-01-05 Printronix Inc Printer having interchangeable shuttle assembly
US5215395A (en) * 1989-05-09 1993-06-01 Texas Instruments Incorporated Printer chassis
DE69207381T2 (de) * 1991-07-12 1996-06-27 Canon Kk Tintenstrahlaufzeichnungssystem
EP0585923B1 (fr) * 1992-09-03 1998-12-09 Canon Kabushiki Kaisha Appareil d'enregistrement par jet d'encre
US5838345A (en) * 1996-06-21 1998-11-17 Eastman Kodak Company Apparatus for maintaining the positional relationship of a print head

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954951A (en) * 1959-01-26 1960-10-04 Viewlex Inc Slide lock mounting means
US4222673A (en) * 1978-09-20 1980-09-16 Durango Systems, Inc. Print head carriage assembly for serial printers

Also Published As

Publication number Publication date
FI77603C (fi) 1989-04-10
IT1160812B (it) 1987-03-11
KR840007990A (ko) 1984-12-12
KR880001141B1 (ko) 1988-07-01
FI841061L (fi) 1984-09-22
IT8320172A0 (it) 1983-03-21
EP0120320A2 (fr) 1984-10-03
FI77603B (fi) 1988-12-30
DE3471046D1 (en) 1988-06-16
EP0120320A3 (en) 1986-01-29
FI841061A0 (fi) 1984-03-16

Similar Documents

Publication Publication Date Title
CA1316756C (fr) Support de tete d'imprimante thermique
US4611939A (en) Sheet feeding device for an impact-type printer
EP0120320A2 (fr) Bâti pour imprimante en série
US20090290010A1 (en) Thermal printer
EP1378356B1 (fr) Dispositif pour nettoyer un cylindre
US4304348A (en) Roll type sheet material feeding apparatus
US4468144A (en) Detachable carriage assembly for printer
CN114939771B (zh) 内芯与金属片的变形安装装置
CN218284117U (zh) 一种用于高速线缆激光喷码的扫描机构
US11897273B2 (en) Print device
KR20080041516A (ko) 화상형성장치
CN117601574B (zh) 一种适应性高的打印机
CN213501454U (zh) 一种打印机热敏头定位装置
CN218315893U (zh) 凹字打印设备
US7303165B2 (en) Roll positioning mechanism
JP3555060B2 (ja) ロータリダイカッタの刃物取付台固定装置
CN220517837U (zh) 一种打印介质的驱动机构
JP4658697B2 (ja) プリンター装置のフレーム取付け構造
CN212796286U (zh) 介质输送装置以及记录装置
CN212654052U (zh) 可对pet电池热缩套管双面印刷的印刷机
KR100395526B1 (ko) 잉크젯 프린터의 캐리지 얼라인먼트 조정장치
US4150277A (en) Electrode roll arrangement for a resistance roll-welding machine
CN214267001U (zh) 一种高适应性胶印机
JP2006026955A (ja) 画像形成装置
CN219188883U (zh) 一种转向节的加工装置

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB LI

17P Request for examination filed

Effective date: 19860308

17Q First examination report despatched

Effective date: 19870529

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HONEYWELL BULL ITALIA S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

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

Ref country code: LI

Effective date: 19880511

Ref country code: CH

Effective date: 19880511

REF Corresponds to:

Ref document number: 3471046

Country of ref document: DE

Date of ref document: 19880616

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: FR

Payment date: 19920226

Year of fee payment: 9

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

Ref country code: GB

Payment date: 19930215

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19930219

Year of fee payment: 10

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

Ref country code: FR

Effective date: 19931029

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: 19940225

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

Effective date: 19940225

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

Ref country code: DE

Effective date: 19941101