WO1989009694A1 - Appareil d'impression - Google Patents

Appareil d'impression Download PDF

Info

Publication number
WO1989009694A1
WO1989009694A1 PCT/US1989/001113 US8901113W WO8909694A1 WO 1989009694 A1 WO1989009694 A1 WO 1989009694A1 US 8901113 W US8901113 W US 8901113W WO 8909694 A1 WO8909694 A1 WO 8909694A1
Authority
WO
WIPO (PCT)
Prior art keywords
printed circuit
carriage
printing apparatus
circuit member
print head
Prior art date
Application number
PCT/US1989/001113
Other languages
English (en)
Inventor
James R. Ii Del Signore
Robert A. Brull
Alan H. Walker
Original Assignee
Ncr Corporation
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 Ncr Corporation filed Critical Ncr Corporation
Publication of WO1989009694A1 publication Critical patent/WO1989009694A1/fr

Links

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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

Definitions

  • the present invention relates to a printing apparatus and more particularly, but not exclusively, to a printing apparatus employing a dot matrix print head supported on a movable carriage which also supports circuit means for providing electrical power to the print head.
  • the flexible cable is designed to have the source end stationary and to provide sufficient length of cable so that when the print head moves across the printer, a portion of the cable moves with the print head.
  • U.S. Patent No. 4,518,269 discloses a printer employing a print head having a flexible cable pressed between the core frame and the nose member of the print head.
  • the present invention provides a printing apparatus including a print head mounted on a carriage movable in a transverse direction, a first printed circuit member affixed to and extending from said print head, said first printed circuit member being coupled to flexible cable means for providing electrical power to said print head, characterized by a second printed circuit member supported by said carriage, said second printed circuit member having receiving means secured thereto for receiving one end of said first printed circuit member thereby forming an operable coupling between said first and second printed circuit members, and further characterized in that said flexible cable means is affixed at one end thereof to said second printed circuit member.
  • the flexible cable is connected directly to a separate printed circuit member supported on the carriage rather than to a printed circuit member forming part of the print head, it is possible to employ a shorter length of flexible cable and to employ simple means for guiding the cable, thereby reducing cost. Also, since the printed circuit member forming part of the print head is not connected directly to the cable, it is possible to use a relatively thin and inexpensive printed circuit card as this member.
  • Fig. 1 is a side elevational view of the print head and carriage assembly in accordance with one embodiment of the present invention
  • Fig. 2 is an enlarged top plan view of the print head carriage with the print head thereon;
  • Fig. 3 is an elevational view taken on the line 3-3 of Fig. 1;
  • Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2?
  • Fig. 5 is a view illustrating the printed circuit board with the conductor runs embedded therein.
  • Fig. 6 is a perspective view of a printer.
  • a printer in accordance with one embodiment of the present invention may be of a multi-function type that can accommodate a receipt, a journal and a slip or form which form consists of one or more parts.
  • the printer can be set in one of five different modes of operation which includes printing a journal only, printing a receipt only, printing a receipt and a journal, printing a slip or form only, or printing a slip or form and a journal.
  • Fig. 1 shows a side elevational view of a print head carriage 20 supporting a print head 22.
  • the print head 22 is shown in phantom lines to indicate that part of the print head assembly which is removable or easily replaced.
  • the carriage 20 includes bearing means in the form of a pair of front bearings 24 and 26 (Fig. 2) that are supported by and move along a guide rail or supporting shaft 28.
  • a rear bearing 30 provides a journal and support for a guide rail or supporting shaft 32 that is parallel to the shaft 28.
  • the guide rail or supporting shaft 28 is supported in suitable manner from side frames of a printer 29 (Fig. 6).
  • the shaft 32 is likewise supported from side frames of the printer.
  • the print head carriage 20 is a molded part which may be made of Lexan material and is of unitary construction and of a complex shape to accommodate the many functions that the carriage is required to perform.
  • the carriage includes a nose or front portion 34 of generally plate-like shape to support the nose portion 36 of the print head 22.
  • the nose portion 34 of the carriage includes a pair of spaced hubs 38 and 40 for receiving and securing the print head 22.
  • a projection 42 at the front of the nose portion 34 of the carriage 20 serves to guide the print head 22 when installing the print head and to maintain the nose portion 36 in position on the carriage.
  • An upright plate portion 44 of the carriage 20 supports the nose portion 34 and connects a pair of bridging portions 46 and 48 that are integral with the front bearings 24 and 26.
  • the bridging portions 46 and 48 are integral with and connect with a generally horizontal plate portion 50, the plate portion providing an opening 52 therein between the bridging portions 46 and 48 for receiving a lower portion of the print head 22.
  • the carriage 20 also includes a pair of downwardly extending arms 54 and 56 (Fig. 3) which support a printer circuit board 58 (Fig. 5) that provides electrical power to the print head 22.
  • the carriage 20 has a recess 60 formed therein at a location just rearward of the bearing portion 26 for receiving an end portion 62 (Fig. 5) of the printed circuit board 58.
  • the other end 64 has recesses or cutouts 66 and 68 for engagement by tip portions or snaps 70 and 71 which support the end 64 of the board 58.
  • the printed circuit board 58 includes a receptacle or like device 72 secured to the top of the board for receiving a printed circuit card 76 of the print head 22.
  • the receptacle 72 is permanently affixed to the end 62 of the board 58.
  • the printed circuit card 76 is sandwiched between the nose portion 36 and the coil portion 78 of the print head 22.
  • the carriage 20 has a plurality of lugs or guides 80 integral with the plate portion 50 and spaced thereacross for the purpose of routing a flat, flexible cable 82 (Figs. 1, 2 and 4).
  • the cable 82 is also permanently affixed to the printed circuit board 58, as seen in Fig. 4, and is trained through a passageway formed by a clamp or like element 84 and a guide or like element 86, both integrally formed or molded as a part of the carriage 20.
  • the cable 82 is trained in a suitable path from the top of the plate portion 50 to a source 85 or like connection.
  • Fig. 5 shows the printed circuit board 58 with the layout and routing of the conductors or runs 88 which are embedded in the substate of the board.
  • the conductors 88 are sufficient in number and arranged to accommodate a nine wire dot matrix print head and include a pair of common conductors.
  • the illustrated runs 88 terminating at the right side of the portion 62 of the board 58 are provided for accommodating a nine wire print head.
  • the printed circuit board 58 is placed into the recess 60 of the carriage while the end 64 is held in a lowered position (Fig. 1).
  • the board 58 is then raised up and the edges of the board, at cutouts 66 and 68 thereof (Fig. 5), engage the angled surfaces of the tip portions or snaps 70 and 72.
  • the cantilever- type arms 54 and 56 are sprung outwardly to receive the printed circuit board 58 and then are sprung back with a snap action to contain the board in a secure manner.
  • the receptacle 72 is thereby positioned to receive the printed circuit card 76 when the print head 22 is lowered into place between the hubs 38 and 40 and onto the plate portion 34 of the carriage 20 for securing the print head.

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

Cette invention concerne un appareil d'impression dont la tête d'impression (22) comporte une carte de circuit imprimé autonome (76) dirigée vers le bas. La tête d'impression (22) est soutenue par un chariot (20) qui supporte également, en-dessous du chariot, une plaquette de circuit imprimé (58) comportant un boîtier (72) qui est positionné pour recevoir la carte de circuit imprimé (76). Le chariot (20) comporte également des guides (80) servant à guider un câble (82) plat et flexible le long d'un chemin menant de la plaquette de circuit imprimé (76) à une source d'énergie.
PCT/US1989/001113 1988-04-04 1989-03-21 Appareil d'impression WO1989009694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17695788A 1988-04-04 1988-04-04
US176,957 1988-04-04

Publications (1)

Publication Number Publication Date
WO1989009694A1 true WO1989009694A1 (fr) 1989-10-19

Family

ID=22646595

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/001113 WO1989009694A1 (fr) 1988-04-04 1989-03-21 Appareil d'impression

Country Status (4)

Country Link
EP (1) EP0362356B1 (fr)
JP (1) JP2772565B2 (fr)
DE (1) DE68906629T2 (fr)
WO (1) WO1989009694A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439777A (en) * 1980-12-23 1984-03-27 Ing. C. Olivetti & C., S.P.A. Thermal serial dot printer
US4555715A (en) * 1983-07-08 1985-11-26 Societe D'applications Generales D'electricite Et De Mecaniques Sagem Thermal printhead mounting control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439777A (en) * 1980-12-23 1984-03-27 Ing. C. Olivetti & C., S.P.A. Thermal serial dot printer
US4555715A (en) * 1983-07-08 1985-11-26 Societe D'applications Generales D'electricite Et De Mecaniques Sagem Thermal printhead mounting control

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 10, No. 100, (M-470), (2157), 16 April 1986; & JP,A,60 234 860 (HIROSHI OGAWA et al.), 21 November 1985. *
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 164, (M-395), (1887), 10 July 1985; & JP,A,60 040 283 (YASUSHI OKAMURA), 03 February 1985. *

Also Published As

Publication number Publication date
EP0362356B1 (fr) 1993-05-19
JP2772565B2 (ja) 1998-07-02
JPH02503777A (ja) 1990-11-08
DE68906629D1 (de) 1993-06-24
DE68906629T2 (de) 1994-01-05
EP0362356A1 (fr) 1990-04-11

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