IE40597B1 - Dot matrix printer - Google Patents

Dot matrix printer

Info

Publication number
IE40597B1
IE40597B1 IE273/75A IE27375A IE40597B1 IE 40597 B1 IE40597 B1 IE 40597B1 IE 273/75 A IE273/75 A IE 273/75A IE 27375 A IE27375 A IE 27375A IE 40597 B1 IE40597 B1 IE 40597B1
Authority
IE
Ireland
Prior art keywords
motor
disc
lead screw
engages
head
Prior art date
Application number
IE273/75A
Other versions
IE40597L (en
Original Assignee
N Dimensions
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 N Dimensions filed Critical N Dimensions
Publication of IE40597L publication Critical patent/IE40597L/en
Publication of IE40597B1 publication Critical patent/IE40597B1/en

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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • 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
    • B41J25/316—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with tilting motion mechanisms relative to paper surface
    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/36—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for portability, i.e. hand-held printers or laptop printers

Landscapes

  • Common Mechanisms (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Impact Printers (AREA)
  • Electronic Switches (AREA)

Abstract

1473478 Selective printing N-DIMENSIONS Inc 17 Feb 1975 [5 March 1974] 6689/75 Heading B6F [Also in Division G4] In a dot-matrix printer, a print head 18 is advanced along the print line using a lead screw 24, the head being pivotable between a position in which it engages the print medium and a follower on it engages the screw and a position in which these conditions do not hold. As disclosed, the printer is a portable, batteryoperated typewriter, actuation of any of its character keys 16 pulsing a motor 28 and a motor 52 (or solenoid), the latter rotating an arm 48 to release a chopper disc 40 for one revolution. Disc 40 is driven via gears 32, 34 from motor 28 which also drives the lead screw 24 so the lead screw is driven for one character width during the disc rotation. A bush 44 produces pulses from marks on disc 40 which drive a counter to read successive columns of the character matrix from a memory to drivers controlling heating current to a column of thinfilm resistors in the (thermal) print head 18. (There may be more than one column of resistors.) The memory is loaded from a decoder which responds to the character keys and can communicate in both directions, via FM radio, telephone line or direct line, with a computer. Another key pulses a motor 54 (or solenoid) to rotate head 18 about one (20) of its two guide rods shown so that it no longer engages the lead screw 24 whereupon a (constant tension) spring 60 returns it to the left. A paper-advance key pulses a motor 76 to advance the paper using a rod 78, disc 80, a one-way clutch, a (return) coil spring and another one-way clutch. [GB1473478A]
IE273/75A 1974-03-05 1975-02-12 Dot matrix printer IE40597B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44819274A 1974-03-05 1974-03-05

Publications (2)

Publication Number Publication Date
IE40597L IE40597L (en) 1975-09-05
IE40597B1 true IE40597B1 (en) 1979-07-04

Family

ID=23779360

Family Applications (1)

Application Number Title Priority Date Filing Date
IE273/75A IE40597B1 (en) 1974-03-05 1975-02-12 Dot matrix printer

Country Status (13)

Country Link
JP (1) JPS50123350A (en)
AT (1) AT347722B (en)
BE (1) BE826251A (en)
CA (1) CA1025775A (en)
CH (1) CH577717A5 (en)
DD (1) DD116952A5 (en)
DE (1) DE2506662C3 (en)
FR (1) FR2263110B1 (en)
GB (1) GB1473478A (en)
IE (1) IE40597B1 (en)
IT (1) IT1029817B (en)
NL (1) NL7502515A (en)
SE (1) SE403665B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2617562C3 (en) * 1976-04-22 1978-12-14 Philips Patentverwaltung Gmbh, 2000 Hamburg Clamping bearing for at least one axis used to guide movable parts
DE2618001C3 (en) * 1976-04-24 1982-02-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Unit for guiding a print head parallel to the platen in accounting and calculating machines
IT1118078B (en) * 1977-05-04 1986-02-24 Olivetti & Co Spa IMPACT IMPROVEMENTS ON A PRINTER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3509980A (en) * 1968-03-12 1970-05-05 Ncr Co Thermal printer
JPS4911517A (en) * 1972-05-31 1974-02-01

Also Published As

Publication number Publication date
BE826251A (en) 1975-06-30
DE2506662B2 (en) 1978-08-10
CA1025775A (en) 1978-02-07
ATA162975A (en) 1978-05-15
CH577717A5 (en) 1976-07-15
DE2506662A1 (en) 1975-09-11
GB1473478A (en) 1977-05-11
SE403665B (en) 1978-08-28
JPS50123350A (en) 1975-09-27
FR2263110B1 (en) 1979-10-19
SE7501425L (en) 1975-09-08
DE2506662C3 (en) 1979-03-29
NL7502515A (en) 1975-09-09
IT1029817B (en) 1979-03-20
FR2263110A1 (en) 1975-10-03
AT347722B (en) 1979-01-10
IE40597L (en) 1975-09-05
DD116952A5 (en) 1975-12-12
AU7849775A (en) 1976-08-26

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