ATE108728T1 - Vorrichtung und verfahren zur kontrastregelung für einen thermodruckkopf. - Google Patents

Vorrichtung und verfahren zur kontrastregelung für einen thermodruckkopf.

Info

Publication number
ATE108728T1
ATE108728T1 AT90403412T AT90403412T ATE108728T1 AT E108728 T1 ATE108728 T1 AT E108728T1 AT 90403412 T AT90403412 T AT 90403412T AT 90403412 T AT90403412 T AT 90403412T AT E108728 T1 ATE108728 T1 AT E108728T1
Authority
AT
Austria
Prior art keywords
print head
thermal print
contrast control
printer
elements
Prior art date
Application number
AT90403412T
Other languages
English (en)
Inventor
Christian Lavergne
Original Assignee
Sagem
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 Sagem filed Critical Sagem
Application granted granted Critical
Publication of ATE108728T1 publication Critical patent/ATE108728T1/de

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
    • B41J2/35—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 providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/36—Print density control

Landscapes

  • Electronic Switches (AREA)
  • Facsimile Heads (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
AT90403412T 1989-12-07 1990-11-30 Vorrichtung und verfahren zur kontrastregelung für einen thermodruckkopf. ATE108728T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8916181A FR2655592B1 (fr) 1989-12-07 1989-12-07 Procede de controle du contraste d'un support d'impression produit par une tete thermique d'ecriture et systeme d'impression mettant en óoeuvre le procede.

Publications (1)

Publication Number Publication Date
ATE108728T1 true ATE108728T1 (de) 1994-08-15

Family

ID=9388251

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90403412T ATE108728T1 (de) 1989-12-07 1990-11-30 Vorrichtung und verfahren zur kontrastregelung für einen thermodruckkopf.

Country Status (6)

Country Link
EP (1) EP0432024B1 (de)
AT (1) ATE108728T1 (de)
DE (1) DE69010859T2 (de)
DK (1) DK0432024T3 (de)
ES (1) ES2060113T3 (de)
FR (1) FR2655592B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975707A (en) * 1970-04-13 1976-08-17 Canon Kabushiki Kaisha Device for controlling the density of printing characters
JPS6327271A (ja) * 1986-07-18 1988-02-04 Shinko Electric Co Ltd 熱転写式プリンタ
JPS6318259U (de) * 1986-07-22 1988-02-06
JPH0632943B2 (ja) * 1986-10-20 1994-05-02 株式会社日立製作所 熱転写プリンタ

Also Published As

Publication number Publication date
EP0432024A1 (de) 1991-06-12
DE69010859T2 (de) 1995-03-09
FR2655592A1 (fr) 1991-06-14
ES2060113T3 (es) 1994-11-16
FR2655592B1 (fr) 1995-04-07
DK0432024T3 (da) 1994-11-21
EP0432024B1 (de) 1994-07-20
DE69010859D1 (de) 1994-08-25

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee