JPS5796876A - Device for energizing heat sensitive recording - Google Patents

Device for energizing heat sensitive recording

Info

Publication number
JPS5796876A
JPS5796876A JP17342680A JP17342680A JPS5796876A JP S5796876 A JPS5796876 A JP S5796876A JP 17342680 A JP17342680 A JP 17342680A JP 17342680 A JP17342680 A JP 17342680A JP S5796876 A JPS5796876 A JP S5796876A
Authority
JP
Japan
Prior art keywords
pulses
recording
output
period
during
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.)
Pending
Application number
JP17342680A
Other languages
Japanese (ja)
Inventor
Shigeru Katsuragi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP17342680A priority Critical patent/JPS5796876A/en
Publication of JPS5796876A publication Critical patent/JPS5796876A/en
Pending legal-status Critical Current

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
    • B41J2/365—Print density control by compensation for variation in temperature
    • 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

Landscapes

  • Electronic Switches (AREA)
  • Facsimile Heads (AREA)

Abstract

PURPOSE:To prevent excessive heat accumulator by estimating the accumulated heat of the thermal head due to recording energization in advance and controlling the amount of heating of heating elements by feed-forward control. CONSTITUTION:If pulses A do not arrive during the period of constant period pulses B, i.e., if the time interval of a recording command becomes long, the output is inverted from 0 to 1, and the output of pulses to a gate circuit 72 is commanded to a timer 71a. During the period the pulses A are coming during the period of the cnstant pulses B, i.e., the time interval of the recording command is short, the output is 0, and the output of the pulses from a specified timer is commanded to the gate circuit 72. Thus the current conducting time of 1 pulse in the continuous recording and intermittent recording is determined, and the current conduction control during which excessive temperature rise in heating elements due to the increase in the accumulated heat in the thermal head is performed. Since this is the feed forward control by which current conducting energy is controlled based on the recording or non-recording state immediately before, the excessive heating of the thermal head and the heating elements can be prevented beforehand.
JP17342680A 1980-12-09 1980-12-09 Device for energizing heat sensitive recording Pending JPS5796876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17342680A JPS5796876A (en) 1980-12-09 1980-12-09 Device for energizing heat sensitive recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17342680A JPS5796876A (en) 1980-12-09 1980-12-09 Device for energizing heat sensitive recording

Publications (1)

Publication Number Publication Date
JPS5796876A true JPS5796876A (en) 1982-06-16

Family

ID=15960227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17342680A Pending JPS5796876A (en) 1980-12-09 1980-12-09 Device for energizing heat sensitive recording

Country Status (1)

Country Link
JP (1) JPS5796876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8452167B2 (en) 2006-08-25 2013-05-28 Inergy Automotive Systems Research (S.A.) Line equipped with a coupling having an integrated heating element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8452167B2 (en) 2006-08-25 2013-05-28 Inergy Automotive Systems Research (S.A.) Line equipped with a coupling having an integrated heating element
US8755681B2 (en) 2006-08-25 2014-06-17 Inergy Automotive Systems Research (S.A.) Line equipped with a coupling having an integrated heating element

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