JPS5476168A - Thermal printing head - Google Patents

Thermal printing head

Info

Publication number
JPS5476168A
JPS5476168A JP14259077A JP14259077A JPS5476168A JP S5476168 A JPS5476168 A JP S5476168A JP 14259077 A JP14259077 A JP 14259077A JP 14259077 A JP14259077 A JP 14259077A JP S5476168 A JPS5476168 A JP S5476168A
Authority
JP
Japan
Prior art keywords
resistors
heating
additional
resistance
thru
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
JP14259077A
Other languages
Japanese (ja)
Inventor
Tsutomu Nomoto
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP14259077A priority Critical patent/JPS5476168A/en
Publication of JPS5476168A publication Critical patent/JPS5476168A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make possible minimizing the change in heating resistance and the effect of the variations thereof on the applied power of heating elements by series connecting additional resistors having resistance values more than 0.15 times the resistance values of heating resistors to said resistors.
CONSTITUTION: As pulses are supplied between selected conductors, e.g., 121 and 122, 125 and 126, heating resistors 101, 103 evolve heat to obtain picture elements. At this time, additional resistors 111 thru 118 which do not contribute to color formation are inserted and connected respectively to the heating resistors 101 thru 104 via conductors 121 thru 128. When the individual resistors are attached to a group of heating resistors, the relations of the change rates of the heating resistor values and the change rates of the applied power of the heating elements are indicated by n=(additional resistor resistance value)/(heating element resistance value). The figure reveals that additional resistance corresponding to n≥0.15 is required to keep the variations of the applied power within ±10%, thus by providing the additional resistors and suitably setting the value of n, the problems of uneven densities, deterioration acceleration, etc. may be solved.
COPYRIGHT: (C)1979,JPO&Japio
JP14259077A 1977-11-30 1977-11-30 Thermal printing head Pending JPS5476168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14259077A JPS5476168A (en) 1977-11-30 1977-11-30 Thermal printing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14259077A JPS5476168A (en) 1977-11-30 1977-11-30 Thermal printing head

Publications (1)

Publication Number Publication Date
JPS5476168A true JPS5476168A (en) 1979-06-18

Family

ID=15318836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14259077A Pending JPS5476168A (en) 1977-11-30 1977-11-30 Thermal printing head

Country Status (1)

Country Link
JP (1) JPS5476168A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281179A (en) * 1985-03-15 1986-12-11 ミネソタ　マイニング　アンド　マニュファクチュアリング　コンパニ− Pressure-sensitive adhesive tape
JPS62168824U (en) * 1986-04-17 1987-10-26

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946749A (en) * 1972-09-07 1974-05-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946749A (en) * 1972-09-07 1974-05-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281179A (en) * 1985-03-15 1986-12-11 ミネソタ　マイニング　アンド　マニュファクチュアリング　コンパニ− Pressure-sensitive adhesive tape
JPS62168824U (en) * 1986-04-17 1987-10-26

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