GB1447679A - Voltage controller - Google Patents

Voltage controller

Info

Publication number
GB1447679A
GB1447679A GB5622673A GB5622673A GB1447679A GB 1447679 A GB1447679 A GB 1447679A GB 5622673 A GB5622673 A GB 5622673A GB 5622673 A GB5622673 A GB 5622673A GB 1447679 A GB1447679 A GB 1447679A
Authority
GB
United Kingdom
Prior art keywords
voltage
capacitor
predetermined
fuser
rectifiers
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.)
Expired
Application number
GB5622673A
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of GB1447679A publication Critical patent/GB1447679A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat

Abstract

1447679 Automatic voltage control XEROX CORP 4 Dec 1973 [6 Dec 1972] 56226/73 Heading G2R A circuit for supplying a regulated alternating voltage to a heater for a fuser in an electrostatic copier, includes a device which cuts off the voltage supply for a predetermined time interval when the heater voltage reaches a predetermined level. As shown in Fig. 3, a fuser 40 is heated by a lamp 44 connected in series with controlled rectifiers 46. The voltage across the lamp is sensed by a transformer 51 which charges a capacitor 60 until a predetermined voltage level is reached at one input 65 of a switching amplifier 66. The predetermined voltage is set by a reference voltage on line 58. When this level is reached, the output of the amplifier turns off the rectifiers 46 for a time interval which is determined by the time constant of capacitor 70 and associated resistors. At the end of this interval, the amplifier 66 switches to its other state and the rectifiers 46 again become conductive. In the meantime, capacitor 60 has discharged through a resistor 62, so that the regulating cycle begins again. The fuser housing temperature may be monitored by a thermistor (45), Fig. 2 (not shown).
GB5622673A 1972-12-06 1973-12-04 Voltage controller Expired GB1447679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31255772A 1972-12-06 1972-12-06

Publications (1)

Publication Number Publication Date
GB1447679A true GB1447679A (en) 1976-08-25

Family

ID=23212011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5622673A Expired GB1447679A (en) 1972-12-06 1973-12-04 Voltage controller

Country Status (10)

Country Link
JP (1) JPS5413179B2 (en)
AU (1) AU6333773A (en)
BE (1) BE808310A (en)
BR (1) BR7309435D0 (en)
CA (1) CA1018585A (en)
DE (1) DE2360389A1 (en)
FR (1) FR2209956B1 (en)
GB (1) GB1447679A (en)
IT (1) IT1060110B (en)
NL (1) NL7316624A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127341A (en) * 1976-04-19 1977-10-25 Canon Inc Fixing device for copying machne for electronic photography
US4570044A (en) * 1982-04-23 1986-02-11 Sharp Kabushiki Kaisha Induction heating and fixing device for a copying machine
DE3444174A1 (en) * 1983-12-05 1985-07-04 Sharp K.K., Osaka HEAT-FIXING DEVICE FOR A COPIER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746495C (en) * 1938-04-24 1944-12-23 Siemens Ag Device for the delivery of constant amounts of energy to electrical consumers
US3532855A (en) * 1968-12-30 1970-10-06 Ibm Power regulating circuit for xerographic fusing apparatus

Also Published As

Publication number Publication date
DE2360389A1 (en) 1974-06-12
IT1060110B (en) 1982-07-10
AU6333773A (en) 1975-06-12
BR7309435D0 (en) 1974-09-05
BE808310A (en) 1974-03-29
FR2209956B1 (en) 1978-02-24
CA1018585A (en) 1977-10-04
NL7316624A (en) 1974-06-10
JPS5413179B2 (en) 1979-05-29
FR2209956A1 (en) 1974-07-05
JPS4990541A (en) 1974-08-29

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee