US3851144A - Feedback fuser for 730s - Google Patents

Feedback fuser for 730s Download PDF

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Publication number
US3851144A
US3851144A US00363440A US36344073A US3851144A US 3851144 A US3851144 A US 3851144A US 00363440 A US00363440 A US 00363440A US 36344073 A US36344073 A US 36344073A US 3851144 A US3851144 A US 3851144A
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US
United States
Prior art keywords
documents
fuser
temperature
fuser assembly
accordance
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 - Lifetime
Application number
US00363440A
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English (en)
Inventor
M Hutner
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.)
Videojet Technologies Inc
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
Priority to US00363440A priority Critical patent/US3851144A/en
Priority to NL7401529A priority patent/NL7401529A/xx
Priority to CA196,149A priority patent/CA1053317A/en
Priority to DE2417877A priority patent/DE2417877C3/de
Priority to CH532474A priority patent/CH579294A5/xx
Priority to IT23089/74A priority patent/IT1012745B/it
Priority to JP49057761A priority patent/JPS5021735A/ja
Priority to GB2325074A priority patent/GB1450841A/en
Application granted granted Critical
Publication of US3851144A publication Critical patent/US3851144A/en
Assigned to VIDEOJET SYSTEMS INTERNATIONAL, INC., ELK GROVE VILLAGE, ILLINOIS, A DE. CORP. reassignment VIDEOJET SYSTEMS INTERNATIONAL, INC., ELK GROVE VILLAGE, ILLINOIS, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: XEROX CORPORATION, A CORP. OF N.Y.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • a further object of the present invention is to provide a method of fusing electroscopic particles to successive portions of a support base intermittently moving through a fuser assembly, and apparatus therefor.
  • the developed electrostatic image is transported by the photosensitive drum 20 to a transfer station E located at a point of tangency on the photosensitive drum whereat a support base 9 is intermittently moved at a speed in synchronism with the moving drum in order to accomplish transfer of the developed image.
  • the support base 9 is here depicted as a web comprised of suitable material such as paper, plastic or the like, that it is driven from a supply 13 to selective transfer mechanism 25 through fuser assemvly 40, about strip driving means 16 and into a strip receiving tray 14. It will be appreciated that the support base 9 in addition to comprising paper and plastic in the form of a web, the support base 9 may also comprise a continuous strip of paper having gummed labels supported thereon which can be readily removed from the web subsequent to the reproducing operation.
  • variable supply 100 is utilized to regulate the heat radiated by heating element 105
  • the heating element 105 is maintained at a quiescent low of energization to radiate the amount of heat that is not quite sufficient to fuse electroscopic material to a support base. Nevertheless, this quiescent energization enables the radiant energy emitted by the heating element to be rapidly increased to the proper fusing level when the voltage applied to the heating element is increased.
  • adjustable resistance means 106 is connected in parallel with resistance means 102, a quiescent threshold level is applied to trigger input 101a bi-directional current conducting means 101. As illustrated in FIG.
  • this quiescent threshold level renders the bi-directional current conducting means conducted at a point on the positive half cycle of the AC voltage supplied to the bi-directional current conducting means defined by the intersection of broken line 121a and AC wave form 120.
  • the bi-directional current conducting means 101 is rendered nonconductive at the conclusion of a positive half cycle. However, at a'point on the negative half cycle defined by the intersection of broken line l21b and AC wave form 120, the bidirectional current conducting means is again rendered conductive. It is appreciated that when the quiescent threshold level is applied to triggering point 1010 of bi-directional current conducting means 101, the bi-directional current conducting means is rendered conductive for onlya relatively small portion of an AC cycle.
  • the gating means 212 may comprise a conventional OR gate whereby a binary l is produced at the output terminal thereof when a binary l is supplied to any one of the input terminals thereof.
  • a binary 9 l is represented by a positive DC potential and a binary is represented by ground potential.
  • Gating means similar in function to gating means 207 comprises coincidence means 213 which is adapted to produce an output signal in response to the application of a predetermined signal at each of its two input terminals, one of which is the terminal 208 from which is derived a start-up signal and the other of which is a termionly seven stages have been designated as only these nal 214 from which is derived a signalfrom a thermistor amplifier 215 indicative of a middle termperature range in the fuser assembly as sensed by the thermistor 203.
  • Storage means 200 may, therefore, comprise a portion of the aforementioned shift register means having a first stage corresponding to the predetermined position and including a plurality of succeeding stages.
  • the storage means 200 may comprise an individual plural stage shift register means having a first stage corresponding to the aforementioned predetermined position and including a plurality of succeeding stages.
  • the gating means 220 is adapted to produce a signal of 332 milliseconds duration, two cycles before the image is transferred from the drum to the web 9 if six nonselects occur with low temperature range in the fuser chamber. Such expiration corresponds to an elapsed time since the previous energization of the heating elements included in the fuser assembly 40 and that the fuser assembly has cooled to a temperature requiring an energization thereof for a duration longer than the minimum duration to attain a suitable accumulation of radiant energy in the assembly.
  • the gating means 221 is provided with input terminals coupled to the second through fifth stages of the storage means 200 along with the terminal 223 which as noted is coupled to the output of the gating means 210.
  • the input terminal 221 coupled to the second stage of the storage means 200 is via an inverter means 226 inverter means 224 and 225. It can be seen from a consideration of the input terminals to the gating means 221 that an output pulse is provided at output terminal 237 is three non-selects occur with the fuser chamber in the low temperature range. It can be further seen that the occurrence of such a signal takes place one cycle before transfer of the image from the photoreceptor drum to the web 9 takes place. The duration of the signal derived on output terminal 227 is 332 milliseconds.
  • the successive stages of the storage means 200 are labeled 2, 1, 0, 1, 2, 3 and 4 and therefore correspond to, in the case of the first stage, a point in time two cycles prior to transfer of an image from the photoreceptor drum to the web 9.
  • the second stage of the storage means corresponds to a point in time one cycle prior to such transfer while the third stage corresponds to and coincides with transfer.
  • the stages four through 7 correspond to points in time subsequent to transfer of an image and correspond to one, two, three or four cycles after such transfer.
  • the gating device 213 with coincident signals via terminal inputs 208 and 214 would produce an output signal for triggering a l.l second one-shot multivibrator to provide an input to the gating device 212 for supplying energy to the coil 205 from the output of the gating means 212 via the driver means 206 actuated thereby. It should be borne .in mind that the foregoing has taken place prior to any card code information being sensed.
  • the thermistor sensor signal is divided into three temperature ranges: below 109F; between 109 and 150F; and over 150F.
  • the shift register-select pattern is divided into three groups: selects which are preceeded by other selects within the last three machine cycles (one label per cycle), selects preceeded by at least three non-selects, and selects, preceeded by at least six non-selects.
  • the shift register signals are combined to form four basic output signals as follows: AND gating device 220 provides an output for 332 milliseconds if a select is pre ceeded by six non-selects and the fuser temperature is in the low range. This output occurs two cycles before the paper starts moving;
  • Gatingmeans22l provides an output for 332 milliseconds if a select is preceeded by three, nonselects and the fuser temperature is in the low range. This output occurs one cycle before the paper starts'moving; 1
  • Gating means 228 provides an output for 332 milliseconds if a select occurs in the cycle that the paper is moving and the temperature is in the low or mid temperature range;
  • said storage means comprises shift register means including an input terminal to which is applied said signals representing documents to be reproduced and means for continually shifting on a periodic basis each signal applied to said input terminal through said shift register means whereby the relative positions occupied by signals within the shift register means as a function of the history of those documents both selected and nonselected for reproduction.
  • Apparatus according to claim 13 including start up signal means for generating a signal when the xerographic apparatus commences operation;
  • said decoding means comprises gating means responsive to start-up signal means and the temperature sensed by said temperature sensing means for actuating said switch means fora first pre-determined period of time when said fuser apparatus is at a first temperature level.
  • said decoding means comprises second gating means responsive to said start-up signal means and the temperature sensed by said sensing means for actuating said switch means for a longer pre-determined period of time when said fuser apparatus is at a second temperature level.
US00363440A 1973-05-24 1973-05-24 Feedback fuser for 730s Expired - Lifetime US3851144A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00363440A US3851144A (en) 1973-05-24 1973-05-24 Feedback fuser for 730s
NL7401529A NL7401529A (ja) 1973-05-24 1974-02-04
CA196,149A CA1053317A (en) 1973-05-24 1974-03-27 Selective fuser for electrophotographic copier
DE2417877A DE2417877C3 (de) 1973-05-24 1974-04-11 Steuereinrichtung fur die Schmelzfixiereinrichtung eines elektrofotografischen Kopiergeräts
CH532474A CH579294A5 (ja) 1973-05-24 1974-04-17
IT23089/74A IT1012745B (it) 1973-05-24 1974-05-22 Apparecchiatura e procedimento per regolare la fusione di particelle elettroscopiche di fotocopie
JP49057761A JPS5021735A (ja) 1973-05-24 1974-05-22
GB2325074A GB1450841A (en) 1973-05-24 1974-05-24 Regulating apparatus for fusing electroscopic particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00363440A US3851144A (en) 1973-05-24 1973-05-24 Feedback fuser for 730s

Publications (1)

Publication Number Publication Date
US3851144A true US3851144A (en) 1974-11-26

Family

ID=23430216

Family Applications (1)

Application Number Title Priority Date Filing Date
US00363440A Expired - Lifetime US3851144A (en) 1973-05-24 1973-05-24 Feedback fuser for 730s

Country Status (8)

Country Link
US (1) US3851144A (ja)
JP (1) JPS5021735A (ja)
CA (1) CA1053317A (ja)
CH (1) CH579294A5 (ja)
DE (1) DE2417877C3 (ja)
GB (1) GB1450841A (ja)
IT (1) IT1012745B (ja)
NL (1) NL7401529A (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105324A (en) * 1975-10-14 1978-08-08 Eastman Kodak Company Electrophotographic apparatus having compensation for rest-run performance variations
US4162847A (en) * 1977-10-06 1979-07-31 International Business Machines Corporation Hot roll fuser early closure inhibitor
US4218499A (en) * 1976-07-30 1980-08-19 Canon Kabushiki Kaisha Method of fixing heat-fusible toner images formed on a web
EP0042630A1 (en) * 1980-04-09 1981-12-30 Océ-Nederland B.V. Electrographic apparatus
US4603245A (en) * 1982-08-23 1986-07-29 Canon Kabushiki Kaisha Temperature control apparatus
US4822977A (en) * 1987-04-20 1989-04-18 Xerox Corporation Paper temperature measurement fuser control
EP0345034A2 (en) * 1988-05-31 1989-12-06 Sharp Kabushiki Kaisha Toner image fixing apparatus for an image forming machine
US5303015A (en) * 1988-12-15 1994-04-12 Canon Kabushiki Kaisha Recording apparatus for conserving energy
US5321478A (en) * 1992-03-31 1994-06-14 Canon Kabushiki Kaisha Image forming apparatus which can discriminate frequency of image forming operations
US5406361A (en) * 1992-08-18 1995-04-11 Samsung Electronics Co., Ltd. Circuit for controlling temperature of a fuser unit in a laser printer
US7189949B1 (en) * 2005-09-27 2007-03-13 Lexmark International, Inc. Power control system and method for regulating power provided to a heating device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566826U (ja) * 1978-11-01 1980-05-08
JPS55146466A (en) * 1979-05-01 1980-11-14 Dainippon Screen Mfg Co Ltd Fixing heater controller of electrophotographic copier
JPS6063261U (ja) * 1983-10-07 1985-05-02 トヨタ自動車株式会社 シ−トバツク構造
JPS61129347A (ja) * 1984-11-26 1986-06-17 Toyoda Autom Loom Works Ltd 自動車の座席

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772497A (en) * 1971-03-03 1973-11-13 D Gray Fuser for electrostatic image

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772497A (en) * 1971-03-03 1973-11-13 D Gray Fuser for electrostatic image

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105324A (en) * 1975-10-14 1978-08-08 Eastman Kodak Company Electrophotographic apparatus having compensation for rest-run performance variations
US4218499A (en) * 1976-07-30 1980-08-19 Canon Kabushiki Kaisha Method of fixing heat-fusible toner images formed on a web
US4162847A (en) * 1977-10-06 1979-07-31 International Business Machines Corporation Hot roll fuser early closure inhibitor
EP0042630A1 (en) * 1980-04-09 1981-12-30 Océ-Nederland B.V. Electrographic apparatus
US4603245A (en) * 1982-08-23 1986-07-29 Canon Kabushiki Kaisha Temperature control apparatus
US4822977A (en) * 1987-04-20 1989-04-18 Xerox Corporation Paper temperature measurement fuser control
EP0345034A2 (en) * 1988-05-31 1989-12-06 Sharp Kabushiki Kaisha Toner image fixing apparatus for an image forming machine
EP0345034A3 (en) * 1988-05-31 1990-02-07 Sharp Kabushiki Kaisha Toner image fixing apparatus for an image forming machine
US5303015A (en) * 1988-12-15 1994-04-12 Canon Kabushiki Kaisha Recording apparatus for conserving energy
US5321478A (en) * 1992-03-31 1994-06-14 Canon Kabushiki Kaisha Image forming apparatus which can discriminate frequency of image forming operations
US5406361A (en) * 1992-08-18 1995-04-11 Samsung Electronics Co., Ltd. Circuit for controlling temperature of a fuser unit in a laser printer
US7189949B1 (en) * 2005-09-27 2007-03-13 Lexmark International, Inc. Power control system and method for regulating power provided to a heating device
US20070068926A1 (en) * 2005-09-27 2007-03-29 Lexmark International, Inc. Power control system and method for regulating power provided to a heating device

Also Published As

Publication number Publication date
DE2417877C3 (de) 1979-10-31
JPS5021735A (ja) 1975-03-07
GB1450841A (en) 1976-09-29
NL7401529A (ja) 1974-04-25
CA1053317A (en) 1979-04-24
DE2417877A1 (de) 1974-12-12
DE2417877B2 (de) 1979-03-08
IT1012745B (it) 1977-03-10
CH579294A5 (ja) 1976-08-31

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Date Code Title Description
AS Assignment

Owner name: VIDEOJET SYSTEMS INTERNATIONAL, INC., ELK GROVE VI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:XEROX CORPORATION, A CORP. OF N.Y.;REEL/FRAME:004945/0373

Effective date: 19880608