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6496666 |
Image forming apparatus and method having an improved heating mechanism in fixing device
A fixing device having an endless fixing belt configured to convey a sheet-like medium on which a toner image is to be fixed, heating and fixing rollers having the fixing belt wound thereon, and a...
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6490423 |
Method of operating a xerographic fusing apparatus with multiple heating elements
When powering up a xerographic fusing apparatus with two parallel lamps, power is applied to each lamp in a stair-step fashion, in which incremental increases in applied power for each lamp are...
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6487381 |
Fixing apparatus in which heating conditions can be changed in accordance with temperature of releasing oil
The present invention provides a fixing apparatus which has a fixing member for fixing an unfixed image onto a recording material, releasing agent applying device for applying a releasing agent to...
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6466751 |
Image forming apparatus having a controller for controlling paper feed intervals
An image forming apparatus for forming an image on paper has a controller for changing paper feed intervals of a feeding device based on a mode set by a setting device. The controller may stop the...
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6453130 |
Fusing methods and apparatus for image-producing devices
The invention includes apparatus and methods for fusing an image to a medium in conjunction with the use of an image-producing device. The image is formed by a substance which is applied to the...
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6449445 |
Image heating apparatus with time constant setting means
An image heating apparatus including a heater, a power supply for supplying electric power to the heater, and a time constant setting circuit for setting a time constant when the power supply...
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6438334 |
Image output apparatus and control method therefor
An image output apparatus capable of preventing occurrence of quality degradation problem due to fixing failure such as fixing offset at a low cost, by rotating fixing rollers at timing other than...
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6430381 |
Thermal fixing system for recording media of a printer or copier device that are printed on one or both sides
In a thermal fixing system for fixing toner images on the front side of a recording medium in an electrographic printer or copier device, the back side of the recording medium can already have a...
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6420685 |
Control of electrical heater to reduce flicker
A control system for reducing flicker in an electrical resistance heater comprising: a source of AC (alternating current) current for supplying AC current to an electrical resistance heater; a...
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6411786 |
Toner image fixing device using a parking agent including a volatile odor component
A toner image fixing device in which a surface temperature of a heat roller ( 1 ) is set to a temperature at which volatile odor component included in a parting agent is below a permissible value,...
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6411785 |
Fixing unit, fixing method and image forming apparatus using the same
A fixing unit prevents surface temperature of a fixing roller from becoming too high or too low and of always attains good fixing performance by employing an external heating method that makes an...
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6407366 |
Image heating apparatus having a plurality of heat generating elements
Conventionally, a thermal fixing apparatus contained in an image forming apparatus has a heater like a halogen heater or a film-heating type heater. Generally, the heater comprises a plurality of...
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6393230 |
Fixing device and image forming apparatus therewith
In a fixing apparatus for fixing a toner image on a transfer material by applying heat and pressure to the transfer material, the fixing apparatus includes: a roll-shaped rotary member for applying...
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6389247 |
Device and method for controlling fixing temperature in image forming apparatus
A fixing temperature controlling process in an image forming apparatus. The resistance of a transfer roller is detected upon request of a fixing temperature control. It is determined which of...
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6381422 |
Image forming apparatus for fine-adjusting a fixation speed of a development material in accordance with temperature control
An image forming apparatus controls a fixation speed by fine adjustment in accordance with control of a fixation temperature. Its structure comprises: a medium supply unit for supplying an image...
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6369917 |
Image forming apparatus with temperature control activated by mode switching
An image forming apparatus which can shorten a first printing time in accordance with a recording mode without increasing electric power consumption is provided. When a reception signal is absent,...
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6353719 |
Method and apparatus of controlling image fixing temperature of image forming unit in a printer
An apparatus and method of controlling the temperature of an image fixing unit having a developer fixed on a recording medium under a predetermined temperature in an image forming apparatus is...
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6343195 |
Image heating apparatus with core for guiding magnetic flux and temperature sensor to control power supply
An image heating apparatus has an endless movable member together with a coil for generating a magnetic flux and a core for guiding the magnetic flux. A backup member for forming a nip with the...
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6339211 |
Reducing a temperature differential in a fixing device
A temperature differential over a length of a fuser can result from a thermal load applied to the fuser by media having a dimension, corresponding to a longitudinal axis of the fuser, less then the...
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6336010 |
Method and apparatus for image forming capable of appropriately changing a fixing temperature
An image forming apparatus includes a fixing mechanism, a power source, a sheet transfer mechanism, and a controller. The fixing mechanism includes a heater, and fixes a toner image on a recording...
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6333490 |
Toner image fixing apparatus capable of keeping constant fixing roller temperature
A toner image fixing apparatus has a fixing roller, a pressing roller, and a heating roller. The pressing roller is normally urged toward the fixing roller for pressing a sheet with an unfixed...
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6321047 |
Image heating apparatus
An image heating apparatus has a heating member for heating an image on a recording material, a backup member for forming a nip in cooperation with the heating member, and an electric power supply...
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6321046 |
Induction heating fixing device having a central processing unit, and image forming apparatus using the fixing device
A fixing device in an image forming apparatus having various functions such as print data reception, FAX transmission/reception, and the like, has a member to be heated (1), an excitation coil (2)...
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6314252 |
Image forming apparatus and method of a forming image
A fixing unit for a copying machine has a heating roller having a heating portion therein, and a press roller provided in rolling contact with the heating roller. The heating roller has a paper...
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6311028 |
Fixing apparatus with controlled heaters
A fixing apparatus for controlling fixing temperature by controlling operations of a plurality of heaters, the apparatus includes: a timer for measuring a period of time for operations of the...
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6308021 |
Fixing device capable of correcting fixing conditions in accordance with an integrated energizing time
A fixing device is provided with first and second fixing members each having an elastic member, a heater for heating at least one of the first and second fixing members and a controller. The first...
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6304731 |
Printer for narrow media
A printer has a media feed path (12) for feeding sheets of media (14), with the path having a side reference edge (52) for aligning the media. A media transport mechanism feeds the sheets of media...
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6301454 |
Fixing heater controlling method and an image forming device
There are provided three periods of time immediately after an AC power-supply voltage is started to be applied to fixing heaters when the heater temperature falls below a target temperature: a...
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6298213 |
Image forming apparatus with image fixing means of low heat capacity
An image forming apparatus has an image forming unit for forming an image on a recording material and a fixing unit for fixing the image to the recording material by nipping and conveying the...
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6289185 |
System for controlling axial temperature uniformity in a reproduction apparatus fuser
A system for controlling axial temperature uniformity in a reproduction apparatus fuser device having at least one heated fuser member to permanently fix a marking particle image to a receiver...
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6278852 |
Image forming apparatus having electric power adjusting means
An image forming apparatus has an image forming unit for forming an image on a recording material, an image fixing device for fixing the image onto the recording material, the image fixing device...
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6259870 |
Fixing device control method and apparatus, fixing device, and image forming machine
In a photoelectrographic image forming machine of the power saving type, a temperature rise tendency calculating unit calculates a tendency of temperature rise in terms of an amount of temperature...
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6249657 |
One-way heat fixing device for fixing developers on a recording medium and a method therefor
The present invention provides a one-way heat fixing device for developers in which thermal energy from the fixing roller is provided to the unfixed developer on a recording medium. The fixing...
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6246842 |
Fuser control for limiting current draw in an electrophotographic machine
A fuser assembly and associated method for an electrophotographic machine heats a first fuser roll with a first heating device. A second heating device heats a second fuser roll. It is determined...
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6243547 |
Image heating apparatus having a plurality of heaters
An image heating apparatus is provided where an electrical power supply to a second heater is started during the electrical power supply to a first heater, a power supply control that controls the...
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6240263 |
Flicker suppression device in electronic equipment
In a standby state capable of forming an image, a period of a drive pulse of a heater in a fixing unit is made longer than that of the drive pulse in an image formation state to decrease the number...
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6233412 |
Fixing device for dual-sided-printing capable image reproducing apparatus
In an electrophotographic printing apparatus, a fixing device heat-roller control system configured for specially controlling the heat roller fixing temperature during consecutive dual-sided...
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6219498 |
Image forming apparatus having improved image transfer characteristics
By application of a voltage from a power source, a transfer roller carries out both transfers of (A) a first transfer for transferring a toner image on a photoreceptor to an intermediate transfer...
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6198888 |
Fixing device for controlling fixing temperature in a stable manner
A belt fixing device including a fixing roller, a heating roller, an endless fixing belt spanned around the fixing roller and the heating roller and a pressing roller disposed opposing the fixing...
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6188854 |
Non-contact thermal temperature controller
A temperature monitoring and control system interfaces with a host printing system through a communication medium to allow the host printing system to maintain control of heating lamps used to heat...
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6185388 |
Image heating apparatus with standby temperature overshooting prevention feature
An image heating apparatus includes a power supply controller, which sets the set temperature to change the temperature of the heating roller. The power supply is cut off before the temperature of...
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6185389 |
Control of thermal heating in a belt fuser
An electrophotographic printing apparatus which eliminates overheating of the fuser belt when narrow gauge print media is utilized is disclosed. In this apparatus, a detection means determines...
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6185383 |
Image heating apparatus
The present invention relates to an image heating apparatus in which an image on a moving recording material is heated by a heat from a heater, the heater has an elongated substrate extending in a...
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6175699 |
Image fixing device with heater control
An image fixing apparatus has a heating member, a back-up roller cooperating with the heating member to form a nip therebetween for pinching and conveying a recording material bearing an image...
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6173132 |
Ventilation system for an image forming apparatus
It is an object of the present invention to provide an energy-saving image forming apparatus capable of fixing toner in a reliable manner to enhance the quality of images, control the temperature...
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6173131 |
Image heating apparatus
An image heating apparatus includes a heating member for heating an image on a recording material, a first temperature detecting element for detecting a first temperature of the heating member, a...
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6167216 |
Temperature sensor and toner image fixing device provided with said temperature sensor
A prior art temperature sensing element by supporting plates against a fixing roller would detect a temperature lower than an actual surface temperature of the fixing roller, because said...
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6163662 |
Image forming devices, fusing assemblies, and methods of forming an image using control circuitry to control fusing operations
The present invention relates to image forming devices, fusing assemblies and methods of forming an image. According to one aspect of the invention, an image forming device includes a housing...
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6160975 |
Closed loop ramping control and method of fusing temperature, and optimizing first copy time
A system and method employing a control algorithm that implements a closed loop ramp up of fuser temperature by traversing an arc of discrete temperatures leading to the steady state temperature....
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6151463 |
Apparatus and method for forming a toner image
It is an object of this invention to provide a copying machine which can suppress an increase in total power consumption of the overall machine. In executing a plural image formation mode in which...
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