U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 399/44 - Having temperature or humidity detection


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein a means or method is provided that
No. of patents: 446
Last issue date: 05/22/2012


1                      
NumberTitleIssue Date
8185000Electrostatic charging apparatus, and image forming assembly and image forming apparatus which employ the same
An electrostatic charging apparatus, includes: an endless-shaped electrostatic charging belt having electrical conductivity, the electrostatic charging belt being arranged in a state of having a predetermined contact zone being in contact with a moving to-be-charged...
05/22/2012
8175473Charging device and image forming apparatus
A charging device includes: a charging member; a charging power source that applies a charging voltage to the charging member; a temperature dependence storage unit that stores preset temperature dependence; a humidity dependence storage unit that stores preset humi...
05/08/2012
8175472Image forming apparatus
An image forming apparatus includes: a detected member of which a temperature is to be detected; a temperature sensor including a contact portion provided to contact the detected member, the temperature sensor being configured to detect the temperature of the detect...
05/08/2012
8170430Color image forming apparatus, color image forming method, computer program product
An out-of-color registration table containing a correspondence of amounts of out-of-color registration detected by an out-of-color-registration amount detector and machine states detected by a machine state detector is prepared. The out-of-color registration table i...
05/01/2012
8126342System for tailoring a transfer nip electric field for enhanced toner transfer in diverse environments
A system for tailoring a transfer nip electric field includes a transfer roll, a backup roll forming a transfer nip with the transfer roll, and a pre-nip roll positioned upstream from the transfer and backup rolls and the transfer nip such that a toner image-support...
02/28/2012
8107833Image forming apparatus and method of correcting color misregistration in image forming apparatus
A determining unit determines whether a difference between a temperature value and a temperature detected by a temperature detecting unit is equal to or larger than a first value. A pattern forming unit, when the determining unit determines that the difference is eq...
01/31/2012
8107834Image forming apparatus and control method for the same
An image forming apparatus that transfers a toner image from includes a transfer belt to a sheet via to carry a toner image, a transfer roller. The image forming apparatus transfers the toner image by applying a transfer bias voltage to either the transfer roller or...
01/31/2012
8090279Image forming apparatus having control unit
An image forming apparatus includes an image supporting member; a developer supporting member for attaching developer to the image supporting member to form a developer image; a transfer unit for transferring the developer image to a recording medium; a driving unit...
01/03/2012
8073348Image forming apparatus
An image forming apparatus forms images. A developer bearing body receives a first voltage and supplies developer to the electrostatic latent image formed on an image bearing body. A supplying member receives a second voltage and supplies the developer to said devel...
12/06/2011
8055143Image forming apparatus including temperature sensor embedded developers and method of controlling the image forming apparatus
Provided is an image forming apparatus which includes a photosensitive body on which an electrostatic latent image is formed, a developing unit including toner to develop the electrostatic latent image formed on the photosensitive body, a temperature sensor installe...
11/08/2011
8050578Image forming apparatus to heat and fix a toner image onto a print medium
An image forming apparatus is supplied that can obtain a correct temperature inside an image forming section and can perform an optimum temperature control so that it is possible to prevent remainder toner on the surface of the image carrying body from solidifying. ...
11/01/2011
8045867Apparatus and method to supply developer
Embodiments of an image forming apparatus, developer supplying apparatus and methods thereof may control a developer conveying speed in accordance with image print conditions, environmental status and/or developer amount to substantially maintain a stable amount or ...
10/25/2011
8036547Method for adjusting transfer voltage controls based on environmental conditions to improve print quality in a direct transfer image forming device
The present application is directed to methods of controlling the transfer voltage in a transfer nip formed between the photoconductive member and the transfer member. The methods offset the effects of large transfer current spikes caused when a media sheet enters a...
10/11/2011
8036548Customer replaceable unit monitor (CRUM) unit, replaceable unit and image forming apparatus comprising the CRUM unit, and unit driving method thereof
A replaceable unit to participate in an image forming job of an image forming apparatus includes a storage unit to store therein a driving condition corresponding to an operation environment, a detecting unit to monitor the operation environment, a controlling unit ...
10/11/2011
8019244User-friendly image forming apparatus with current supplier for supplying cleaning current, image forming method and recording medium
An image forming apparatus includes: an intermediate transfer belt for, by rotation thereof, transferring a toner image on a surface thereof; a cleaner for removing toner particles after the transfer by rotation of a cleaning brush which touches the surface of the i...
09/13/2011
8014688Image forming apparatus
An image forming apparatus including a photosensitive member, a charging apparatus to charge a surface of the photosensitive member when applied with a charging voltage, and an exposure apparatus to expose the surface of the photosensitive member after being charged...
09/06/2011
8010000Image forming apparatus for use in controlling image magnification
An image forming apparatus includes a light source unit, an image carrier on which a latent image is formed by a light beam emitted from a light source, a developing unit configured to develop a latent image formed on the image carrier using a toner, an intermediate...
08/30/2011
8005377Image forming device
An image forming device includes an image carrier having a surface onto which an electrostatic latent image is formed, a development station including a case made of a conductive body and one or more developer rollers, which supply toner housed in the case to the su...
08/23/2011
7995938Toner agitating stepping motor control unit, image forming apparatus and stepping motor control method
A control unit is provided with an excitation current output section for outputting an excitation current to a stepping motor, a first level judging section for judging a drive stop time level indicating the duration of a time during which the stepping motor is not ...
08/09/2011
7995937Image forming apparatus and control method thereof
An image forming apparatus and a control method thereof are provided. The image forming apparatus includes: an image carrying body which includes a surface on which a developer which corresponds to printing data is applied; a transferring unit which receives transfe...
08/09/2011
7978991Image forming apparatus
An image forming apparatus includes a high voltage generating circuit 91 that applies an oscillating voltage in which a DC voltage and an AC voltage are superimposed on each other, to a charging member 42 disposed in contact with an image carrier 41...
07/12/2011
7978992Image forming apparatus executing stabilization process at proper frequency
In an MFP, when a count of printed sheets of paper exceeds a predetermined count, a controller reads, from internal counters, a frequency of a stabilization process executed in return, a frequency of a stabilization process executed automatically in printing, a freq...
07/12/2011
7970299Image forming apparatus capable of detecting surface temperature rotating body without contact
The aim of the present invention is to provide an image forming apparatus that accurately detects surface temperature of a rotating body using a noncontact temperature detection section and corrects the detected temperature according to the temperature of the surrou...
06/28/2011
7965953Electrode-based post nip field conditioning method and apparatus
An image-forming device includes a media path extending through the image-forming device, and at least one image transfer nip positioned along the media path. An electrode is positioned subsequent to the nip with respect to the media path and is coupled to a voltage...
06/21/2011
7962055Image forming apparatus
According to one embodiment, an image forming apparatus includes a photoreceptor, a charging unit, an exposure unit, a developing unit, a transfer unit, a fixing unit, an environment detecting unit and a control unit. The charging unit includes a charger and a stati...
06/14/2011
7953332Method for regulation of the optical density in an electrographic printing method as well as a toner layer thickness measurement system and electrographic printer or copier
In a method or system for regulation of optical density in an electrographic printing method, a toner layer thickness of a toner image developed with a developer station is scanned with a sensor. The resulting toner layer thickness signal is used for regulation of i...
05/31/2011
7949267Image forming apparatus having an adjustment unit for adjusting a contact state between two members
An image forming apparatus is provided that has a developing agent holder arranged as opposed to an image holder having an electrostatic latent image formed thereon, the developing agent holder attaching the developing agent to the image holder, a developing agent s...
05/24/2011
7949268Dynamic photo receptor wear rate adjustment based on environmental sensor feedback
A xerographic marking engine adjusts a charging actuator value, such as an AC peak-to-peak voltage or an AC peak-to-peak current, based on a determined knee value, VKNEE, of a charge curve for an imaging apparatus photoreceptor within the xerographic mark...
05/24/2011
7941063Image forming apparatus with loop control
An image forming apparatus is provided, which prevents occurrence of conveying malfunction or image failure due to variation of conveying speed caused by endurance of a fixing unit or a conveying unit, variation of using environment, or a type of a recording materia...
05/10/2011
7941062Image forming apparatus to control an image forming condition
An image forming apparatus includes a rotatable photosensitive drum, a charging apparatus to which a charging voltage is applied, an exposure apparatus forming an electrostatic image, a developing apparatus to which a development voltage is applied, a timer measurin...
05/10/2011
7937004Image forming apparatus having replaceable components
Disclosed is an image forming apparatus which forms an image on a paper including a detection unit to detect a present temperature of one component or a plurality of components to be replaced among components constituting the image forming apparatus and a control un...
05/03/2011
7917046Development device and image forming apparatus provided therewith
The first direct-current bias power supply applying the first direct-current bias Vdc1 and the first alternating-current bias power supply applying the first alternating-current bias Vac1 are connected to a development roller. The second direct-current...
03/29/2011
7907855Image forming apparatus
An image forming apparatus including a first developing device including a first developer carrying member for carrying a developer containing toner, wherein a developing voltage including an AC component is applicable to the first developer carrying member to devel...
03/15/2011
7899346Humidity detecting device, and image forming apparatus provided therewith
The humidity detecting device includes a detection unit and a controller. The detection unit includes a humidity sensor for producing a humidity detection signal by detecting a humidity, a temperature sensor for producing a temperature detection signal by detecting ...
03/01/2011
7817929System and method for adjusting selected operating parameters of image forming device based on selected environmental conditions to improve color registration
A system for adjusting selected operating parameters of an image forming device to improve color registration based on selected environmental conditions includes a first image forming station to print a first registration mark on a substrate, a second image forming ...
10/19/2010
7817928Image forming apparatus and image forming method
An image forming apparatus includes an image carrier, an intermediate transferring body and a contact type secondary transferring member transferring an image from the intermediate transferring body to a recording medium. The apparatus forms an image with respective...
10/19/2010
7809294Image forming device controlling driving of a motor based on a detected temperature
An image forming device includes an image forming arrangement including a medium passage and motor, and a temperature detecting unit. A supplying control unit allows supply of a recording medium in the medium passage responsive to an image-forming signal, and preven...
10/05/2010
7773894Image forming apparatus
An image forming apparatus includes an image bearing belt configured to bear a toner image, a driving roller configured to rotationally drive the image bearing belt, first and second image forming units configured to form toner images on the image bearing belt. To c...
08/10/2010
7764888Image formation apparatus and charging control method of charging roll
An image formation apparatus includes: a photoconductor that has a photoconductive layer having a surface on which an electrostatic latent image is formed; a charging roll to which a bias with an AC component superposed on a DC component is applied for charging the ...
07/27/2010
7764889Image-forming device
An image-forming device includes a cleaning unit, a toner detection unit, a control unit, and a cleaning target member in the housing. The cleaning unit applies a predetermined voltage with a predetermined absolute value to the cleaning target member to remove toner...
07/27/2010
1                      
 
Sign InRegister
Username  
Password   
forgot password?