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7643783 |
Image forming apparatus employing an electrophotographic method
A CMOS sensor scans an image that is either on a transfer material carrier or on a transfer material that is placed on the transfer material carrier. A sampling timing controller samples an image...
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7643186 |
Image forming device, method for adjusting toner concentration, programs, and recording media of the same
An image forming device has image forming units 3 - 6 , a transfer belt 7 , a position detection unit 19 , a concentration sensor 23 , and an adjustment unit. A toner image is formed on the...
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7643764 |
Reflective sensor sampling for tone reproduction control regulation
A method of monitoring one or more patches in an image-processing device comprised of photoreceptor, a controller, and a sensor, includes obtaining specular readings and diffuse readings from the...
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7639958 |
Image forming apparatus and control method therefor
This invention provides an image forming apparatus capable of shortening the user's print waiting time as much as possible when it is determined that image adjustment is necessary during the image...
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7639959 |
Image forming apparatus including movable belt unit and movable detecting member
An image forming apparatus includes a toner image forming device, a toner image conveyer unit, a control device, and a moving device. The toner image conveyer unit includes a toner image conveyer,...
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7636533 |
Color image forming apparatus
A color image forming apparatus including: a plurality of drum-type photoconductors for forming an image in a different color on each peripheral surface and the photoconductors having at least two...
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7630658 |
Image forming apparatus with an adjustable cleaning voltage
An image forming apparatus includes a cleaning apparatus, which electrostatically removes toner remaining on the image bearing member after a toner image formed on the image bearing member is...
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7623801 |
Image forming apparatus and control method thereof
An image forming apparatus for forming an image corresponding to an image signal on a recording material, comprising: a signal processor which generates an image-formation control signal by...
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7616910 |
Image forming apparatus capable of optimizing glossiness of image formed on recording material with transparent or white toner
An image forming apparatus includes an image forming section for forming an image on a recording material with transparent toner; a heater for heating a first image and a second image which are...
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7616909 |
Image forming apparatus and image forming method
In an image forming apparatus, a toner image formed on a photosensitive drum is primarily transferred onto an intermediate transfer belt. The toner image on the intermediate transfer belt is...
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7616908 |
Image forming apparatus and method having exposure control depending on first and second density patches
An image forming apparatus according to an aspect of this invention includes: a photoconductive unit; an exposure unit outputting a pulse-width-modulated light signal and exposing the...
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7613408 |
Image forming apparatus for correcting image formation condition
An image forming apparatus includes: an image forming unit that forms an image by forming an electrostatic latent image on an image carrying body, developing the electrostatic latent image by...
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7609987 |
Image forming apparatus and control method of image forming apparatus
This invention enables an image forming apparatus to perform highly precise misregistration detection without causing increased downtime or increased cost. For this, the image forming apparatus...
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7603047 |
Image forming apparatus capable of forming high-quality image
A printer detects density of a toner pattern on an intermediate transfer belt, operates a differential value for the detection value, and compares the differential value with a threshold value. If...
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7599634 |
Subjective and objective universal substrate printer ICC profile selection
Forming a multicolor image on a receiver member wherein a database of custom color profiles based on substrate physical properties and printing process characteristics is established. A set of...
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7599646 |
Image forming apparatus with an endless belt for receiving toner images and a controller for controlling surface speed of an image bearing member or the moving speed of the endless belt in accordance with surface conditions of the endless belt
An image forming apparatus includes an image forming section for forming a plurality of toner images on a plurality of image bearing members respectively by an electrographic system; an endless...
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7599632 |
Image forming apparatus and method for forming images for carrying out development using a light toner and a dark toner having substantially the same hue
An image forming apparatus configured to carry out development using a light toner and a dark toner having substantially the same hue, includes a pattern forming unit configured to form a pattern...
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7593130 |
Printing systems
Measurements are taken of a first parameter associated with a first marking engine and of a second parameter associated with a second marking engine. The first and second measurements are compared...
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7593656 |
Method and device for controlling registration
A device and a method using a printing device and system for printing sheets whereby, for each sheet, at least one register mark per color printing unit of the multi-color printing machine is...
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7593655 |
Image forming apparatus having toner image transfer section
An image forming apparatus sets the optimum transfer bias based on density of some sets of toner patches formed on an image bearing member or an intermediate transfer member. The toner patches are...
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7593654 |
Mass-based sensing of charging knee for active control of charger settings
A xerographic marking engine adjusts a charging actuator, such as an AC peak-to-peak voltage or an AC peak-to-peak AC current, based upon toner patch density measurements made using, e.g., a toner...
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7590363 |
Image forming apparatus and control method
This invention has an object to process color balance adjustment at high speed in an image forming apparatus without depending on different feeding speeds for different printing materials. To...
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7590364 |
Image forming apparatus with irradiated light control based on reflected light amounts
An image forming apparatus includes a pattern forming unit which forms a light amount adjustment pattern on an image carrier belt, a light amount control unit which controls the amount of light...
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7587149 |
Image forming apparatus and method for controlling the same
An image forming apparatus comprises an image forming part and a density calibration control part. The image forming part forms an image in any one of a plurality of image forming modes with...
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7587157 |
Image forming apparatus capable of correcting a rotation speed of an image carrier
An image forming apparatus includes a latent image carrier having a moving surface on which a latent image is formed, a drive control mechanism to control a drive of the latent image carrier so as...
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7583909 |
Image forming apparatus and image forming method using decolorizing toner
An amount of toner adhered to a toner image formed on the photosensitive drum using decolorizing toner when forming an image is controlled to 0.75 (mg/cm 2 ) or below. As a result, a toner image...
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7583408 |
Image-forming apparatus and control method thereof
An image density in a predetermined section of an image represented by an image signal is calculated on the basis of the image signal, and the calculated image density is compared with the result...
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7583908 |
Image forming apparatus using an electrophotographic process and image forming method
An image forming apparatus of the invention includes a photoconductor, an exposure unit to expose the photoconductor, a developing unit to develop the photoconductor to form a developed image, a...
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7583919 |
Color image forming apparatus capable of effectively matching registration between elementary color images
Image forming apparatus includes image forming units, an intermediate transfer member, a mark detecting mechanism, a counter, and a controller. The intermediate transfer member have marks. A...
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7580647 |
Image forming apparatus and control method for image forming apparatus
An image forming apparatus including an image forming device which forms images on an image carrier and forms the images in a plurality of image formation regions on an intermediate transfer body...
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7580650 |
Image forming device and image forming method including formation of a toner patch
An image forming device including: an image carrier, being an endless belt, on which a toner image is to be formed; a resistance measuring unit operable to measure a distribution of electric...
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7577371 |
Image forming apparatus featuring correlation of toner concentration control and image parameter control
An image forming apparatus includes a first controller for controlling a replenishing operation of a toner replenisher, based on concentration information relating to toner concentration in a...
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7567761 |
Image forming apparatus and a method of controlling the image forming apparatus
An image forming apparatus, includes: a developer which is attachable to and detachable from an apparatus main body and which holds toner; an image forming section which forms a toner image using...
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7565085 |
Image forming device and toner consumption amount estimating method
An image forming apparatus includes: toner supply amount detecting means for detecting a toner supply amount to a developer tank; detecting means for detecting a signal value of each pixel of an...
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7551866 |
Image forming method and apparatus with improved conversion capability of amount of toner adhesion
An image forming method and apparatus capable of implementing accurately and constantly an improved conversion of the amount of toner adhesion over the entire range of the amount of adhesion. The...
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7551864 |
Image forming apparatus and method of controlling an image quality
An image forming apparatus includes an image bearing member, an image forming mechanism configured to perform an image formation by performing a first image forming operation to form a first image...
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7548702 |
Image forming apparatus and image forming method for preventing paper jams in a fixing unit
There is provided a technique in which a paper jam in a fixing unit can be prevented without adding a special part or the like, and without causing a damage of a pressure roller and distortion of...
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7548704 |
Image forming apparatus effectively conducting a process control
An image forming apparatus includes at least one image bearing member, an intermediate transfer member, a secondary transfer member, and at least one optical sensor. In the image forming apparatus,...
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7548703 |
Image forming apparatus administration system with developer density detection and developer lifetime information communication features
An image forming apparatus including an electrostatic image forming device, which forms an electrostatic image on an image bearing member, a developing apparatus, which develops the electrostatic...
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7548705 |
Systems and methods for marking test patches for calibrating and/or visually confirming color accuracy of a marking device
A printer or other marking device forms a first desired image in a first area, such as a main image area, of a first substrate; forms a first portion of a set of test patches in a margin area of...
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7546048 |
Method for determining ink usage efficiency in commercial printing processes using pigments and quantitative tests
A method for determining printing ink usage efficiency (weight of ink required to print a given area) in a printing process is disclosed where the method is based on the analysis of pigment in the...
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7546045 |
Image forming apparatus having image placement control and method of controlling same
Disclosed is an image forming apparatus whereby waiting time (downtime), which is required for forming an image by automatic adjustment relating to image formation density or image formation...
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7546046 |
Method and apparatus for controlling an image density
An amount of toner transfer on a reference pattern is calculated by using an optical detecting unit that detects both regular reflection light and diffuse reflection light from a detection target...
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7539429 |
Image forming apparatus having a stable image density
An image forming apparatus is provided capable of preventing fog from happening and obtaining more stable image density, which includes an image carrier; a charging section for charging surface of...
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7539425 |
Method and device for adjusting to a minimum value the toner supply to a developing station of an electrographic printing unit or copying unit
In a method to adjust the toner supply to a minimum value in a developer station of an electrographic printing or copying device in which charge images are generated on an intermediate carrier, the...
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7539428 |
Image-forming device wherein the density of the images are corrected
A printer is capable of generating a plurality of different measurement patch groups, each group being configured of a plurality of measurement patches having different densities. The printer...
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7538918 |
Toner image forming apparatus including gradation control
An image forming apparatus in which an image quality priority mode in which image density adjustment or image gradation control is effected to thereby give priority to the quality of an output...
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7536126 |
Apparatus for forming image-quality evaluation image
A test pattern P 3 longer than a length Ld corresponding to a circumferential length of a developing roller is formed along a moving direction of a photosensitive member (or developing roller)....
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7532833 |
Printing apparatus, printing system, and prediction method of usage of printing agent
A printing apparatus, a printing system, and a prediction method of the usage of a printing agent can be configured to predict, prior to a processing for developing a printing image, the usage of a...
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7526241 |
Method and apparatus for image forming capable of effectively correcting a misregistration of an image
An image forming apparatus forming a color image with color toners includes a plurality of image forming members, an image transfer member, a plurality of sensors, a calculator, an edge extractor,...
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