The present invention is characterized in that: a demanded printing-job is accepted at a printing-job accepting unit, and a printing executing unit executes printing according to the accepted printing-job so as to produce an output sheet onto a discharge tray; an output-sheet detecting unit detects the presence of a printed output-sheet on the discharge tray; if the removal of discharged sheets from the discharge tray is detected, a printed-sheet mixture determining unit determines the possibility that sheets printed corresponding to a plurality of demands are mixed among the removed output-sheets; and if it is determined the possibility that sheets printed corresponding to a plurality of the demands are mixed among the output-sheets, warning information is produced by a warning voice producing unit.

Image-forming apparatus and image-forming method

An image-forming device has a plurality of cylindrical image-carrying members, and an optical scanning unit. The plurality of cylindrical image-carrying members is provided in a main casing for rotating about respective rotational axes. The rotational axes are parallel to one another and juxtaposed in a single direction. The optical scanning unit is provided in the main casing and has a plurality of laser generators, a single rotatable polygon mirror, a plurality of mirrors, and a plurality of lenses. The plurality of laser generators is provided one-to-one relationship to the plurality of image-carrying members to emit respective laser beams. The single rotatable polygon mirror deflects the respective laser beams to scan the respective image-carrying members therewith. The plurality of mirrors is provided one-to-one relationship to the plurality of image-carrying members to guide the respective laser beams along respective optical paths to the respective image-carrying members. The plurality of lenses is provided one-to-one relationship to the plurality of image-carrying members and provided in the respective optical paths and between the respective mirrors and the respective image-carrying members. Distances from the respective mirrors to the respective image-carrying members being equal to one another.

Image-forming device

It is an object of the present invention to provide a method for fabricating a light emitting device, in which brightness gradient due to potential drop of a counter electrode can be prevented from being observed and an auxiliary electrode can be formed without increasing the number of steps, even when the precision of a light emitting device is improved. It is another object of the invention to provide a light emitting device fabricated according to the method. The light emitting device has a light emitting element and an auxiliary electrode in each pixel. The light emitting element includes a first electrode, a second electrode, an electroluminescent layer provided between the first and the second electrodes. Further, the first electrode is overlapped with the electroluminescent layer and the second electrode formed over an insulating film by means of a first opening formed in the insulating film. Still further, the auxiliary electrode is overlapped with the second electrode by means of a second opening formed over the second insulating film.

Light emitting device and method for fabricating light emitting device

A plurality of nip rollers are provided under a driving roller approximately in a direction of a drive shaft of the driving roller. Respective shafts of the nip rollers are arranged so that the rotary shafts are inclined toward a downstream side in a transport direction of a recording medium with respect to the drive shaft of the driving roller. Nip positions for the recording medium, formed by the nip rollers and the driving roller, are positioned on an upstream side in the transport direction above the lowermost end portion of the outer circumference of the driving roller. Therefore, the recording medium is transported at a satisfactory accuracy in an image-recording section, thereby avoiding the deterioration of the recording quality which would be otherwise caused by the positional deviation of the recording on the recording medium.

Image Recording Apparatus

A novel image development method and apparatus, wherein an imaging member having an imaging surface is provided with a layer of marking material thereon, and an electrostatic latent image is created in the layer of marking material. Image-wise charging of the layer of marking material is accomplished by a wide beam ion source such that free mobile ions are introduced in the vicinity of an electrostatic latent image associated with the imaging member having the layer of marking material coated thereon. The latent image associated with the imaging member causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer, such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate to produce an output document.

Electrostatic latent image development

PURPOSE:To obtain optimum gradation by executing the gradation conversion of image signals of red, green and blue in accordance with specific equations at the conversion of digital data obtained after the end of image processing into analog data. CONSTITUTION:When it is defined that the density of an image signal to be outputted at present is D, a gradation value after image processing is (n), the maximum value of the density signal D is Dmax, its minimum value is Dmin, and the maximum value of the gradation value is N, the density signal D is expressed by the equation D=(Dmax-Dmin)(n/N) +Dmin-(1) (in the equation, P is the factor of conversion). The conversion characteristics shown in the drawings are obtained by simplifying the equation like D=Dmax(n/255). In this case, the number of gradations (gradation capacity) N is 256 stages (8 bits) and the density is assigned to all density areas in the gradation capacity of 256 stages. The characteristic curve shown in the drawings indicates the conversion factor p=3 and the change of density gradation is increased in the low density area, so that the gradation is appropriate to human's psychological evaluation. Thereby, an output image of high quality can be obtained by executing gradation conversion on the basis of the characteristics shown in the drawings.

Image forming method

PROBLEM TO BE SOLVED: To prevent color shift when an image is formed through exposure of a plurality of color lights. SOLUTION: In writing per one line, exposure of blue light corresponding to yellow forming a dot of maximum size on a print sheet 4 is performed between exposure of green light corresponding to magenta and exposure of red light corresponding to cyan. Alternatively, a unit pattern of blue, green and red may be repeated a plurality of times within a unit time corresponding to one line. COPYRIGHT: (C)2005,JPO&NCIPI

Image forming apparatus and image forming method

PROBLEM TO BE SOLVED: To solve the problem that there is no means for adjusting images by associating several images, for example, for finishing the several images with a unified taste and that the adjustment of image quality is not sufficient, though the method of adjustment for obtaining desirable picture characteristics with respect to each image is sophisticated. SOLUTION: Pieces of image information of several images are obtained from various sources of image information and the several images are arranged and displayed on a preview screen. Then the image quality is adjusted for each of the images. COPYRIGHT: (C)2005,JPO&NCIPI

Method, device, and program for image processing, and image scanning device

PROBLEM TO BE SOLVED: To eliminate a stripe-form unevenness in an output image due to the variation of a light strength by a method wherein the inverse number of a relative light strength ratio at an exposure position when respective recording elements are driven under the same state as the time of an image recording, is multiplied by the image data of respective image elements at the time of image recording to correct the exposure amount. SOLUTION: A light emitting element array 4 of an optical printing head 40 is driven by a driving unit 6, and the driving unit 6 is controlled by a control unit 7 which performs the control of an exposure value. The light emitting element array 4 scans a plurality of recording elements to a recording medium 2, and records respectively different image elements, and controls the exposure value by the length of the driving time of respective recording elements in response to the image data of the recording picture elements which are multiple values, by the control unit 7, and performs a gradation recording. In this case, at the control unit 7, the exposure value correction is performed by substantially multiplying the inverse number of a relative light strength ratio at an exposure position when respective recording elements of the light emitting element array 4 are driven under the same state as the time of an image recording, by the image data for each image element at the time of an image recording by each recording element.

Image recording device

PROBLEM TO BE SOLVED: To provide an image forming system and an image forming method for producing a good print by exposing a plurality of rows of photosensitive materials simultaneously while eliminating the effect of difference in the kind of photosensitive material and slight difference in the photosensitive characteristics thereof SOLUTION: The image forming system comprises a section 6 for exposing a plurality of photosensitive materials P1, P2 arranged in parallel through a single exposing system, a section 8 for storing a plurality of correction amounts being set based on the characteristics of the photosensitive materials P1, P2 depending on the exposing region in the direction intersecting the arranging direction of the photosensitive materials P1, P2, and a section 7 for performing correction of the exposing region based on a correction amount such that the quantity of light at the exposing section 6 is affected

Haraguchi Takeshi

Papers

Image forming method

Image forming apparatus and image forming method

Method, device, and program for image processing, and image scanning device

Image recording device

Image forming system and image forming method