Abstract: An image reading apparatus includes: a read unit; an output unit; a determination unit that obtains a difference between the light values of the pixels sequentially outputted, the pixels being first pixel and second pixel arranged in first line and second line, respectively, at positions shifted from each other in the second scan direction, and that determines whether the difference exceeds a first threshold; a correction unit that corrects a chroma value of an adjacent pixel next to the first pixel when the difference exceeds the first threshold and when a predetermined condition is satisfied; and a position grasp unit that grasps the position of the first pixel whose lightness value and chroma value are outputted by the output unit. The determination unit performs at least any one of change of the first threshold and change of the second line when the position falls within a predetermined area.

Abstract: An image reading apparatus includes: a light source that irradiates a document sheet with light; a light receiving unit that receives reflected light from the document sheet; and a color determination unit that performs color determination as to whether an image of the document sheet is any one of a monochrome image and a color image. The color determination unit performs the color determination as to whether the image of the document sheet is any one of a monochrome image and a color image by comparing chroma information of the image of the document sheet read by the light receiving unit with a threshold calculated from chroma information obtained by reading an image having a predetermined chroma.

Abstract: A document feeder includes: a conveyance unit that separates one document from among documents placed on a document tray, and conveys the document; a first width-determining unit that determines a width of one of the documents; a second width-determining unit that determines a width of the conveyed document; a first length-determining unit that determines a length of one of the documents; a second length-determining unit that determines a length of the conveyed document; and a controller that if an inconsistency occurs between the width determined by the first width-determining unit and the width determined by the second width-determining unit, causes a display unit to display an operation guide including first content, and if an inconsistency occurs between the length determined by the first length-determining unit and the length determined by the second length-determining unit, causes the display unit to display an operation guide including second content.

Abstract: The present disclosure provides violet toners and methods for their production. In embodiments, methods of the present disclosure include systems which may be utilized to predict the color properties of a violet toner, thereby permitting adjustment of the pigment loading and/or target mass per unit area.

Abstract: An image forming apparatus includes: an image forming device; an intermediate transfer member; a secondary transferring device; a first cleaning member; a second cleaning member; a contacting/separating device; a release-agent applying device; and a controlling unit.

Abstract: An exposure apparatus according to an exemplary embodiment of the invention includes a substrate in which plural light-emitting devices are arrayed one-dimensionally or two-dimensionally; and a hologram recording layer that is disposed on the substrate, plural holograms being recorded in the hologram recording layer by holographic interference between a first beam and a second beam such that a predetermined number of beam spots are disposed in the hologram recording layer in a predetermined array direction according to a portion of light-emitting devices, the portion of light-emitting devices being selected as emitters from the plural light-emitting devices, the beam spot being formed by a light beam of the second beam, the first beam passing through an optical path of diffusion light that passes through the emitter, the second beam passing through an optical path of convergent light that converges at a predetermined distance outside the optical path of the first beam.

Abstract: An image reading apparatus includes a casing, a light emitting section, a substrate, a support member, and a light guide. The light emitting section includes plural point light sources disposed in a row. The light emitting section is installed to a first face of the substrate. The support member is installed to the casing and supports a second face of the substrate at a projection portion where a position of the light emitting section is projected at the second face of the substrate. The light guide is installed to the casing adjacent to the light emitting section, and guides light from the light emitting section to a read-face.

Abstract: According to an aspect of the invention, a computer readable medium stores a program causing a computer to perform a process. In the program, the process includes receiving an instruction from a user, determining a rule based on a strength of authentication information of the user, and executing information processing according to the received instruction and the determined rule.

Abstract: A lid device includes a main body, an opening/closing member, a support portion and a fall preventing member. The opening/closing member is attached to the main body so as to be opened and closed. The support portion is provided on the main body, and supports the opening/closing member in such a manner which the opening/closing member is disengaged from the main body when receiving force of opening the opening/closing member beyond a predetermined opening/closing angular range. The fall preventing member prevents the opening/closing member disengaged from the support portion from coming off the main body.

Abstract: The present disclosure provides processes for the production of block copolymer polyester resins suitable for use in manufacturing toners. In embodiments, the copolymers include both a crystalline block and an amorphous block, which can self-assemble to form nanoparticles suitable for use in forming toners.

Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved electrophotographic imaging member incorporating an outer layer having a nano- to micron-scale pattern imprinted into its surface to lower friction with the cleaning blade and improve print quality and performance. Embodiments also pertain to methods for making the improved imaging member.

Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved electrophotographic imaging member incorporating an outer layer having a nano- to micron-scale pattern imprinted into its surface to lower friction with the cleaning blade and improve print quality and performance. Embodiments also pertain to methods for making the improved imaging member.

Abstract: An image processing apparatus includes a selecting unit, a boundary strength calculating unit and a color replacing unit. When M representative colors include first and second colors, and N intermediate color between the first and second colors, the selecting unit selects the first and second colors and the N intermediate color. M and N denote natural numbers, N?1 and N<M?2. The boundary strength calculating unit calculates a boundary strength indicating a color or brightness difference at a pixel of the image to be processed. The color replacing unit determines replacement color candidates for the pixel from among the first color, the second color and the N intermediate color, and replaces a color of the pixel with any of the replacement color candidates. The replacement color candidates are determined in accordance with the boundary strength of the pixel calculated by the boundary strength calculating unit.

Abstract: A conveyance member includes: a rotating shaft; a plurality of support members that extend from the rotating shaft in a direction crossing an axial direction of the rotating shaft; and a plurality of arcuate members each having one end supported respectively by one of the support members, and having another end extending in a direction other than the axial direction so as to form an arc, wherein: when viewed in a direction perpendicular to the axial direction, there are a plurality of overlapping areas in which adjacent arcuate members overlap in the axial direction; and a length of at least one of the plurality of overlapping areas close to one end of the rotating shaft is greater than a length of each of the overlapping areas in the axial direction toward another end of the rotating shaft.

Abstract: An image processing device is provided including: an acquiring unit that acquires position data expressing a position of plural reference images provided on a reference medium; a scanning unit that scans the plural reference images; and a determination unit. The determination unit derives the sum of positional misalignment amounts of corresponding reference images, between the position of reference images expressed by image data obtained by the scanning unit, and the position of reference images expressed by position data acquired by the acquiring unit. The determination unit executes alignment of the reference images using a common correction coefficient predetermined so as to give the smallest sum of the positional misalignment amounts. Then the determination unit determines a dilation amount for image dilation on image data such that the dilation amount increases as the sum of the positional misalignment amounts increases.

Abstract: An image coding apparatus includes: a transformation unit that transforms spatial domain image data having plural pixels, by a pixel block including plural pixels as a unit, into plural coefficient groups each including plural frequency domain coefficients; a grouping unit that classifies the plural coefficient groups into plural groups for classification of values in these coefficient groups; a quantization coefficient calculation unit that calculates a quantization coefficient used for quantizing plural coefficients included in the respective plural coefficient groups based on the number of coefficient groups classified in the plural groups and the values of the coefficient groups classified in the plural groups; a quantization unit that quantizes the respective plural coefficients included in the respective plural coefficient groups obtained by the transformation by using the calculated quantization coefficient; and a coding unit that encodes the plural coefficients included in the plural quantized coeffic

Abstract: An image reading device includes: a moving body that is disposed so as to be movable with respect to an image reading device body along a reading portion; a light emitting component that is disposed in the moving body and comprises a plurality of point light sources that are arranged in one row in a substantially orthogonal direction with respect to a moving direction of the moving body; and a light guide body that is disposed adjacent to the light emitting component in the moving body, is placed so as to guide light from the light emitting component to the reading portion, and transmits some light reflected from the reading portion.

Abstract: An image reading device including: plural point light sources, each point light source being disposed at a placement interval F in a first direction; a light guiding body having an exit surface, incident light from the plural light sources exiting from the exit surface to a surface to be read, and a width S of the exit surface, in a second direction intersecting with the first direction, being smaller than the placement interval F; a light diffusing portion which diffuses light exiting from the exit surface, at an angle that is greater in the first direction than in the second direction; and a reading portion which receives light reflected at the surface to be read, and reads an image at the surface to be read, is provided.

Abstract: A document feeder includes: a document tray on which documents to be scanned are placed; a discharge tray onto which a scanned document is discharged; and a conveyance unit that conveys a document from the document tray to the discharge tray such that the document is caused to pass through an image-scanning position, the conveyance unit having: a first conveyance roll that supplies a document to the image-scanning position; a second conveyance roll that conveys a document that has passed the image-scanning position further downstream; a third conveyance roll that discharges a scanned document to the discharge tray; a driving force transmission mechanism that causes the first conveyance roll, the second conveyance roll, and the third conveyance roll to rotate relative to each other; and a document feeding operation member provided at a rotational shaft of the third conveyance roll, that is manually operated to rotate the rotational shaft.

Abstract: The disclosed embodiments are directed to electrophotographic photoreceptors imaging members. More particularly, the imaging members of this disclosure comprise a charge transport layer comprising a charge transport molecule and a charge stabilizing compound to suppress the effects of corona effluents and provide stabilized charge acceptance during prolonged cycling, thereby improving print quality.