Abstract:
In an image processing apparatus gradation is represented by binary or multiple values. There is a memory to store correction information including a correction value corresponding to a position of image data. Correction circuitry corrects the image data according to the correction value. The number of bits representing the correction value for gradation is larger than the number of bits used to represent the image data.
Abstract:
In an image processing apparatus gradation is represented by binary or multiple values. There is a memory to store correction information including a correction value corresponding to a position of image data. Correction circuitry corrects the image data according to the correction value. The number of bits representing the correction value for gradation is larger than the number of bits used to represent the image data.
Abstract:
An apparatus includes an image-processing-unit that generates tag information indicating whether each of pixels of a first-resolution image data is a pixel of a character or a line, a resolution-converting-unit that converts the first-resolution image data to image data with a second resolution higher than the first resolution, and a light-source-driving-unit that drives light-source according to the second-resolution image data. The resolution-converting-unit includes an image-matrix-acquiring-unit that acquires an image matrix being image data and tag information with the first resolution in an area containing a target-pixel and pixels around the target-pixel, a pattern-matching-unit that determines whether the target-pixel is a pixel of an edge of a character or a line based on the image matrix, and a first-converting-unit that, when the pixel is the edge pixel, converts the image data to image data with the second resolution of a pattern determined in accordance with a layout of the target-pixel.
Abstract:
An image forming apparatus includes: a latent image forming unit that forms a latent image on a latent image bearer with light from a light source; and a correction data generating unit that includes: an acquiring unit that acquires, for each position, a correction value of an intensity of the light source to equalize a density distribution of a latent image; a quantizing unit that generates a correction data for each position by quantizing a correction value for each position; and an excessive correction suppressing unit that outputs the correction data after reducing an amount of change from an immediately preceding latent image formation position, with respect to a position at which an absolute value of a restored value indicating a correction amount and generated based on the correction data exceeds an absolute value of the correction value.
Abstract:
An optical scanning apparatus includes a light source; and a rotational polygon mirror having N reflecting surfaces, the rotational polygon mirror being configured to reflect a light flux emitted from the light source so that a scanning surface is scanned along a main-scanning direction with reflected from the rotational polygon mirror. A width of the light flux incident on the rotational polygon mirror in a direction corresponding to the main-scanning direction is smaller than a width of each reflecting surface of the rotational polygon mirror in the direction corresponding to the main-scanning direction.
Abstract:
An image forming apparatus includes: a charging unit that uniformly charges a surface of a latent image carrier; a latent-image forming unit; a developing unit that performs development by causing toner to electrostatically adhere on the surface of the carrier; a transfer unit that transfers a toner image onto a recording medium; and an image-density adjusting unit that causes to form a multi-gradation patch pattern on the surface of the carrier, that causes to detect potentials of latent image patches in the multi-gradation patch pattern, that causes to detect a toner adhesion amount on each toner patch, and that performs control of an image density. One of part and all of the low-density latent image patches is a dot-dispersed latent image patch in which the arrangement of unit dot latent images in the basic dot matrix is determined so that a minimum center-to-center distance having a smallest value is maximized.
Abstract:
An optical scanning apparatus includes a light source, an optical deflector having a rotary polygon mirror to deflect a light beam from the light source, a scanning optical system configured to focus the light beam deflected by the optical deflector on a target surface, a sync detecting sensor configured to determine a write start timing on the target surface, and a processing unit configured to correct detection data of the sync detecting sensor based on a measured value of a time needed for one revolution of the rotary polygon mirror.
Abstract:
According to one embodiment, an image processing device includes a black level regulating unit. The black level regulating unit has a frame integration average holding unit. A frame integration average is an integration average of an optical black signal using a video frame as a unit. The frame integration average holding unit holds the frame integration average as a signal to be applied to a black level regulation of an effective pixel signal. The frame integration average holding unit updates the frame integration average when an image pickup condition is changed.
Abstract:
A sheet conveying system which is capable of preventing a jammed sheet from being mixed with processed sheets, reducing waste in sheets and toners, and further alleviating the user's operations, when jamming has occurred during passing of a sheet between respective sheet conveying devices of upstream and downstream apparatuses. A puncher control section of a puncher as an upstream apparatus of the system issues a passing completion notification as to the passing of a sheet to a staple stacker control section of a staple stacker as a downstream apparatus of the system. Upon reception of the notification, when the staple stacker control section determines that the parameter of auxiliary information of the notification indicates an abnormal discharge of the sheet from the puncher, the staple stacker stops the conveyance of the sheet.
Abstract:
An image forming system is provided that alleviates throughput reductions and enables reductions in power consumption and lower noise. The image forming system includes an image forming apparatus that forms an image on a recording material and a plurality of sheet-conveying devices that convey the recording material. Furthermore, the image forming apparatus includes a storage unit configured to store connecting orders of the plurality of sheet-conveying devices and a determination unit configured to determine which of the sheet-conveying devices should be given notification by an operation start request or an operation end request according to designation information that designates the sheet-conveying device to which the recording material is conveyed and the connecting orders for the plurality of sheet-conveying devices. Further still, the image forming apparatus includes a transmitting unit configured to transmit an operation start request or an operation end request to each determined sheet-conveying device.