Minolta Company, Ltd.

Konica Minolta Business Technologies, Inc.

Kazuyoshi Noguchi

Yoshihiko Hirota

Takayuki Nabeshima

Makoto Obayashi

Takahiro Tsutsumi

Takatoshi Hamada

Hidekazu Takahama

Toru Maegawa

Masayuki Tanaka

In an image forming apparatus, a line width detection unit detects a line width from attribute data inputted from an attribute data input unit, an edge detection unit detects an edge from image data inputted from an image data input unit, and an AND calculation unit calculates an AND of results of these detections. A coefficient storage unit stores a coefficient set for each line width. A line width correction coefficient multiplication unit acquires a correction coefficient corresponding to the detected line width with regard to an edge and the detected pixel and performs a multiplication to thereby correct the line width.

Image forming apparatus capable of reproducing fine line of high quality

An image processing apparatus scans an image of a document to thereby create image data, and extracts specific code data from the created image data. If the specific code data is successfully extracted, pattern data corresponding to the specific code data is deleted from the created image data. Further, pattern data corresponding to the specific code data is embedded into the image data.

Image processing apparatus for extracting code data from scanned image and control method thereof

A multibeam scanning optical apparatus incluses a controller which specifies laser diodes which are emitting light normally and arranged in a continuous row, a memory having a plurality of area in which image data are stored, a write-in controller which causes image data for each line to be written into only areas of memory corresponding to the specified laser diodes when any of the laser diodes suffers a failure, a read-out controller which causes the image data for each line to be read out simultaneously from the areas of memory corresponding to the specified laser diodes and a driver which performs light emission control only with respect to the specified laser diodes.

Multibeam scanning optical apparatus and multibeam image forming apparatus

It is objected to provide an image processing apparatus achieving decrease of memory volume to be used, simplified print process, and enhancement of productivity. Firstly, a plurality of image data are recorded in memories provided for respective colors. Based on the image data or mode selection by a user, it is determined that whether a multi-color image or a monochrome image is to be outputted. Next, memoriesof respective colors transmit image data of respective colors to a computing unitin accordance with readout-timing signals from a timing selector. In case a multi-color image is to be outputted, the timing selectortransmits readout-timing signals of respective colors taking time difference length of which is predetermined for each color. In case a monochrome image is to be outputted, the timing selectortransmits readout-timing signals of respective color simultaneously. A computing unitforms monochrome image data in accordance with image data of respective colors, whereby process of monochrome print is simplified.

Image processing apparatus, image forming apparatus, image processing method, and program product thereof

1,800 dpi binary image data is divided into 3-bit data groups or 2-bit data groups, and is input from an input unitto a tone setting unitand a print position controller. Each group of 3-bit image data is converted into 8-bit tone data and 2-bit attribute data by the tone setting unitand the print position controller, respectively, and both sets of post-conversion data are input to a pulse width modulation unitat the same time. Because all 3-bit data is handled at the same time, the input and output operation clock signals can stay the same as for a 600 dpi resolution.

Image forming apparatus and image forming method

In an image forming apparatus employing a multi-beam method, the total emission period of time is stored for each laser beam. In accordance with the total emission periods of the laser beams, the laser beam used for SOS is switched, so that the total emission periods are kept almost equal to each other. When the laser beam used for the SOS is switched, the adjustment processing for correcting misalignment of the laser beams in the main scanning direction is changed in accordance with the current laser beam used for the SOS, and the emitting order of the laser beams for the APC is also accordingly changed.

Optical laser scanning device and image forming apparatus having the optical laser scanning device

A method and apparatus for correcting image parameters for each of several image forming apparatuses networked together are provided. In the present method and apparatus, one device, which can be one of the networked image forming apparatuses, operates as an image parameter correction apparatus. The image parameter correction apparatus reads in a prescribed image formed by each image forming apparatus, and calculates image parameter correction values for each image forming apparatus. The image parameter correction values for each image forming apparatus are calculated by comparing image parameters for the corresponding scanned prescribed image with reference image parameters. The image parameter correction values for each image forming apparatus are then transmitted to the corresponding image forming apparatus. In the case where one of the networked image forming apparatuses serves as the image parameter correction apparatus, that apparatus also forms a prescribed image, and derives the reference image parameters from its own prescribed image, which is scanned in along with the prescribed images formed by the other image forming apparatuses.

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Toyokawa, Japan

Kazuyoshi Noguchi