Abstract: According to one embodiment, there is provided an image forming apparatus, including an accommodation unit, an image forming unit, an image reading unit, an image erasing unit, a first medium processing unit, and a second medium processing unit. The first medium processing unit forms the image on the recording medium carried from the accommodation unit and discharges the recording medium on which the image is formed, based on the setting of a first image process mode. The second medium processing unit forms a test image on the recording medium carried from the accommodation unit, reads the test image, erases the test image, and returns the recording medium to the accommodation unit, based on a setting of a second image process mode.

Abstract: According to one embodiment, an image forming apparatus includes: a first paper feeding unit; a second paper feeding unit; a fixing unit configured to fix a developer image transferred onto a sheet; a conveying path configured to convey sheets; a receiving unit configured to receive an execution instruction for duplex printing for continuously printing an image on one surface and on the other surface of a sheet; an acquiring unit configured to acquire, in the printing on one surface, information concerning presence or absence of an image on the other surface; and a processor configured to change, in the printing on one surface, if a result of the acquisition concerning the sheet fed from the first paper feeding unit indicates that an image is present, a paper feeding unit from the first paper feeding unit to the second paper feeding unit and performs control for re-executing the duplex printing.

Abstract: According to one embodiment, there is provided an image forming apparatus, including an accommodation unit, an image forming unit, an image reading unit, an image erasing unit, a first medium processing unit, and a second medium processing unit. The first medium processing unit forms the image on the recording medium carried from the accommodation unit and discharges the recording medium on which the image is formed, based on the setting of a first image process mode. The second medium processing unit forms a test image on the recording medium carried from the accommodation unit, reads the test image, erases the test image, and returns the recording medium to the accommodation unit, based on a setting of a second image process mode.

Abstract: An image forming apparatus according to this invention includes an image processing unit configured to input pre-image processing image data and perform various image processing, a storage unit configured to store the pre-image processing image data and repeatedly read out and output the stored pre-image processing image data to the image processing unit, and a printing unit configured to print post-image processing image data outputted from the image processing unit. With the image forming apparatus according to this invention, the work efficiency in adjustment of image processing parameters can be improved.

Abstract: A scanner scans an image of an original document as first image data. A first image processor processes the first image data scanned by the scanner. The first image processor stores the processed first image data to a memory in a state of compressed code data. A second image processor reads the first image data stored in the memory as the code data. The second image processor process the first image data read from the memory for printing. An image synthesizer synthesizes pixel data of the second image data with respective pixel data of the first image data after the image processing for printing by the calculation processing. A printer prints the synthesized image data.

Abstract: A ring buffer is provided in the data holding section A3 of a data processing section 100A. A master-slave relationship between a plurality of data processing sections 100A, 100B is set. A data output synchronizing signal of the data processing section 100A acting as a master is supplied to the data processing section 100B acting as a slave. This makes it possible to synchronize the output data of the individual data processing sections, while suppressing the memory cost. Input connection terminals (A1) take in object data, an object data enable signal (INHDEN) from the outside, and an object read clock (IMCLK) from the outside. A data holding section (A3) stores object data on the basis of an internal clock. A synchronizing circuit (A4) reads the stored object data on the basis of INHDEN and IMCLK. An output connection terminal (A2) outputs output object data, INHDEN, and an internal clock equivalent to IMCLK to the outside.

Abstract: In a color image forming apparatus in which images of a plurality of element colors are sequentially transferred to form a color image, there are provided a plurality of RAM/register units with respect to one image processing unit. Control information is previously stored in the RAM/register units, so that the switching of the element color to be transferred is achieved by switching the RAM/register units, not by rewriting the contents of the RAM/register unit. Thereby, simplification of constitution and high-speed printing can be achieved.

Abstract: An image forming apparatus according to this invention includes an image processing unit configured to input pre-image processing image data and perform various image processing, a storage unit configured to store the pre-image processing image data and repeatedly read out and output the stored pre-image processing image data to the image processing unit, and a printing unit configured to print post-image processing image data outputted from the image processing unit. With the image forming apparatus according to this invention, the work efficiency in adjustment of image processing parameters can be improved.

Abstract: A copier and method for automatically determining whether the original is color or monochrome and generating a corresponding copy. The copier comprises a scanner which generates RGB data from the document, a color/monochrome processor which determines whether the document is a color or monochrome document based on the RGB data from the scanner.

Abstract: If a CPU is informed that “1200×1200 dpi” is selected from an input unit, the CPU switches a normal 8-bit RIP process with 600×600 dpi to a 1-bit RIP process with 1200×1200 dpi. Image data, which has become 1-bit data with 1200 dpi, is stored in a page memory. A pixel packing process unit executes (2×2) packing when the image data stored in the page memory is to be output from the page memory. The packed Y color image data is restored, without delay, to a normal pixel unit in a pixel division unit. The packed M color image data is restored, with a delay in a delay memory, to a normal pixel unit in the pixel division unit. The packed C color image data is restored, with a delay in the delay memory, to a normal pixel unit in the pixel division unit. The packed K color image data is restored, with a delay in the delay memory, to a normal pixel unit in the pixel division unit.

Abstract: A ring buffer is provided in the data holding section A3 of a data processing section 100A. A master-slave relationship between a plurality of data processing sections 100A, 100B is set. A data output synchronizing signal of the data processing section 100A acting as a master is supplied to the data processing section 100B acting as a slave. This makes it possible to synchronize the output data of the individual data processing sections, while suppressing the memory cost. Input connection terminals (A1) take in object data, an object data enable signal (INHDEN) from the outside, and an object read clock (IMCLK) from the outside. A data holding section (A3) stores object data on the basis of an internal clock. A synchronizing circuit (A4) reads the stored object data on the basis of INHDEN and IMCLK. An output connection terminal (A2) outputs output object data, INHDEN, and an internal clock equivalent to IMCLK to the outside.

Abstract: In a color image forming apparatus in which images of a plurality of element colors are sequentially transferred to form a color image, there are provided a plurality of RAM/register units with respect to one image processing unit. Control information is previously stored in the RAM/register units, so that the switching of the element color to be transferred is achieved by switching the RAM/register units, not by rewriting the contents of the RAM/register unit. Thereby, simplification of constitution and high-speed printing can be achieved.

Abstract: A copier and method for automatically determining whether the original is color or monochrome and generating a corresponding copy. The copier comprises a scanner which generates RGB data from the document, a color/monochrome processor which determines whether the document is a color or monochrome document based on the RGB data from the scanner.

Abstract: Image data of various data formats stored in the storage of the MFP can be visually displayed on the display as an image after converting format of image data stored in the storage to a predetermined format by the data format converter.

Abstract: The density of an image read by a scanner unit 1 is recognized. A consumption of tonor required for development in each of development units 69y, 69m, 69c and 69k is detected according to the results of the recognition. The detected consumption is displayed on a liquid crystal display unit 44.

Abstract: The density of an image read by a scanner unit 1 is recognized. A consumption of tonor required for development in each of development units 69y, 69m, 69c and 69k is detected according to the results of the recognition. The detected consumption is displayed on a liquid crystal display unit 44.

Abstract: The density of an image read by a scanner unit 1 is recognized. A consumption of tonor required for development in each of development units 69y, 69m, 69c and 69k is detected according to the results of the recognition. The detected consumption is displayed on a liquid crystal display unit 44.

Abstract: An image forming apparatus is provided with a photosensitive body drum for supporting an image, an exposing section for exposing a latent image on the photosensitive body drum, a developing device for supplying developing agent to the latent image which has been formed by the exposing section to develop the image, a transferring belt which contacts with the photosensitive body drum to transfer the developing agent image which has been developed by the developing device to a paper, a first driving motor for rotationally driving the photosensitive body drum, a second driving motor for rotationally driving the transferring belt, a first detecting unit for detecting the rotating state of the photosensitive body drum driven by the first driving motor, a second detecting unit for detecting the rotating state of the transferring belt driven by the second driving motor, and a CPU for, when it is determined on the basis of detection signals sent from the first and second detecting units that the rotation of the photos