摘要:
Image data Rin, Gin, Bin are read out from an image on a document, on reception of light reflected by the image after being emitted from a first light source for irradiating the document with visible light. Image data RUV, GUV, BUV are read out from the image on the document, on reception of light reflected by the image after being emitted from a second light source for irradiating the document with ultraviolet light. A color correction process is performed by reading out color corrected imaged data from a color correction table which stores in advance color corrected image data, which are associated with a combination of (i) image data, which correspond to the image data Rin, Gin, Bin, and image data which correspond to the image data RUV, GUV, BUV. By this, it is possible that even in a case where an image on the document contains a fluorescent image, the fluorescent image be easily and accurately reproduced.
摘要:
A local density calculation section calculates a density of a pixel region with a predetermined size including a current point of an input image disposed at the center on the basis of a pixel value of the pixel region. A mixing ratio calculation section generates a coefficient set of coefficients α and β in accordance with a local density value calculated by the local density calculation section, and outputs the generated coefficients α and β to a weight process section. The weight process section multiplies an operation result obtained from the input image by a first filter operation section by the coefficient α, multiplies an operation result obtained from the input image by a second filter operation section by the coefficient β, adds the multiplied results to each other and outputs the result of addition as a process result of a spatial filter process section.
摘要:
There is disclosed a sheet post-processing device which can staple a corner of a sheet bunch conveyed from an image forming device and makes a transverse width of a housing smaller or compact. By disposing a stapler in one end on a sheet processing tray inside a sheet conveying port, the transverse width of the housing is made smaller. For this purpose, the sheet post-processing stores sheets conveyed from the image forming device, matches the sheet bunch stored staples the matched sheet bunch and transfers the matched sheet bunch toward the other end of the sheet bunch and subsequently transfers the stapled sheet bunch toward one end of the sheet bunch.
摘要:
An image processing apparatus handling combined data including read data from a scanner and written data written by a touch pen, capable of performing appropriate color conversion both on the read data and written data is provided. When a display image obtained by combining the read data and the written data is to be printed, the image processing apparatus executes first image processing on the read data, and second image processing on the written data, respectively. By an image forming apparatus, the combined data including the read data and the written data, which have been appropriately color-converted by respective image processing, is printed.
摘要:
A set pattern image with no displacement is recorded onto recording paper. In this set pattern image, the centers of auxiliary patterns are displaced in an auxiliary scan direction off a referential straight line passing through the centers of primary patterns. The image forming apparatus causes the set pattern image to be read, measures the displacements of the auxiliary patterns in the auxiliary scan direction off the referential straight line, and compensates for the displacements, such as by adjusting writing timings in the auxiliary scan direction so that the displacements become zero.
摘要:
When an image forming means forms a reading gradation pattern chart, gradation patterns are formed so as to prevent an intensified electric field caused by a potential difference at a boundary of an electrostatic latent image on the gradation patterns, which are adjacent to each other in a sub-scanning direction of an image forming section. With this arrangement, an image forming apparatus for suitably correcting the gradation pattern can adjust image forming conditions in a positive and appropriate manner.
摘要:
In a case where the density correction condition of an image output section is satisfied while a job is being executed, density correction means performs density correction while the job is being executed or after the execution of the job. On this occasion, if there is a job on standby for printing in an image memory, this job is executed in the image formation condition (i.e. a correction amount stored in a current correction amount storing section) determined before the density correction. In the meanwhile, a job which is stored after the density correction is executed in a latest image formation condition (i.e. a correction amount stored in a latest correction amount storing section) which is figured out by the aforesaid density correction.
摘要:
A method and apparatus for resetting a sheet processing device is disclosed in which even if a trouble occurs, a sheet processing can be continued after resetting without wasting the previous processing. In a sheet processing device in which a set of sheets conveyed from an image forming device is discharged to a discharge tray after a predetermined processing process, the processing process is finely divided into plural function units and the function units are individually reset. In a memory device, a status flag indicating the condition of each module unit is assigned to each unit. The presence of a partially performed operation is confirmed by the status flag, and only the function unit having partially performed operation is reset to its initial condition.
摘要:
There is disclosed a sheet accumulation processing device in which sheets with images formed thereon are processed as a bunch before the sheet bunch is efficiently sorted and discharged to any one of plural discharge trays. The device comprises a load-carrying device for piling plural sheets; a sheet bunch discharging means for discharging a sheet bunch piled on the load-carrying device via a discharge port; plural discharge trays for storing the sheet bunch discharged by the sheet bunch discharging device; a discharge tray moving device for moving the discharge trays; a tray position detecting device for detecting positions of the discharge trays relative to the discharge port; a sheet presence detecting device for detecting presence of the sheets on the discharge trays; and a control device for selecting the discharge tray to which the sheet bunch is to be discharged based on detection results of the tray position detecting device and the sheet presence detecting device and moving the selected discharge tray by the discharge tray moving device. The control device selects a discharge tray which stores no sheet and is positioned closest to the discharge port as the discharge tray of the sheet bunch, and moves the selected tray to the discharge port, thereby minimizing the operation of moving the tray and shortening a setup time.
摘要:
Provided is an image forming apparatus in which one of developing units that respectively contain visible toners of black, yellow, magenta, and cyan other than the developing unit that contains the visible toner of black is replaced by a developing unit that contains a transparent fluorescent toner. Consequently, a document image can be expressed by the visible toner of black and a designated color which falls within a color reproduction range determined by two of the visible toners of yellow, magenta, and cyan, and an additional pattern which is an additional information image for preventing falsification and forgery can be printed on the document image with the use of the transparent fluorescent toner.