Riso Kagaku Corporation

Other

Nisca Corporation

Hideharu Yoneoka

Hiroshi Saito

Naoto Mochizuki

Koji Nakayama

Shigeki Fukai

Naoyuki Iimura

Kenichirou Nakazawa

An image processing method in which a RIP process is performed on original image data to obtain raster data with a first resolution, and a smoothing process is performed through oversampling the obtained raster data to generate output image data with a second resolution which is smaller than the first resolution. The method is performed for recording an image on a recording medium by an inkjet recording device that performs the recording by discharging an ink drop on the recording medium from an inkjet head based on the output image data. Here, the first resolution in the RIP process for performing the smoothing process on the raster data is determined according to information that indicates the number of gradations corresponding to the number of ink drops selected in advance and the second resolution.

Image processing method and apparatus comprising an image processing in which a RIP process is performed on original image data

The effective image area detectordetects an effective image area within image data subjected to color conversion, and an image processing/screening unitapplies image processing to image data in the effective image area and transfers the processed image data in the effective image area to a print engine together with position and size information of the effective image area. This reduces image processing time and data transfer time to the print engine, thereby reducing printing time of image data.

Image processor and image processing program for applying image processing to input data and transferring the same to print engine

A backlash correction device of this invention has a motor, a gear transmitting a moving force from the motor to a paper feed base, a spring urging the paper feed base to one of forward and backward movement directions of the paper feed base using an urging force, and a controller. (1) If the paper feed base is moved in an opposite direction to an urging direction of the spring, the controller drives the motor in a movement direction of the paper feed base by a predetermined movement quantity. (2) If the paper feed base is moved in a same direction as the urging direction of the spring, the controller (2-1) drives the motor in a movement direction of the paper feed base by a movement quantity which is the sum of the predetermined movement quantity and a correction quantity equal to or greater than a maximum backlash quantity, and (2-2) then drives the motor in an opposite direction by the correction quantity.

Backlash correction device and backlash correction method

A stencil printing machine is provided with a stencil drum and a opposite which are a pair of cylindrical parts located with their external peripheral surfaces being close to each other, a stencil sheet being detachably wound on the external peripheral surface of the stencil drum , and serves to perform stencil printing process by rotating the stencil drum and the opposite in order that the external peripheral surfaces thereof are located close to each other and moved in the same direction while the stencil sheet is pressed against the opposite , and by making the stencil sheet in contact under pressure with a sheet of paper passing between the stencil drum and the opposite by the pressing force of the stencil drum . The stencil drum is detachably mounted on the stencil printing machine and provided with storage units to for storing information about the pressing force of the stencil drum against the opposite

Stencil printing machine

The disclosed stencil printing machine automatically judges the process to be executed by referring to the operation waiting state of the controller and its own operation waiting state. According to this disclosed structure, the user's operation of printing process is enhanced, and the efficiency of printing process is heightened.

Stencil printing system, stencil printing method, and computer-readable recording medium storing stencil printing program

An image forming system including an image forming apparatus, one or more sorters for after-processing image-formed sheets discharged from the image forming apparatus, mode selector for selecting a sheet after-processing mode, detector for detecting the presence of sheets stored in the sheet after-processing apparatus, and controller responsive to detection by the sheet detector of presence in the sheet after-processing apparatus of sheets stored in a certain mode for disabling operation of the image forming apparatus when an operating mode using the sheet after-processing apparatus that is different from the certain mode is selected by the mode sector.

Image forming system having an after-processing apparatus

A printing system comprises a printer for conducting stencil making and printing, a finisher such as a sorter for receiving and holding printed sheets discharged from the printer and aligning the received printed sheets, and control means for starting stencil making in the printer without waiting for the finisher to finish aligning the printed sheets. The control means is preferably responsive to completion of printed sheet insertion in the finisher for substantially simultaneously starting the stencil making operation in the printer and the aligning operation in the finisher. The printing system enables a reduction in overall printing time.

Printing system

There is disclosed a sheet distribution device in which when sheets are discharged to each distribution bin by a sheet moving means, reduced is a period of time required for shifting to the next sheet moving operation after one sheet moving operation is finished. The sheet distribution device receives image formed sheets,from an image forming device,and distributes and stores the sheets,into plural distribution bins,The sheet distribution device is provided with a post-processing means for post-processing the sheets,stored in the distribution bin,a sheet bunch pushing member,for moving the sheets,stored in the distribution bin,along the guide hole,in the distribution bin,to the post-processing means, and a guide rail,for elevating or lowering the sheet bunch pushing member,When the sheet bunch pushing member,is moved along the guide rail,the sheet bunch pushing member,can be moved in a direction in which the engagement with the guide hole,is released.

Sheet distribution device

A stencil printer system includes a stencil printer unit. The printer unit is provided with a master making system which makes a stencil master on the basis of an image read out from an original, a printing system which makes copies of the original by transferring ink to printing sheets through the stencil master, an original conveyor which conveys originals placed in a predetermined position to the master making system one by one, and an original detector which detects whether an original exists in the predetermined position. A post handling unit including a sorter and a stapler is connected to the printer unit. A first mode setting key is manually operable to set the printer unit to a continuous printing mode in which the printer unit repeats making a master and printing copies of the original so long as the original detector detects existence of an original in the predetermined position. A second mode setting key is manually operable to set the post handling unit to one of a stapling mode and a non-stapling mode. The first mode setting is caused to set the printer unit to the continuous printing mode when the second mode setting key is operated to set the post handling unit to the stapling mode.

Stencil printer system

A sheet sorter with a stapler includes a plurality of bins arranged in a vertical direction each of which receives a plurality of sheets discharged from an and forms thereon a stack of sheets. An indexer receives the sheets from the image recording apparatus and distributes the sheets to the respective bins through the sheet inlet ends thereof. A stapler is movable up and down along the array of the sheet inlet ends of the bins and in a direction of width of the sheets to staple the stack of sheets on each bin which has been ejected beyond the sheet inlet end of the bin by a predetermined length. A single reciprocal pusher member is actuated after completion of stapling by the stapler and pushes the stapled stack of sheets back to the bin. A centering mechanism moves the reciprocal pusher member to a position substantially opposed to the middle of the trailing edge of the stack of sheets before the reciprocal pusher member is actuated.

Sheet sorter with stapler

A sheet resident space is provided on an indexer of a sheet transfer system, and a controller stops the image recording apparatus upon detection of a sheet jam about the indexer and stops the sheet transfer system after keeping it operating for a predetermined time interval sufficient for the sheet transfer system to transfer all the sheets in the sheet transfer passage thereof to the sheet resident space.

Growing community of inventors

Ibaraki-ken, Japan

Hideharu Yoneoka