Screen Holdings Co., Ltd.

Dainippon Screen Mfg. Co., Ltd.

Kohei Ueda

Shigenori Arizono

Ryoko Sakurai

Kenichi Yokouchi

Hiroyuki Segawa

Asuka Muramatsu

Tomotaka Kato

Koji Matsuo

Hiroki Endo

Rui Yamaguchi

Yuya Takagi

Kensuke Usui

The inkjet printing apparatus is configured to be able to execute a batch adjustment process of performing a plurality of times of adjustment processes related to printing in succession based on one instruction from an outside. The conveyance control unit maintains the conveyance speed at a first speed in a period when a chart printing process is performed and a period when a chart imaging process is performed. The conveyance control unit decreases the conveyance speed from the first speed to the second speed after the end of the chart imaging process in an adjustment process except for an adjustment process that is performed last in the batch adjustment process, and increases the conveyance speed from the second speed to the first speed before the start of the chart printing process in an adjustment process that is performed next.

Printing apparatus and batch adjustment method therefor

A method for limiting the amount of ink discharged in a photocurable inkjet printing apparatus includes a conversion step of converting, an input grayscale value to the amount of ink; and a limit value setting step of setting, a limit value of the amount of ink discharged, for each of a secondary color not including a K color component, a tertiary color not including a K color component, and a color including a K color component. In the limit value setting step, the limit value for the tertiary color not including a K color component is set to a smaller value than the limit value for the secondary color not including a K color component, and the limit value for the color including a K color component is set to a smaller value than the limit value for the secondary color not including a K color component.

Method for limiting amount of ink discharged, method for creating color conversion table, gloss determination device, recording medium having recorded therein gloss determination program, and gloss determination method

As image processing apparatus includes a color converteras a color converting device. The color converterhas, as main functional components for carrying out color conversion of halftone of a spot color, a spot color information acquiring unitfor acquiring spot color information from manuscript data, a spot color Lab acquiring unitfor acquiring L*a*b* values in an L*a*b* color space when the dot percentage of the spot color is 100%, a first calculating unitfor calculating halftone L*a*b* values, using the L*a*b* values at 100% dot percentage of the spot color acquired by the spot color Lab acquiring unitand a dot percentage of the spot color in a printing target portion of the spot color, and a second calculating unitfor converting, using an output ICC profile, the halftone L*a*b* values calculated by the first calculating unitinto CMYK values.

Color converting apparatus and a color converting method

Page-group data indicating many pages is analyzed to acquire the degree of reuse of page components as an analysis result. A set of page data pieces in the page-group data is acquired as a data block, the number of the pieces corresponding to a unit page number that is the number of pages to be processed collectively as a single task when a conversion processor in a system actually converts the page-group data into drawing data. A predetermined conversion processor converts the data block into drawing data to acquire a conversion processing time. A predicted value of a conversion processing time required for the conversion processor in the system to actually convert the page-group data is accurately obtained using the conversion processing time of the data block. An operator is notified of the analysis result and the predicted value and can easily ascertain the appropriateness of the page-group data.

Conversion time prediction apparatus, recording medium, and conversion time prediction method

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Kyoto, Japan

Kohei Ueda