Ricoh Company, Ltd.

Ryuuta Katoh

Norimasa Sohgawa

Hiroki Takahashi

Yoshinari Suzuki

Kazuki Yasu

Yoshitaka Akiyama

Shino Sasaki

Yukihito Niino

A liquid discharge apparatus includes a liquid discharge head and a pattern printer. The liquid discharge head includes a plurality of nozzles to discharge liquid. The pattern printer drives the liquid discharge head to print a plurality of adjacent rectangular patterns under different drive conditions. The adjacent rectangular patterns are a reference pattern and an adjustment pattern.

Liquid discharge apparatus

A liquid ejection apparatus includes: a plurality of nozzles configured to eject liquid onto a conveyed object conveyed by a conveyance unit, based on input image data; and a control unit configured to control a number of droplets in first flushing for ejecting the liquid outside a region corresponding to the image data and a number of droplets in second flushing for ejecting the liquid inside the region corresponding to the image data in addition to ejection based on the image data. The control unit is configured to control the number of droplets in the first flushing and the number of droplets in the second flushing based on at least a length of the image data in a direction in which the conveyed object is conveyed.

Liquid ejection apparatus, inkjet system, and flushing method

An image formation apparatus includes a first discharge unit to form an image on a recording medium; and a second discharge unit including a nozzle line that discharges transparent droplets on the image formed on the recording medium. The second discharge unit moves in a first direction relative to the recording medium and the nozzle line has nozzles in a second direction orthogonal to the first direction. After the image formation, the second discharge unit discharges the transparent droplets from the nozzles spaced at m&#x2212;1 nozzle intervals to form a row of dots in the second direction, and repeats the forming while moving to form m rows in the first direction, such that the dots in the rows are formed at m&#x2212;1 nozzle intervals and positions of the dots between n-th and n&#x2212;1-th rows are displaced together by one nozzle in the second direction.

Image formation apparatus, method for examining discharge of transparent droplets, and program for examining discharge of transparent droplets

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Kanagawa, Japan

Ryuuta Katoh