Image producing apparatus and image producing method

Patent metadata

Field	Value
Publication number	US-9248660-B2
Application number	US-201514852837-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Oct 5, 2012
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A control signal is generated, so that if dots, which are formed in a transverse direction across a recording medium, are classified into plural groups depending on a plurality of timings, then preceding dots, which belong to a group having an earliest timing, are formed in a pale color. A head drive circuit controls a recording head based on the generated control signal.

First claim

What is claimed is:

1. An image producing apparatus comprising:
a recording head for ejecting ink droplets of inks that are curable upon exposure to ultraviolet light or active light rays to form dots in a plurality of colors having different shades on a recording medium;
a head drive circuit for controlling the recording head based on a control signal to successively form the dots at a plurality of timings on the recording medium, to thereby generate image arrays in a transverse direction across the recording medium while the recording medium is moved in a feed direction with respect to the recording head;
an image processor for generating the control signal, which is supplied to the head drive circuit, from an input image signal, so that if the dots formed along the transverse direction are classified into plural groups depending on the plurality of timings, then preceding dots, which belong to a group having an earliest timing, are formed in a pale color; and
curing light sources for applying the ultraviolet light or the active light rays to the ink droplets, which are deposited on the recording medium,
wherein after ink droplets of the preceding dots are deposited on the recording medium and before ink droplets of subsequent dots are ejected from the recording head, the curing light source applies the ultraviolet light or the active light rays to the droplets of the preceding dots deposited on the recording medium.

2. An image producing method comprising:
ejecting ink droplets of inks that are curable upon exposure to ultraviolet light or active light rays to form dots in a plurality of colors having different shades on a recording medium;
controlling a recording head based on a control signal to successively form the dots at a plurality of timings on the recording medium, to thereby generate image arrays in a transverse direction across the recording medium while a recording medium is moved in a feed direction with respect to the recording head;
generating the control signal, which is supplied to a head drive circuit, from an input image signal, so that if the dots formed along a transverse direction are classified into plural groups depending on the plurality of timings, then preceding dots, which belong to a group having an earliest timing, are formed in a pale color;
depositing ink droplets of the preceding dots on the recording medium;
curing the droplets of the preceding dots by applying the ultraviolet light or the active light rays from a curing light source with respect to the droplets of the preceding dots deposited on the recording medium; and
ejecting droplets of subsequent dots from the recording head after the droplets of the preceding dots are cured.

Assignees

• Fujifilm Corp

Inventors

• Mishima Takahiro

Classifications

• B41J2/2117

  Ejecting white liquids · CPC title

• B41J2/2114

  Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence) · CPC title

• B41J2/2054

  by the variation of dot disposition or characteristics, e.g. dot number density, dot shape · CPC title

• B41J2/2132 Primary

  Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding (methods for local corrections by dot omission, image edge enhancement, or multi-pass mask selection G06K15/102; colour conversion H04N1/40) · CPC title

• B41J2/175 Primary

  Ink supply systems {; Circuit parts therefor} · CPC title