Canon Kabushiki Kaisha

Lion Corporation

Seiji Abe

Junichi Nakagawa

Kouta Murasawa

Yumi Yanai

Hiroshi Mori

Norihiro Kawatoko

Hiromitsu Yamaguchi

Naoko Baba

Masashi Hayashi

Yuki Igarashi

Yuki Ishida

Mitsuru Uratani

Yuki Omagari

Eiji Komamiya

Kentaro Muro

Tetsuya Edamura

Masaaki Obayashi

Keiji Kuriyama

Masayoshi Nakamura

Mitsuyoshi Yazaki

Koji Masamizu

Teruo Magari

Kiyoshi Morohara

Shigeru Yanaba

Masataka Shiobara

An object of the present disclosure is to implement, at a low cost, highly accurate color calibration in a printing apparatus that performs printing using fluorescent ink. One embodiment of the present invention is an image processing apparatus that includes: a processing unit configured to perform processing relating to color calibration in a printing apparatus that prints an image on a printing medium using fluorescent printing material; and an execution unit configured to perform calibration processing of the printing apparatus based on a measured value that is obtained by measuring a patch chart for obtaining information on an amount of application of the fluorescent printing material in the printing apparatus, wherein a patch included in the patch chart is printed with the fluorescent printing material and subtractive color mixture printing material and at least one dot of the subtractive color mixture printing material covers a dot of the fluorescent printing material.

Image processing apparatus, image processing method, and storage medium

A print medium is conveyed in a first direction and a printing head prints an image on the print medium by using a printable region of the print head that extends in a second direction crossing the first direction. Storing units can feed multiple sorts of print media. Among the multiple sorts of the print media, the print medium to print a check pattern for checking a printing state of the printing head is selected as the print medium to be fed from the corresponding storing unit. The check pattern is printed on the print medium by using a portion of the printable region of the printing head corresponding to a size of the print medium fed from the storing unit.

Printing apparatus, printing method, and storage medium

A printing apparatus includes a circulation pathway that circulates an ink between a pressure chamber of a printing head and the outside thereof. The number of eject of the ink to be ejected from an ejection port of the printing head to a unit printing area is set according to a concentration of the ink in the circulation pathway.

From among a plurality of elements included in a printing head and arrayed in a predetermined direction, a faulty element that is unable to form dots properly on a printing medium is identified. At least one of correction processing for increasing a value of multi-valued input image data corresponding to the faulty element and correction processing for decreasing a threshold in a quantization process for the faulty element is performed. Complementary dot data is generated for the faulty element by taking the dot data generated for the identified faulty element as dot data corresponding to an element near the identified faulty element in the predetermined direction.

Printing apparatus, printing method, and printing system

According to the present invention, patch data is printed in such a manner that the length of a low-optical-density patch is small and the length of a high-optical-density patch is large. In addition, the measurement is performed by a sensor that measures at a constant scanning speed. Therefore, SN of a dark patch having a high optical density is improved, and a patch chart can be measured in a short time.

Printing system for printing patches having different length to measure gradation values

An image processing apparatus includes a measurement unit configured to read a patch image for a calibration which is printed on a recorded medium by a printing apparatus and measure a density of the patch image, a reception unit configured to receive spectral reflection factor information measured by reading the patch image for the calibration printed on the recorded medium by using a measurement device capable of measuring a spectral reflection factor at every predetermined wavelengths, and a processing unit configured to perform a calibration for a printing using the recorded medium by the printing apparatus on the basis of the density measured by the measurement unit and the spectral reflection factor information received by the reception unit.

Image processing apparatus and method for performing calibration for printing

A liquid detergent composition comprising:

Zeolite containing liquid detergent composition

Non-phosphate laundry detergents in granular form having good detergency, good granular strength and little tendency to deposit zeolite on fabrics are obtained by using a combination of olefin sulfonate, linear alkylbenzene sulfonate, sodium silicate and type A zeolite detergent builder.

Granular detergent containing zeolite, silicate, LAS and olefin sulfonate

Growing community of inventors

Kawasaki, Japan

Seiji Abe