Canon Kabushiki Kaisha

Mitsutoshi Nagamura

Daigoro Kanematsu

Kazuo Suzuki

Naoko Baba

Satoshi Azuma

Yuhei Oikawa

Hiroaki Shirakawa

Yosuke Ishii

Tomomi Furuichi

Yoshinori Nakajima

Taku Yokozawa

Rie Takekoshi

Hiroshi Taira

Hiroaki Komatsu

Akihiro Tomida

Shingo Nishioka

Akihiro Kakinuma

Kazuhiko Sato

Asako Watanabe

Eiji Komamiya

Masataka Kato

Shin Genta

Masaharu Shimakawa

Takao Ogata

Sae Mogi

Reiji Hashimoto

Tomoki Yamamuro

Noboru Kunimine

Hiroshi Kawafuji

Akiko Aichi

Hiroto Kango

Sae Tabuchi

An object is to provide a full-line inkjet printing apparatus and a printing method that can suppress occurrence of image degradation in the case where a conveyance roller conveys a print medium and multipass printing is performed. The maximum conveyance amount in a return route is set to be smaller than a distance between the conveyance roller and a print head.

Inkjet printing apparatus and printing method with conveying print medium in first direction and second direction and with control of nip of conveyance rollers

Provided is an inkjet printing apparatus that can reduce smears on a back surface of a print result medium by reducing accumulation of ink in a platen while reducing generation of mist. To achieve this, an ink receiving portion of a platen is provided away from a support surface by a predetermined distance, is formed in a mesh shape by laying multiple linear members, and is formed as a guide member that guides the ink received in the ink receiving portion to an ink guide holes.

Inkjet printing apparatus

Images with high image quality having less time-difference unevenness are outputted in an inkjet printing apparatus that performs multi-pass printing using full-line inkjet print heads. For this purpose, a CPU is capable of setting a first printing method in which an image for a unit area is printed by a specified number of printing conveyance operations and a second printing method in which an image for a unit area is printed by a smaller number than the specified number of printing conveyance operations. The CPU sets conveyance conditions such that a taken time for one printing conveyance operation of the printing conveyance operations for a unit area in the second printing method is smaller than a taken time for one successive printing conveyance operation of the printing conveyance operations for a unit area in the first printing method.

Inkjet printing apparatus and inkjet printing method

An ink jet recording apparatus of a line-recording-head type includes one or more recording heads using the same ink and performs recording of an image by conveying a recording medium using multiple passes through a recording region of the recording head while the recording medium is repeatedly conveyed backward and forward to speed up recording and improve image quality. A recording head is controlled to provide that an amount of ink applied to a recording medium in a case where the recording medium is conveyed at a first speed is smaller than an amount of ink applied to the recording medium in a case where the recording medium is conveyed at a second speed higher than the first speed in both of a case where the recording medium is accelerated and a case where the recording medium is decelerated.

Ink jet recording apparatus

An object of the present invention is to quickly correct a temperature sensor for an ejection head by, both efficiently and in a brief time, estimating a detected temperature of the temperature sensor for the ejection head in a case where the temperature of the ejection head of liquid becomes sufficiently close to an environment temperature. The temperature of a print headis detected by a diode sensorand the environment temperature is detected by a thermistor. Based on a change in the detected temperature of the diode sensorat the time of filling of ink for the print head, the detected temperature of the diode sensorin a case where the temperature of the print headbecomes close to the environment temperature is estimated as an estimated detected temperature. Based on a difference between the estimated detected temperature and the environment temperature, a correction value of the detected temperature of the diode sensoris set.

Liquid ejection apparatus, correction method, and storage medium

A recording apparatus is capable of executing multiple types of different temperature control. A recording head of the recording apparatus has multiple temperature sensors disposed at different positions from each other in the recording head. Each of the multiple types of different temperature control is performed based on representative temperatures acquired using different combinations of the temperature sensors.

Ink jet printing apparatus and ink jet printing method

After printing is performed by driving only some printing elements, the other printing elements are driven so that kogation is deposited on the surface of the other printing elements.

A driving pulse to be applied is changed when an overlapped level of invert timing of driving pulse is large.

Recording elements are driven by changing a driving pulse applied thereto in accordance with information regarding a total number of times the recording elements have been driven.

Inkjet recording apparatus and inkjet recording method

A driving pulse to be applied to a plurality of print elements in a print element array is decided based on the deviation of the discharge amount from the print elements.

In a case where the temperature difference between first and second time points detected by a first temperature sensor provided in a print head is lower than a threshold temperature, a temperature correction for the first temperature sensor is performed based on a temperature detected by a second temperature sensor provided within a printing apparatus thereof. In a case where the temperature difference is higher than the threshold temperature, a temperature correction for the first temperature sensor is performed without using the temperature detected by the second temperature sensor.

Ink-jet printing apparatus and ink-jet printing method

According to an aspect of the present invention, temperatures at a plurality of different positions in an array direction in an ejection opening array are detected, and heating by a heating element is executed in a case where a temperature difference between the temperatures is higher than a predetermined threshold.

Image recording apparatus, image recording method, and non-transitory computer-readable storage medium

A data processing apparatus, a data processing method and an inkjet printing apparatus are offered that are capable of reducing, in any kind of image, the occurrence of color unevenness while achieving a high speed output via a bi-directional printing. In order to achieve this, forward scan print ratio and backward scan print ratio with respect to a predetermined area comprising a plurality of pixels is set based on multi-value image data of the predetermined area. Next, binary print data for the forward scans and binary print data for the backward scans at the predetermined area is generated based on the multi-value image data and the set print ratios. According to such a configuration it is possible to increase the ratio of bi-directional printing with respect to areas at which color unevenness appears with difficulty, and increase the ratio of one-directional printing at areas where color unevenness appears with ease.

Data processing apparatus, data processing method and inkjet printing apparatus

First heating is started at a first time point, and a second heating having higher heating energy than the first heating is started at a second time point subsequent to the first time point.

Growing community of inventors

Tokyo, Japan

Mitsutoshi Nagamura