Canon Kabushiki Kaisha

Tetsushi Kohno

Masaaki Endo

Takeaki Nakano

Norio Shimura

Masaya Kikuta

Hirokazu Kameda

Manabu Kuchiki

Masanori Echigo

Munetaka Yamaguchi

Hiroshi Tajika

Hiroyuki Ishinaga

Toshio Kashino

Yoshie Asakawa

Shinya Matsui

Mikio Shiga

Akira Nagatomo

Shigeki Abe

Shigehi Abe

When the time period is night, processing advances to step Sto set the initialization speed of a line feed motor to the first speed (v1), and to step Sto execute initialization operation of the line feed motor at the first speed (v1). When the time period is morning or daytime, the processing advances to step Sto detect a cover open/closed state. When the cover is open, the processing advances to step Sto set the initialization speed of the line feed motor to the first speed (v1). When the cover is closed, the processing advances to step Sto set the initialization speed of the line feed motor to the second speed (v2) which is higher than the first speed (v1). The processing advances to step Sto execute initialization operation of the line feed motor at the second speed (v2).

Printing apparatus and control method therefor

Disclosed is a readily expandable printing apparatus which, despite having only a small memory capacity, is applicable to a number of types of printing processing. On the basis of the type of ink cartridge loaded in the printing apparatus and the content of information that is to be printed, a host computer retrieves from its own memory a program to be run in the printing apparatus. The host computer then transfers the retrieved program to the printing apparatus. The later stores the transferred program in an internal RAM and, when print data has been transferred from the host computer, executes the program.

Printing apparatus, method of controlling same, information processor connected thereto, system and storage medium

An ink jet printing system is provided which has an ink jet printing apparatus and a host and which alleviates a data processing load on the ink jet printing apparatus, prevents a reduction in a printing operation speed, and realizes a cost reduction. The ink jet printing apparatus of this invention has an ink receiving member for receiving waste ink ejected onto an overrunning area outside edges of a print medium and an accumulated value memory section for storing an accumulated value equivalent to waste ink volumes ejected onto the ink receiving member. The host includes a waste ink volume setting section for obtaining a value equivalent to a waste ink volume and a data sending section for sending data to the ink jet printing apparatus. The accumulated value memory section of the ink jet printing apparatus stores the accumulated value equivalent to waste ink volumes obtained by the host.

Data processing apparatus, data processing method, program, and ink jet printing system

A printing apparatus of the invention acquires a velocity and an acceleration of a printing medium when a rear end of the printing medium passes through a detection lever. A correction amount for the rear end of the printing medium is determined in accordance with the velocity and the acceleration of the printing medium. The correction amount is a transportation amount of the printing medium during a physical return time after the rear end of the printing medium passes through the detection lever until the detection lever is detected by a sensor. A remaining region from a printing position of a print head up to the rear end of the printing medium is controlled in accordance with the correction amount for the rear end of printing medium.

Printing apparatus and method for printing an image

In an inkjet printer having primary power-turn-on means for physically supplying power to the printer and secondary power-turn-on means for bringing the printer into a state where functions are enabled, ink consumption due to a suction recovery processing is reduced. The number of times that the secondary power supply is on is counted. The count value is stored in a non-volatile memory. It is judged whether the count value is above a predetermined value when the secondary power supply becomes on, if yes, the recovery processing is executed. The count value and the contents of the memory are then cleared. The counting is prohibited till primary power supply is off. As the above contents is retained even after the primary power supply is off, necessity of recovery processing when the secondary power supply becomes on is judged based on the state before the primary power supply was off.

Printing apparatus and printing system

In an inkjet printer having device for executing recovery processing by ink suction to make the ink ejection state of a printing head favorable, increase in ink consumption due to recovery processing is suppressed properly while maintaining ejection quality. When it is judged that recovery processing is necessary due to exchange of a head or an ink tank, this information is stored in a RAM and an EEPROM. Only before execution of print, recovery processing is executed when it is determined that the recovery processing is necessary based on the information. At the execution, the information is cleared to a recovery unnecessary state. As the information is held in the EEPROM, necessity of the recovery processing after power supply ON is determined based on a recovery processing execution state before the power supply was turned off. Therefore, suction recovery processing is executed without waste at a proper timing.

Inkjet printing apparatus and printing system

Liquid ejecting head and head cartridge capable of adjusting energy supplied thereto, liquid ejecting device provided with the head and head cartridge, and recording system

A method for standardizing an ink jet recording head is arranged to be capable of utilizing the characteristics of each of recording heads to the maximum, while maintaining the compatibility between them. Particularly, the compatibility is maintained between the novel type recording head whose interior is partitioned into two layers through movable members, and a conventional type recording head. When the conventional type recording head is mounted on a novel type recording apparatus, all the requirements are handled by the novel type recording apparatus side to drive the conventional type recording head under a condition regulated for the conventional type recording head. When the novel type recording head is mounted on a conventional type recording apparatus, it is driven within the capacity of performance of the conventional type recording apparatus. A discriminator for discriminating the kind of mounted recording head is provided for each of the recording apparatuses. In this way, various control operations are attained. When the structure is arranged to use separate recording heads and ink tanks, the compatibility is maintained, while utilizing the difference in characteristics of the novel type recording head and ink, and those of the conventional type recording head and ink to the maximum by means of discriminating one kind of ink from another.

Method for standardizing an ink jet recording head and an ink jet

When recording original data having a size greater than the height of a recording head, high-quality recording can be performed without unnatural connecting portions by performing smoothing processing for the original data. The original data is divided so as to have a size smaller than the height of the recording head, in such a manner that parts of divided data overlap with each other.

Growing community of inventors

Tokyo, Japan

Tetsushi Kohno