Canon Kabushiki Kaisha

Canon Denshi Kabushiki Kaisha

Hiroshi Kyogoku

Takashi Sasaki

Kenji Takahashi

Shigemitsu Tazaki

Yoshinobu Shiraiwa

Shigeru Okamura

Koji Terasawa

Shinya Hirai

Mitsuaki Seki

Mineo Nozaki

Hiroshi Matsuoka

Takatoshi Ohta

Shigeru Toyomura

Shigemitsu Tasaki

Yasuo Ito

Akira Nagatomo

Yukio Kasugayama

Yoshihumi Hattori

Masahiro Rachi

Keiji Nagira

Shumpei Takenaka

Noboru Nabeta

Shigeru Tsuyukubo

A liquid accommodating container having a configuration that allows ink to be substantially used up, does not require an increase in size or a complicated construction, and can be fabricated at lower costs. The container includes an ink chamber for holding ink and having an upper air layer. A second chamber is provided in the upper air layer. A partition divides the second chamber into an ink absorber chamber that accommodates an ink absorber and a sub ink chamber for storing a small amount of ink. A third chamber defines a space between the atmosphere and the ink absorber. An upper portion of the sub ink chamber adjacent to the ink chamber is open so as to provide communication between the upper air layer and the atmosphere through the intermediary of the sub ink chamber and the ink absorber chamber in this order. An atmosphere communicating hole is defined. A print head that discharges ink of the ink chamber is provided at the bottom of the container.

Ink tank and ink supplying apparatus

In order to print an image at a high speed without using any large-capacity power supply unit, the image to be printed is segmented into grayscale-specific areas before printing, and the cumulative number of printing elements required to print the respective grayscale-specific areas is counted to predict a necessary power. On the basis of the prediction result, the image is then printed by selecting the highest convey speed from convey speeds at which upper limit powers used and rated average power consumption are determined. This makes it possible to provide an image printing method and apparatus which can realize high-speed image printing.

Image printing method and apparatus

A plurality of image data to print a panorama image is selected from a plurality of image data photographed by a digital camera. The selected plurality of image data is read out and a panorama image composition processing is executed. The panorama image is printed on the basis of the image data which was panorama image composition processed and is printed as a panorama image without transmitting through a personal computer.

Printer, control method of printer, and storage medium for storing control program of printer

A recording apparatus, which uses an ink sheet having ink of plural colors coated sequentially thereon and transferring ink to a recording medium for recording in accordance with image data, is capable of recording on a plurality of recording media having different sizes, at the same time, being capable of using selectively plural ink sheets each corresponding to each of the plural recording media of different sizes. This recording apparatus comprises a device for detecting the size of a recording medium to detect the size of the recording medium to be used for recording; a device for detecting the size of an ink sheet to detect the size of a recording medium corresponding to the ink sheet to be used for recording; and controlling a device to control the recording operation in accordance with the size of the detected recording medium and the size of the recording medium corresponding to the detected ink sheet. With these devices thus arranged, it is made possible to record without recording improperly any smaller images that may be unfit for the size of the recording sheet or staining the platen and others in the interior of the apparatus even when the recording medium and the ink sheet installed thereon are different in its sizes or the user does not designate the size of the recording medium to be used.

Recording apparatus, recording method, and storage medium

There are disclosed a printing method and apparatus which can prevent an overcoat layer formed on the surface of a printing medium for the purpose of protecting a printed image from being torn off or peeling from the printing medium so that an overcoat agent will not become a contaminant and stain a print in the printing apparatus, cause image print abnormality, or become fine or powder dust in the environment. This apparatus prints an image on a printing medium having perforations that allow easy cutoff of margin portions by applying ink to the printing medium across the perforations, and forms a protection layer on the printing medium on which the image has been formed by transferring a protection agent avoiding the perforation portions.

Printing method and apparatus

A recording apparatus, which uses an ink sheet having ink of plural colors coated sequentially thereon and transferring ink to a recording medium for recording in accordance with image data, is capable of recording on a plurality of recording media having different sizes, at the same time, being capable of using selectively plural ink sheets each corresponding to each of the plural recording media of different sizes. This recording apparatus comprises a device for detecting the size of a recording medium to detect the size of the recording medium to be used for recording; a device for detecting the size of an ink sheet to detect the size of a recording medium corresponding to the ink sheet to be used for recording; and a controlling device to control the recording operation in accordance with the size of the detected recording medium and the size of the recording medium corresponding to the detected ink sheet. With these devices thus arranged, it is made possible to record without recording improperly any smaller images that may be unfit for the size of the recording sheet or staining the platen and others in the interior of the apparatus even when the recording medium and the ink sheet installed thereon are different in its sizes or the user does not designate the size of the recording medium to be used.

A video data processing system includes a CPU, a video memory, video data shift registers, a ternary counter, an octal counter, a blanking counter, and a flip-flop. Video data is shifted in the shift registers in response to an output from the ternary counter. The outputs from the ternary counter are counted by the octal counter, and an output from the octal counter is counted by the blanking counter so as to count down a blanking parameter. A borrow output from the blanking sets the flip-flop to hold video data which is then stored in the video memory. This operation is repeated up to the last H along the main scanning direction. The initial value of the blanking parameter is incremented by one by one to repeat main scanning inputs along a subscanning direction.

Video data processing system

Image reading apparatus having a D/A converter with a controllable output includes a light source for illuminating an original image. A reading device is provided for photoelectrically reading the original image illuminated by the light source and generating an analog image signal. A D/A converter is provided having a digital input terminal, an analog output terminal, and a reference terminal. The analog image signal generated from the reading device is applied to the reference terminal. The D/A converter attenuates the level of the analog image signal applied to the reference terminal based on a damping factor corresponding to the digital data applied to the digital input terminal. The thus-attenuated analog image signal is then output to the analog output terminal. An amplifier is provided for amplifying the attenuated analog image signal output from the analog output terminal of the D/A converter. An A/D converter is provided for converting the amplified analog image signal output from the amplifier into a digital image signal. Control circuitry is provided for controlling the digital data applied to the digital input terminal of the D/A converter to cause the analog image signal supplied to the A/D converter to have a predetermined level. This provides an analog image signal having a constant signal level even when the brightness of the light source, (e.g., a fluorescent lamp) varies widely.

Image reading apparatus having a D/A converter with a controllable output

A recording apparatus in which ink flows out from the end of a recording head to effect recording on a recording medium, has in a portion of an ink supply path leading from an ink container to the recording head a filter substantially parallel to the direction of liquid flow in the supply path and having a number of minute communication bores.

Bundled-tube filter for recording apparatus

A printer for printing characters on a recording medium includes, a printing drum provided on a first portion and a second portion of the outer periphery thereof respectively with a first set of type faces and a second set of type faces, the first set of type faces being adapted to print characters of odd or even digit positions in a row of characters to be printed while the second set of type faces is adapted to print remaining characters of even or odd digit positions in the row of characters to be printed, the top surface of each of the first and second sets of type faces being retracted from the outer periphery of the printing drum, and each face being provided with a resilient member on at least a part of circumference thereof; a hammer unit positioned in the printing drum and provided with a plurality of hammers, the hammers being adapted to selectively thrust faces of the first and second sets through the outer periphery of the printing drum to bring the hammers in pressure contact with the recording medium; a roller integral with the hammer unit and adapted to press the type faces of the first and second sets thereby causing the faces to project from the outer periphery of the printing drum; and an ink roller for applying ink onto the faces of the first and second sets maintained in projecting position by means of the roller.

Printer

Disclosed is an electronic apparatus provided with a printer for printing characters on a recording material with at least two different colors of ink. The apparatus has means for setting a special printing mode. In the special printing mode, data are printed with ink in the first color while printing a background pattern with ink in the second color thereby forming a print with a background pattern.

Electronic apparatus with printer

A residual ink detection mechanism for detecting the amount of residual ink within an ink container of an ink jet printer is disclosed wherein the ink container comprises a flexible bag, and electrodes are provided at least at opposite positions of this bag to constitute a capacitor, so that the amount of residual ink within the ink container may be detected by detecting the electrostatic capacity between these paired electrodes.

Residual ink detection mechanism

Ink jet recording apparatus includes a guide member provided in parallel to a transversal direction of a recording sheet, a carriage having a recording head and adapted to move on the guide, a signal generator provided in parallel to the guide, and a control unit for causing the signal generator to detect position and speed of the carriage.

Recording apparatus

A recording apparatus is disclosed which is improved in operability by linking a printing head protection device with a switch mechanism. The printing head comprises an ink jet head and the switch mechanism comprises a power source switch, print switch etc.

There is an ink jet printer in which an electrostriction element is associated with at least a part of an ink chamber for causing ink emission from an ink nozzle connected to said ink chamber in response to a voltage applied to the electrostriction element. Said voltage is changed in response to the ambient temperature and made higher or lower respectively in a low or high temperature.

Growing community of inventors

Kawasaki, Japan

Hiroshi Kyogoku