Canon Kabushiki Kaisha

Koyo Midorikawa

Noritaka Mochizuki

Setsuo Minami

Yoshiya Matsui

Atsuo Tsunoda

Hidetoshi Murase

Mikio Suzuta

Masazumi Moriwaki

Masami Ikeda

Toshio Kashino

Takashi Watanabe

Akio Saito

Kazuaki Masuda

Akira Goto

Nobuyuki Kuwabara

Hiroshi Kono

Toru Okumura

Takashi Kanzaki

An ink jet recording head, which can be used in a recording apparatus, is manufactured by preparing a first base plate provided with an energy generating structure for generating energy to discharge ink, preparing a second base plate provided with a discharge opening plate member on which are to be formed ink discharge openings for discharging the ink and recessed portions for forming ink flow paths, the ink flow paths being communicated with the discharge openings, and applying an ink repellant treatment on a surface of the discharge opening plate at a side where the ink is to be discharged in at least an area where the discharge openings are to be formed. The discharge opening is formed on the discharge opening plate by irradiating a laser beam on a rear surface of the discharge opening plate at the opposite side from where the ink is discharged, and the first base plate and second base plate are connected so that the energy generating structure and recessed portion face one another to form the ink flow paths.

Method for manufacturing an ink jet head having a treated surface, ink

The present invention relates to a method for manufacturing an ink jet recording head having an ink path communicated with a discharge opening, a discharge energy generating element disposed in the ink path and a discharge opening plate on which the discharge opening is formed. The discharge opening plate is attached to an end surface of the ink path. The discharge opening is formed by irradiating an excimer laser light on the discharge opening plate from a side of the plate which is attached to the ink path.

Ink jet head and manufacturing method thereof, and ink jet apparatus

A projecting device is disclosed which has plural element lens systems arranged in at least two rows in a staggered fashion in two grooved blocks, with one row displaced relative to the adjacent row by a distance equal to half the pitch of the adjacent row. Each lens system is composed of at least one bar lens for imaging a part of the object as a part of the corresponding image. An opaque elastomer material fills the space between the rows for preventing light from entering into the space while allowing the positional relation between the rows to be fine-adjusted.

Projecting device

This specification discloses a projection device in which bar lenses of plastic, each having a great length in the direction of its optical axis as compared with its effective diameter, of the lenses are arranged in the form of a predetermined array. The bar lenses are shielded from the outside atmosphere by a holding member capable of easily setting the lenses. Further, transparent plates, such as glass plates or the like, are provided at the incidence end and the emergence end to seal the holding member, so that there occurs no deterioration of the predetermined optical performance resulting from variations in the environmental humidity which would otherwise cause variations in the plastic material.

Projection device

A projecting device having an array, in a plane perpendicular to the optical axis, of plural element lens systems each axially provided with two bar lenses of an axial length larger than the effective diameter thereof, characterized by the presence of an intermediate ring positioned between two bar lenses for extracting the effective beam emerging from the first bar lens and entering the second bar lens and providing a determined light intensity distribution on the projection plane.

In a slit exposure type copying machine, a projection device basically includes transmission type element lens systems each including a lens having a great length in the direction of the optic axis thereof as compared with the effective diameter thereof. A part area of an original is projected upon a predetermined part area on an image plane and the light intensity distribution of the projected part area has a predetermined central area controlled by lens aperture eclipse and extending diametrically from at least the optic axis and a marginal area lying outwardly of the central area and weak in light intensity. A plurality of such element lens systems are substantially equidistantly arranged in the lengthwise direction of the slit in a plane perpendicular to the optic axis so that the marginal areas in at least the element lens systems are superposed upon one another. Further, the element lens systems are arranged in a plurality of rows so that each row is positioned just intermediate the adjacent row, whereby even if there is an error in the arrangement interval of the element lens systems, the uniformity, in the slit area, of the exposure amount time-integrated in the original scanning direction is maintained.

This specification discloses a compact projection device in which lens systems extending in the direction of the optic axis for projecting a part area of an object upon a predetermined part area on an image plane (hereinafter referred to as element lens systems) are initially set by a lens holding member having groove portions or hole portions extending in the direction of the optic axis, the distributions of intensity of light of the element lens systems on the image plane are controlled by an aperture eclipse such that the intensity of light is weaker in the marginal area than at least in the central area, a plurality of such element lens systems are arranged in a predetermined direction in a plane perpendicular to the optic axis and the distributions of intensity of light of the element lens systems are suitably superposed upon one another at least in the marginal area to provide uniformity of the distribution of the exposure amount integrated in the scanning direction with respect to the lengthwise direction of the slit of a copying machine of the slit exposure type. The element lens system each comprises two bar lenses each having a great length in the direction of the optic axis thereof as compared with the effective diameter thereof, and an intermediate image is once formed between the bar lenses and finally, a one-to-one magnification image is provided. The element lens systems are arranged in more than two rows in a honeycomb-like fashion such that the element lens systems of each row are positioned intermediate the element lens systems of the other row as viewed in the direction of the optic axis, whereby the uniformity of the distribution of the exposure amount integrated in the scanning direction with respect to the lengthwise direction of the slit is improved.

Growing community of inventors

Tokyo, Japan

Koyo Midorikawa