Canon Kabushiki Kaisha

Tetsuro Honda

Shuji Koyama

Keiji Matsumoto

Kazuhiro Asai

Kenji Fujii

Jun Yamamuro

Masaki Ohsumi

Kunihito Uohashi

Sakai Yokoyama

Keisuke Kishimoto

Mitsuru Chida

Kenta Furusawa

Kouji Sasaki

The present invention provides a process for producing a liquid ejection head, the process including: (1) forming a mold pattern of a liquid flow path and a base pattern surrounding the mold pattern on a substrate, (2) disposing a covering layer to cover the mold pattern and the base pattern, (3) forming at least an ejection orifice in the covering layer to form an orifice plate, and (4) removing the mold pattern and the base pattern, in which the base pattern has such a form that the orifice plate is formed to have a side wall portion constituting a side wall of the liquid flow path and a plurality of support structures that are disposed on the substrate in a peripheral region of the side wall portion and support an upper surface portion constituting an upper wall of the orifice plate.

Process for producing liquid ejection head

A process for producing an ejection orifice forming member including the steps of forming a laminate including a first negative photosensitive resin layer that contains a first photoacid generator, and a second negative photosensitive resin layer that is formed on the first negative photosensitive resin layer and contains a second photoacid generator; forming a first latent image and a second latent image on the first negative photosensitive resin layer and the second negative photosensitive resin layer, respectively, by collectively subjecting the first negative photosensitive resin layer and the second negative photosensitive resin layer to exposure; performing a heat treatment after the exposure; and forming the ejection orifice by a development treatment. The first photoacid generator in the first latent image has an acid diffusion length greater than the acid diffusion length of the second photoacid generator in the second latent image.

Process for producing ejection orifice forming member and liquid ejection head

A method for manufacturing a recording head including forming a flow-channel side-wall forming layer which contains a photosensitive resin, on a substrate having ejection energy generating elements and wiring thereon; exposing the flow-channel side-wall forming layer to light, and optically determining a flow channel; forming a shape stabilizing layer which contains a photosensitive resin; forming an ejection orifice forming layer which contains a photopolymerization initiator and a negative photosensitive resin; exposing the ejection orifice forming layer to light, and optically determining an ejection orifice; and developing the ejection orifice forming layer, shape stabilizing layer, and flow-channel side-wall forming layer, in the order named. The photosensitive resin in the shape stabilizing layer is a material to be cured by a component that is produced upon the exposure of the ejection orifice forming layer and derives from the photopolymerization initiator.

Method for manufacturing recording head

The present invention is a method of manufacturing a liquid discharge head, which includes providing a substrate on which a solid member is disposed to surround a region that becomes the flow path, and a metal layer made of a metal or a metal compound is disposed inside of the region, forming a mold made of a metal or a metal compound inside of the region, disposing a cover layer made of a resin to cover the solid member and the mold in contact with the solid member and the mold wherein the solid member and the metal are formed with a distance therebetween, and removing the mold to form the flow path.

Method of manufacturing liquid discharge head

A liquid ejection head includes a substrate having an energy-generating device configured to generate energy used for ejecting a liquid from an orifice; a transparent channel wall member forming an inner wall of a channel leading to the orifice; and an intermediate layer disposed between and in contact with a surface of the substrate and the channel wall member and having a refractive index different from a refractive index of the channel wall member. The intermediate layer has a first outer end surface forming contours of a symbol as viewed in a direction from the orifice toward the substrate and making a first angle with the surface of the substrate and a second outer end surface facing the channel and making a second angle with the surface of the substrate. The first angle is an obtuse angle. The second angle is smaller than the first angle.

Growing community of inventors

Oita, Japan

Tetsuro Honda