Multilayer structured element substrate, printhead, and printing apparatus

A printhead including a plurality of multilayer structured element substrates, each element substrate comprising:

• an element array in which a plurality of print elements and a dummy element are arranged the dummy element not contributing to printing;
• and
• a first circuit related to driving the plurality of print elements forming the element array, the first circuit being provided so as to be included in a structure of the element substrate,
• wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate, and
• the plurality of element substrates are arranged along a direction of the element array and are configured to discharge ink by driving the print elements.

A printing apparatus for printing an image by discharging ink to a print medium from a printhead, wherein the printhead includes a plurality of multilayer structured element substrates, each element substrate comprising:

• an element array in which a plurality of print elements and a dummy element are arranged the dummy element not contributing to printing;
• and
• a first circuit related to driving the plurality of print elements forming the element array, the first circuit being provided so as to be included in a structure of the element substrate,
• wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate, and
• the plurality of element substrates are arranged along a direction of the element array and are configured to discharge ink by driving the print elements.

A printhead including a plurality of multilayer structured element substrates, each element substrate comprising:

• an element array in which a plurality of print elements are arranged and a dummy element not contributing to printing is included;
• and
• a first circuit related to driving the plurality of print elements forming the element array,
• a plurality of second circuits configured to drive the plurality of print elements, respectively,
• wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate,
• the plurality of element substrates are arranged along a direction of the element array and are configured to discharge ink by driving the print elements, and
• the first circuit supplies a data signal and a clock signal to be used by the plurality of second circuits to drive the plurality of print elements.

A printhead including a plurality of multilayer structured element substrates, each element substrate comprising:

• an element array in which a plurality of print elements are arranged and a dummy element not contributing to printing is included;
• and
• a first circuit related to driving the plurality of print elements forming the element array,
• wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate,
• the plurality of element substrates are arranged along a direction of the element array and are configured to discharge ink by driving the print elements, and
• the first circuit is a decoder configured to expand a data signal for driving the plurality of print elements.

A printing apparatus for printing an image by discharging ink to a print medium from a printhead, wherein the printhead includes a plurality of multilayer structured element substrates, each element substrate comprising:

• an element array in which a plurality of print elements are arranged and a dummy element not contributing to printing is included;
• and
• a first circuit related to driving the plurality of print elements forming the element array,
• a plurality of second circuits configured to drive the plurality of print elements, respectively,
• wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate,
• the plurality of element substrates are arranged along a direction of the element array and are configured to discharge ink by driving the print elements, and
• the first circuit supplies a data signal and a clock signal to be used by the plurality of second circuits to drive the plurality of print elements.

A printing apparatus for printing an image by discharging ink to a print medium from a printhead, wherein the printhead includes a plurality of multilayer structured element substrates, each element substrate comprising:

• an element array in which a plurality of print elements are arranged and a dummy element not contributing to printing is included;
• and
• a first circuit related to driving the plurality of print elements forming the element array,
• wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate,
• the plurality of element substrates are arranged along a direction of the element array and are configured to discharge ink by driving the print elements, and
• the first circuit is a decoder configured to expand a data signal for driving the plurality of print elements.