Recording apparatus, recording head and substrate therefor

A substrate, comprising:

• a plurality of recording elements in the form of liquid ejection energy generating means which are integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements, and connected in a circuit for supplying electric signals to said recording elements;
• an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are supplied serially and which are used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said electrical contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
• a first common lead electrically connected to said liquid ejection energy generating means to supply a driving voltage to said recording elements;
• a second common lead electrically connected to said selector elements to electrically ground them;
• said liquid ejection energy generating means being disposed at a position closer to one end portion of said substrate than said first common lead;
• said logic circuit being disposed at an end of said substrate which is opposite from said one end;
• and
• said second common lead being disposed between said liquid ejection energy generating means and said selector elements or between said selector elements and said logic circuit.

A liquid jet head comprising:

• a plurality of liquid passages communicating to liquid ejecting portion for ejecting liquid;
• a common liquid chamber for supplying liquid to said liquid passage;
• a substrate, said substrate comprising:
• a plurality of linearly arranged recording elements in the form of liquid ejection energy generating means for applying liquid ejection energy to the liquid in said liquid passages, said recording elements being integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements and connected in a circuit for supplying electric driving current to said recording elements;
• said circuit including a first common lead electrically connected to each of said plurality of electrical leads to supply a driving voltage to said recording elements;
• an electrical contact for external electrical connection for reception of image signals used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a second common lead electrically connected to each of said plurality of selector elements in said circuit to electrically ground them;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said electrical contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit for holding the parallel signals and connected to supply them to the selector elements;
• wherein said recording elements, said selector elements, and said logic circuit are disposed in the order stated from an end of said substrate, said recording elements being disposed at positions beyond said first and second common leads toward said end of said substrate, and said liquid ejection energy generating means and said elector elements being disposed in one-to-one correspondence.

A liquid jet head, comprising:

• a plurality of liquid passages communicating with a liquid ejecting portion for ejecting a liquid;
• and
• a substrate, said substrate comprising:
• a plurality of recording elements in the form of ejection energy generating means for applying liquid ejection energy to the liquid in said liquid passages, said recording elements being integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements and connected in a circuit for supplying electric signals to said recording elements;
• an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said electrical contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
• a first common lead electrically connected to said recording elements to supply a driving voltage to said recording elements, said first common lead being disposed along a direction of arrangement of said recording elements;
• a second common lead electrically connected to said selector elements to electrically ground them;
• said first common lead and said liquid ejection energy generating means being disposed at one end portion of said substrate;
• said logic circuit being disposed at an end of said substrate which is opposite from said one end;
• and
• said second common lead being disposed between said liquid ejection energy generating means and said selector elements or between said selector elements and said logic circuit
• said liquid ejection energy generating means being disposed at a position closer to one end portion of said substrate than said first common lead;
• said logic circuit being disposed at an end of said substrate which is opposite from said one end;
• and
• said second common lead being disposed between said liquid ejection energy generating means and said selector elements or between said selector elements and said logic circuit.

A liquid jet head apparatus for effecting liquid jet operation with liquid droplets ejected, comprising:

• a liquid jet head comprising:
• a plurality of liquid passages communicating to liquid ejecting portion for ejecting liquid;
• a common liquid chamber for supplying liquid to said liquid passages;
• a substrate, said substrate comprising:
• a plurality of linearly arranged recording elements in the form of liquid ejection energy generating means for applying liquid ejection energy to the liquid in said liquid passages, said recording elements being integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements;
• said circuit including a first common lead electrically connected to each of said plurality of electrical leads to supply a driving voltage to said recording elements;
• an electrical contact for external electrical connection for reception of image signals used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a second common lead electrically connected to each of said plurality of selector elements in said circuit to electrically ground them;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said electrical contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
• wherein said recording elements, said selector elements, and said logic circuit are disposed in the order stated from an end of said substrate, said recording elements being disposed at positions beyond said first and second common leads toward said end of said substrate, and said liquid ejection energy generating means and said elector elements being disposed in one-to-one correspondence.

A liquid jet apparatus for effecting liquid jet operation with liquid droplets ejected, comprising:

• a liquid jet head comprising:
• a plurality of liquid passages communicating with a liquid ejecting portion for ejecting a liquid;
• and
• a substrate, said substrate comprising:
• a plurality of recording elements in the form of liquid ejection energy generating means for applying liquid ejection energy to the liquid in said liquid passages, said recording elements being integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements, and connected in a circuit for supplying electric signals to said recording elements;
• an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals which are applied to said recording elements and having a circuit electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
• a first common lead electrically connected to said recording elements to supply a driving voltage to said recording elements, said first common lead extending in a direction along which said recording elements are arranged;
• and
• a second common lead electrically connected to said selector elements to electrically ground them;
• said liquid ejection energy generating means being disposed at a position closer to one end portion of said substrate than said first common lead;
• said logic circuit being disposed at an end of said substrate which is opposite from said one end;
• and
• said second common lead being disposed between said liquid ejection energy generating means and said selector elements or between said selector elements and said logic circuit.

A liquid jet head cartridge, comprising:

• a liquid jet head comprising:
• a plurality of liquid passages communicating to liquid ejecting portion for ejecting liquid;
• a common liquid chamber for supplying liquid to said liquid passage;
• a substrate, said substrate comprising:
• a plurality of linearly arranged recording elements in the form of liquid ejection energy generating means for applying liquid ejection energy to the liquid in said liquid passages, said recording elements being integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements and connected in a circuit for supplying electric signals to said recording elements;
• said circuit including a first common lead electrically connected to each of said plurality of electrical leads to supply a driving voltage to said recording elements;
• an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a second common lead electrically connected to each of said plurality of selector elements in said circuit to electrically ground them;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact and for converting said signals into parallel signals and having a circuit for holding the parallel signals and connected to supply them to the selector elements;
• wherein said recording elements, said selector elements, and said logic circuit are disposed in the order stated from an end of said substrate, said recording elements being disposed at positions beyond said first and second common leads toward said end of said substrate, and said liquid ejection energy generating means and said elector elements being disposed in one-to-one correspondence and
• an ink container for containing an ink to be supplied to said liquid jet head.

A liquid jet head cartridge, comprising:

• a liquid jet head comprising:
• a plurality of liquid passages communicating with a liquid ejecting portion for ejecting a liquid;
• and
• a substrate, said substrate comprising:
• a plurality of recording elements in the form of liquid ejection energy generating means for applying liquid ejection energy to the liquid in said liquid passages, said recording elements being integrally built into said substrate;
• a plurality of electrical leads, electrically connected to said recording elements, and connected in a circuit for supplying electric signals to said recording elements;
• an electrical contact for external electrical connection for reception of image signals which are supplied serially and which are used for driving said recording elements;
• a plurality of selector elements integrally built into said substrate and electrically connected to said recording elements for selectively controlling the application of driving current to said recording elements;
• a logic circuit, integrally built into said substrate, and having a circuit connected to said electrical contact for receiving said image signals and for converting said image signals which are serially supplied to said electrical contact into parallel signals and having a circuit electrically connected to said selector elements, for holding the parallel signals and connected to supply them to the selector elements;
• a first common lead electrically connected to said recording elements to supply a driving voltage to said recording elements, said first common lead extending in a direction along which said recording element are arranged;
• a second common lead electrically connected to said selector elements to electrically ground them;
• an ink container for containing an ink to be supplied to said liquid jet head,
• said liquid ejection energy generating means being disposed at a position closer to one end portion of said substrate than said first common lead;
• said logic circuit being disposed at an end of said substrate which is opposite from said one end;
• and
• said second common lead being disposed between said liquid ejection energy generating means and said selector elements or between said selector elements and said logic circuit.

A recording element substrate having formed thereon:

• a plurality of closely spaced recording elements arranged in a line, said recording elements being operable to generate liquid droplet ejection energy in response to electrical current pulses applied thereto;
• a plurality of selector elements connected to supply electrical current pulses to corresponding ones of said recording elements;
• and
• a signal processing circuit connected to receive input image signals and to supply corresponding control signals to said selector elements;
• said selector elements being positioned between said line of recording elements and said processing circuit, said selector elements further being arranged in at least two lines and in staggered arrangement to provide an improved area factor.