Liquid discharge head, method for producing the same, liquid discharge apparatus, and image forming apparatus

A method for producing a liquid discharge head including:

• a flow path formation part in which pressure generation chambers are arranged;
• and a pressure generation unit configured to apply pressure to the pressure generation chambers, the method comprising
• joining a vibration unit to the flow path formation part with a resin layer to form the pressure generation unit,
• wherein the resin layer includes a curable resin composition including (A) an epoxy resin, (B) a polythiol compound, (C) at least one adhesiveness-imparting agent selected from the group consisting of a compound represented by General Formula (1) below, a titanium compound represented by General Formula (2-1) below, and a titanium compound represented by General Formula (2-2) below, and (D) a curing accelerator,
• where in the General Formula (1), X1, X2, X3, and X4 each independently represent a single bond, O, S, C(CH3)2, CO, CO2, or SO2, Y1 and Y2 each independently represent H, Cl, or OH, and a represents an integer of from 1 through 10,000,
• where in the General Formula (2-1) and the General Formula (2-2), R1, R2, R3, and R4 each independently represent an unsubstituted alkyl group having from 1 through 10 carbon atoms, an alkyl group having from 1 through 10 carbon atoms and substituted with a hydroxyl group, or a group represented by General Formula (2-3) below, b and c each independently represent an integer of from 1 through 3, and b+c=4,
• where in the General Formula (2-3), R5 represents an alkyl group having from 1 through 6 carbon atoms.

An image forming apparatus comprising:

• a housing unit configured to house an inkjet ink;
• and
• a liquid discharge head configured to apply a stimulus to the inkjet ink to discharge the ink and print an image on a print medium,
• wherein the liquid discharge head includes:
• a flow path formation part in which pressure generation chambers are arranged;
• and
• a pressure generation unit configured to apply pressure to the pressure generation chambers,
• wherein the pressure generation unit is formed by joining a vibration unit to the flow path formation part with a resin layer, and
• wherein the resin layer includes a curable resin composition including (A) an epoxy resin, (B) a polythiol compound, (C) at least one adhesiveness-imparting agent selected from the group consisting of a compound represented by General Formula (1) below, a titanium compound represented by General Formula (2-1) below, and a titanium compound represented by General Formula (2-2) below, and (D) a curing accelerator,
• where in the General Formula (1), X1, X2, X3, and X4 each independently represent a single bond, O, S, C(CH3)2, CO, CO2, or SO2, Y1 and Y2 each independently represent H, Cl, or OH, and a represents an integer of from 1 through 10,000,
• where in the General Formula (2-1) and the General Formula (2-2), R1, R2, R3, and R4 each independently represent an unsubstituted alkyl group having from 1 through 10 carbon atoms, an alkyl group having from 1 through 10 carbon atoms and substituted with a hydroxyl group, or a group represented by General Formula (2-3) below, b and c each independently represent an integer of from 1 through 3, and b+c=4,
• where in the General Formula (2-3), R5 represents an alkyl group having from 1 through 6 carbon atoms.