Ink jet recording apparatus

An ink jet recording apparatus, comprising:

• an ink composition including a pigment and a resin and not substantially including an alkyl polyol with a standard boiling point of 280° or higher;
• a recording head including a plurality of nozzles that discharge the ink composition, and a nozzle forming surface having the discharge ports of the plurality of nozzles;
• an absorption member that absorbs the ink composition attached to the discharge ports of the nozzles and the nozzle formation surface;
• and
• a driving mechanism that performs a cleaning operation by relatively moving at least one of the absorption member and the recording head, and removing the ink composition attached to the nozzle forming surface with the absorption member,
• wherein the resin is a core-shell resin provided with a core polymer and a shell polymer, and a glass-transition temperature of the shell polymer is higher than a glass-transition temperature of the core polymer;
• and
• wherein the driving mechanism relatively presses the absorption member and the nozzle forming surface so that the linear pressure reaches 8 gf/cm to 150 gf/cm.

An ink jet recording apparatus, comprising:

• an ink composition including a pigment and a resin and not substantially including an alkyl polyol with a standard boiling point of 280° or higher;
• a recording head including a plurality of nozzles that discharge the ink composition, and a nozzle forming surface having the discharge ports of the plurality of nozzles;
• an absorption member that absorbs the ink composition attached to the discharge ports of the nozzles and the nozzle formation surface;
• and
• a driving mechanism that performs a cleaning operation by relatively moving at least one of the absorption member and the recording head, and removing the ink composition attached to the nozzle forming surface with the absorption member,
• wherein the resin is a core-shell resin provided with a core polymer and a shell polymer, and a glass-transition temperature of the shell polymer is higher than a glass-transition temperature of the core polymer;
• and
• wherein a liquid repellent film is formed on the nozzle forming surface.

An ink jet recording apparatus, comprising:

• an ink composition including a pigment and a resin and not substantially including an alkyl polyol with a standard boiling point of 280° or higher;
• a recording head including a plurality of nozzles that discharge the ink composition, and a nozzle forming surface having the discharge ports of the plurality of nozzles;
• an absorption member that absorbs the ink composition attached to the discharge ports of the nozzles and the nozzle formation surface;
• a driving mechanism that performs a cleaning operation by relatively moving at least one of the absorption member and the recording head, and removing the ink composition attached to the nozzle forming surface with the absorption member;
• and
• a maintenance liquid used during the cleaning operation,
• wherein the resin is a core-shell resin provided with a core polymer and a shell polymer, and a glass-transition temperature of the shell polymer is higher than a glass-transition temperature of the core polymer.

An ink jet recording apparatus, comprising:

• an ink composition including a pigment and a resin and not substantially including an alkyl polyol with a standard boiling point of 280° or higher;
• a recording head including a plurality of nozzles that discharge the ink composition, and a nozzle forming surface having the discharge ports of the plurality of nozzles;
• an absorption member that absorbs the ink composition attached to the discharge ports of the nozzles and the nozzle formation surface;
• a driving mechanism that performs a cleaning operation by relatively moving at least one of the absorption member and the recording head, and removing the ink composition attached to the nozzle forming surface with the absorption member;
• and
• a maintenance liquid used during the cleaning operation,
• wherein the resin is a core-shell resin provided with a core polymer and a shell polymer, and a glass-transition temperature of the shell polymer is higher than a glass-transition temperature of the core polymer;
• and
• wherein a surface tension at 25° C. of the maintenance liquid is 45 mN/m or less.

An ink jet recording apparatus, comprising:

• an ink composition including a pigment and a resin and not substantially including an alkyl polyol with a standard boiling point of 280° or higher;
• a recording head including a plurality of nozzles that discharge the ink composition, and a nozzle forming surface having the discharge ports of the plurality of nozzles;
• an absorption member that absorbs the ink composition attached to the discharge ports of the nozzles and the nozzle formation surface;
• and
• a driving mechanism that performs a cleaning operation by relatively moving at least one of the absorption member and the recording head, and removing the ink composition attached to the nozzle forming surface with the absorption member,
• wherein the resin is a core-shell resin provided with a core polymer and a shell polymer, and a glass-transition temperature of the shell polymer is higher than a glass-transition temperature of the core polymer;
• and
• wherein the glass transition temperature of the shell polymer is higher than the heating temperature of the recording medium when the ink composition is discharged.