There is provided a printer including first to fourth head chips, and first and second rollers. The first to fourth head chips are arranged at intervals in a second direction orthogonal to a first direction. A nozzle, of nozzles arranged in a second head chip N and used for printing, which is positioned closest to the one side in the second direction is referred to as a nozzle A. A nozzle, of nozzles arranged in a fourth head chip N and used for printing, which is positioned closest to the one side in the second direction is referred to as a nozzle B. The nozzle A is arranged closer to the one side in the second direction than the nozzle B and the first roller is arranged closer to the other side in the second direction than the second roller.

There is provided a printer including first to fourth head chips, and first and second rollers. The first to fourth head chips are arranged at intervals in a second direction orthogonal to a first direction. A nozzle, of nozzles arranged in a second head chip N and used for printing, which is positioned closest to the one side in the second direction is referred to as a nozzle A. A nozzle, of nozzles arranged in a fourth head chip N and used for printing, which is positioned closest to the one side in the second direction is referred to as a nozzle B. The nozzle A is arranged closer to the one side in the second direction than the nozzle B and the first roller is arranged closer to the other side in the second direction than the second roller.

A liquid jetting apparatus jetting a liquid onto a recording medium conveyed in a first direction includes head units arranged in a second direction orthogonal to the first direction. One head unit includes nozzle chips; one nozzle chip has a nozzle arrangement area wherein nozzles are aligned in a third direction crossing the first and second directions. The nozzle chip is arranged to be shifted relative to another nozzle chip in a direction crossing the first and second directions and different from the third direction. The head unit has a first overlapping portion wherein nozzle arrangement areas of first and second nozzle chips included in the nozzle chips partially overlap with each other in the first direction. The liquid jetting apparatus has a second overlapping portion wherein nozzle arrangement areas of third and fourth nozzle chips included in the head units partially overlap with each other in the first direction.

A liquid jetting apparatus jetting a liquid onto a recording medium conveyed in a first direction includes head units arranged in a second direction orthogonal to the first direction. One head unit includes nozzle chips; one nozzle chip has a nozzle arrangement area wherein nozzles are aligned in a third direction crossing the first and second directions. The nozzle chip is arranged to be shifted relative to another nozzle chip in a direction crossing the first and second directions and different from the third direction. The head unit has a first overlapping portion wherein nozzle arrangement areas of first and second nozzle chips included in the nozzle chips partially overlap with each other in the first direction. The liquid jetting apparatus has a second overlapping portion wherein nozzle arrangement areas of third and fourth nozzle chips included in the head units partially overlap with each other in the first direction.

A printer is disclosed. One printer includes a first head unit being elongate in a longitudinal direction. The first head unit has a first nozzle group having a plurality of first nozzles arrayed with a first pitch along the longitudinal direction. The printer includes a second head unit being elongate in the longitudinal direction. The second head unit has a second nozzle group having a plurality of second nozzles arrayed along the longitudinal direction. The second nozzle group includes a plurality of nozzle sets. Each of the plurality of the nozzle sets includes some of the plurality of second nozzles. The second nozzles in each of the plurality of the nozzle sets arrayed with the first pitch along the longitudinal direction. The plurality of the nozzle sets are arrayed with a second pitch along the longitudinal direction. The second pitch is different from the first pitch.

A printer is disclosed. One printer includes a first head unit being elongate in a longitudinal direction. The first head unit has a first nozzle group having a plurality of first nozzles arrayed with a first pitch along the longitudinal direction. The printer includes a second head unit being elongate in the longitudinal direction. The second head unit has a second nozzle group having a plurality of second nozzles arrayed along the longitudinal direction. The second nozzle group includes a plurality of nozzle sets. Each of the plurality of the nozzle sets includes some of the plurality of second nozzles. The second nozzles in each of the plurality of the nozzle sets arrayed with the first pitch along the longitudinal direction. The plurality of the nozzle sets are arrayed with a second pitch along the longitudinal direction. The second pitch is different from the first pitch.

An inkjet head includes a head chip and an ink chamber. The head chip has a nozzle substrate provided with nozzles which discharge ink. The ink chamber is located over the head chip. In the ink chamber, the ink to be supplied to the nozzles is stored. The inkjet head is mounted on a mounting member. Between the nozzle substrate and the ink chamber, the inkjet head has a position reference substrate provided with butting parts. The butting parts are butted against the mounting member to position the inkjet head when the inkjet head is mounted on the mounting member.

When discharge timing of a first head module and a second head module, adjacent to each other, is adjusted in a recording head in which a plurality of head modules each having s nozzle array in which a plurality of nozzles is arranged in different positions in a first direction is joined in a second direction intersecting with the first direction, the discharge timing is adjusted so that a complementary region recording shift amount being a recording shift amount in the first direction in a complementary region in a joined portion between the first head module and the second head module becomes a value between a first non-complementary region recording shift amount and a second non-complementary region recording shift amount that are recording shift amounts in the first direction in respective non-complementary regions in the first head module and the second head module.

This image recording apparatus includes a viscosity increasing light irradiator that increases the viscosity of ink ejected onto a recording medium, and a fixing light irradiator that fixes the ink on the recording medium. The fixing light irradiator is disposed behind a first switching part that causes the transport orientation of the recording medium to approach the vertical. This reduces the footprint of the image recording apparatus. Also a second type of irradiation light emitted from the fixing light irradiator is intercepted by the recording medium. This suppresses the unwanted curing of the ink in an image recorder. Also the viscosity increasing light irradiator is disposed at a location upstream from the first switching part in a transport direction. This suppresses the decrease in printing quality resulting from the passage of the ink remaining uncured through the first switching part.

This image recording apparatus includes a viscosity increasing light irradiator that increases the viscosity of ink ejected onto a recording medium, and a fixing light irradiator that fixes the ink on the recording medium. The fixing light irradiator is disposed behind a first switching part that causes the transport orientation of the recording medium to approach the vertical. This reduces the footprint of the image recording apparatus. Also a second type of irradiation light emitted from the fixing light irradiator is intercepted by the recording medium. This suppresses the unwanted curing of the ink in an image recorder. Also the viscosity increasing light irradiator is disposed at a location upstream from the first switching part in a transport direction. This suppresses the decrease in printing quality resulting from the passage of the ink remaining uncured through the first switching part.