CROSS-REFERENCE TO RELATED APPLICATIONS

The present invention claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2020-113700 filed on Jul. 1, 2020, entire content of which is incorporated herein by reference.

BACKGROUND

Technological Field

The present invention relates to an ink jet recording device and a recording medium temperature control method.

Description of the Related Art

There is an ink jet recording device that ejects ink onto a recording medium to record an image, a structure, or the like. The ink can be fixed to various types of recording mediums, but, depending on ink, the control of the temperature of the ink may be important in obtaining a proper fixed state.

There is a technique of controlling not only the temperature of the ink at the time of ejection but also the temperature of the recording medium which greatly affects the fixing of the ink after the ink has landed on the recording medium. WO 2013/165003 A discloses a technique by which a heater is provided to appropriately maintain the temperature of a recording medium even when images are recorded on both sides of the recording medium.

SUMMARY

However, depending on the thermal conductivity, the thickness, or the like of the recording medium, the temperature of the recording medium cannot be raised to an appropriate temperature even when heating is started immediately before the start of a recording operation, and a very large heating mechanism with high power consumption is required to rapidly raise the temperature to the appropriate temperature, which is a problem.

An object of the invention is to provide an ink jet recording device and a recording medium temperature control method capable of appropriately controlling the temperature of a recording medium more conveniently and flexibly during image recording.

To achieve at least one of the abovementioned objects, according to an aspect of the present invention, an ink jet recording device reflecting one aspect of the present invention includes, a conveyor that conveys a recording medium; a recording operator that ejects an ink to cause the ink to land on the recording medium in a middle of a conveyance path of the recording medium conveyed by the conveyor; a reverser that returns the recording medium from a first position downstream of a landing position of the ink, which is ejected from the recording operator, to a second position upstream of the landing position along the conveyance path; a first temperature regulator that regulates a temperature of the recording medium in at least a part of a region from the second position to the landing position on the conveyance path; and a hardware processor, wherein the hardware processor causes the recording operator not to eject the ink while the recording medium initially passes through the landing position.

According to another aspect, a recording medium temperature control method of an ink jet recording device including a conveyor that conveys a recording medium, a recording operator that ejects an ink to cause the ink to land on the recording medium in a middle of a conveyance path of the recording medium conveyed by the conveyor, a reverser that returns the recording medium from a first position downstream of a landing position of the ink, which is ejected from the recording operator, to a second position upstream of the landing position along the conveyance path, and a first temperature regulator that regulates a temperature of the recording medium in at least a part of a region from the second position to the landing position on the conveyance path, the method including: temperature regulating of causing the recording operator not to eject the ink while the recording medium initially passes through the landing position.

