The present application is based on, and claims priority from JP Application Serial Number 2019-057887, filed Mar. 26, 2019, the disclosure of which is hereby incorporated by reference herein in its entirety.

BACKGROUND

1. Technical Field

The present disclosure relates to a liquid discharge apparatus including a discharge unit configured to discharge a liquid such as ink onto a medium such as a paper, and a display control method for the liquid discharge apparatus.

2. Related Art

For example, JP 2015-178179 A discloses a liquid injection apparatus such as an inkjet printer configured to discharge a liquid such as ink onto a medium such as a paper to perform printing. The liquid injection apparatus, while sending environmental information containing temperature and humidity to a server, receives, from the server, a first estimation model for estimating a recommended time for checking nozzles generated by the server. The liquid injection apparatus computes a recommended time based on the first estimation model, performs nozzle checking at the recommended time, and urges the user to perform cleaning. Thereafter, when the user does not perform cleaning within a predetermined preliminary period, the liquid injection apparatus forcibly performs cleaning.

Unfortunately, the liquid injection apparatus described in JP 2015-178179, when the recommended time is reached, causes the user to perform cleaning by a manual operation, or the liquid discharge apparatus forcibly performs cleaning after the subsequent preliminary period passes, and thus, the frequency of performing the cleaning is left to the environment at that time. For example, when the humidity becomes excessively low, foreign substances such as dust and fluff become easily suspended in the air. An air containing the foreign substances suspended in the air, when taken into the housing, facilitates the occurrence of nozzle clogging in the discharge unit. In this case, the recommended time is advanced and the frequency of the cleaning increases. A higher cleaning frequency leads to increased consumption of liquid such as ink that is not utilized for printing, and reduced productivity. Further, the liquid injection apparatus described in JP 2015-178179 A is only directed to the printing failure due to nozzles, and there is no consideration for the printing failure due to medium postures such as wrinkles and floating of a medium, which easily occur when the humidity is excessively high. For example, although managing the environment including temperature or humidity can suppress increase in frequencies of cleaning caused by nozzle clogging or an occurrence of wrinkles or the like in the medium, the user does not have any means to know that the humidity has deviated from the range suitable for printing. In addition, because the liquid injection apparatus is operated in a recommended environment, there is a case when the operator manages temperature and humidity, and this kind of managing temperature and humidity is troublesome and moreover, causes the burden of the operator.

SUMMARY

A liquid discharge apparatus for solving the above-described problems includes a transport unit configured to transport a medium, a discharge unit configured to discharge a liquid onto the medium, a support portion that supports a portion of the medium, the liquid being discharged from the discharge unit onto the portion of the medium, a housing including therein the discharge unit, a humidity detection unit configured to detect a humidity, and a display control unit configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity less than a first predetermined value, and configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity exceeding a second predetermined value greater than the first predetermined value.

A display control method for a liquid discharge apparatus for resolving the above-described issue is a display control method for the liquid discharge apparatus including a transport unit configured to transport a medium, a discharge unit configured to discharge a liquid onto the medium, and a humidity detection unit configured to detect a humidity, the liquid discharge apparatus displaying information corresponding to the humidity, the display control method including a humidity detection step for detecting a humidity by the humidity detection unit, a first display step for displaying an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity less than a first predetermined value, and a second display step for displaying an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity exceeding a second predetermined value greater than the first predetermined value.

