Recording system, recording apparatus, and option device

摘要

Each of a plurality of option devices includes a signal changing unit connected to a first control unit of a recording apparatus without a second control unit of another option device and configured to change a signal supplied from the first control unit, and a communication line configured to connect the first control unit and the second control unit without the second control unit of another option device. The first control unit determines the number of the option devices by inputting a signal to the signal changing unit in each of the plurality of option devices. After that, in the case where communication can be performed between the first and second control units, it is determined that the second control unit of the option device is normal. In the case where the communication cannot be performed, it is determined that the second control unit is faulty.

主权项

1. A recording system comprising:
a recording apparatus configured to record an image on a recording medium; and a plurality of option devices, wherein: the recording apparatus includes a first control unit configured to control an operation of the recording apparatus; the option devices are connected in series to the recording apparatus; each of the option devices includes
a second control unit configured to control an operation of the option device,a signal changing unit connected to the first control unit without the second control unit of another option device, not controlled by the second control unit, and configured to change a signal supplied from the first control unit, anda communication line configured to connect the first control unit and the second control unit without the second control unit of another option device; and the first control unit is configured to:
supply the signal to the signal changing unit in each of the option devices, and determine a number of the option devices connected in series to the recording apparatus based on a change in the supplied signal by the signal changing unit;try communication with the second control unit in each of the option devices via the communication line, the option devices being connected in series to the recording apparatus, corresponding to the determined number of option devices;determine that the second control unit of the option device is normal when the communication is performed; anddetermine that the second control unit of the option device is faulty when the communication is not performed.