Patent ID: 8002380
Filing Date: 2011-08-23
Classification: B41J

Abstract:
1. A cartridge-information detecting device comprising: an optical sensor for detecting information about a cartridge which stores ink and is removably mounted on a cartridge mount, the information including specific information indicating that the cartridge is in a state of being mounted on or removed from the cartridge mount; and a controller including a timer which measures time and configured to execute a control for changing an operational mode of the optical sensor, wherein the controller permits the optical sensor to operate in a constant operational mode in which the information about the cartridge is constantly detected through the optical sensor until the timer has measured a predetermined time from a timing at which the detection of the information about the cartridge becomes to be allowed, and wherein the controller permits the optical sensor to operate in an intermittent operational mode in which only the specific information is intermittently detected through the optical sensor, after the predetermined time has passed.