Patent ID: 7712739
Filing Date: 2010-05-11
Classification: B41J

Abstract:
1. A conveying apparatus comprising: a conveyor belt formed as a loop configured to convey an object, the conveyor belt including a linear encoder having a linear scale provided on a rear face of the conveyor belt; a driving part for driving the conveyor belt, the driving part including a rotary encoder having a resolution higher than the linear encoder of the conveyor belt; a control part configured to calculate a required number of pulses of signals output from the linear encoder and the rotary encoder for moving the conveyor belt a predetermined amount, by using a formula of N=a·n wherein “a” is a correlation function representing a ratio between “L wherein the control part controls the amount of conveyance according to the number of pulses of signals n wherein the linear encoder includes a first sensor positioned within the loop of the conveyor belt for reading the linear scale provided on the rear face of the conveyor belt.