Transporting apparatus, recording apparatus, and transporting method

Abstract

A transporting apparatus configured to transport a recording medium to a target stop position includes a feeding mechanism; a transporting mechanism; a storing unit configured to store a stop deviation at the time of a previous transport drive; a transporting distance calculating unit configured to calculate a second transporting distance in which the stop deviation after the reset of the storing unit is reflected on a first transporting distance requested this time, and to calculate the second transporting distance in which the stop deviation in the storing unit is reflected on the first transporting distance requested this time; a setting unit configured to set a speed profile of a multistage transport when the multistage transport condition is satisfied, set a speed profile of a transport mode other than the multistage transport when the multistage transport condition is not satisfied.

1 . A transporting apparatus configured to transport a recording medium to a target stop position comprising:
 a mounting unit configured to mount the recording medium;   a feeding mechanism for the recording medium;   a transporting mechanism for the recording medium;   a transport drive unit configured to drive the feeding mechanism and the transporting mechanism;   a storing unit configured to store a stop deviation at the time of a previous transport drive with respect to the target stop position;   a judging unit configured to judge whether a feeding operation for the recording medium on the mounting bace by the feeding mechanism and the transporting mechanism, or a transporting operation for the recording medium after the feeding operation by the transporting mechanism;   a resetting unit configured to reset the stop deviation in the storing unit;   a transporting distance calculating unit configured to calculate a second transporting distance in which the stop deviation after the reset of the storing unit is reflected on a first transporting distance requested this time at the time of the feeding, and to calculate the second transporting distance in which the stop deviation in the storing unit is reflected on the first transporting distance requested this time at the time of the transporting;   a determining unit configured to determine whether or not the second transporting distance satisfies a multistage transport condition on which a multistage transport including a plurality of constant speeds should be performed;   a setting unit configured to set a speed profile of the multistage transport when the multistage transport condition is satisfied, set a speed profile of a transport mode other than the multistage transport when the multistage transport condition is not satisfied, and set a speed profile of a transport system according to the second transporting distance; and   a control unit configured to control the drive of the transport drive unit on the basis of the set speed profile and cause the recording medium to be transported.   
   
   
       2 . The transporting apparatus according to  claim 1 , wherein the speed profile of the multistage transport includes a first speed and a second speed in sequence from the position where the feeding is started to a stop ats an initial position, and includes:
 a first speed range including a first accelerating range for accelerating from the position where the feeding is started to the first speed and a first constant speed range for maintaining the speed at the first speed;   a second accelerating range for accelerating from the first speed to the second speed;   a second speed range including a second constant speed range for maintaining the speed at the second speed, and a decelerating range for decelerating from the second speed to the target stop position;   the determining unit performs a determination on the multistage transport condition such that the transporting distance in the second speed range which is variable according to the second transporting distance is a minimum drive distance or more; and   the setting unit adjusts the transporting distance in the second constant speed according to the second transporting distance to set the speed profile of the multistage transport when the multistage transport condition is satisfied according to the determination of the determining unit.   
   
   
       3 . The transporting apparatus according to  claim 2 , wherein the first constant speed range is set according to an operation range of the feeding mechanism. 
   
   
       4 . The transporting apparatus according to  claim 1 , further comprising a media detecting unit configured to detect the recording medium in the course of the feeding,
 wherein the respective processes by the resetting unit, the transporting distance calculating unit, the determining unit, and the setting unit are performed when the recording medium is detected by the medium detecting unit.   
   
   
       5 . The transporting apparatus according to  claim 1  further comprising a medium detecting unit configured to detect the recording medium in the course of the feeding,
 wherein at the time of the feeding, respective processes by the transporting distance calculating unit, the determining unit, and the setting unit are performed twice before starting the feeding and at the time of medium detection in which the medium detecting unit detects the recording medium in the course of the feeding,   the resetting unit resets the storing unit either one of before starting the feeding and at the time of medium detection,   when the multistage transport condition is satisfied before stating the feeding and the setting unit sets the speed profile of the multistage transport, even if the multistage transport condition is not satisfied at the time of medium detection in the course of the feeding at the speed profile of the multistage transport, the setting unit changes the speed profile for the remaining feeding into the speed profile of the transport mode other than the multistage transport.   
   
   
       6 . The transporting apparatus according to  claim 5 , wherein the resetting unit resets the storing unit before starting the feeding, and
 when the multistage transport condition is not satisfied before stating the feeding and the setting unit sets a speed profile of the transport mode other than the multistage transport, even if the multistage transport condition is satisfied at the time of medium detection in the course of the feeding at the speed profile, the setting unit does not change the setting into the speed profile of the multistage transport.   
   
   
       7 . The transporting apparatus according to  claim 5 , wherein the resetting unit resets the storing unit at the time of medium detection and even when the multistage transport condition is not satisfied before stating the feeding and the setting unit sets the speed profile of the transport mode other than the multistage transport, if the multistage transport condition is satisfied at the time of medium detection in the course of the feeding at the speed profile, the setting unit changes the speed profile for the remaining feeding into the speed profile of the multistage transport. 
   
   
       8 . A recording apparatus including a recording unit configured to produce a record on a transported recording medium and the transporting apparatus according to  claim 1 . 
   
   
       9 . A transporting method for transporting a recording medium to a target stop position comprising:
 storing a stop deviation at the time of a previous transporting a with respect to a target stop position;   judging whether feeding for feeding the recording medium mounted on a mounting bed by a feeding mechanism and a transporting mechanism or transporting for transporting the recording medium after having fed by the transporting mechanism;   resetting the stop deviation in the storing unit at the time of the feeding and not resetting in the storing unit at the time of the transporting;   calculating a second transporting distance in which the stop deviation after the reset in the storing unit is reflected on a first transporting distance requested this time at the time of the feeding, and calculating the second transporting distance in which the stop deviation in the storing unit is reflected on the first transporting distance requested this time at the time of the transporting;   determining whether or not the second transporting distance satisfies a multistage transport condition on which a multistage transport including a plurality of constant speeds should be performed at the time of the feeding;   setting a speed profile of the multistage transport when the multistage transport condition is satisfied, setting a speed profile of a transport mode other than the multistage transport when the multistage transport condition is not satisfied, and setting a speed profile of a transport system according to the second transporting distance at the time of the transporting; and   controlling the drive of the transport drive unit on the basis of the set speed profile and causing the recording medium to be transported.