Abstract: A scanner for automatically detecting a scan target includes a transparent scan region configured to support the target, an image sensor including a light source for irradiating light toward the scan region and a light receiving element array for sensing the incident light through the scan region, a drive unit configured to linearly move the sensor across the scan region, and a control unit that controls the sensor and the drive unit. The control unit controls the light source of the sensor and the drive unit such that the sensor moves to a detection position and then the array senses the incident light through the scan region with the light source turned on and off. The control unit compares output signals of the array obtained by turning on and off the light source and automatically determines, based on the comparison, whether the target is placed in the scan region.

Abstract: A scanner for automatically detecting a scan target includes a transparent scan region configured to support the target, an image sensor including a light source for irradiating light toward the scan region and a light receiving element array for sensing the incident light through the scan region, a drive unit configured to linearly move the sensor across the scan region, and a control unit that controls the sensor and the drive unit. The control unit controls the light source of the sensor and the drive unit such that the sensor moves to a detection position and then the array senses the incident light through the scan region with the light source turned on and off. The control unit compares output signals of the array obtained by turning on and off the light source and automatically determines, based on the comparison, whether the target is placed in the scan region.

Abstract: A double side image scanner includes a case having a medium guide track with a reference loading line, a main frame mounted inside the case, a first roll feed including a first feed roller mounted on a front side of the guide track and a first idle roller disposed above the first feed roller for cooperating with the first feed roller to load the medium, a second roll feed including a second feed roller mounted on a rear side of the guide track and a second idle roller disposed above the second feed roller for cooperating with the second feed roller to load the medium, a drive device for rotating the first feed roller and the second feed roller, first and second image sensors for scanning opposite surfaces of the medium to acquire image data, and a tracking device for biasing the medium toward the reference loading line.

Abstract: A double side image scanner includes a frame, a two-way roll feeder, a one-way roll feeder and an image sensor. The frame includes a track that has an entrance, a scanning line joined to the entrance and a circuit line joined to the scanning line. The circuit line is designed to return the medium to the scanning line. The circuit line has a junction point where the circuit line meets with the scanning line, an inlet through which the medium comes into the circuit line from the scanning line and an outlet through which the medium goes out of the circuit line toward the scanning line. A driving means mounted to the frame for driving the two-way roll feeder and the one-way roll feeder. The image sensor obtains image data by scanning the front and rear surfaces of the medium.

Abstract: A double side image scanner includes a frame, a two-way roll feeder, a one-way roll feeder and an image sensor. The frame includes a track that has an entrance, a scanning line joined to the entrance and a circuit line joined to the scanning line. The circuit line is designed to return the medium to the scanning line. The circuit line has a junction point where the circuit line meets with the scanning line, an inlet through which the medium comes into the circuit line from the scanning line and an outlet through which the medium goes out of the circuit line toward the scanning line. A driving means mounted to the frame for driving the two-way roll feeder and the one-way roll feeder. The image sensor obtains image data by scanning the front and rear surfaces of the medium.

Abstract: A double side image scanner includes a case having a medium guide track with a reference loading line, a main frame mounted inside the case, a first roll feed including a first feed roller mounted on a front side of the guide track and a first idle roller disposed above the first feed roller for cooperating with the first feed roller to load the medium, a second roll feed including a second feed roller mounted on a rear side of the guide track and a second idle roller disposed above the second feed roller for cooperating with the second feed roller to load the medium, a drive device for rotating the first feed roller and the second feed roller, first and second image sensors for scanning opposite surfaces of the medium to acquire image data, and a tracking device for biasing the medium toward the reference loading line.