초록 ▼

A position measurement apparatus and method using laser includes a laser generating device, an image device, and a control unit. The laser generating device generates three or more laser beams progressing in parallel with each other at regular intervals. The image device obtains a picture for three

A position measurement apparatus and method using laser includes a laser generating device, an image device, and a control unit. The laser generating device generates three or more laser beams progressing in parallel with each other at regular intervals. The image device obtains a picture for three or more points formed on a target by the laser beams. The control unit calculates a position relative to the target using number of pixels between pairs of neighboring ones of the three or more points in the picture. Thus, the present invention is advantageous in that laser pointers and a CCD camera having simple constructions and low prices are used, so that the position measurement apparatus is handled conveniently and is economical.

대표청구항 ▼

A position measurement apparatus and method using laser includes a laser generating device, an image device, and a control unit. The laser generating device generates three or more laser beams progressing in parallel with each other at regular intervals. The image device obtains a picture for three

A position measurement apparatus and method using laser includes a laser generating device, an image device, and a control unit. The laser generating device generates three or more laser beams progressing in parallel with each other at regular intervals. The image device obtains a picture for three or more points formed on a target by the laser beams. The control unit calculates a position relative to the target using number of pixels between pairs of neighboring ones of the three or more points in the picture. Thus, the present invention is advantageous in that laser pointers and a CCD camera having simple constructions and low prices are used, so that the position measurement apparatus is handled conveniently and is economical. t a dye transfer from the dye transfer area to the dye receiver, but not heating two opposite edge areas of the dye donor web alongside the dye transfer area sufficiently at the print head to effect a dye transfer from the two edge areas to the dye receiver, so that the dye transfer area is vulnerable to being stretched relative to the two edge areas; supplying the dye donor web to the print head; taking up the dye donor web from the print head, but exerting a pulling force on the dye transfer area and two edge areas at the print head which is sufficient to stretch the dye transfer area relative to the two edge areas to possibly form some creases in at least respective regions adjacent the two edge areas; and lengthwise and widthwise arcing the dye transfer area and two edge areas as they are supplied to the print head, in order to cause at least the web regions in which the creases can form to spread so that crease formation that can cause line artifacts is at least substantially prevented.