Transporting Apparatus And Printing Apparatus Including The Same

Patent metadata

Field	Value
Publication number	US-2016112596-A1
Application number	US-201514882930-A
Country	US
Kind code	A1
Filing date	Oct 14, 2015
Priority date	Oct 16, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

Transporting apparatus includes a transporting section configured to transport continuous-form paper, an imaging apparatus including a light applying section for emitting light toward the continuous-form paper, and an imaging element for taking images of continuous-form paper based on the light from the light applying section, a transportation amount computing section configured to compute the transportation amount of the continuous-form paper based on the images of the continuous-form paper, and a transporting control section configured to control the transporting section based on the transportation amount. The imaging element includes a valid pixel area including a plurality of pixels where electric charge can be accumulated in accordance with the light reflected on the continuous-form paper, and a shading area including a plurality of pixels where the reflected light can be shaded. The light applying section emits light within a duration of reading a pixel signal of the shading area.

First claim

What is claimed is:

1 . A transporting apparatus comprising:
a transporting section that transports a transport target medium; an imaging section that includes a light emitting element that applies light towards the transport target medium and an imaging element that is an imaging element in which a plurality of pixels are arranged in a two-dimensional manner in a horizontal direction and a vertical direction and that images the transport target medium based on the light of the light emitting element; a transportation amount computing section that computes a transportation amount of the transport target medium based on the image of the transport target medium captured by the imaging section; and a transporting control section that controls the transporting section based on the transportation amount of the transport target medium computed by the transportation amount computing section, wherein the imaging element includes a valid pixel area that is an area of a plurality of pixels in which electric charge can be accumulated in accordance with reflected light in which the light of the light emitting element is reflected on the transport target medium, and a shading area that is an area of a plurality of pixels in which the reflected light can be shaded, and the light emitting element emits light within a shading duration that is a duration of the imaging element reading a pixel signal of the shading area.

2 . The transporting apparatus according to claim 1 ,
wherein the light emitting element ends the light emission within the shading duration.

3 . The transporting apparatus according to claim 1 ,
wherein the imaging section causes the light emitting element to emit light based on at least any of a first reading synchronizing signal that is a standard of reading the image of one frame by the imaging element, or a second reading synchronizing signal that is a standard of reading the pixel signal by line formed by a plurality of pixels arranged in the horizontal direction of the imaging element.

4 . The transporting apparatus according to any of claim 1 ,
wherein the imaging section completes transmitting of a pixel signal of the valid pixel area to the transportation amount computing section before the next shading duration ends.

5 . The transporting apparatus according to claim 1 ,
wherein the imaging section includes an area changing section that changes the number of lines of the valid pixel area that reads the pixel signal from the imaging element, and the area changing section changes the number of the lines of the valid pixel area based on the transportation amount computed by the transportation amount computing section.

6 . A printing apparatus comprising:
a transporting section that transports a transport target medium; a printing section that performs printing on the transport target medium transported by the transporting section; an imaging section that includes a light emitting element that applies light towards the transport target medium and an imaging element that is an imaging element in which a plurality of pixels are arranged in a two-dimensional manner in a horizontal direction and a vertical direction and that images the transport target medium based on the light of the light emitting element; a transportation amount computing section that computes a transportation amount of the transport target medium based on the image of the transport target medium captured by the imaging section; and a transporting control section that controls the transporting section based on the transportation amount of the transport target medium computed by the transportation amount computing section, wherein the imaging element includes a valid pixel area that is an area of a plurality of pixels in which electric charge can be accumulated in accordance with reflected light in which the light of the light emitting element is reflected on the transport target medium, and a shading area that is an area of a plurality of pixels in which the reflected light can be shaded, and the light emitting element emits light within a shading duration that is a duration of the imaging element reading a pixel signal of the shading area.

7 . The printing apparatus according to claim 6 ,
wherein the imaging section completes transmitting of a pixel signal of the valid pixel area to the transportation amount computing section before the next shading duration ends.

Assignees

• Seiko Epson Corp

Inventors

• Kurane Haruhisa

Classifications

• H04N1/1215

  Feeding using one or more cylindrical platens or rollers in the immediate vicinity of the main scanning line · CPC title

• H04N1/0476 Primary

  Indicating the scanning velocity · CPC title