SCANNER SYSTEM AND IMAGE DATA GENERATING METHOD

• US 20180063359A1
• Filed: 08/14/2017
• Published: 03/01/2018
• Est. Priority Date: 08/29/2016
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: NETSU, Takahiro, SAKAI, Toshifumi
• Granted Patent: US 10,447,885 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: H04N 1/03 with photodetectors arranged in a substantially linear array
• CPC Class Codes: H04N 1/12 using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanningsheet-feed movement by translatory movement of a flat picture-bearing surface H04N1/1008; main-scanning using oscillating or rotating mirrors H04N1/113; using multi-element arrays H04N1/19
• CPC Class Codes: H04N 1/193 using electrically scanned linear arrays , e.g. linear CCD arrays
• CPC Class Codes: H04N 1/40068 Modification of image resolution, i.e. determining the values of picture elements at new relative positions H04N1/3935 takes precedence
• CPC Class Codes: H04N 1/486 with separate detectors, each detector being used for one specific colour component

Abstract

A scanner system including a generating unit configured to selectively execute either a first process of generating image data from a conveyed document conveyed by a conveyance device, synthesizing the scanned images, and generating image data, or a second process of generating image data from a placed document set on a scanning platen; the second process scanning by a method that, compared with the first process, is less affected by deviation of the document perpendicularly to the scanning platen.

Claims

1. A scanner system comprising:

a conveyance device;

a scanning platen;

a generating unit configured to selectively execute either

a first process of reducing while focusing on multiple line sensors light from a conveyed document conveyed by the conveyance device, synthesizing the scanned images, and generating image data, or

a second process of reducing while focusing on multiple line sensors light from a placed document set on the scanning platen, synthesizing the scanned images, and generating image data;

the second process scanning by a method that, compared with the first process, is less affected by deviation of the document perpendicularly to the scanning platen.

2. The scanner system described in claim 1, further comprising:

a mark member having a merging mark surface with a merging mark used as a reference for image synthesis, and positioning the merging mark to an exposure position to which light from the light source is emitted on the conveyance path of the conveyed document;

the second process generating the image data by synthesizing the images without using the merging mark; and

the first process generating the image data synthesizing the images based on output of line sensors when the merging mark surface is at the exposure position.

3. The scanner system described in claim 1, further comprising:

a controller that generates the image data by a process that requires more time to generate the image data after scanning an image in the second process than after scanning a document in the first process.

4. The scanner system described in claim 1, further comprising:

a controller that controls the maximum resolution specifiable by the user in the second process to be lower than the maximum resolution specifiable by the user in the first process, and generates the image data at the specified resolution.

5. The scanner system described in claim 1, wherein:

the method of reducing the effect of document deviation is either a scanning method in which the amount of light output by the light source is relatively great, or a scanning method in which the reflection angle at which light from the light source is reflected by the document is a relatively small angle.

6. An image data generating method configured to selectively execute either a first process of reducing while focusing on multiple line sensors light from a conveyed document conveyed by the conveyance device, synthesizing the scanned images, and generating image data, or

a second process of reducing while focusing on multiple line sensors light from a placed document set on the scanning platen, synthesizing the scanned images, and generating image data,

the second process scanning by a method that, compared with the first process, is less affected by deviation of the document perpendicularly to the scanning platen.