Printing apparatus, control method for printing apparatus, and storage medium

Patent metadata

Field	Value
Publication number	US-9509876-B2
Application number	US-201514949479-A
Country	US
Kind code	B2
Filing date	Nov 23, 2015
Priority date	Nov 28, 2014
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A control method for a printing apparatus including a reading unit configured to read an image to generate image data includes printing, via a printing unit, an adjustment image, which is used to adjust a printing position, in such a way that the adjustment image is in contact with an end of a sheet, detecting the end of the sheet based on adjustment image data generated by the reading unit reading the adjustment image printed on the sheet by the printing unit, obtaining an amount of shift in the printing position based on the detected end of the sheet and the adjustment image data, and controlling, based on the obtained amount of shift in the printing position, the printing unit to print an image on the sheet.

First claim

What is claimed is:

1. A printing apparatus comprising:
a reading unit configured to convey a sheet, and read an image on the sheet to generate image data;
a printing unit configured to print adjustment images;
a detecting unit configured to detect the end of the sheet based on adjustment image data generated by the reading unit reading the adjustment images printed on the sheet by the printing unit;
an obtaining unit configured to obtain an amount of shift in the printing position based on the end of the sheet detected by the detecting unit and the adjustment image data;
a print controlling unit configured to control, based on the amount of shift in the printing position obtained by the obtaining unit, the printing unit to print an image on the sheet; and
a designating unit configured to designate whether to cause the reading unit to convey the sheet and read the adjustment images printed on the sheet while the sheet on which the adjustment images are printed is conveyed, or configured to designate whether to cause the reading unit to read the adjustment images printed on the sheet without conveying the sheet on which the adjustment images are printed,
wherein the adjustment images include a first adjustment image formed on an edge region of the sheet and a second adjustment image formed on a region different from the region where the first adjustment image is formed,
wherein the printing unit prints the adjustment images in a case where it is designated by the designating unit to cause the reading unit to convey the sheet and read the adjustment images printed on the sheet while the sheet on which the adjustment images are printed is conveyed, and
wherein the printing unit does not print the first adjustment image in a case where it is designated by the designating unit to cause the reading unit to read the adjustment images printed on the sheet without conveying the sheet on which the adjustment images are printed.

2. The printing apparatus according to claim 1 , further comprising a setting unit configured to set, to the sheet, the amount of shift in the printing position obtained by the obtaining unit,
wherein the print controlling unit controls, based on the amount of shift in the printing position set by the setting unit, the printing unit to print an image on the sheet.

3. The printing apparatus according to claim 1 , further comprising a selecting unit configured to select, based on an instruction from a user, the sheet,
wherein the printing unit prints the adjustment images on the sheet selected by the selecting unit.

4. The printing apparatus according to claim 1 , wherein the first adjustment image is a black image.

Assignees

• Canon Kk

Inventors

• Kikuchi Shou

Classifications

• H04N1/00779

  Adjusting settings, e.g. mode, feeding rate or type of paper · CPC title

• G03G15/5062

  by measuring the characteristics of an image on the copy material · CPC title

• H04N1/00737 Primary

  using the scanning elements as detectors · CPC title

• H04N1/00761

  using reference marks, e.g. on sheet, sheet holder or guide · CPC title

• H04N1/00355

  Mark-sheet input (sensing record carriers G06K7/00; character recognition G06V30/10; document-oriented image-based pattern recognition G06V30/40) · CPC title