Sheet processing apparatus, method of controlling the same and computer-readable storage medium

Patent metadata

Field	Value
Publication number	US-10011138-B2
Application number	US-201514635256-A
Country	US
Kind code	B2
Filing date	Mar 2, 2015
Priority date	Mar 10, 2014
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A sheet processing apparatus operable to perform creasing processing on media, and a method of controlling the same, accept an offset position of a crease for folding of a cover of a bookbinding product which is a length from an edge of a spine of the bookbinding product, and acquire a position of the crease for folding corresponding to the cover using at least a size of the cover, the offset position, and a thickness of the bookbinding product. Based on the acquired position of the crease, creasing processing is executed on the cover.

First claim

What is claimed is:

1. A sheet processing apparatus comprising:
an image forming unit configured to form an image on a sheet;
a creasing unit configured to crease a sheet conveyed from the image forming unit;
a case binding unit configured to glue inner sheets with a cover sheet and to form a bookbinding product from the inner sheets and the cover sheet, wherein the inner sheets are conveyed from the image forming unit and are not creased by the creasing unit while being conveyed toward the case binding unit, and the cover sheet is conveyed from the image forming unit and is creased by the creasing unit while being conveyed toward the case binding unit; and
a control unit configured to determine a creasing position of the cover sheet based on at least (i) a size of the cover sheet, (ii) a thickness of a spine cover of the bookbinding product, and (iii) an offset value which is a length from an edge of the spine cover, wherein the thickness of the spine cover is determined based on a type of the cover sheet, a type of the inner sheets and a number of the inner sheets, and the offset value is a value input in accordance with a user instruction,
wherein the control unit is configured to control the creasing unit to crease the cover sheet at the determined creasing position.

2. The sheet processing apparatus according to claim 1 , further comprising a crease setting unit configured to accept a setting of whether or not to apply crease for folding processing to the cover sheet of the bookbinding product.

3. The sheet processing apparatus according to claim 1 , wherein the thickness of the spine cover is determined based on a thickness of the cover sheet.

4. The sheet processing apparatus according to claim 3 , further comprising:
a setting unit configured to set a size and the type of the cover sheet, and the type of the inner sheets, wherein the types of the cover sheet and the inner sheets are media types; and
a storage unit configured to store a thickness for each medium of the cover sheet and the inner sheets in accordance with the respective media type,
wherein the control unit, based on the media types of the cover sheet and the inner sheets set by the setting unit and thicknesses corresponding to those media types stored in the storage unit, determines the thickness of the spine cover.

5. The sheet processing apparatus according to claim 1 , wherein the creasing unit executes creasing processing only on a front cover of the cover sheet.

6. The sheet processing apparatus according to claim 1 , further comprising:
a determining unit configured to determine whether or not a picture on a first page of the bookbinding product is hidden by the cover sheet when the cover sheet, which has been creased by the creasing unit, is folded at the creasing position; and
a warning unit configured to issue a warning prior to execution of the creasing by the creasing unit when the determining unit determines that the picture of the first page is hidden by the cover sheet.

7. The sheet processing apparatus according to claim 1 , further comprising a warning unit configured to issue a warning prior to execution of the creasing by the creasing unit when it is determined that the position of the crease overlaps a glued portion of a case binding.

8. An image forming apparatus comprising:
an image forming unit configured to form an image on a sheet;
a creasing control unit configured to control a creasing unit to crease a sheet conveyed from the image forming unit; and
a case binding control unit configured to control a case binding unit to glue inner sheets with a cover sheet and to form a bookbinding product from the inner sheets and the cover sheet, wherein the inner sheets are conveyed from the image forming unit and are not creased by the creasing unit while being conveyed toward the case binding unit, and the cover sheet is conveyed from the image forming unit and is creased by the creasing unit while being conveyed toward the case binding unit,
wherein the creasing control unit is configured to determine a creasing position of the cover sheet based on at least (i) a size of the cover sheet, (ii) a thickness of a spine cover of the bookbinding product, and (iii) an offset value which is a length from an edge of the spine cover, wherein the thickness of the spine cover is determined based on a type of the cover sheet, a type of the inner sheets and a number of the inner sheets, and the offset value is a value input in accordance with a user instruction, and
wherein the creasing control unit is configured to control the creasing unit to crease the cover sheet at the determined creasing position.

9. An image forming apparatus comprising:
an image forming unit configured to form an image on a sheet;
a creasing control unit configured to control a creasing unit to crease a sheet conveyed from the image forming unit; and
a case binding control unit configured to control a case binding unit to glue inner sheets with a cover sheet and to form a bookbinding product from the inner sheets and the cover sheet, wherein the inner sheets are conveyed from the image forming unit and are not creased by the creasing unit while being conveyed toward the case binding unit, and the cover sheet is conveyed from the image forming unit and is creased by the creasing unit while being conveyed toward the case binding unit,
wherein the creasing control unit is configured to determine a creasing position of the cover sheet based on at least (i) a thickness of a spine cover of a bookbinding product which is formed from the cover sheet and the inner sheets and (ii) an offset value which is a length from an edge of the spine cover, wherein the thickness of the spine cover is determined based on a type of the cover sheet, a type of the inner sheets and a number of the inner sheets, and the offset value is a value input in accordance with a user instruction, and
wherein the creasing control unit is configured to control the creasing unit to crease the cover sheet at the determined creasing position.

Assignees

• Canon Kk

Inventors

• Sakata Munetaka

Classifications

• G03G15/6544

  Details about the binding means or procedure · CPC title

• G03G2215/00877

  Folding device · CPC title

• G03G2215/00936

  Bookbinding · CPC title

• B42C7/005 Primary

  Creasing the back of covers · CPC title