A printing system comprises: a printing unit configured to print an image on a sheet; and a control unit configured to control to perform creasing at a first pressure at a portion, corresponding to an edge of a spine cover, of the sheet on which the printing unit has printed the image, and perform creasing at a second pressure different from the first pressure at a portion of the sheet that corresponds to a hinge.

An image forming apparatus determines whether crease processing at a plurality of portions set on the sheet includes crease processing on two, front and back surfaces of the sheet; determines, if it is determined that crease processing includes crease processing on the two surfaces of the sheet, whether a connected post-processing apparatus that performs crease processing on a sheet can perform crease processing on the two, front and back surfaces of the sheet by one feeding; and controls, if it is determined that the connected post-processing apparatus cannot perform crease processing on the two surfaces by one feeding, to change, to one of the front and back surfaces of the sheet based on attribute information of the sheet, a surface to be processed in crease processing at the plurality of portions.

A method for production of adhesive-bound printed products in a machine belonging to an adhesive-binder line. To change over from one job under production to a following job, supplied printed products of the following job are detected via a barcode and stopped prior to being fed into the machine of the adhesive-binder line. Remaining printed products of a preceding job are moved and fully processed through individual processing stations of the machine while the printed products of the following job remain in a waiting position in front of the machine. After completing the last printed product of the preceding job, an empty withdrawal of covers stored in a cover deposit and belonging to the following job is initiated until it is ensured that the stored covers are available for the printed products of the following job. After determining that a withdrawn cover securely matches the printed products of the following job, stopped printed products of the following job are released with a main control and fed into the machine for being processed via the individual processing stations.

A method for production of adhesive-bound printed products in a machine belonging to an adhesive-binder line. To change over from one job under production to a following job, supplied printed products of the following job are detected via a barcode and stopped prior to being fed into the machine of the adhesive-binder line. Remaining printed products of a preceding job are moved and fully processed through individual processing stations of the machine while the printed products of the following job remain in a waiting position in front of the machine. After completing the last printed product of the preceding job, an empty withdrawal of covers stored in a cover deposit and belonging to the following job is initiated until it is ensured that the stored covers are available for the printed products of the following job. After determining that a withdrawn cover securely matches the printed products of the following job, stopped printed products of the following job are released with a main control and fed into the machine for being processed via the individual processing stations.

Disclosed are various embodiments relating to verifying a printed work comprises a correct number of pages. Associated with a stack comprising one or more pages is an identifier that may be used to obtain an expected value for a physical characteristic of the pages in the stack. A sensor may then measure an actual value for the physical characteristic of the pages in the stack. Before binding the pages in the stack, the expected value may be compared to the actual value in order to verify the stack comprises the correct number of pages.

Disclosed are various embodiments relating to verifying a printed work comprises a correct number of pages. Associated with a stack comprising one or more pages is an identifier that may be used to obtain an expected value for a physical characteristic of the pages in the stack. A sensor may then measure an actual value for the physical characteristic of the pages in the stack. Before binding the pages in the stack, the expected value may be compared to the actual value in order to verify the stack comprises the correct number of pages.

A method for making a book is provided in the embodiments of the present invention. The method mainly comprises: cutting printed sheets for a book, brushing glue onto edges of the printed sheets, bonding the printed sheets through the glue, and positioning and fixing a plurality of bonded printed sheets by utilizing a right-angled mold; perforating each, of the positioned and fixed printed sheets, and stringing holes of the printed sheets so as to reinforce the printed sheets; and splicing front endpaper and rear endpaper onto endpaper connection cloth, and then, bonding the endpaper and bookblocks. The embodiments of the present invention adopt a right-angled mold to position register and fix a plurality of bonded printed sheets, and pages are unlikely to dislocate, thereby guaranteeing the binding quality of the book, improving the attractiveness of the book, reducing a making time of the book, and improving the production efficiency of the book. The method of the present invention can break through a size limitation of a traditional book at 787*544 mm, thereby making a book of a greater size.

A method for making a book is provided in the embodiments of the present invention. The method mainly comprises: cutting printed sheets for a book, brushing glue onto edges of the printed sheets, bonding the printed sheets through the glue, and positioning and fixing a plurality of bonded printed sheets by utilizing a right-angled mold; perforating each, of the positioned and fixed printed sheets, and stringing holes of the printed sheets so as to reinforce the printed sheets; and splicing front endpaper and rear endpaper onto endpaper connection cloth, and then, bonding the endpaper and bookblocks. The embodiments of the present invention adopt a right-angled mold to position register and fix a plurality of bonded printed sheets, and pages are unlikely to dislocate, thereby guaranteeing the binding quality of the book, improving the attractiveness of the book, reducing a making time of the book, and improving the production efficiency of the book. The method of the present invention can break through a size limitation of a traditional book at 787*544 mm, thereby making a book of a greater size.

A printing system obtains a print job, analyzes the obtained print job, and imposes print pages to a total of four surfaces of a print target sheet including two surfaces on each of front and back in accordance with a bookbinding format of the analyzed print job. As for an imposition method, if the bookbinding format of the print job is particular two fold bookbinding for which processing of two-folding a sheet and bonding a plurality of two-folded sheets is performed, imposition is performed while reserving a glue surface not to print out of the four surfaces of the print target sheet.

Imaging apparatus and methods for bindery systems are disclosed. An example method includes engaging a signature assembly with an end of a separator to cause 1) a first page of the signature assembly to be disposed on a platform and 2) a second page of the signature assembly to be disposed on the side of the platform; drawing the first page toward the platform; and imaging the first page when the first page is on the platform.