A book binding apparatus includes: a first processing section which is configured to perform a first process on a medium; a second processing section which is configured to perform a second process on the medium on which the first processing section has performed the first process; a first discharging section to which the medium on which the first processing section has performed the first process is discharged; and a second discharging section to which the medium on which the first processing section has performed the first process, and on which the second processing section has performed the second process is discharged.

An image forming apparatus including: a printer; a puncher configured to punch the sheet printed by the printer; a binder configured to perform a bookbinding process to form a bound product in which a binding member penetrates punch holes of sheets; a first detector configured to detect a first jam of a sheet in the binder; a second detector configured to detect a second jam of a sheet which occurs upstream of the binder; an annunciator configured to notify information; and a controller configured to cause the annunciator to notify first instruction information for instructing removal of a sheet and the binding member, when the first detector has detected the first jam; and cause the annunciator to notify second instruction information for instructing removal of the second jam when the second detector has detected the second jam and the first detector has not detected the first jam.

A sheet binding device includes a first tooth-shaped member that has plural arranged teeth, and a second tooth-shaped member that has plural arranged teeth, bites the first tooth-shaped member to clamp and bind sheets in cooperation with the first tooth-shaped member, and is tilted relative to the first tooth-shaped member from a beginning of biting to a completion of biting.

Particularly, proposed is a manufacturing method for a paper-made binding comb. The manufacturing method includes: providing a combined roll paper in which an inner roll paper and an outer roll paper are combined at a low-temperature by a low-temperature-sensitive molding material therebetween, the inner roll paper and the outer roll paper, each having a first side surface coated with a high-temperature-sensitive bonding material; slitting the combined roll paper at a predetermined width, and cutting the slitted roll paper such that the slitted roll paper has a comb part and a comb-connecting part, thereby forming a flat comb-shaped paper-binding piece; raising a temperature to the low-temperature such that only the low-temperature-sensitive molding material is melted; and transferring the flat comb-shaped paper-binding piece to a molding apparatus and molding the flat comb-shaped paper-binding piece into a cylindrical shape.

A loose-leaf binder comprises a back and a loose-leaf coil. The back comprises a lower sheet and an upper sheet. Each side of the back is formed with a track having a downward opening. At least one end of the back is formed with an open end portion. Each lateral side edge of the lower sheet is formed with a slightly upwardly projecting flange. The lower sheet is formed with at least one engaging slot corresponding to the open end portion of the flange. The loose-leaf coil to be selectively disposed below the back is formed with continuous C-shaped portions by bending a wire. Each end of each C-shaped portion is formed with a track section to slide in the track of the back. The track section can be selectively engaged and restricted within the engaging slot of the lower sheet of the back.

A loose-leaf binder comprises a back and a loose-leaf coil. The back comprises a lower sheet and an upper sheet. Each side of the back is formed with a track having a downward opening. At least one end of the back is formed with an open end portion. Each lateral side edge of the lower sheet is formed with a slightly upwardly projecting flange. The lower sheet is formed with at least one engaging slot corresponding to the open end portion of the flange. The loose-leaf coil to be selectively disposed below the back is formed with continuous C-shaped portions by bending a wire. Each end of each C-shaped portion is formed with a track section to slide in the track of the back. The track section can be selectively engaged and restricted within the engaging slot of the lower sheet of the back.

A loose-leaf binder device comprises a back, two end plugs that can selectively close two ends of the back, and a loose-leaf coil for binding inner pages and selectively disposed below the back. The back is formed with an insert slot. A retaining hole communicating with the insert slot is formed on a portion of the back abutting upon an end edge. The end plug is integrally formed with a resilient member to be inserted into the insert slot. A top surface of the resilient member is formed with one post corresponding to the retaining hole of the back. A free end of the resilient member is formed with an upward compressing edge. Thus, the post on the resilient member can be actuated through a compressing edge according to the resilient member of the end plug so that the post is selectively engaged with or disengaged from the back.

A loose-leaf binder device comprises a back, two end plugs that can selectively close two ends of the back, and a loose-leaf coil for binding inner pages and selectively disposed below the back. The back is formed with an insert slot. A retaining hole communicating with the insert slot is formed on a portion of the back abutting upon an end edge. The end plug is integrally formed with a resilient member to be inserted into the insert slot. A top surface of the resilient member is formed with one post corresponding to the retaining hole of the back. A free end of the resilient member is formed with an upward compressing edge. Thus, the post on the resilient member can be actuated through a compressing edge according to the resilient member of the end plug so that the post is selectively engaged with or disengaged from the back.

A bound collection of leaves having a spine and a method of its manufacture are disclosed. Each leaf of a first plurality of leaves of the bound collection includes a first pattern of tabs by which that leaf is bound. The tabs of the first pattern are distributed along a binding axis of that leaf that is parallel to a spine axis of the spine. Each leaf of a second plurality of leaves of the bound collection includes a second pattern of tabs different than the first pattern by which that leaf is bound. The tabs of the second pattern are distributed along a binding axis of that leaf that is parallel to the spine axis. Each tab of the first pattern and second pattern of tabs extends in a direction orthogonal to the binding axis from within an unbound region to a binding-side edge of that leaf.

A bound collection of leaves having a spine and a method of its manufacture are disclosed. Each leaf of a first plurality of leaves of the bound collection includes a first pattern of tabs by which that leaf is bound. The tabs of the first pattern are distributed along a binding axis of that leaf that is parallel to a spine axis of the spine. Each leaf of a second plurality of leaves of the bound collection includes a second pattern of tabs different than the first pattern by which that leaf is bound. The tabs of the second pattern are distributed along a binding axis of that leaf that is parallel to the spine axis. Each tab of the first pattern and second pattern of tabs extends in a direction orthogonal to the binding axis from within an unbound region to a binding-side edge of that leaf.