- HP All-in-One Printer Manual

114 Theory of operation Q2431-90912
Stapler unit operation
The stapler unit uses the stapler unit motor (M104), staple cam, staple press head plates, staple
arm, and support base to staple media together. The staple mode is enabled by using the
printer’s settings (see “Stapler/stacker submenu” on page 51). The stapling procedure begins
when media enters the staple guide and the DC controller PCA sends the end-of-job signal to
the stapler/stacker driver PCA.
Figure 45. Stapler unit
After the paddle and jogger guides align the edges of the media, the stapler/stacker PCA
activates the stapler unit motor (M104). The two staple cams begin to rotate.
Figure 46. Staple operation (1 of 3)
Stapler unit
Staple motor (M104)
Staples
Staple press
head plates
Staple cams
Support base
Staple cam 1
Staple press
head plate2
Media
Side view
Front view
Staple press
head plate 2
Staple cam 2
Staple press
head plate 1
Staple press
head plate 1
Staple cam 1
Staples