Variable force wiper for maintenance station of imaging device
View Patent ↗A wiper for a maintenance station of an imaging device includes a foundational body and a flexible blade. The body rigidly attaches to the maintenance station. The blade attaches to the body. The blade scrapes fluid and debris from a printhead during use. The blade comprises a flexible material having terminal sections intervened by a central section. Each terminal section connects to the body with a thicker expanse of flexible material, whereas the central section connects to the body with a thinner expanse. The connection provides the terminal sections with a higher wiping force and a shorter effective beam length for wiping an encapsulant of the printhead and gives while the central section a lower wiping force and a longer effective beam length for wiping a nozzle plate of the printhead. The embodiments note curved surfaces with variable radiuses where the expanses of flexible material connect to the body.
1. A wiper for a maintenance station of an imaging device, comprising:
a foundational body of the wiper that includes an open slot configured for receipt of a rigid member of the maintenance station to keep the foundational body of the wiper rigid during use; and
a flexible blade disposed on the foundational body of the wiper and configured for scraping fluid and debris from a printhead of the imaging device upon deflection, the flexible blade being formed of a flexible material having two terminal sections and a central section defining a longitudinal extent of the blade, wherein each of the two terminal sections connects to the foundational body with a shorter effective beam length for wiping an encapsulant of the printhead while the central section of the blade connects to the foundational body with a longer effective beam length for wiping a nozzle plate of the printhead so that the flexible blade imparts a different wiping force to each of the encapsulant and the nozzle plate of the printhead corresponding to a different durability of each of the encapsulant and the nozzle plate of the printhead.
2. The wiper of claim 1 , wherein said each of the two terminal sections connects to the foundational body with a thicker expanse of said flexible material whereas the central section connects to the body with a thinner expanse of said flexible material.
3. The wiper of claim 2 , wherein said each of the two terminal sections connects to the foundational body with a same exact thickness of said thicker expanse.
4. The wiper of claim 1 , wherein the shorter effective beam length provides a higher wiping force to said each of the two terminal sections of the flexible blade and the longer effective beam length provides a lower wiping force to said central section of the flexible blade.
5. The wiper of claim 1 , wherein the open slot defines a substantially rectangular opening.
6. The wiper of claim 1 , wherein the flexible material is a thermoplastic elastomer.