Patent Publication Number: US-2023158801-A1

Title: Expansion members

Description:
BACKGROUND 
     Imaging systems, such as printers, copiers, scanners, etc., may be used to scan a physical medium to capture and/or record information included on the physical medium, form markings on a physical medium, such as text, images, etc. In some examples, imaging systems may scan a physical medium and/or form markings on a physical medium by performing a job. In some examples, the job can be a scan job that can include scanning a physical medium optically to capture and/or record information included on the physical medium. In some examples, the job can be a print job that can include forming markings such as text and/or images by transferring a print material such as toner to a physical medium. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a side view of an example of an apparatus having an expansion member consistent with the disclosure. 
         FIG.  2 A  is a side view of an example of an apparatus having an expansion member and a cam in a disengaged position consistent with the disclosure. 
         FIG.  2 B  is a side view of an example of an apparatus having an expansion member and a cam in an engaged position consistent with the disclosure. 
         FIG.  3 A  is a side view of an example of an apparatus having an expansion member and a solenoid in a disengaged position consistent with the disclosure. 
         FIG.  3 B  is a side view of an example of an apparatus having an expansion member and a solenoid in an engaged position consistent with the disclosure. 
         FIG.  4 A  is a side view of an example of an apparatus having an expansion member, a lever, and a solenoid in a disengaged position consistent with the disclosure. 
         FIG.  4 B  is a side view of an example of an apparatus having an expansion member, a lever, and a solenoid in an engaged position consistent with the disclosure. 
         FIG.  5    is a side section view of an example of a portion of an imaging device having an expansion member consistent with the disclosure. 
         FIG.  6 A  is a perspective view of an example of an apparatus having an expansion member and a compression nut in a disengaged position consistent with the disclosure. 
         FIG.  6 B  is a perspective view of an example of an apparatus having an expansion member and a compression nut in an engaged position consistent with the disclosure. 
         FIG.  7 A  is a side view of an example of an apparatus having a drive shaft with a tapered diameter and an expansion member consistent with the disclosure. 
         FIG.  7 B  is a side view of an example of an apparatus having a drive shaft with a tapered diameter and an expansion member consistent with the disclosure. 
         FIG.  8    is a perspective view of an apparatus having a cartridge flange and a grip structure consistent with the disclosure. 
         FIG.  9 A  is a side section view of an example of a system consistent with the disclosure. 
         FIG.  9 B  is a side section view of an example of a system consistent with the disclosure. 
         FIG.  10    is a perspective view of an example of a grip structure including a circular reception member consistent with the disclosure. 
         FIG.  11    is a perspective view of an example of a grip structure including a semi-circular reception member consistent with the disclosure. 
         FIG.  12    is a perspective view of an example of a grip structure including a plurality of semi-circular reception members consistent with the disclosure. 
         FIG.  13    is a perspective view of an example of a grip structure including a plurality of circular extruded members consistent with the disclosure. 
         FIG.  14    is a perspective view of an example of a grip structure including a plurality of triangular extruded members consistent with the disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Imaging devices may perform print jobs using physical media. For example, a print job may include forming text and/or images on physical media, such as a physical print medium. In some examples, a “medium” may include paper, cloth, plastics, composite, metal, substrates, or the like and/or combinations thereof. As used herein, the term “imaging device” refers to any hardware device with functionalities to physically produce representation(s) on a physical print medium. For example, the imaging device can be a laser printer, among other examples. 
     In some examples, an imaging device may utilize a print cartridge having a drive mechanism to form text and/or images on the physical media. As used herein, the term “print cartridge” refers to a container including print material. For example, the print cartridge can include toner to form text and/or images on physical media during a print job. 
     The print cartridge may be rotated during a print job process in order to form text and/or images on physical media. For example, the imaging device may include a drive mechanism such as a motor and a gear system that can interface with the print cartridge to rotate the cartridge during the print job. 
     Print cartridges may be removed from the imaging device. For example, print cartridges may be removed for maintenance, replacement, cleaning, among other examples. However, alignment of the print cartridge with the gear system during replacement of a print cartridge may be difficult. 
     Expansion members, according to the disclosure, can allow for an expansion member in an imaging device to expand from a first diameter to a second diameter to engage with a grip structure on a print cartridge for a simple and effective drive system for a print cartridge. The friction fit between the expansion member and the grip structure can allow the imaging device to rotate the print cartridge during a print job. Alignment between the grip structure of the print cartridge and the expansion member can be simplified relative to previous approaches utilizing a gear system, dongle gears, and/or other various twisted prism and/or lobbed drive approaches, providing for an easy-align system with lower force for a user to install the print cartridge. Further, situations in which a jam in the drive mechanism damaging the print cartridge can be reduced, as the friction fit between the expansion member and the grip structure can be specified such that the expansion member can slip relative to the grip structure when a threshold torque is exceeded. 
       FIG.  1    is a side view of an example of an apparatus  100  having an expansion member  106  consistent with the disclosure. The apparatus  100  can include a drive shaft  102 , a compression flange  104 , an expansion member  106 , and a compression member  108 . The drive shaft  102  can include an axis  103 . 
     The apparatus  100  can be included in an imaging device. For example, an imaging device can utilize the apparatus  100  to rotate a print cartridge during a print job, as is further described in connection with  FIG.  9   . 
     The apparatus  100  can include a drive shaft  102 . As used herein, the term “drive shaft” refers to a mechanical component to transmit torque and rotation. For example, the apparatus  100  can utilize the drive shaft  102  to transmit torque to rotate a print cartridge during a print job. The drive shaft  102  can include axis  103 . The drive shaft  102  can rotate about the axis  103 . 
     The apparatus  100  can include a compression flange  104 . As used herein, the term “flange” refers to a projecting collar from another piece of material. For example, the compression flange  104  can be a projecting collar from a piece of material. The compression flange  104  can be utilized in conjunction with a compression mechanism  108  in order to axially compress the expansion member  106  to cause the expansion member  106  to expand, as is further described herein. In some examples, the compression flange  104  can be connected to the drive shaft  102 . In some examples, the compression flange  104  ca be connected to an intermediary piece (e.g., not illustrated in  FIG.  1   ). 
     As illustrated in  FIG.  1   , the apparatus  100  can include the expansion member  106 . As used herein, the term “member” refers to a constituent component of a composite whole. The expansion member  106  can, when compressed axially, expand its diameter. For example, the expansion member  106  can compressed such that its diameter expands from a first diameter (e.g., as illustrated in  FIG.  1   ) to a second diameter which is larger than the first diameter, as is further described herein. 
     Although the expansion member  106  is illustrated in  FIG.  1    as a cylindrical shape having a circular cross section, examples of the disclosure are not so limited. For example, the expansion member  106  can include a square cross section, rectangular cross section, triangular cross section, irregular cross section (e.g., gear shaped), and/or combinations thereof (e.g., different portions of the expansion member  106  having different cross sections). 
     As described above, in some examples, the expansion member  106  can include an irregular shaped cross section. The irregular shaped cross section can include, for instance, a gear shape. The gear shaped expansion member  106  can include, for example, a spur gear, helical gear, bevel gear, and/or other gear-shaped cross section. In an example of the expansion member  106  having a spur gear cross section, the gear teeth can be triangular, rectangular, square, trapezoidal, saw-tooth shaped, and/or other shapes that can result in volute or involute gear teeth. 
     The expansion member  106  can be of a material that when compressed axially, allows it to expand its diameter. Additionally, the expansion member  106  can be a material selected based on its friction coefficient and/or its durometer hardness. For example, the expansion member  106  can be a rubber elastomer, urethane, silicone, and/or any other polymer or elastomer. 
     The expansion member  106  can be located proximate to the compression flange  104 . For example, the expansion member  106  can be compressed by a compression mechanism  108  axially using the compression flange  104 , as is further described herein. 
     The apparatus  100  can include a compression mechanism  108 . As used herein, the term “compression mechanism” refers to at least one part intended to accomplish a purpose. For example, the compression mechanism  108  can comprise various parts in order to cause the expansion member  106  to expand from a first diameter to a second diameter. For instance, the compression mechanism  108  can include a cam, a solenoid, a solenoid and a lever, a compression nut, and/or a tapered drive shaft, as is further described herein with respect to  FIGS.  2 - 7   . 
     As illustrated in  FIG.  1   , the drive shaft  102 , the compression flange  104 , and the expansion member  106  can be coaxially located relative to each other. For example, the drive shaft  102 , the compression flange  104 , and the expansion member  106  can be coaxially located with the axis  103 . 
       FIG.  2 A  is a side view of an example of an apparatus  200  having an expansion member  206  and a cam  212  in a disengaged position consistent with the disclosure. The apparatus  200  can include a drive shaft  202 , a compression flange  204 , an expansion member  206 , a shaft flange  210 , and a cam  212 . The drive shaft  202  can include an axis  203 . 
     As illustrated in  FIG.  2 A , the compression mechanism (e.g., compression mechanism  108 , previously described in connection with  FIG.  1   ) can be a shaft flange  210  and cam  212 . As used herein, the term “cam” refers to a rotatable piece in a mechanical linkage. For example, the cam  212  can rotate about an axis (e.g., not illustrated in  FIG.  2 A ), as is further described herein. 
     In the orientation illustrated in  FIG.  2 A , the expansion member  206  can be at a first diameter “D1”, as indicated in  FIG.  2 A . The disengaged position of the cam  212  can correspond to the expansion member  206  being at the first diameter “D1”. 
     The cam  212  can move from a disengaged position to an engaged position to cause the compression flange  204  to translate linearly with respect to the cam  212 . For example, the cam  212  can rotate (e.g., counterclockwise, as oriented in  FIG.  2 A ) to cause a force to be applied to the shaft flange  210 . The force applied to the shaft flange  210  by the cam  212  rotating from the disengaged position to the engaged position can cause the shaft flange  210  (and the compression flange  204 ) to translate linearly away from the cam  212 . Linear translation of the compression flange  204  can axially compress the expansion member  206 , as is further described in connection with  FIG.  2 B . 
       FIG.  2 B  is a side view of an example of an apparatus  200  having an expansion member  206  and a cam  212  in an engaged position consistent with the disclosure. The apparatus  200  can include a drive shaft  202 , a compression flange  204 , an expansion member  206 , a shaft flange  210 , and a cam  212 . The drive shaft  202  can include an axis  203 . 
     As previously described in connection with  FIG.  2 A , the cam  212  can move (e.g., rotate) from the disengaged position to the engaged position. Rotation of the cam  212  to the engaged position can cause the shaft flange  210  and the compression flange  204  to translate linearly (e.g., to the left, as oriented in  FIG.  2 B ) with respect to the cam  212 . 
     Linear translation of the compression flange  204  can axially compress the expansion member  206 . For example, as the compression flange  204  translates to the left, the compression flange  204  can apply linear (and axial) forces to the expansion member  206  to cause the expansion member  206  to expand from the first diameter (e.g., D1) to the second diameter “D2”. In other words, the rotation of the cam  212  from the disengaged position to the engaged position can compress the expansion member  206  such that the expansion member  206  expands from a first diameter “D1” to a second diameter “D2”, where the second diameter “D2” is greater than the first diameter “D1”. When at the second diameter D2, the expansion member  206  can interface with a grip structure of a print cartridge to rotate the print cartridge, as is further described in connection with  FIGS.  8 - 14   . 
       FIG.  3 A  is a side view of an example of an apparatus  300  having an expansion member  306  and a solenoid  314  in a disengaged position consistent with the disclosure. The apparatus  300  can include a drive shaft  302 , a compression flange  304 , an expansion member  306 , a shaft flange  310 , and a solenoid  314 . The drive shaft  302  can include an axis  303 . 
     As illustrated in  FIG.  3 A , the compression mechanism (e.g., compression mechanism  108 , previously described in connection with  FIG.  1   ) can be a shaft flange  310  and solenoid  314 . As used herein, the term “solenoid” refers to a device that converts electrical energy to mechanical energy. For example, the solenoid  314  can create a magnetic field from electric current to create linear motion. The solenoid  314  can be coaxially located relative to the shaft flange  310 . 
     In the orientation illustrated in  FIG.  3 A , the expansion member  306  can be at a first diameter “D1”, as indicated in  FIG.  3 A . The disengaged position of the solenoid  314  can correspond to the expansion member  306  being at the first diameter “D1”. 
     The solenoid  314  can move from a disengaged position to an engaged position to cause the compression flange  304  to translate linearly with respect to the solenoid  314 . For example, the solenoid  314  can translate (e.g., to the left, as oriented in  FIG.  3 A ) to cause a force to be applied to the shaft flange  310 . The force applied to the shaft flange  310  by the solenoid  314  translating from the disengaged position to the engaged position can cause the shaft flange  310  (and the compression flange  304 ) to translate linearly away from the solenoid  314 . Linear translation of the compression flange  304  can axially compress the expansion member  306 , as is further described in connection with  FIG.  3 B . 
       FIG.  3 B  is a side view of an example of an apparatus  300  having an expansion member  306  and a solenoid  314  in an engaged position consistent with the disclosure. The apparatus  300  can include a drive shaft  302 , a compression flange  304 , an expansion member  306 , a shaft flange  310 , and a solenoid  314 . The drive shaft  302  can include an axis  303 . 
     As previously described in connection with  FIG.  3 A , the solenoid  314  can move (e.g., translate) from the disengaged position to the engaged position. Translation of the solenoid  314  to the engaged position can cause the shaft flange  310  and the compression flange  304  to translate linearly (e.g., to the left, as oriented in  FIG.  3 B ) with respect to the solenoid  314 . 
     Linear translation of the compression flange  304  can axially compress the expansion member  306 . For example, as the compression flange  304  translates to the left, the compression flange  304  can apply linear (and axial) forces to the expansion member  306  to cause the expansion member  306  to expand from the first diameter (e.g., D1) to the second diameter “D2”. In other words, the translation of the solenoid  314  from the disengaged position to the engaged position can compress the expansion member  306  such that the expansion member  306  expands from a first diameter “D1” to a second diameter “D2”, where the second diameter “D2” is greater than the first diameter “D1”. When at the second diameter D2, the expansion member  306  can interface with a grip structure of a print cartridge to rotate the print cartridge, as is further described in connection with  FIGS.  8 - 14   . 
       FIG.  4 A  is a side view of an example of an apparatus  400  having an expansion member  406 , a lever  416 , and a solenoid  414  in a disengaged position consistent with the disclosure. The apparatus  400  can include a drive shaft  402 , a compression flange  404 , an expansion member  406 , a shaft flange  410 , a solenoid  414 , and a lever  416 . The drive shaft  402  can include an axis  403 . 
     As illustrated in  FIG.  4 A , the compression mechanism (e.g., compression mechanism  108 , previously described in connection with  FIG.  1   ) can be a shaft flange  410 , solenoid  414 , and a lever  416 . The shaft flange  410  can be connected to the drive shaft  402 . The solenoid  414  can be spaced apart from the drive shaft  402 . 
     The apparatus  400  can include a lever  416 . As used herein, the term “lever” refers to a beam that can pivot at a fixed hinge. For example, the lever  416  can pivot about an axis (e.g., not illustrated in  FIG.  4 A ). 
     In the orientation illustrated in  FIG.  4 A , the expansion member  406  can be at a first diameter “D1”, as indicated in  FIG.  4 A . The disengaged position of the solenoid  414  can correspond to the expansion member  406  being at the first diameter “D1”. 
     The solenoid  414  can move from a disengaged position to an engaged position to cause the lever  416  to pivot to cause the compression flange  404  to translate linearly with respect to the solenoid  414 . For example, the solenoid  414  can translate (e.g., to the right, as oriented in  FIG.  4 A ) to cause a force to be applied to the lever  416 , resulting in rotation of the lever  416  (e.g., counterclockwise, as oriented in  FIG.  4 A ) to cause a force to be applied to the shaft flange  410 . The force applied to the shaft flange  410  by the solenoid  414  translating from the disengaged position to the engaged position to cause rotation of the lever  416  can cause the shaft flange  410  (and the compression flange  404 ) to translate linearly to the left (e.g., as oriented in  FIG.  4 A ). That is, actuation of the solenoid  414  can cause the lever  416  to pivot to cause the linear translation of the compression flange  404 . Linear translation of the compression flange  404  can axially compress the expansion member  406 , as is further described in connection with  FIG.  4 B . 
       FIG.  4 B  is a side view of an example of an apparatus  400  having an expansion member  406 , a lever  416 , and a solenoid  414  in an engaged position consistent with the disclosure. The apparatus  400  can include a drive shaft  402 , a compression flange  404 , an expansion member  406 , a shaft flange  410 , a solenoid  414 , and a lever  416 . The drive shaft  402  can include an axis  403 . 
     As previously described in connection with  FIG.  4 A , the solenoid  414  can move (e.g., translate) from the disengaged position to the engaged position. Translation of the solenoid  414  to the engaged position can cause the lever  416  to pivot to cause the shaft flange  410  and the compression flange  404  to translate linearly (e.g., to the left, as oriented in  FIG.  4 B ). 
     Linear translation of the compression flange  404  can axially compress the expansion member  406 . For example, as the compression flange  404  translates to the left, the compression flange  404  can apply linear (and axial) forces to the expansion member  406  to cause the expansion member  406  to expand from the first diameter (e.g., D1) to the second diameter “D2”. In other words, the translation of the solenoid  414  from the disengaged position to the engaged position can cause the lever  416  to pivot to compress the expansion member  406  such that the expansion member  406  expands from a first diameter “D1” to a second diameter “D2”, where the second diameter “D2” is greater than the first diameter “D1”. When at the second diameter D2, the expansion member  406  can interface with a grip structure of a print cartridge to rotate the print cartridge, as is further described in connection with  FIGS.  8 - 14   . 
       FIG.  5    is a side section view of an example of a portion of an imaging device  520  having an expansion member  506  consistent with the disclosure. The portion of the imaging device  520  can include a drive shaft  502 , a compression flange  504 , an expansion member  506 , and a compression nut  522 . The drive shaft  502  can include an axis  503 . 
     As illustrated in  FIG.  5   , the portion of the imaging device  520  can include a drive shaft  502 . The compression flange  504  can be coaxial with the axis  503  of the drive shaft  502 . 
     The portion of the imaging device  520  can include an expansion member  506 . The expansion member  506  can be compressed axially to expand its diameter from a first diameter to a second diameter via a compression mechanism. For example, the compression mechanism can cause the expansion member to expand from the first diameter to the second diameter. In some examples, the compression mechanism can include a compression nut  522 , as is further described herein. 
     As illustrated in  FIG.  5   , the portion of the imaging device  520  can include a compression nut. As used herein, the term “compression nut” refers to a fastener utilized to compress an expansion member. For example, the expansion member  506  can be compressed between the compression flange  504  and the compression nut  522 . The compression nut  522  can be coaxial with the axis  503  and be located proximate to the expansion member  506 . 
       FIG.  6 A  is a perspective view of an example of an apparatus  620  having an expansion member  606  and a compression nut  622  in a disengaged position consistent with the disclosure. The apparatus  620  can include a drive shaft  602 , a compression flange  604 , an expansion member  606 , and a compression nut  622 . The drive shaft  602  can include an axis  603 . 
     As illustrated in  FIG.  6 A , the compression mechanism (e.g., compression mechanism  108 , previously described in connection with  FIG.  1   ) can be a compression nut  622 . As illustrated in  FIG.  6 A , the compression nut  622  can include a beveled guide surface. For example, the beveled guide surface can be an area of the compression nut  622  that is inclined in order to assist a part of another device along the inclined area. For example, although not illustrated in  FIG.  6 A , another device can interface with the compression nut  622  (e.g., and the beveled guide surface). The another device can cause the compression nut  622  to rotate about the axis  603 . 
     The compression nut  622  can move from a disengaged position to an engaged position to compress the expansion member  606  against the compression flange  604 . For example, the compression nut  622  can rotate (e.g., counterclockwise, as oriented in  FIG.  6 A ) about the axis  603  to translate linearly (e.g., to the right, as oriented in  FIG.  6 B ) with respect to the drive shaft  602  to cause a force to be applied to the expansion member  606 . Linear translation of the compression nut  622  can axially compress the expansion member  606 , as is further described in connection with  FIG.  4 B . 
     Although not illustrated in  FIG.  6 A , in some examples the drive shaft  602  can be threaded. The compression nut  622  can engage with the threads on the drive shaft  602  such that when rotated, the compression nut  622  can translate linearly towards the compression flange  604 . 
       FIG.  6 B  is a perspective view of an example of an apparatus  620  having an expansion member  606  and a compression nut  622  in an engaged position consistent with the disclosure. The apparatus  620  can include a drive shaft  602 , a compression flange  604 , an expansion member  606 , and a compression nut  622 . The drive shaft  602  can include an axis  603 . 
     As previously described in connection with  FIG.  6 A , the compression nut  622  can move (e.g., rotate about the axis  603  to translate linearly with respect to the axis  603 ) from the disengaged position to the engaged position. Linear translation of the compression nut  622  can axially compress the expansion member  606 . For example, as the compression nut  622  rotates about the axis  603  to translates to the right, the compression nut  622  can apply linear (and axial) forces to the expansion member  606  compress the expansion member  606  against the compression flange  604  to cause the expansion member  606  to expand from the first diameter (e.g., D1) to the second diameter “D2”. In other words, the translation of the compression nut  622  from the disengaged position to the engaged position can compress the expansion member  606  into the compression flange  604  such that the expansion member  606  expands from a first diameter “D1” to a second diameter “D2”, where the second diameter “D2” is greater than the first diameter “D1”. When at the second diameter D2, the expansion member  606  can interface with a grip structure of a print cartridge to rotate the print cartridge, as is further described in connection with  FIGS.  8 - 14   . 
       FIG.  7 A  is a side view of an example of an apparatus  720  having a drive shaft  702  with a tapered diameter and an expansion member  706  consistent with the disclosure. The apparatus  720  can include a drive shaft  702 , a compression flange  704 , an expansion member  706 , and a compression mechanism  708 . The drive shaft  402  can include an axis  403 , a first end  724 , and a second end  726 . 
     As illustrated in  FIG.  7 A , the apparatus  720  can include a compression mechanism  708 . The compression mechanism  708  can be, for example, a cam, a solenoid, a solenoid and a lever, and/or a compression nut to be utilized in combination with the drive shaft  724  having the tapered diameter, as is further described herein. 
     The drive shaft  702  can include a tapered diameter. For example, the diameter of the drive shaft  702  can taper from a first end  724  having a first diameter to a second end  726  having a second diameter. The second diameter of the second end  726  can be larger than the first diameter of the first end  724 . In other words, the diameter of the drive shaft  702  can get larger from the first end  724  to the second end  726 . The compression flange  704  can be located proximate to the second end  726 . 
     The compression mechanism  708  can cause the expansion member  706  to translate linearly relative to the drive shaft  702  towards the second end  726  of the drive shaft  702  to cause the expansion member  706  to expand from the first diameter “D1” to the second diameter “D2”. For example, the compression mechanism  708  (e.g., a cam, a solenoid, a solenoid and a lever, and/or a compression nut utilizing the methods previously described in connection with  FIGS.  2 - 6   , respectively) can move from a disengaged position to an engaged position to cause the expansion member  706  to translate towards the second end  726  of the drive shaft  702 . 
       FIG.  7 B  is a side view of an example of an apparatus  720  having a drive shaft with a tapered diameter and an expansion member consistent with the disclosure. The apparatus  720  can include a drive shaft  702 , a compression flange  704 , an expansion member  706 , and a compression mechanism  708 . The drive shaft  402  can include an axis  403 , a first end  724 , and a second end  726 . 
     As previously described in connection with  FIG.  7 A , the compression mechanism  708  can move (e.g., translate) from the disengaged position to the engaged position. Translation of the compression mechanism  708  to the engaged position can cause the expansion member  706  to translate linearly (e.g., to the right, as oriented in  FIG.  7 B ). 
     Linear translation of the expansion member  706  can cause the diameter of the expansion member  706  to expand as it slides over the increasing diameter of the drive shaft  702  as it translates towards the second end  726  of the drive shaft  702 . For example, as the expansion member  706  translates to the right, the increasing diameter of the drive shaft  702  can stretch the diameter of the expansion member  706  from the first diameter (e.g., D1) to the second diameter “D2”. In other words, the translation of the expansion member  706  from the disengaged position to the engaged position can cause the expansion member  706  to translate toward the second end  726  to stretch the expansion member  706  such that the expansion member  706  expands from a first diameter “D1” to a second diameter “D2”, where the second diameter “D2” is greater than the first diameter “D1”. When at the second diameter D2, the expansion member  706  can interface with a grip structure of a print cartridge to rotate the print cartridge, as is further described in connection with  FIGS.  8 - 14   . 
       FIG.  8    is a perspective view of an apparatus  830  having a cartridge flange  832  and a grip structure  834  consistent with the disclosure. The grip structure  834  can include an inner surface  836 . 
     The apparatus  830  can be included on a print cartridge. For example, the print cartridge may be interfaced with an imaging device such that the imaging device can utilize the print cartridge during a print job, as is further described in connection with  FIG.  9   . 
     The apparatus  830  can include a cartridge flange  832 . For example, the cartridge flange  832  can be a projecting collar of material. The cartridge flange  832  can be connected to a print cartridge. 
     The apparatus  830  can include a grip structure  834 . As used herein, the term “grip structure” refers to a part or parts arranged together to accomplish a purpose. For example, the grip structure  834  can interface with an expansion member. The expansion member can expand from a first diameter to a second diameter, where the grip structure  834  can receive the expansion member, as is further described in connection with  FIGS.  9 - 14   . 
     The grip structure  834  can be oriented substantially normal to the cartridge flange  832 . As used herein, the term “substantially” intends that the characteristic does not have to be absolute but is close enough so as to achieve the characteristic. For example, “substantially normal” is not limited to absolute normal. For instance, the grip structure  834  can be within 0.5°, 1°, 2°, 5°, etc. of absolutely normal. 
     Although the grip structure  834  is described above as being oriented substantially normal to the cartridge flange  832 , examples of the disclosure are not so limited. For example, the grip structure  834  may be angled based on a shape of the expansion member. For instance, the expansion member may be cone shaped, and the grip structure  834  may be accordingly angled based on the cone shape of the expansion member, among other examples. 
     The grip structure  834  can include an inner surface  836 . The inner surface  836  can be a surface which interfaces with an outer surface of an expansion member. For example, a friction fit can occur between the inner surface  836  and an outer surface of an expansion member in order to transmit torque between the expansion member and the grip structure 834/print cartridge, as is further described with respect to  FIGS.  9 A and  9 B . 
     In some examples, the inner surface  836  can include striations. As used herein, the term “striation” refers to a series of ridges furrows, grooves, scratches, channels, or other marks in a surface in order to increase a coefficient of friction of the surface relative to the surface being smooth. For example, the striations of the inner surface  836  can better grip an external surface of an expansion member in order to transmit torque between the expansion member and the grip structure 834/print cartridge, as is further described with respect to  FIGS.  9 A and  9 B . 
     In some examples, the inner surface  836  can include a coarse surface. As used herein, the term “coarse surface” refers to a surface with a rough texture in order to increase a coefficient of friction of the surface relative to the surface being smooth. For example, the coarse surface of the inner surface  836  can better grip an external surface of an expansion member in order to transmit torque between the expansion member and the grip structure 834/print cartridge, as is further described with respect to  FIGS.  9 A and  9 B . The coarse surface can be machined and/or added (e.g., via fasteners, adhesives, etc.) 
       FIG.  9 A  is a side section view of an example of a system  940  consistent with the disclosure. The system  940  can include an imaging device  942  and a print cartridge  944 . 
     As illustrated in  FIG.  9 A , the system  940  can include an imaging device  942 . The imaging device  942  can include a drive shaft  902 , a compression flange  904 , and an expansion member  906  located proximate to the compression flange  904 . Although not illustrated in  FIG.  9 A , the imaging device  942  can include a compression mechanism. 
     The system  940  can include a print cartridge  944 . The print cartridge  944  can include a cartridge flange  932  and a grip structure  934 . The grip structure  934  can be shaped to receive the expansion member  906 , as is further described herein. 
     Print cartridges may be removed from imaging devices for various reasons. For example, the print cartridge  944  may be removed from the imaging device  942  for maintenance, replacement, cleaning, etc. Following such removal, the print cartridge  944  may be interfaced with the imaging device  942 , as is further described herein. 
     As illustrated in  FIG.  9 A , the expansion member  906  can be at a first diameter D1. The expansion member  906  being at the first diameter D1 can allow a user to position the print cartridge  944  in the imaging device  942  such that the expansion member  906  can be located in the grip structure  934 . 
     When the print cartridge  944  is positioned in the imaging device  942  and ready to be interfaced, a compression mechanism (e.g., compression mechanism  108 ,  708 , previously described in connection with  FIGS.  1  and  7   , respectively) can cause the expansion member  906  to expand from the first diameter D1 to a second diameter D2. For example, as previously described in connection with  FIGS.  2 - 6   , the compression mechanism can include a cam, a solenoid, a solenoid and a lever, a compression nut, and/or a tapered drive shaft, which can move from a disengaged position to an engaged position to cause the expansion member to expand from the first diameter “D1” to the second diameter “D2”. 
       FIG.  9 B  is a side section view of an example of a system  940  consistent with the disclosure. The system  940  can include an imaging device  942  and a print cartridge  944 . 
     As previously described in connection with  FIG.  9 A , a compression mechanism can cause the expansion member  906  to expand from a first diameter “D1” to the second diameter “D2”. The grip structure  934  can receive the expansion member  906  in response to the expansion member  906  expanding from the first diameter “D1” to the second diameter “D2”. 
     A friction fit can be created between the inner surface of the grip structure  934  and an outer surface of the expansion member  906  in response to the expansion member  906  expanding to the second diameter “D2”. For example, the inner surface of the grip structure  934  can include a coefficient of friction and the outer surface of the expansion member  906  can include a coefficient of friction such that when they come into contact (e.g., as a result of the expansion of the expansion member  906  to the second diameter “D2”), they do not move relative to each other when rotated. 
     As a result of the friction fit, torque can be transmitted from the expansion member  906  to the print cartridge  944  via the friction fit in response to rotation of the drive shaft  902 . For example, the imaging device  942  may include instructions to rotate the print cartridge  944  during a print job. Accordingly, as illustrated in  FIG.  9 B , the drive shaft  902  can be rotated (e.g., in a direction “into” the page as oriented in  FIG.  9 B ). As a result of the friction fit between the expansion member  906  and the grip structure  934 , torque can be transmitted from the imaging device  942  via the expansion member  906  and the grip structure  934  to the print cartridge  944  via the friction fit therebetween in response to rotation of the drive shaft  902 . 
     In some examples, the material of the expansion member  906  can be chosen such that in response to an applied torque exceeding a threshold torque, the expansion member  906  can slip relative to the inner surface of the grip structure  934  (e.g., when the coefficient of friction is overcome in response to the threshold torque being exceeded). For instance, the expansion member  906  can be a rubber elastomer such that if the imaging device  942  attempts to apply a torque to rotate the print cartridge  944  that exceeds a threshold torque, the rotation of the drive shaft  902  can cause the expansion member  906  to rotate relative to the grip structure  934 , preventing the print cartridge  944  from rotating. Such a material can be chosen for the expansion member  906  in order to avoid damaging the imaging device  942  and/or the print cartridge  944  in the event a part (e.g., in the imaging device  942 , or associated with the print cartridge  944 ) is jammed. 
       FIG.  10    is a perspective view of an example of a grip structure  1034  including a circular reception member  1046  consistent with the disclosure. As illustrated in  FIG.  10   , the grip structure  1034  can be connected to a cartridge flange  1032  and include an inner surface  1036 . 
     The grip structure  1034  can include a circular reception member  1046 . As used herein, the term “reception member” refers to a constituent component of a composite whole to receive an expansion member. For example, the circular reception member  1046  can be circularly shaped in order to receive an expansion member. When the expansion member is expanded from the first diameter to the second diameter, the expansion member can interface with the circular reception member  1046 . For example, the inner surface  1036  of the circular reception member  1046  can provide a friction fit between the inner surface  1036  and the expansion member to transmit torque from the expansion member to the print cartridge. 
       FIG.  11    is a perspective view of an example of a grip structure  1134  including a semi-circular reception member  1148  consistent with the disclosure. As illustrated in  FIG.  11   , the grip structure  1134  can be connected to a cartridge flange  1132  and include an inner surface  1136 . 
     The grip structure  1134  can include a semi-circular reception member  1148 . As used herein, the term “semi-circular” refers to a portion of a circle shape that is less than 360°. For example, the semi-circular reception member  1148  can be shaped as a semi-circle in order to receive an expansion member. When the expansion member is expanded from the first diameter to the second diameter, the expansion member can interface with the semi-circular reception member  1148 . For example, the inner surface  1136  of the semi-circular reception member  1148  can provide a friction fit between the inner surface  1136  and the expansion member to transmit torque from the expansion member to the print cartridge. 
     The semi-circular reception member  1148  can include a space  1150 . The space  1150  can be defined by end points  1152 - 1  and  1152 - 2  of the semi-circular reception member  1148 . In response to the expansion of the expansion member to the second diameter, the end points  1152 - 1  and  1152 - 2  can transmit torque from the expansion member to the apparatus. For example, as the expansion member expands to the second diameter, a portion of the expansion member can “spill out/be forced out of” of the space  1150  such that the expansion member forms an irregular shape when expanded to the second diameter. As a result, the portion of the expansion member that protrudes from the space  1150  can apply forces (e.g., radial, tangential, and/or axial forces) on the grip structure  1134  to transmit torque from the expansion member to the print cartridge. 
     In some examples, the semi-circular reception member  1148  can include a plurality of circular extruded members  1154 . The plurality of circular extruded members  1154  can be integrally formed with the semi-circular reception member  1148 . The plurality of circular extruded members  1154  can form protrusions on the inner surface  1136  of the grip structure  1134  to assist in providing a friction fit between the inner surface  1136  and the expansion member to transmit torque from the expansion member to the print cartridge. 
     Although the extruded members  1154  are illustrated in  FIG.  11    as being circular, examples of the disclosure are not so limited. For example, the extruded members  1154  can be square, rectangular, triangular, any other shape and/or combinations thereof. Further, the extruded members  1154  can include protrusions from the surface of the extruded members  1154  to further assist in providing a friction fit between the inner surface  1136  and the expansion member. 
       FIG.  12    is a perspective view of an example of a grip structure  1234  including a plurality of semi-circular reception members  1256  consistent with the disclosure. As illustrated in  FIG.  12   , the grip structure  1234  can be connected to a cartridge flange  1232  and include inner surfaces  1236 . 
     The grip structure  1234  can include a plurality of semi-circular reception members  1256 . For example, the plurality of semi-circular reception members  1256  can be shaped as semi-circles in order to receive an expansion member. When the expansion member is expanded from the first diameter to the second diameter, the expansion member can interface with the plurality of semi-circular reception members  1256 . For example, the inner surfaces  1236  of the plurality of semi-circular reception members  1256  can provide a friction fit between the inner surfaces  1236  and the expansion member to transmit torque from the expansion member to the print cartridge. 
     Similar to the semi-circular reception member  1148  previously described in connection with  FIG.  11   , the plurality of semi-circular reception members  1256  can include spaces between the semi-circular reception members  1256 . In response to the expansion of the expansion member to the second diameter, the end points defining the spaces between the plurality of semi-circular reception members  1256  can transmit torque from the expansion member to the apparatus. For example, as the expansion member expands to the second diameter, portions of the expansion member can “spill out/be forced out of” of the spaces such that the expansion member forms an irregular shape when expanded to the second diameter. As a result, the portion of the expansion member that protrudes from the spaces between the plurality of semi-circular reception members  1256  can apply forces (e.g., radial, tangential, and/or axial forces) on the grip structure  1234  to transmit torque from the expansion member to the print cartridge. 
     Although not illustrated in  FIG.  12   , the plurality of semi-circular reception members  1256  can include a plurality of extruded members. The plurality of extruded members can be circular, square, rectangular, triangular, and/or any other shape and/or combinations thereof and can be integrally formed with the plurality of semi-circular reception members  1256 . The plurality of extruded members can form protrusions on the inner surfaces  1236  of the grip structure  1234  to assist in providing a friction fit between the inner surfaces  1236  and the expansion member to transmit torque from the expansion member to the print cartridge. 
       FIG.  13    is a perspective view of an example of a grip structure  1334  including a plurality of circular extruded members  1358  consistent with the disclosure. As illustrated in  FIG.  13   , the grip structure  1334  can be connected to a cartridge flange  1332 . 
     The grip structure  1334  can include a plurality of circular extruded members  1358 . As used herein, the term “extruded member” refers to a member that protrudes from a base. For example, the plurality of circular extruded members  1358  can protrude from the cartridge flange  1332  and can be oriented around an axis of the print cartridge to receive an expansion member in response to the print cartridge being connected to an imaging device. When the expansion member is expanded from the first diameter to the second diameter, the expansion member can interface with the plurality of circular extruded members  1358 . For example, the plurality of circular extruded members  1358  can provide a friction fit between the plurality of circular extruded members  1358  and the expansion member to transmit torque from the expansion member to the print cartridge. 
     As illustrated in  FIG.  13   , the plurality of circular extruded members  1358  can include spaces between each circular extruded member. Accordingly, as the expansion member expands to the second diameter, portions of the expansion member can “spill out/be forced out of” of the spaces between the plurality of circular extruded members  1358 . As a result, the expansion member can be formed into a gear shape with the portions protruding from the spaces between the plurality of circular extruded members  1358  acting as gear teeth. As a result, the portions of the expansion member that protrude from the spaces between the plurality of circular extruded members  1358  can apply forces (e.g., radial, tangential, and/or axial forces) on the grip structure  1334  to transmit torque from the expansion member to the print cartridge. 
     In some examples, the expansion member  1306  can include a gear shaped cross section. The gear teeth  1359  of the expansion member can be complementarily shaped with the plurality of circular extruded members  1358 . For example, the gear teeth  1359  can be shaped to fit within the plurality of circular extruded members  1358 . Accordingly, as the expansion member  1306  expands to the second diameter, the gear teeth  1359  of the expansion member  1306  can mesh with the spaces between the plurality of circular extruded members  1358 . As a result, the gear teeth  1359  of the expansion member  1306  that protrude from the spaces between the plurality of circular extruded members  1358  can apply forces (e.g., radial, tangential, and/or axial forces) on the grip structure  1334  to transmit torque from the expansion member to the print cartridge. 
     Although the expansion member  1306  with a gear shaped cross section having gear teeth  1359  is shown in  FIG.  13    as interfacing with the grip structure  1334  having the plurality of circular extruded members  1358 , examples of the disclosure are not so limited. For example, the expansion member  1306  with the gear shaped cross section having gear teeth  1359  can interface with any other grip structure. For instance, the expansion member  1306  with the gear shaped cross section having gear teeth  1359  can interface with the semi-circular grip structure  884   (e.g., previously described in connection with  FIG.  8   ), the circular reception member  1046  (e.g., previously described in connection with  FIG.  10   ), the semi-circular reception member  1148  (e.g., previously described in connection with  FIG.  11   ), the plurality of circular reception members  1256  (e.g., previously described in connection with  FIG.  12   ), the plurality of triangular extruded members  1460  (e.g., described in connection with  FIG.  14   ), and/or any other shaped reception member. 
       FIG.  14    is a perspective view of an example of a grip structure  1434  including a plurality of triangular extruded members  1460  consistent with the disclosure. As illustrated in  FIG.  14   , the grip structure  1434  can be connected to a cartridge flange  1432 . 
     The grip structure  1434  can include a plurality of triangular extruded members  1460 . For example, the plurality of triangular extruded members  1460  can protrude from the cartridge flange  1432  and can be oriented around an axis of the print cartridge to receive an expansion member in response to the print cartridge being connected to an imaging device. When the expansion member is expanded from the first diameter to the second diameter, the expansion member can interface with the plurality of triangular extruded members  1460 . For example, the plurality of triangular extruded members  1460  can provide a friction fit between the plurality of triangular extruded members  1460  and the expansion member to transmit torque from the expansion member to the print cartridge. 
     As illustrated in  FIG.  14   , the plurality of triangular extruded members  1460  can include spaces between each triangular extruded member. Accordingly, as the expansion member expands to the second diameter, portions of the expansion member can “spill out/be forced out of” of the spaces between the plurality of triangular extruded members  1460 . As a result, the expansion member can be formed into a gear shape with the portions protruding from the spaces between the plurality of triangular extruded members  1460  acting as gear teeth. As a result, the portions of the expansion member that protrude from the spaces between the plurality of triangular extruded members  1460  can apply forces (e.g., radial, tangential, and/or axial forces) on the grip structure  1434  to transmit torque from the expansion member to the print cartridge. 
     In some examples, the expansion member  1406  can include a gear shaped cross section. The gear teeth  1461  of the expansion member  1406  can be complementarily shaped with the plurality of triangular extruded members  1434 . For example, the gear teeth  1461  can be shaped to fit within the plurality of triangular extruded members  1460 . Accordingly, as the expansion member  1406  expands to the second diameter, the gear teeth  1461  of the expansion member  1406  can mesh with the spaces between the plurality of triangular extruded members  1434 . As a result, the gear teeth  1461  of the expansion member  1406  that protrude from the spaces between the plurality of triangular extruded members  1434  can apply forces (e.g., radial, tangential, and/or axial forces) on the grip structure  1434  to transmit torque from the expansion member to the print cartridge. 
     Although the expansion member  1406  with a gear shaped cross section having gear teeth  1460  is shown in  FIG.  14    as interfacing with the grip structure  1434  having the plurality of triangular extruded members  1460 , examples of the disclosure are not so limited. For example, the expansion member  1406  with the gear shaped cross section having gear teeth  1460  can interface with any other grip structure. For instance, the expansion member  1406  with the gear shaped cross section having gear teeth  1460  can interface with the semi-circular grip structure  884  (e.g., previously described in connection with  FIG.  8   ), the circular reception member  1046  (e.g., previously described in connection with  FIG.  10   ), the semi-circular reception member  1148  (e.g., previously described in connection with  FIG.  11   ), the plurality of circular reception members  1256  (e.g., previously described in connection with  FIG.  12   ), the plurality of circular extruded members  1346  (e.g., previously described in connection with  FIG.  13   ), and/or any other shaped reception member. 
     Expansion members, according to the disclosure, can allow for a print cartridge to easily align with and interface with an imaging device by utilizing a member that expands to interact with a grip structure of the print cartridge. A friction fit created between the expansion member and the grip structure can allow for rotation of the print cartridge during a print job while reducing chances for jams to damage the print cartridge and/or the imaging device, as the friction fit can be specified such that the expansion member can slip relative to the grip structure if a threshold torque is exceeded. 
     In the foregoing detailed description of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration how examples of the disclosure may be practiced. These examples are described in sufficient detail to enable those of ordinary skill in the art to practice the examples of this disclosure, and it is to be understood that other examples may be utilized and that process, electrical, and/or structural changes may be made without departing from the scope of the disclosure. Further, as used herein, “a” can refer to one such thing or more than one such thing. 
     The figures herein follow a numbering convention in which the first digit corresponds to the drawing figure number and the remaining digits identify an element or component in the drawing. For example, reference numeral  102  may refer to element  102  in  FIG.  1    and an analogous element may be identified by reference numeral  202  in  FIG.  2   . Elements shown in the various figures herein can be added, exchanged, and/or eliminated to provide additional examples of the disclosure. In addition, the proportion and the relative scale of the elements provided in the figures are intended to illustrate the examples of the disclosure, and should not be taken in a limiting sense. 
     It can be understood that when an element is referred to as being “on,” “connected to”, “coupled to”, or “coupled with” another element, it can be directly on, connected, or coupled with the other element or intervening elements may be present. In contrast, when an object is “directly coupled to” or “directly coupled with” another element it is understood that are no intervening elements (adhesives, screws, other elements) etc. 
     The above specification, examples and data provide a description of the method and applications, and use of the system and method of the disclosure. Since many examples can be made without departing from the spirit and scope of the system and method of the disclosure, this specification merely sets forth some of the many possible example configurations and implementations.