# US 10,766,280 B2 · Printer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,280 B2 - Document ID: US10766280B2 - Status: Granted - Kind: B2 - Application number: 16/606,312 - Filed: 2018-09-25 - Published: 2020-04-30 - Granted: 2020-09-08 - Earliest claimed: 2017-09-26 - Assignees: Sato Holdings Kabushiki Kaisha - Applicants: Sato Holdings Kabushiki Kaisha - Inventors: Yasuhide Takeda; Hirohito Shimazaki - Web page: https://patentgrep.com/patent/US10766280B2 ## CPC - B41J 11/04: Roller platens - B41J 15/042: {for loading rolled-up continuous copy material into printers, e.g. for replacing a used-up paper roll; Point-of-sale printers with openable casings allowing access to the rolled-up continuous copy material} - B41J 2/325: by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet - B41J 11/70: cutting perpendicular to the direction of paper feed - B41J 29/02: Framework - B41J 29/13: Cases or covers - B41J 15/04: Supporting, feeding, or guiding devices; Mountings for web rolls or spindles - B41J 2202/31: Thermal printer with head or platen movable - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract A printer includes a casing, a detachable unit provided to the casing, the detachable unit being configured to be detachable from the casing, an adjacent member provided adjacent to the detachable unit, and an engagement member attached to the adjacent member, the engagement member being configured to be changeable between an engagement position with which the adjacent member is engaged with the casing and a non-engagement position with which the adjacent member is removed from the casing. The engagement member engages the detachable unit to the casing together with the adjacent member, at the engagement position. ## Claims ### Claim 1 A printer comprising: a casing; a detachable unit provided to the casing, the detachable unit being configured to be detachable from the casing; an adjacent member provided adjacent to the detachable unit; and an engagement member attached to the adjacent member, the engagement member being configured to be changeable between an engagement position with which the adjacent member is engaged with the casing and a non-engagement position with which the adjacent member is removed from the casing, wherein the engagement member engages the detachable unit to the casing together with the adjacent member, at the engagement position. ### Claim 2 (depends on 1) The printer according to claim 1, wherein the adjacent member is a platen roller configured to be detachably attached to the casing and configured to convey a print medium being nipped between the platen roller and a print head, and the engagement member is configured to be changeable between an engagement position with which the platen roller is rotatably engaged with the casing and a non-engagement position with which the platen roller is removed from the casing. ### Claim 3 (depends on 2) The printer according to claim 2, wherein the engagement member includes an attachment portion with which the platen roller is attached to the casing, and a protruding portion protruded in a direction intersecting with a shaft of the platen roller, the protruding portion being configured to engage the detachable unit while the engagement member is at the engagement position. ### Claim 4 (depends on 3) The printer according to claim 3, wherein the protruding portion includes a first protruding portion protruded from the attachment portion in a direction intersecting with the shaft, the first protruding portion having a contact surface configured to contact a contact portion formed on the detachable unit while the engagement member is at the engagement position. ### Claim 5 (depends on 3) The printer according to claim 3, wherein the protruding portion includes a second protruding portion protruded from the attachment portion in a direction intersecting with the shaft, the second protruding portion being configured to be in a groove portion formed on the detachable unit while the engagement member is at the engagement position. ### Claim 6 (depends on 3) The printer according to claim 3, wherein an insertion hole through which the shaft of the platen roller is rotatably inserted is formed on the attachment portion, the attachment portion includes a pair of convex surface portions formed at positions symmetrical about the insertion hole and a pair of flat surface portions formed between the convex surface portions and to continue to the convex surface portions, a distance between apices of the convex surface portions is larger than a distance between the flat surface portions, the printer further includes an attachment target portion having: an opening large enough to encompass a circle with a diameter configured to be same as the distance between the apices of the convex surface portions, and a notch portion configured to be in communication with the opening and configured to be formed to enable a width between the flat surface portions to pass through the notch portion, and the protruding portion protrudes from the attachment portion in a direction along the flat surface portions. ### Claim 7 (depends on 6) The printer according to claim 6, wherein the engagement member includes a third protruding portion configured to engage with the attachment target portion when the engagement member is at the engagement position. ### Claim 8 (depends on 1) The printer according to claim 1, wherein the engagement member rotates to be changeable between the engagement position and the non-engagement position. ### Claim 9 (depends on 1) The printer according to claim 1, wherein the detachable unit is a cutting unit configured to cut the print medium. ### Claim 10 (depends on 1) The printer according to claim 1, wherein the print medium includes an adhesive surface on which an adhesive layer is formed and a release sheet configured to cover the adhesive surface, and the detachable unit is a peeling mechanism configured to peel the release sheet. ### Claim 11 (depends on 1) The printer according to claim 1, wherein the detachable unit is arranged more on a downstream side than the platen roller in a conveyance direction of the print medium.