JPS63148441U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 15 show an overview of a serial printer embodied in a check writer as a printer having a paper holding mechanism, which is a prerequisite configuration of the present invention. Figure 1 is an external perspective view of the check writer; Figure 2 is a top view of the serial printer, Figure 3 is a longitudinal sectional view taken along line 3-3 in Figure 2, and Figure 4 is a top view of the serial printer.
Figure 5 is a front view of Figure 2, Figure 6 is an enlarged explanatory view of main parts such as the main shaft, main cam member, main gear, etc., Figure 7 is Figure 2. , FIG. 8 is a partially enlarged explanatory view of the set lever shown in FIG. 7, FIG. 9 is an explanatory view of the operation of FIG. 7, and FIGS. 12 is a partial diagram of the paper feeding mechanism, FIGS. 13 and 14 are respective diagrams of the parts of FIG. 7, FIG. 15 is a timing chart of each operation of the printer, and FIG. 16 is a partial diagram of the paper feeding mechanism. A schematic diagram of an embodiment of the safety device of the present invention, FIG. 17 is an explanatory diagram showing the locking operation of the safety device shown in FIG. 16, FIG. 18 is an enlarged view of the drive cam member of the safety device, and FIG. 20 is a right side view of FIG. 19; FIGS. 21 to 24 are explanatory diagrams showing a series of operations of the safety device during the printing cycle; FIG. FIG. 25 is a timing chart of the reset lever. 48: Main shaft, 50: Main cam member, 51: Cam follower, 122: Set lever, 122a: First
Step portion, 122b: second step portion, 122d: side edge portion, 136: stop pin, 140, 142: plate spring, 200: reset lever, 201: drive cam member.

Claims (1)

[Claims for Utility Model Registration] (1) A fixed frame having a type ring and forming a paper insertion path between the fixed frame and moving up and down relative to the fixed frame to be inserted into the paper insertion path. a swinging frame that performs printing on paper; and a swinging frame provided on the swinging frame, which separates from the paper to exhibit a paper release state when the swinging frame is in a raised position, and when the swinging frame is in a lowered position. a paper holding roller that exhibits a paper holding state; and a first and second paper holding roller provided on one frame between the fixed frame and the swinging frame;
a position setting member that is movable to switch to a first position; and a position setting member that is provided on the other of the fixed frame and the swinging frame and cooperates with the position setting member to move the swing frame to the raised position in the first switching position of the member. a holding member that allows the swinging of the swing frame and engages with the positioning member in a second switching position of the member to hold the swinging frame in the lowered position; In a printer having a paper holding mechanism comprising a pressing means that presses and engages with the positioning member as the swing frame moves downward, and a paper holding mechanism, the lock corresponds to the positioning member when the printer is not in use. When the swing frame is placed in the stop position and moved to the lowered position by an external force, the swing frame swings to prevent the position setting member from moving to the second switching position against the action of the pressing means. A locking member provided on either the frame or the fixed frame, and the locking member being moved from the locking position to a release position that does not correspond to the position setting member in connection with the print cycle operation when starting to use the printer. A safety device comprising a lock release drive means for moving the lock. (2) The drive release means includes a drive cam member that rotates in response to each operation of the printing cycle, and allows the locking member to return to the locked position at the end of each cycle operation. A safety device according to claim 1 of the utility model registration claim. (3) The position setting member is provided with a locking portion facing the movement locus of the locking member returning from the release position toward the locking position when the position setting member is in the second switching position; The safety device according to claim 2, which is capable of preventing the locking member from returning to the locked position by engaging with the stop portion.