An image forming apparatus includes a recording device and an apparatus body to internally house the recording device. The apparatus body includes an attachment unit to be removably mounted in the apparatus body and an apparatus body-side connector. The attachment unit includes an attachment-side connector to be electrically connected to the apparatus body-side connector. The apparatus body also includes a pressing portion to press the attachment unit in a direction in which the attachment-side connector faces the apparatus body-side connector in a state where the attachment unit is attached to the apparatus body. The direction is orthogonal to a mounting direction of the attachment unit. The apparatus body further includes a movable member holding the pressing portion movable between a first position where the pressing portion is closest to the apparatus body-side connector and a second position where the pressing portion is farthest from the apparatus body-side connector.

A tape printing device that is vertically long and can be operated by being handheld includes a main key operating portion configured with a plurality of groups of keys 215, 217, and 219 on a front surface, in which, among the plurality of groups of keys 215, 217, and 219, a group of keys 215 having a high frequency of operations is disposed at a position near a gravity center portion in a longitudinal direction, and the groups of keys 217 and 219 having a low frequency of operations are disposed at a position distant from the gravity center portion in the longitudinal direction.

A tape printing device that is vertically long and can be operated by being handheld includes a main key operating portion configured with a plurality of groups of keys 215, 217, and 219 on a front surface, in which, among the plurality of groups of keys 215, 217, and 219, a group of keys 215 having a high frequency of operations is disposed at a position near a gravity center portion in a longitudinal direction, and the groups of keys 217 and 219 having a low frequency of operations are disposed at a position distant from the gravity center portion in the longitudinal direction.

A position detection apparatus configured to detect a position on a movement surface of a mounted object having the position detection apparatus mounted thereon, includes a moved amount detector configured to detect an amount of movement on the movement surface; a posture detector configured to detect at least a posture of the mounted object on the movement surface; and a position calculator configured to calculate the position of the mounted object, based on the amount of movement and the posture.

A position detection apparatus configured to detect a position on a movement surface of a mounted object having the position detection apparatus mounted thereon, includes a moved amount detector configured to detect an amount of movement on the movement surface; a posture detector configured to detect at least a posture of the mounted object on the movement surface; and a position calculator configured to calculate the position of the mounted object, based on the amount of movement and the posture.

A tape printing device that is vertically long and can be operated by being handheld includes a main key operating portion configured with a plurality of groups of keys 215, 217, and 219 on a front surface, in which, among the plurality of groups of keys 215, 217, and 219, a group of keys 215 having a high frequency of operations is disposed at a position near a gravity center portion in a longitudinal direction, and the groups of keys 217 and 219 having a low frequency of operations are disposed at a position distant from the gravity center portion in the longitudinal direction.

An accessory device is for an electronic marking device. The accessory device has a connection device for releasably connecting to an electronic marking device, and the accessory device has a stop for limiting movement of a document transversely to a printhead of a connected electronic marking device. A deflecting mechanism deflects the document, and the stop and the deflecting mechanism are arranged on different sides of the printhead of the connected electronic marking device. An electronic marking device includes a printhead, a movement detector, and a controller. The controller is connected to the movement detector and to the printhead and is configured to actuate the printhead in order to print a document when movement of the electronic marking device over the document is detected by the movement detector. The electronic marking device has a stop for limiting movement of the document transversely to the printhead.

An accessory device is for an electronic marking device. The accessory device has a connection device for releasably connecting to an electronic marking device, and the accessory device has a stop for limiting movement of a document transversely to a printhead of a connected electronic marking device. A deflecting mechanism deflects the document, and the stop and the deflecting mechanism are arranged on different sides of the printhead of the connected electronic marking device. An electronic marking device includes a printhead, a movement detector, and a controller. The controller is connected to the movement detector and to the printhead and is configured to actuate the printhead in order to print a document when movement of the electronic marking device over the document is detected by the movement detector. The electronic marking device has a stop for limiting movement of the document transversely to the printhead.

A steel stamping tool includes a base and a cover removably mounted to the top of the base. Multiple stamps are accommodated in an accommodating space form between the base and the cover. The cover includes an extension extending from one of two ends of the cover, and at least one passage is defined vertically through the extension. The cover is removed from the base and the one stamp is picked from the accommodation space and inserted through the at least one passage. The stamp in the passage is not radially rotatable. A work end of the stamp is located in the concaved space and contacts an object. By striking a striking end of the stamp that is exposed on the top face of the extension, the work end of the stamp embosses the object.

A steel stamping tool includes a base and a cover removably mounted to the top of the base. Multiple stamps are accommodated in an accommodating space form between the base and the cover. The cover includes an extension extending from one of two ends of the cover, and at least one passage is defined vertically through the extension. The cover is removed from the base and the one stamp is picked from the accommodation space and inserted through the at least one passage. The stamp in the passage is not radially rotatable. A work end of the stamp is located in the concaved space and contacts an object. By striking a striking end of the stamp that is exposed on the top face of the extension, the work end of the stamp embosses the object.